SG188588A1 - Aqueous coating composition - Google Patents
Aqueous coating composition Download PDFInfo
- Publication number
- SG188588A1 SG188588A1 SG2013019955A SG2013019955A SG188588A1 SG 188588 A1 SG188588 A1 SG 188588A1 SG 2013019955 A SG2013019955 A SG 2013019955A SG 2013019955 A SG2013019955 A SG 2013019955A SG 188588 A1 SG188588 A1 SG 188588A1
- Authority
- SG
- Singapore
- Prior art keywords
- coating composition
- titanium dioxide
- calcium carbonate
- agueous
- pigment
- Prior art date
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- 239000008199 coating composition Substances 0.000 title claims abstract description 94
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 162
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 140
- 238000000576 coating method Methods 0.000 claims abstract description 87
- 239000011248 coating agent Substances 0.000 claims abstract description 85
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 81
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 70
- 239000000049 pigment Substances 0.000 claims abstract description 66
- 229920005989 resin Polymers 0.000 claims abstract description 36
- 239000011347 resin Substances 0.000 claims abstract description 36
- 229960003563 calcium carbonate Drugs 0.000 claims description 69
- 235000010216 calcium carbonate Nutrition 0.000 claims description 69
- 238000004040 coloring Methods 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 239000010936 titanium Substances 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 235000010215 titanium dioxide Nutrition 0.000 description 74
- 229960005196 titanium dioxide Drugs 0.000 description 74
- 239000000839 emulsion Substances 0.000 description 23
- 230000005484 gravity Effects 0.000 description 19
- 239000000203 mixture Substances 0.000 description 17
- 239000012463 white pigment Substances 0.000 description 16
- 239000006185 dispersion Substances 0.000 description 14
- 239000000178 monomer Substances 0.000 description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 11
- 239000008399 tap water Substances 0.000 description 11
- 235000020679 tap water Nutrition 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 239000007787 solid Substances 0.000 description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 8
- 238000005034 decoration Methods 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000010454 slate Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000005286 illumination Methods 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 4
- 239000011324 bead Substances 0.000 description 4
- 229960005069 calcium Drugs 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 4
- VMXUWOKSQNHOCA-UKTHLTGXSA-N ranitidine Chemical compound [O-][N+](=O)\C=C(/NC)NCCSCC1=CC=C(CN(C)C)O1 VMXUWOKSQNHOCA-UKTHLTGXSA-N 0.000 description 4
- 239000002335 surface treatment layer Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 230000009477 glass transition Effects 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 238000010422 painting Methods 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- 229920000180 alkyd Polymers 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 239000006081 fluorescent whitening agent Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002987 primer (paints) Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- NVZWEEGUWXZOKI-UHFFFAOYSA-N 1-ethenyl-2-methylbenzene Chemical compound CC1=CC=CC=C1C=C NVZWEEGUWXZOKI-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- OFNISBHGPNMTMS-UHFFFAOYSA-N 3-methylideneoxolane-2,5-dione Chemical compound C=C1CC(=O)OC1=O OFNISBHGPNMTMS-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 101100038209 Caenorhabditis elegans glo-4 gene Proteins 0.000 description 1
- 101100438971 Caenorhabditis elegans mat-1 gene Proteins 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 1
- 241000206607 Porphyra umbilicalis Species 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 229940121375 antifungal agent Drugs 0.000 description 1
- 239000003429 antifungal agent Substances 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- QFFVPLLCYGOFPU-UHFFFAOYSA-N barium chromate Chemical compound [Ba+2].[O-][Cr]([O-])(=O)=O QFFVPLLCYGOFPU-UHFFFAOYSA-N 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000011211 glass fiber reinforced concrete Substances 0.000 description 1
- ZEKANFGSDXODPD-UHFFFAOYSA-N glyphosate-isopropylammonium Chemical compound CC(C)N.OC(=O)CNCP(O)(O)=O ZEKANFGSDXODPD-UHFFFAOYSA-N 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229940097275 indigo Drugs 0.000 description 1
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- OMNKZBIFPJNNIO-UHFFFAOYSA-N n-(2-methyl-4-oxopentan-2-yl)prop-2-enamide Chemical compound CC(=O)CC(C)(C)NC(=O)C=C OMNKZBIFPJNNIO-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 210000004498 neuroglial cell Anatomy 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 125000002080 perylenyl group Chemical group C1(=CC=C2C=CC=C3C4=CC=CC5=CC=CC(C1=C23)=C45)* 0.000 description 1
- CSHWQDPOILHKBI-UHFFFAOYSA-N peryrene Natural products C1=CC(C2=CC=CC=3C2=C2C=CC=3)=C3C2=CC=CC3=C1 CSHWQDPOILHKBI-UHFFFAOYSA-N 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 238000002459 porosimetry Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/02—Emulsion paints including aerosols
- C09D5/024—Emulsion paints including aerosols characterised by the additives
- C09D5/028—Pigments; Filters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Paints Or Removers (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
There is provided an aqueous coating composition which can be formed into a coating film having a high diffuse reflectance and low gloss. An aqueous coating composition according to an embodiment of the present invention includes titanium dioxide and porous calcium carbonate as pigments and an aqueous resin.(No suitable figure)
Description
Title of Invention: AQUEOUS COATING COMPOSITION
Technical Field [ooo1} The present invention relates to an aqueous coating composition. :
[0002] With growing international consciousness about the environment, attention has been paid to the reduction of carbon dioxide emissions and energy saving technology. It is desired to secure gufficient intensity of illumination inside a building even if power consumptionnecessary for lighting is suppressed. Examples of means used for achieving such an indoor environment include enhancing the reflectance of light reflected from a wall surface, a ceiling, or the like indoors. 0003] Proposed as a coating capable cof enhancing the reflectance of a coating film formed on a wall surface, ‘a ceiling, or the like 1g, for example, a coating containing an emulsion resin at a particular ratio with respect the amount of a plaster component {Patent Document 1}. However, even though such coating has been used, no satisfactory reflectance has been provided to the resultant coating film.
