JPH0116872B2 - - Google Patents
Info
- Publication number
- JPH0116872B2 JPH0116872B2 JP31523686A JP31523686A JPH0116872B2 JP H0116872 B2 JPH0116872 B2 JP H0116872B2 JP 31523686 A JP31523686 A JP 31523686A JP 31523686 A JP31523686 A JP 31523686A JP H0116872 B2 JPH0116872 B2 JP H0116872B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- cement
- resin
- emulsion resin
- coating composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 229920005989 resin Polymers 0.000 claims description 32
- 239000011347 resin Substances 0.000 claims description 32
- 239000004568 cement Substances 0.000 claims description 29
- 239000000839 emulsion Substances 0.000 claims description 25
- 239000008199 coating composition Substances 0.000 claims description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 11
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 9
- 229920001577 copolymer Polymers 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000004593 Epoxy Substances 0.000 claims description 7
- 239000000049 pigment Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 5
- 125000001931 aliphatic group Chemical group 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000004040 coloring Methods 0.000 claims description 4
- 229930185605 Bisphenol Natural products 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 229920006122 polyamide resin Polymers 0.000 claims description 3
- 238000000576 coating method Methods 0.000 description 33
- 239000010408 film Substances 0.000 description 32
- 239000011248 coating agent Substances 0.000 description 28
- 239000003973 paint Substances 0.000 description 12
- 238000005336 cracking Methods 0.000 description 10
- 230000005856 abnormality Effects 0.000 description 9
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 6
- 238000007665 sagging Methods 0.000 description 6
- 238000010998 test method Methods 0.000 description 6
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 5
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 5
- 239000003513 alkali Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000006253 efflorescence Methods 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 5
- 238000010422 painting Methods 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 206010037844 rash Diseases 0.000 description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 125000005907 alkyl ester group Chemical group 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- -1 2-ethylhexyl Chemical group 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000004566 building material Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000010454 slate Substances 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000004606 Fillers/Extenders Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910000323 aluminium silicate Inorganic materials 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 150000004985 diamines Chemical class 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 2
- QGKMIGUHVLGJBR-UHFFFAOYSA-M (4z)-1-(3-methylbutyl)-4-[[1-(3-methylbutyl)quinolin-1-ium-4-yl]methylidene]quinoline;iodide Chemical compound [I-].C12=CC=CC=C2N(CCC(C)C)C=CC1=CC1=CC=[N+](CCC(C)C)C2=CC=CC=C12 QGKMIGUHVLGJBR-UHFFFAOYSA-M 0.000 description 1
- 125000004209 (C1-C8) alkyl group Chemical group 0.000 description 1
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 description 1
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical group CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 1
- HIBWGGKDGCBPTA-UHFFFAOYSA-N C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 Chemical compound C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 HIBWGGKDGCBPTA-UHFFFAOYSA-N 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 150000001253 acrylic acids Chemical class 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000003429 antifungal agent Substances 0.000 description 1
- 229940121375 antifungal agent Drugs 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 239000011400 blast furnace cement Substances 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
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical class [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- GYZLOYUZLJXAJU-UHFFFAOYSA-N diglycidyl ether Chemical compound C1OC1COCC1CO1 GYZLOYUZLJXAJU-UHFFFAOYSA-N 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 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
- 238000005562 fading Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 229910003471 inorganic composite material Inorganic materials 0.000 description 1