[0004] In addition, examples of a technology for enhancing the reflectance of a coating film include: a technology for forming : a primer coating film in which many bubbles produced by a foaming agent are dispersed (Patent Document 2}; a technology for forming a coating film containing titanium dioxide and silica and having a bubble structure (Patent Document 3); and a technology for forming a coating film containing titanium dioxide and a whisker-shaped white pigment (Patent Document 4). However, the application of a coating filmprovidedbyvusingany of those technologiesisareflector of a refection plate in a liguid crystal display or the like, the coating film has high glose (luster), and hence the coating film involves a problem in that it is not suitable for interior decoration of a pbuilding. Further, when another extender pigment is included for reducing gloss in a coating film containing titanium dioxide, the reflectance of the coating filmreduces, andhence it is difficult to form a coating film in which a high reflectance and low gloss are simultaneously achieved.
Patent Documents
[0005] [PTL 1] JP 2003-268261 A [PTL 2] JP 2006~264120 A {PTL 3] JP 200%-120715 A [PTL 4] JP 2007-15%0782 A
Problem to be solved by the Invention
[0006] The pregent Invention has been made to solve the conventional problems and intends to provide an aqueous coating composition which can be formed into a coating film having a high diffuse reflectance and low gloss.
Means for solving the Problems
[0007] An aqueous coating composition according to an embodiment of the present invention includes titanium dioxide and porous calcium carbonate as pigments and an aguecus resin.
In a preferred embodiment of the invention, the porous calcium carbonate has a porosity of 0.5 cm’/g to 2.5 am’/g.
In a preferred embodiment of the invention, the porous calcium carbonate has a whiteness degree of 90% to 99%.
In a preferred embodiment of the invention, the titanium dioxide has a rutile-type structure.
In a preferred embodiment of the invention, the titanium dioxide hag an oil absorption amount of 25 g/100 g to 40 g/100 g.
In a preferred embodiment of the invention, a total content of the titaniumdioxide and the porous calcium carbonate is 80 velume% to 100 volume% with respect to a whole amount of the pigments.
In a preferrediembodiment of the invention, a volume ratic of the titanium dioxide and the porous calcium carbonate is titanium dioxide:calcium carbeonate=80:20 to 55:45.
Inapreferredembodiment of the invention, the aqueous coating composition further includes a coloring pigment.
In a preferred embodiment of the invention, a content ratio of the coloring pigment ig 0.5 mass% or less with respect to a content of the titanium dioxide.
Inapreferred embodiment of the invention, the aqueous coating composition has a pigment volume concentration of 40% to 70%.
Inapreferredembodiment of the invention, the agueous coating compositionig formedintocacoatingfilmhavingadiffusereflectance of 90% or more at a wavelength of 3550 nm.
Effects of the Invention iooos? The present invention can provide the agueous coating composition which can be formed into a coating film having a high diffuse reflectance and low gloss by virtue of including titanium dioxide and porousg calcium carbonate. The coating film formed from the agueous coating composition of the present invention has low gloss, thus being suitable for the interior decoration of a building.
Besides, the coating film can exhibit an excellent diffuse reflectance, and hence the formation of the ccating film on the surfaces of the interior decoration of a building can provide the same effect az enhancing the intensity of interior illumination, and the formation can provide a sufficient intensity of interior illumination even if a low power light source is used.
Degcription of Embodiments [0C09] A. Pigment
The agueous coating composition of the present invention includes titanium dioxide and porous calcium carbonate as pigments thereof. : [oo1o] The agueous coating composition of the present invention includes titanium dioxide, and hence a coating film having a high diffuse reflectance may be produced. The coating film formed from the agueous coating composition of the present invention exhibits a high diffuse reflectance, because the difference in refractive index is large between the titanium dioxide having a relatively high refractive index and the aqueous resin described below. t0011] The titaniumdioxide ispreferablyproducedbyachloride process. The use of titanium dioxide produced by a chloride process may provide an agueous coating composition which may be formed into a coating film having a higher diffuse reflectance.
[0012] The crystal structureof the titaniumdioxide preferably be a rutile-type, because the titanium dioxide of a rutile-type hag a high refractive index, and hence the use thereof can provide an agueous coating composition that may be formed into a coating film having a higher diffuse reflectance.
[0013] The titanium dioxide has an oil absorption amcunt of preferably 25 g/100 g to 40 g/100 g, more preferably 30 g/100 g to 40 g/100 g, particularly preferably 35 g/100 g to 40 g/100 g.
The titaniumdioxide having such oil absorption amount may be produced by, for example, applying surface treatment to titanium dicxide with alumina, silica, zircon, or the like, thereby forming a surface treatment layer 80 as to have a larger specific surface area. When the oil abscrption amount of the titanium dioxide is within the ranges described above, the use of the titanium dioxide may provide h an aqueous coating composition which may be formed into a coating film having a high diffuse reflectance and low gloss. 0014] More specifically, as the oll absorption amount of titanium dioxide is larger, the critical pigment volume concentration (CPVC) of an agueous coating composition including the titanium dioxide becomes lower, and a coating film in which the more alr is taken can be formed. The alr reduces the average refractive index of a vehicle. In the coating film in which the more air is taken as described above, the difference between the refractive index of the titanium dioxide and the average refractive index of the vehicle ig large, and the coating film exhibits a high diffuse reflectance. Further, the fact that the oil absorption amount of the titanium dioxide is large means that each titanium dioxide particle is thickly covered by a surface treatment laver, and hence, even if the concentration of the titanium dicxide is high in an agueous cecating composition, the approximation (aggregate) of titanium dicxide particles can be prevented, regultinginachievinganideal interparticise distance. Asaresult, a coating film having a high diffuse reflectance can be formed.
Note that, when the titanium dioxide has an oil absorption amount of less than 25 g/10C g, the particles of the titanium dioxide are covered by a thin surface treatment layer, and hence the particles are liable to aggregate, with the results that the effect of improving the diffuse reflectance of the resultant coating film may not be exerted and that the coating film may have high gloss. On the other hand, when the titanium dioxide has an oil absorption amount of more than 40 g/100 g, that is, when the particles of the titanium dioxide have a too thick surface treatment layer, the number of the particles of the titanium dioxide in a predetermined volume is smaller, possibly resulting in the reduction of the light scattering efficiency of the resultant coating £ilm. Further, a thick surface treatment layer has a weak strength and is easily broken, and hence, even if the titanium dioxide has an oil absorpticn amount of more than 40 g/10C g, the effect of the large cil absorption amount may not easily be exerted. Further, whenthe titaniumdioxide has an oil absorption amount of more than 40 g/100 g, a coating film including the titanium dioxide may have a crack defect. Note that inthis description, theoil abgorptionamount isavaluecbtained on the basis of the results of measurement by a method in accordance with JIS K-5101. Examples of such titanium dioxide include R931 (manufactured by E. I. du Pont de Nemours and Company) .
[0015] The agueous coating compesitionof the present invention may be formed into a coating f£ilm having low gless because the composition includes a particular type of calcium carbonate.
[0016] The calcium carbonate is porous. Specifically, the calcium carbonate has a porosity of preferably 0.5 em’/gto 2.5 cm’/g, more preferably 1.0 cm’/g to 2.0 cm’/g. An agueous coating composition including such porous calcium carbonate can be formed into a coating £ilm in which the air is taken. In the coating film, the average refractive index of a vehicle is small and the difference between the average refractive index of the vehicle and the refractive index of the titanium dioxide is large. Thus, the coating film exhibits a high diffuse reflectance. Further, the aqueous coating composition of the present invention may be formed into a coating film having very low gloss because the composition includes porous calcium carbonate. Thus, the agueous coating composition of the pregent invention may provide the excellent effect that a coating film having lowgloss andhavinga high diffuse reflectance is formed.
When the agueous coating composition includes calcium carbonate naving a porosity of less than 0.5 cm’/g, the resultant coating film may have a reduced diffuse reflectance and may not have sufficiently low gloss. Further, when the agueoug ccating composition includes calcium carbonate having a porosity of more than 2.5 cm?/g, the resultant coating filmmay have a crack defect and the aqueous coating composition may have insufficient storage stability. The porosity can be measured by a mercury porosimetry method with Pascal 1240 (manufactured by Thermo Finnigan, Inc.).
[0017] Calcium carbonate having a poresity in the ranges as described above has more voids and has a larger specific surface area in comparison to calcium carbonate having the smaller porosity.
In other words, the calcium carbonate is porous as described above and each pore ig fine. The calcium carbonate having such structure may take in the more air, and hence the resultant coating film including the calcium carbonate may have an improved diffuse reflectance.
[0018] The calcium carbonate has a BET specific surface area of preferably 10 m’/g or more, more preferably 15 m?/g or more, particularly preferably 20 m°/g to 50 m°/g. Examples of the calcium carbonate include Omyabrite 1300 X-0OM (manufactured by OMYA, Inc.) and PORECAL N (manufactured by Shiraishi Calcium Kaisha, Ltd.}.
[0019] The calcium carbonate has a whiteness degree of preferably 20% to 29%, more preferably 95% to 99%. Theuseof calcium carbonate having a whiteness degree in the ranges as described above : can provide an aqueous coating composition which may be formed into a coating film having a high diffuse reflectance. Note that, the whitenegs degree may be measured by a method in accordance with
Deutsche Industrie Normen (DIN) 53163 (Ry, C/2°9).
[0020] + The calcium carbonate has an average particle diameter of preferably 0.5 um to 20 um, more preferably 1 um tc 15 um, particularly preferably 2 um to 10 um, The use of the calcium carbonate having an average particle diameter in the ranges as degcribed above may provide an agueous coating compesition which may be formed into a coating £ilm having a high diffuse reflectance and low gloss. [C021] The agueous coating compositionof the present invention may contain any appropriate coloring pigment as required. Examples of the coloring pigment include: inorganic pigments such as chrome vellow, yellow iron oxide, iron oxide, carbon black, and titanium dioxide, an azo chelate type pigment; an insoluble azo type pigment; a cendensed azo type pigment; a phthalocyanine type pigment; an indigo pigment; a perynone type pigment; a perylene type pigment; adicxane type pigment; aguinacridone type pigment; an iscindolinone type pigment; and a metal complex pigment. They may be used alone . or in combination. The content ratio of the coloring pigment is preferably 0.5 mass% or less with respect to the content of the titanium dioxide. [noz2] The aqueous coating composition of the present invention may further contain an additicnal pigment ag long as the effects of thepresent inventiconarenot impaired. Examplesoftheadditional pigment include: silica; barium sulfate; alumina; a whisker white pigment; magnesium carbonate; glass beads; and organic beads such as acrylic beads.
[0023] The total content ratio of the titanium dioxide and the calciumcarbonate is preferably 80 volume$ to 100 volumes withrespect © to the whole amount of the pigments, more preferably 85 volume% to 100 volume%, particularly preferably 90 volume% to 100 volume%.