- 239000001023 inorganic pigment Substances 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
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000004570 mortar (masonry) Substances 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
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000008262 pumice Substances 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 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
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Description
＜産業上の利用分野＞
本発明は凹凸表面を有するセメント基板用のタ
レ、ワレ等の生じにくい水性被覆組成物に関する
ものである。
＜従来技術及び問題点＞
モルタル、コンクリート、スレート等のセメン
ト製品基板を使用した建材が外装材、ブロツク塀
等に多く利用されている。
建築物の寿命が延びるに従い、これら建材には
耐久性の高い仕上げが要求されてきており、さら
に建材の量産化に伴い塗装仕上げのスピード化が
要求されてきているが、従来このような要求を満
す被覆組成物はいまだ開発されていない。すなわ
ち従来、例えば未養生セメント製品への塗装は１
〜２週間放置後、セメント製品の表面のPH及び含
水率を調整し、その後被覆組成物を塗装しないと
ハクリ、変色等の塗膜欠陥が生じたりする欠点が
あつた。また、従来の被覆組成物、例えばアクリ
ルエマルジヨン樹脂とセメントとを主成分とする
被覆組成物を塗布し、さらに耐候性の優れた溶剤
型塗料を上塗塗装すると、下塗塗膜に耐溶剤性が
ないため、光沢が低下したり塗膜にシワが生じた
りする欠点があつた。また最近では、セメント製
品基板にフアツシヨン性をもたせるため基板表面
に波形状あるいはランダムな凹凸模様を形成させ
たものが広く採用されるようになつてきた。
このような凹凸表面を有するセメント基板に塗
料を厚膜塗装すると塗料がタレを生じ、凹部に塗
料がたまり、必要以上の厚膜となり、逆に凸部が
薄膜となり、均一塗膜の形成が困難であり、さら
に塗膜にワレが生じる等の欠点があつた。
本発明は上記の如き従来技術に鑑み、上記欠点
のない優れた性能の被覆組成物を提供することを
目的とするものである。
＜問題点を解決するための手段＞
このような目的は、
(a) (i) アクリル酸又はメタクリル酸アルキルエ
ステルの共重合エマルジヨン樹脂（アルキル
基は炭素数１〜８を有する）固形分
……２〜15重量％
(ii) ビスフエノール型エポキシエマルジヨン樹
脂固形分 ……１〜５重量％
(iii) 平均粒径30〜300μの中空状無機物物粉末
……10〜40重量％
(iv) セメント ……20〜60重量％
(v) 着色顔料 ……１〜５重量％
(vi) 前記エポキシエマルジヨン樹脂の0.8〜1.2
当量のポリアミド樹脂又は脂肪族多価アミン
硬化剤、及びさらに必要に応じ各種添加剤少
量からなり、かつ〔(i)＋(ii)〕／(iv)の重量比が
（0.15〜0.28）の範囲である混合物100重量部
ならびに
(b) 水 15〜70重量部
からなる粘度50〜500ポイズの水性被覆組成物に
より達成される。
本発明の被覆組成物は、凹凸表面を有する硬化
セメント基板はもちろん未養生のセメント基板に
もただちに塗装出来るため施工期間が短縮出来、
また常温もしくは強制乾燥でタレ、ワレ等を生ず
ることなく厚膜塗膜が可能であるため、現地塗装
だけでなく工場ライン塗装も可能であり、さらに
有機と無機の特定複合材を特定割合で配合してい
るので長期耐久性、密着性、耐アルカリ性の優れ
た塗膜が得られ、また上塗塗料として水系あるい
は溶剤型塗料を塗り重ねても、前述の如き塗膜欠
陥のない塗膜を得ることが可能である。
本発明において用いられるアクリル酸又はメタ
クリル酸アルキルエステルの共重合エマルジヨン
樹脂を構成する成分であるアクリル酸の炭素数１
〜８のアルキルエステルモノマー、メタクリル酸
の炭素数１〜８のアルキルエステルモノマーのア
ルキル基としてはメチル、エチル、ｎ―ブチル、
イソブチル、ターシヤリーブチル、２―エチルヘ
キシル、ベンジル、プロピル、イソプロピル、
sec―ブチル等が代表的なものとして用いられる。
炭素数９以上のアルキル基は乳化重合時にゲル物
が発生したり、エマルジヨン粒子の疎水性が高く
なり、セメント混和用エマルジヨン樹脂の合成に
は不適である。又、これらのアクリル酸（又はメ
タクリル酸）アルキルエステルにスチレンを30重