Adjusting the total content ratio of the titaniumdioxide and calcium carbonate to a volume percent in the ranges described above may provide an aguecus coating compogition which may be formed into a coating film having a high diffuse reflectance. Note that, in this description, the total content ratio of the titanium dioxide and calcium carbonate described above is calculated on the basis of the volume of each pigment calculated from the specific gravity and blended mass cf the each pigment.
[0024] The volume ratio of the titanium dioxide and the calcium carbonate (titanium dioxide:calcium carbonate) is preferably 80:20 te 55:45, nore preferably 75:25t060:40. Adjusting the volume ratio of the titanium dioxide and the calcium carbonate to a ratio in the ranges described above may provide an aqueous coating composition which be formed into a coating film excellent in the balance between a high diffuse reflectance and low gloss and in strength, and which ig excellent in storage stability. When the volume ratio of the calcium carbonate to the total volume of the titanium dioxide and calcium carbonate is legs than 20 in the aqueous coating composition, the resultant coating film may have high gloss. When the volume ratic is more than 45 in the aqueous coating composition, the agueous coating composition may have insufficient storage stability.
[0025] B. Agueous resin
Examples of the aqueous resin to be used for the agueous coating composition of the present invention include: awater-soluble resin; a water-dispersible resgin; and an emulsion resin. Of those, an emulsion resin is preferred. An emulsion resin based on any appropriate resin may be adopted as the emulsion resin. Specific examples of the emulsion resin include emulsion resins such as vinyl acetate-based; vinyl acetate-acrylic; ethylene-vinyl acetate-based; acrylic-styrene-based; acrylic; epoxy-based; alkyd-based; and acrylic-alkyd-based. - 0f those, an acrylic emulsion is preferred.
[0026] The acrylic emulsion may be obtained by, for example, subjecting an unsaturated monomer composition containing anacrylic monomer ag a main component thereof to emulsion polymerization by using an initiator in the presence of anemulsifier. Any appropriate monomer may be adopted as a preferred unsaturated monomer to be used as a raw material for producing the acrylic emulsion. Examples of the unsaturated monomer include: carboxyl group-containing monomers such as (meth)acrylic acid, maleic acid, maleic anhydride, itaconic acid, itaconic anhydride, and crotonic acid; hydroxyl group-containing monomers such as 2-hydroxyethyl (meth)acryvlate,
Z-hydroxypropyl (meth)acrylate, and 2-hydroxyvbutvl (meth) acrylate; {(meth)acrylic acid ester-based monomers such ag methyl (meth)acrylate, ethyl {(meth)acrylate, n-butyl (meth)acrylate, isobutyl {meth)acrylate, and t-butyl (meth) acrylate; divinylbenzene; diallyl phthalate; ethylene glycel di (meth) acrylate; trimethylolpropane tri{meth)acrvlate; styrene-based monomers such as styrene and o-methylstyrene; (meth}acrylamide and N-methyl (meth) acrylamide;
N,N-dimethyl (meth) acrylamide; diacetone acrylamide; and {meth)acrylonitrile.
[co27] Any appropriate emulsifier and initiator may be used as the emulsifier and initiator to be used when the unsaturated monomer is subjected toemulsionpolymerization. Astheemulsifier, there may be used, for example, an anicnic surfactant, a nonionic surfactant, a cationic surfactant, an amphoteric surfactant, or a high-molecular-weight surfactant. iooz8l The glasg transition temperature (Tg) of the emulsion resin is preferably -40°C to 00°C, more preferably -40°C to -10°C.
Use cof the emulsion resin having a glass transition temperature (Tg) in the ranges described above may provide an agueous coating composition whichmay be formed intoa coating filmwhichis excellent in coating film physical properties such as crack resistance and durability. Note that, the glass transition temperature (Tg) of the emulsion resin is calculated by Equation 1: Tg=W,/Ti+Wo/Te+ + -
W,/T,. In the esguation, W., W, +++ W. each represent the blended mass% of each monomer {= {blended amount of =sach monomer/total mass of blended monomers) x100), and T,, Tz; ++ T,, each represent the glass transition temperature of a homopolymer of each monomer.
[0029] C. RAgueous ceating composition
The aqueous coating composition of the present invention includes the pigment and the agueous resin, and may further include any suitable solvent and/or other components. The agueous coating composition of the present invention is agueous, thus having a small : envircnmental load. Accordingly, the agueous coating composition may be suitably used for the interior decoration of a building.
[0030] The aquecus emulsion resin may be preferably used as the aqueous resin, and water may be preferably used as the solvent.
[0031] The pigment volume concentration (PVC; intermgs of solid) in the agueous coating composition of the present invention is preferably 40% to 70%, more preferably 45% tc 65%, particularly preferably 30% to 60%. When the pigment volume concentration in the aqueous coating composition is less than 40%, the resultant coating £ilm may have an insufficient diffuse reflectance. On the other hand, when the pigment volume concentration in the aqueous coating composition is more than 70%, the resultant coating film may have a crack defect and the aqueous coating composition may have insufficient storage stability. Note that the pigment volume concentration refers to the volume ratio of the pigment to the total solid in the agueous coating composition. Thus, the pigment volume concentration is a value calculated, by the expression P/ (P+R) x100, using a value of the volume (P) of the whole pigment determined on the basis of the specific gravity and blended mass of each pigment and a value of the volume (R} of the resin included in the emulsion resin described below determined on the basis of the specific gravity and blended mass of the resin.
[0032] The solid content of the emulsion resin in the aqueous coating composition of the present invention is preferably 10 magst to 40 mass%, more preferably 15 mass% to 30 mass%, with respect tc the total solid in the aguecus coating composition. 10033] Any suitable solvent can be adopted as the solvent depending on the applications of the agueous coating composition.
A preferred solvent 1s water as described above.
[0034] Examples of the other components include additives generally used in coating compositions, such as a curing agent, a pigment dispersant, -a surfactant, a leveling agent, a thickener, a neutralizing agent, an antifcaming agent, a £ilm forming aid, an antiseptic, an antifungal agent, an antibacterial agent, an anti-freezing agent, a fluorescent whitening agent, and a silane coupling agent. The kinds and use amounts of such other components may properly be selected depending on the purposes of the agueous coating composition. Note that, the fluorescent whitening agent contributes to increasing the diffuse reflectance of a coating film in the visible light region from a low level to a higher level by wavelength conversion, thereby being able to increase the diffuse reflectance of the coating film across the entire visible light region. is
[0035] Any suitable method of producing an agueous coating composition may be adopted as a method of producing the agueous coating composition of the present invention. For example, it is possible to use amethod in which the pigment, agueous resin, solvent, and other components described above are kneaded, dispersed, etc. by using an 8G mill, a shesker, a disperser, or the like. 10036] It is preferred that the pigment be first prepared as a paste and then be mixed with the agueous resin and the other components, followed by “dispersion, vecause the pigment may be dispersed stably and satisfactorily.
[0037] The aqueous coating composition of the present invention may be used on any suitable object to be coated. The aqueous coating composition of the present invention may be used for, for example, painting the surfaces of interior decoraticonsuchasaceilingsurface andawall {interiorwall) surfaceinabulldingandpaintingbuilding materials (a cloth, a panel, and a board) used as a base material and decorativematerial foraceilingandwall inabuilding. Further, examples of materiale for the cbject to be coated include a cement-based or plaster-based material such as concrete, cement mortar, a plasterboard, an asbestos cement slate, an asbestos cement calcium silicate board, a CRC glass fiber reinforced concrete panel, and an asbestos cement hollowextrusionmoldingplate, awoodbuilding material suchas aplywood, a laminatedmaterial, a plywood laminate,
and a wooed fiberboard, a plastic-based material such as a vinyl chloride resin and vinyl acetate, and a metal-based material. roozgi - Any suitable method of painting an agueous coating compositionmay be adopted as amethod of painting the aqueous coating : composition of the present invention. Typically given is a method in which the agueocus coating composition ig coated on an object to be coated, followed by drying. Any suitable coating method may be adopted as a coating method of the aqueous coating composition depending on the kinds of the objects to be coated (base material), etc. Examples thereof include coating with any one of a brush, a roller, an air spray, an airless spray, a trowel, and the like.
Note that, the agueous coating composition of the present invention may be coated on an object to be coated via a primer. The coating amount of the agueous coating composition may be set to a suitable coating amount depending on the purposes of the aguecus coating composition. Any suitable dryingmethodmay be adoptedas the drying method. A preferred method is natural drying.
[0039] The aqueous coating composition of the present invention ispreferably formed intc a coating filmhaving a diffuse reflectance of 90% or more at a wavelength of 550 nm, and is more preferably formed into a coating £ilm having a diffuse reflectance of 95% or more at a wavelength of 550 nm. The formation of such coating film on the surfaces of interior decoration in a building may enhance the intensity of interior illumination or may provide a sufficient intensity of interior illumination on low electric power. [00401 The aqueous coating composition of the present invention ig preferably formed into a coating film having a speclar gross of or less at an incident angle of 85°, and ig more preferably formed intoacoating filmhaving a specular gloss of 10 or less at an incident angle of 85°. Even if such coating film, that is, a coating film having low gloss, is formed on the surfaces of interior decoration in a building, no uncomfortable feeling is given to any person.
Examples [00411 Now, the present invention is described in more detail based on examples, but the present invention is not limited to these examples.
[0042] (Example 1) {1) 270 g of titanium dioxide (R231 manufactured by E. I. du
Pont de Nemours and Company; an oil absorption amount of 36 g/100 g, a specific gravity of 3.6 g/cm’) were mixed with 20 g of a dispersed regin (BYK 190 manufactured by BYK Japan KK, golid (NV) =40.C mass%, a solid specific gravity of 1.2 g/cm’), 250 g of tap water, and 135 g of calcium carbonate (Omyabrite 1300 X-OM manufactured by OMYA,
Inc.; a whiteness degree of 95%, a porosity of 1.8 cm’/g, a specific gravityof2.7g/cm’), and themixture was then subjected to dispersing treatment in a disperser (desktop SG Mill 1500w type manufactured by Taihei System Kogyo Co., Ltd.) in which 300 g of glass beads were contained, yielding a white pigment dispersion paste.
[0043] (2) 675 gof the resultant white pigment dispersionpaste were kneaded with 320 g of an acrylic emulsion resin (Polysol 1500 manufactured by Showa Polymer Co., Ltd.; Tg=-35°C, solid (NV)=52.5 mass%, a solid specific gravity of 1.2 g/cm?) and 20 g of a thickener (RM-2020 NPR manufactured by Rohm and Haas Japan K.K.), and then g of tap water were added to the mixture, yielding an agueous coating composition.
The resultant aqueous coating composition had a PVC of 45%, and in the composition, the content of titanium dioxide was 60 volume% with regpect to the amount of the whole pigment and the content of calcium carbonate was 40 volume% (That is, the volume ratio (titanium dioxide:calcium carbonate) was £0:40.).