量％まで含めた共重合エマルジヨン樹脂も用いら
れる。ただし、スチレンを30重量％以上用いる
と、出来たエマルジヨン塗膜の耐候性が著しく低
下するため耐久性の必要な屋外用エマルジヨン樹
脂としては好ましくない。
特に好ましいアクリル酸又はメタクリル酸アル
キルエステルとしてはメタクリル酸メチル、アク
リル酸エチル、アクリル酸ブチル、アクリル酸２
―エチルヘキシルであり、またスチレンを使用す
る場合は20重量％以下が特に好ましい。また、必
要ならばアクリル酸、メタクリル酸、メタクリル
酸２―ヒドロキシエチル等の官能基モノマーを数
重量％共重合することも可能である。本発明に用
いられるアクリル酸（又はメタクリル酸）アルキ
ルエステルの共重合エマルジヨン樹脂はセメント
と混和されるため、耐アルカリ性を有し、セメン
ト混和安定性に優れているものがよく、そのため
には乳化重合時の乳化剤としてノニオン界面活性
剤が好適である。これらアクリルエマルジヨン樹
脂の分子量は５万〜30万、好ましくは10万〜20万
であるのが有利である。また最低造膜温度は５℃
以下が好ましい。それ以上になると成膜時にワレ
が生じやすくなるからである。またアクリルエマ
ルジヨン樹脂は固形分40重量％の時の粘度が
100cps以下が好ましい。それ以上になると水の量
を多くし粘度を下げる必要があり、そのため固形
分が低下し塗膜乾燥時のヤセによりワレが生じや
すくなる。
これらの樹脂は上記混合物(a)中において固形分
２〜15重量％の割合で配合される。樹脂が２重量
％未満であると塗膜の初期硬度、耐候性が低下
し、エフロレツセンスが生じ易くなる。一方樹脂
が15重量％を越えると厚膜塗装（約0.5〜10mm）
が出来ず、ワレが生じ易くなる。
本発明において用いられるビスフエノール型エ
ポキシエマルジヨン樹脂としては、ビスフエノー
ルＡとエピクロルヒドリンから得られる芳香族ジ
グリシジルエーテル類で平均分子量350〜1000の
樹脂を乳化剤に用いて、水分散型にしたものであ
り、樹脂固型分として、上記混合物(a)中に１〜５
重量％が用いられる。樹脂が１重量％未満である
と、素地との密着性が低下し、５重量％を越える
と、形成された塗膜の耐候性が著しく低下する。
本発明において用いられる中空状無機物粉末
は、内部が完全に中空でその中空部が殻で完全に
閉ざされている粉末、あるいは軽石の如く内部に
融壁のある独立もしくは連続気泡状の粉末であ
り、その平均粒径は、30〜300μ程度のものが適
当である。なお平均粒径が30μ以下であるとワレ
が生じやすく、また塗膜強度が低下し30μを越え
るとタレやすく、また塗膜の平滑性を欠き、美観
が低下する。
中空状無機物粉末としては、ガラスバルーン、
シラスバルーン、アルミノシリケートバルーン、
シリカバルーン、アルミナバルーン、ジルコニア
バルーン、カーボンバルーン等が代表的なものと
して例示出来る。特に塗膜強度の点から50％破壊
静水圧が10Kg／cm2以上のものが望ましく、具体例
として、ガラスバルーン、アルミノシリケートバ
ルーン、アルミナバルーン、ジルコニアバルーン
が挙げられる。この中空状無機物粉末は厚膜塗膜
においてもタレ、ワレのない塗膜を得、またもろ
さの改良、増量のため配合されるものであり、さ
らに被覆組成物の比重を小さくし、塗装作業性を
よくする効果をも有する。なお、通常の体質顔
料、骨材等の充填剤のみでは凹凸表面を有するセ
メント基板に厚膜塗装した場合、タレ、ワレが防
止出来ない。中空状無機物粉末は、上記混合物(a)
中において10〜40の割合で配合され、この範囲に
おいて前記効果が得られる。
本発明において用いられるセメントとしてはポ
ルトランドセメント、高炉セメント、シリカセメ
ント、アルミナセメント等が例示できるが、その
種類は特に制限はない。セメントは本発明におい
ては上記の混合物(a)中において20〜60重量％の割
合で配合される。セメントが20重量％未満だと厚
膜時ワレが生じやすくなり、また密着性が低下す
る。一方、60重量％を越えると塗膜がもろくな
り、またエフロレツセンスが生じやすくなる。
本発明において用いられる着色顔料としては一
般の無機質顔料が代表的であるが、色によつて
は、耐アルカリ性及び耐候性を有する有機顔料で
もよい。たとえば黒く着色する場合には、カーボ
ンブラツク、酸化鉄等、赤の場合には弁柄等、緑
の場合には酸化クロム等、青の場合にはシアニン
ブルー等、白の場合には二酸化チタン等が例示で
きる。着色顔料は上記の混合物(a)中において１〜
５重量％の割合で配合され、この範囲内での配合
により充分に着色する事が出来る。
本発明に用いられるエポキシ樹脂用硬化剤とし
ては、ジアミン又はジアミン誘導体等と二塩基酸
又は二塩基酸誘導体等の重縮合によつて得られる
ポリアミド樹脂あるいはエチレンジアミン、ジエ
チレントリアミン、トリエチレンテトラミン等の
脂肪族多価アミンあるいはフエノール樹脂、エポ
キシ樹脂等で変性した脂肪族多価アミンが適当で
ある。硬化剤の使用量はエポキシ樹脂のエポキシ
基の0.8〜1.2当量になる様に使用する必要があ
る。0.8当量未満及び1.2当量を越えると本来のエ