[0044] (Example 2)
An aqueous coating composition was prepared in the same manner as in Example 1, except that, when a white pigment dispersion paste was prepared, the blending amount of titanium dioxide was 320 g, the blending amount of calcium carbonate was 103 g, and the amount of tap water was 230 g, consequently yielding 673 g of the white pigment dispersion paste, and hence 246 g of an acrylic emulsion resin and 60 g of tap water were added to 673 g of the white pigment dispersion paste.
The resultant agueous coating composition had a PVC of 52%, and in the composition, the content of titaniumdioxide was 70 volumed with respect to the amount of the whole pigment and the content of calcium carbonate was 30 velume% (That is, the volume ratio {titanium dioxide:calcium carbonate) was 70:30.) .
[0045] (Example 3)
An aqueous coating composition was prepared in the same manner as in Example 1, except that, when a white pigment dispersion paste wag prepared, the blending amount of titanium dioxide was 320 g, the blending amount of calcium carbonate was 80 g, and the amount of tap water was 200 g, consequently vielding 620 g of the white pigment dispersion paste, and hence 165 g of an acrylic emulsion resin and 80 g of tap water were added to 620 g of the white pigment dispersion paste.
The resultant aguecus coating composition had a PVC of 60%, and inthe composition, the content of titaniumdioxide was 75 volume$ with respect to the amount of the whole pigment and the content of calcium carbonate was 25 volume$ (That is, the volume ratio {titanium dioxide:calcium carbonate) was 75:25.) .
[0046] {Example 4)
An aqueous coating composition was prepared in the same manner as in Example 1, except that, when a white pigment dispersion paste wag prepared, the blending amount of titanium dioxide was 345 g, the blending amount of calcium carbonate was 85 g, and the amount of tap water was 240 g, and further, 38g of Talc (Crown Talc PP manufactured by MATSUYA INDUSTRIES LTD., a specific gravity of 2.7 g/ cm’) were further blended at the time of preparation, consequently yielding 728 g of the white pigment dispersion paste, and hence 198 g of an acrylic emulsion resin and 85 g of tap water were added to 728 g of the white pigment dispersion paste.
The resultant aguecus coating composition had a PVC of 60%, and in the composition, the content of titanium dioxide was 67.5 volume% with respect to the amount of the whole pigment and the content of calcium carbonate wag 22.5 veolume% (That is, the volume ratio {titanium dioxide:calcium carbonate) was 75:25.).
[0047] (Example 5)
An agueous coating composition was prepared in the same manner as inExample 2, except that calciumcarbonate (PORECAL Nmanufactured by Shiraishi Calcium Kaisha, Ltd.; & whiteness degree of 95%, a porosity of 1.1 cm’/g, a specific gravity of 2.7 g/cm’) was used in place ¢f calcium carbonate (Omyabrite 1300 X-OM manufactured by OMYA, Inc.; a whiteness degree of 95%, a porosity of 1.8 cm’/g,
a specific gravity of 2.7 g/cm’).
The resultant agueous coating composition had a PVC of 52%, and in the composition, the content of titaniumdioxide was 70 volumes with respect to the amount of the whole pigment and the content of calcium carbonate wag 30 volume% {That is, the volume ratic (titanium dioxide:calcium carbonate) was 70:30.) .
[0048] (Example 6)
An agueous coating composition was prepared in the same manner as in Example 2, except that 258 g of an acrylic emulsion resin {NP 371 manufacturedby Saiden Chemical Industry Co., Ltd. ; Tg=-10°C,
NV=50 mass%, a solid specific gravity of 1.2 g/cm’) were used in place of 246 gof anacrylicemulsionresin (Polysol 1500 manufactured by Showa Polymer Co., Ltd.; Tg=-35°C, NV=52.5%, a solid specific gravity of 1.2 g/cm’), and that when the aqueous coating composition was prepared, the amount of tap water was 48 g.
The resultant agueous coating composition had a PVC of 52%, and in the composition, the content of titanium dioxide was 70 volume% with respect to the amount of the whole pigment and the content of calcium carbonate was 30 volume% (That is, the volume ratio (titanium dioxide:calcium carbonate) was 70:30.) .
[0049] (Example 7)
An aqueous coating composition was prepared in the same manner as in Example 2, except that 0.16 ¢ of a coloring pigment paste (product name "COLOR MAX W ECO CYANINE GREEN" manufactured by Nippon
Paint Co., Ltd., coloring pigment concentration in paste: 20 mass%, specific gravity of coloring pigment: 2.0 g/cm’) was further added.
The resultant agueous coating composition had a PVC of 52%, and inthe composition, the content of titaniumdioxide was 70 volumes with respect to the amount of the whole pigment and the content of calcium carbonate was 30 volume% (That is, the volume ratio {titanium dioxide:¢alcium carbonate) was 70:30.) .
[0050] (Example 8)
An agueous coating composition was prepared in the same manner as in Example 2, except that 3.0gof accloringpigment paste (product name "COLOR MAX W ECO PERMANENT YELLOW" manufactured by Nippon Paint
Co., Ltd., coloring pigment concentration in paste: 25 mass$, specific gravity of coloring pigment: 1.6 g/cm’) was further added.
The resultant aqueous coating composition had a PVC of 52%, and in the composition, the content of titanium dioxide was 70 volume¥ with respect to the amount of the whole pigment and the content of calcium carbonate was 30 volume% (That is, the volume ratio (titanium dioxide:calcium carbonate) was 70:30.) .
[0051] (Example 92)
An agueous coating composition was prepared in the same manner as in Example 2, except that 4.0gof acoloring pigment paste (product name "COLOR MAX W ECO OCHER" manufactured by Nippon Paint Co. , Ltd. , coloring pigment concentration in paste: 40 mass%, specific gravity of coloring pigment: 4.0 g/cm’) was further added.
The resultant aqueous coating composition had a PVC of 52%, and in the compogition, the content of titanium dioxide was 70 velume% with respect to the amount of the whole pigment and the content of calcium carbonate was 30 volume (That is, the volume ratio {titanium dioxide:calcium carbonate) was 70:30.).
[0052] (Comparative Example 1)
An agueous coating composition was prepared in the same manner as in Example 1, except that 103 g of calcium carbonate (N Jutan manufactured by Maruo Calcium Co., Ltd.; a whiteness degree of 93%, a porosity of 0.1 cm’/g, a specific gravity of 2.7 g/om®) were used in place of 135 g of calcium carbonate (Omyabrite 1300 X-OM manufactured by OMYA, Inc.; a whiteness degree of 95%, a porosity of 1.8 cm’/g, a specific gravity of 2.7 g/cm’), and that when a white pigment dispersion paste was prepared, the blending amount of titanium dioxide was 320 g and the amount of tap water was 200 g (yielding 643 ¢ of the white pigment dispersion paste), and hence 246 g of an acrylic emulsion resin and 90 g of tap water were added to the white pigment dispersion paste.
The resultant agueous coating composition had a PVC of 52%, and in the composition, the content of titaniumdioxide was 70 volune% : with respect to the amount of the whole pigment and the content © of calcium carbonate was 30 volume% (That is, the volume ratic (titanium dioxide:calcium carbonate) was 70:30.) .
[0053] (Evaluations of coating film)
An agueoug transparent sealer (emulsion coating manufactured by Nippon Paint Co., Ltd.) was coated once on a slate board of 100 mm by 150 mm with a wool roller at a coating amount of 45 g/m*, and rhe slate board was dried while being left to stand still at rcom temperature for one day, thereby yielding a sealer-coated slate board. The aqueous coating composition yielded in each cof the examples and comparative example described above was coated twice on the resultant slate board with a wool roller at a coating amount of 120 g/m?, and the coated slate board was dried while being left to stand still at room temperature for one day, thereby forming a coating £ilm. Each resultant ccating film was used to perform the following evaluations. Table 1 shows the results of the evaluations. Note that, the volume ratio of titanium dioxide and calcium carbonate in Table 1 was calculated on the basis of the volume of each of titanium dioxide and calcium carbonate calculated from the specific gravity and blending amount of each of the titanium dioxide and calcium carbonate. Further, the PVC in Table 1 was calculated by the equation PVC=P/ (P+R)x100, using a value of the volume {(P) of thewholepigment calculatedonthebasis of the specific gravity and blended mass of each pigment and a value of the volume {R) of each resin calculated on the basis of the specific gravity and blended mass of the each resin. (1 Diffuse reflectance
A gpectrophotometer (CM-36004d manufactured by Konica Minelta
Holdings, Inc.) was used to measure the diffuse reflectance at.550 nm based on the diffuse reflectance of barium sulfate gerving as the standard one. (2) Gloss
A glossmeter (Multi Gloss 268 manufactured by Konica Minolta
Holdings, Inc.) was used to measure the specular gloss at an incident angie of 85°. (3) State of costing film
The outer appearance of each coating filmwas visually observed and was evaluated on the basis of the criteria described below.
A coating film having no ccating film defect --- A
A coating film having coating film defects such as small crack co. B 4 coating film having large crack --- C
[0034] {Bvaluation of storage stability of aqueous coating composition)
Further, the aguecus coating composition yielded in each of
Ixamples and Comparative Example described above was stored in a 50°C constant temperature room for 30 days, and was then returned to a room with room temperature. A Stormer viscometer was used to measure the viscosity of the agueous coating composition before the storage and that after the storage, and the storage stability of the agueous coating composition was then evaluated. Table l shows the results.
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[00s6] Az apparent fromthe results shown in Table 1, the aqueous coating composition of the present invention may be formed into the coating film having a high diffuse reflectance and low gloss. rurther, the increase in viscosity after each storage test was 10
KU cor less, which was a good result. : [0C57] When such coating film wag used for the interior decoration in a building, the sufficient intensity of interior illuminationwas attainedwith lowelectric power because the coating film had a high diffuse reflectance, and the comfortable interior environment was able to be achieved because the coating film had low gloss.
[0058] The aguecus coating composition of the present invention may be suitably used for, for example, coating of interior decoration in a building. a1
Claims (1)
- Claims[Claim 1] An aqueous coating compesition, comprising titanium "dioxide and porous calcium carbonate as pigments, and an aqueous resin. fClaim2] Anagueous coating compositionaccordingtoclaiml, wherein the porous calcium carbonate has a porosity of 0.5 em’/g to 2.5 cm’ /g.[Claim 3] An aguecus coating composition according to claim 1 or 2, wherein the porous calcium carbonate has a whiteness degree of 90% to 99%. .[Claim 4] An agueous coating composition according to any one of claims 1 to 3, wherein the titanium dioxide has a rutile-type structure.[Claim 5] An aqueous coating composition according to any one of claims 1 to 4, wherein the titanium dioxide has an oil absorption amount of 25 g/100 g to 40 g/100 g. [Claim 61 An agueous coating composition according to any one of claims 1 to 5, wherein a total content of the titanium dioxide and the porous calciumcarbonate is 80 volume% to 100 volume% with respect to a whole amount of the pigments.[Claim 7] An agueocus coating composition according to any one of claims 1 to 6, wherein a volume ratio of the titanium dioxide and the porous calcium carbonate is titanium dioxide:calcium carbonate=80:20 to 55:45. :[Claim 8] An agueous coating composition according to any one of c¢laimg 1 to 7, further comprising a coloring pigment. {Claim 9] An agueous coating composition according to claims 8, wherein a content ratio of the coloring pigment is 0.5 mass% or less with respect to a content of the titanium dioxide. [Claim 10) An agueous coating composition according to any one of claims 1 to 2, wherein the aqueous coating composition has a pigment volume concentration of 40% to 70%.[Claim 11] An agueous coating composition according to any one of claims 1 to 10, wherein the agueous coating composition is formed into a cecating film having a diffuse reflectance of 20% or more at a wavelength of 550 nm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010218741 | 2010-09-29 | ||
| JP2011084636A JP5470314B2 (en) | 2010-09-29 | 2011-04-06 | Water-based paint composition |
| PCT/JP2011/071308 WO2012043292A1 (en) | 2010-09-29 | 2011-09-20 | Aqueous coating composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SG188588A1 true SG188588A1 (en) | 2013-04-30 |
Family
ID=45892756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SG2013019955A SG188588A1 (en) | 2010-09-29 | 2011-09-20 | Aqueous coating composition |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP5470314B2 (en) |
| CN (1) | CN103140556B (en) |
| MY (1) | MY166144A (en) |
| SG (1) | SG188588A1 (en) |
| WO (1) | WO2012043292A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11339298B2 (en) | 2016-10-24 | 2022-05-24 | Ishihara Sangyo Kaisha Ltd | Composite pigment and production method thereof, paint composition containing composite pigment, and coating film |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6207071B2 (en) * | 2013-11-19 | 2017-10-04 | 関西ペイント株式会社 | Matte thermal barrier coating composition and coating film forming method using the composition |
| JP6393532B2 (en) * | 2014-06-26 | 2018-09-19 | 積水樹脂プラメタル株式会社 | Laminated board |
| JP6351035B2 (en) * | 2014-08-12 | 2018-07-04 | 関西ペイント株式会社 | Contamination-resistant matte water-based coating composition and stain-resistant matte coating film forming method |
| JP6587397B2 (en) * | 2015-03-10 | 2019-10-09 | 日本バイリーン株式会社 | Printed fiber sheets and automotive interior materials |
| WO2017012033A1 (en) * | 2015-07-21 | 2017-01-26 | Rohm And Haas Company | An aqueous coating composition |
| CN106675260A (en) * | 2016-12-16 | 2017-05-17 | 廖凌峰 | Waterborne coating for wood and preparation method thereof |
| JP2021046513A (en) * | 2019-09-20 | 2021-03-25 | 菊水化学工業株式会社 | Coating composition |
| JP7456840B2 (en) * | 2020-04-20 | 2024-03-27 | 日本ペイント株式会社 | Multi-layer coating film, method for forming multi-layer coating film, and paint set for forming multi-layer coating film |
| JP6826742B1 (en) * | 2020-06-08 | 2021-02-10 | 株式会社 小林工業所 | Interior plaster wall material |
| CN115160880A (en) * | 2022-08-01 | 2022-10-11 | 广州景颐光电科技有限公司 | Diffuse reflection plate spraying material, diffuse reflection plate containing spraying material and preparation method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61115971A (en) * | 1984-11-10 | 1986-06-03 | Maruo Calcium Kk | Water paint |
| JP2746708B2 (en) * | 1989-12-19 | 1998-05-06 | 恒和化学工業株式会社 | Composition for paint with excellent concealing properties |
| JP2921019B2 (en) * | 1990-04-28 | 1999-07-19 | ぺんてる株式会社 | Liquid composition |
| JPH05209143A (en) * | 1992-01-29 | 1993-08-20 | Pentel Kk | Masking composition |
| JP3668544B2 (en) * | 1995-12-20 | 2005-07-06 | 日鉄鉱業株式会社 | Surface-modified heavy calcium carbonate, method for producing the same, and water-based coating composition |
| JP3354428B2 (en) * | 1997-03-19 | 2002-12-09 | エスケー化研株式会社 | Aqueous paint composition |
| JP2002201419A (en) * | 2000-12-28 | 2002-07-19 | Kansai Paint Co Ltd | Coating composition |
| JP2006096807A (en) * | 2004-09-28 | 2006-04-13 | Sunstar Engineering Inc | Curable composition |
| JP2007177240A (en) * | 2005-12-02 | 2007-07-12 | Shiraishi Calcium Kaisha Ltd | Shading coating material, base material film, coating material for greenhouse for farming, and greenhouse for farming |
| JP2010150178A (en) * | 2008-12-25 | 2010-07-08 | Maruzen Pharmaceut Co Ltd | Functional powder with adsorbed essential oil constituent |
-
2011
- 2011-04-06 JP JP2011084636A patent/JP5470314B2/en not_active Expired - Fee Related
- 2011-09-20 MY MYPI2013000908A patent/MY166144A/en unknown
- 2011-09-20 CN CN201180047028.5A patent/CN103140556B/en not_active Expired - Fee Related
- 2011-09-20 WO PCT/JP2011/071308 patent/WO2012043292A1/en active Application Filing
- 2011-09-20 SG SG2013019955A patent/SG188588A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11339298B2 (en) | 2016-10-24 | 2022-05-24 | Ishihara Sangyo Kaisha Ltd | Composite pigment and production method thereof, paint composition containing composite pigment, and coating film |
| US11512205B2 (en) | 2016-10-24 | 2022-11-29 | Ishihara Sangyo Kaisha, Ltd. | Composite pigment and production method thereof, paint composition containing composite pigment, and coating film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103140556B (en) | 2016-06-08 |
| MY166144A (en) | 2018-06-06 |
| WO2012043292A1 (en) | 2012-04-05 |
| CN103140556A (en) | 2013-06-05 |
| JP5470314B2 (en) | 2014-04-16 |
| JP2012092289A (en) | 2012-05-17 |
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