ポキシ樹脂の特性、例えば密着性、可撓性が著し
く低下しその他耐久性等の性能も低下するので好
ましくない。
本発明において用いられる添加剤としては、た
とえば顔料分散性、塗装作業性及び保存性等を良
好なものとするための分散剤、消泡剤、増粘剤、
防腐剤、防カビ剤、また塗膜の成膜性をよくする
ための成膜助剤等が例示できる。
なお、本発明において塗膜のもろさの改良、増
量のため炭酸カルシウム、硫酸バリウム、タル
ク、クレー等の体質顔料；硅砂等の粒径300μ以
下の骨材などの充填剤を上記の混合物(a)中に40重
量％以下の範囲にて配合することも可能である。
上記混合物(a)中(i)アクリル酸（又はメタクリル
酸）アルキルエステルの共重合エマルジヨン樹脂
の固形分と(ii)エポキシエマルジヨン樹脂の固形分
との和と、(iv)セメントとの重量比は〔(i)＋(ii)〕／
(iv)＝0.15〜0.28である。この比率が0.15より小さ
い場合には、塗膜の初期硬度が出ずエフロレツセ
ンスが発生し、塗膜性能の良い状態での厚膜を形
成することが出来ず、一方この比率が0.28より大
きい場合には厚膜時、ワレが生じやすくなる。
前記〔(ii)＋(vi)〕／〔(i)＋(ii)＋(iv)〕の重量比
は特
に0.2〜0.45が好ましく、この比率が0.2より小さ
場合は密着性が低下し、一方この比率が0.45より
大きい場合には耐候性が低下する。
本発明の水性被覆組成物は、上記混合物(a)100
重量部に対して水15〜70重量部を配合し組成物粘
度50〜500ポイズにしたものである。この範囲内
であればセメントの硬化性及び塗装作業性が良好
であるからである。なお、水の量が15重量部未満
だとセメント混和時にアクリルエマルジヨンが凝
集しやすくなり、一方、70重量部を越えると固形
分が低下し乾燥時にヤセを生じワレが生じやすく
なる。
なお本発明者等はエマルジヨン樹脂として酢酸
ビニル樹脂、酢酸ビニル―アクリル樹脂、エチレ
ン―酢酸ビニル樹脂等の酢酸ビニル系エマルジヨ
ン樹脂あるいはスチレン―ブタジエン系エマルジ
ヨン樹脂等、塗料業界において代表的に使用され
ているエマルジヨン樹脂についても検討したが、
例えば前者においては耐候性、耐アルカリ性が劣
り、さらに長期耐久性に欠け、また後者において
は耐候性等が劣り、本発明においては適当でない
ことが判明した。
以上の如き本発明の水性被覆組成物は通常の塗
装方法たとえば吹付塗装、ローラー塗装、流し塗
等によりセメント基材表面等に塗布される。本発
明の水性被覆組成物は0.5〜10mm程度の厚膜でも
良好な被覆を施すことが出来、常温あるいは100
℃以下の温度で強制乾燥させる。また、得られた
塗膜に更に上塗塗料を良好に塗布することができ
る。この上塗塗料として使用されるものは、例え
ばアクリル酸エステル系共重合樹脂、スチレン―
アクリル酸エステル共重合体等のスチレン系、酢
酸ビニル―アクリル酸エステル共重合体等の酢酸
ビニル系及び塩化ビニル―アクリル酸エステル共
重合体等の塩化ビニル系の溶液重合より得られる
もの及びアクリル酸エステル系のアクリルウレタ
ン、スチレン―アクリル酸エステル系のアクリル
ウレタン樹脂、フルオロオレフインとビニルエー
テルを必須成分とし、かつ架橋部位を有する含フ
ツ素共重合樹脂をベースとする溶剤型塗料、アク
リル酸エステル系、スチレン―アクリル酸エステ
ル共重合体等のスチレン系、酢酸ビニル―アクリ
ル酸エステル共重合体等の酢酸ビニル系等のエマ
ルジヨン樹脂をベースとする水系塗料、不飽和ポ
リエステル、ポリエステル（メタ）アクリレー
ト、ウレタン（メタ）アクリレート、エポキシ
（メタ）アクリレート、アクリル（メタ）アクリ
レート樹脂タイプの紫外線硬化型塗料が例示でき
る。
＜発明の効果＞
本発明の被覆組成物は、凹凸表面を有するセメ
ント基板に塗装してもタレがなく、均一膜厚の塗
膜が得られ、かつワレ等を生ずることなく厚膜塗
装が可能である。
さらに未養生のセメント基材にも塗装出来るた
め施工期間が短縮出来、また長期耐久性、密着
生、耐アルカリ性に優れ、上塗り特性も優れてい
る。
以下実施例により本発明を更に詳しく説明す
る。なお、実施例、比較例中の組成物の配合割合
は重量部で示す。
実施例１〜３及び比較例１〜５
第１表に示す配合の水性被覆組成物を平均高低
差約７mmの表面が波形の凹凸石綿スレート板表面
に乾燥膜厚約2.0mmになるように吹付塗布し、常
温で７日間放置することにより塗膜を硬化せしめ
た。
得られた着色石綿スレート板の密着性、エフロ
レツセンス促進試験、凍結融解サイクル試験、促
進耐候性試験、塗膜外観の各試験結果を第１表の
下段に示した。なお試験方法及び評価は下記の通
り行なつた。
(1) 密着性
試験方法：塗膜の２mmゴバン目セロフアンテー
プハクリ試験
評 価 ：◎…50/50、〇…49/50〜26/50、×…
２５／５０以下
(2) エフロレツセンス促進試験
試験方法：飽和消石灰雰囲気にて
〔５℃×16時間→20℃×８時間〕20サイク
ル
評 価 ：◎…全く異常なし、〇…極く一部異
常あり、×…全面異常あり
(3) 凍結融解サイクル試験
試験方法：〔−20℃×16時間凍結→室温×８時
間〕35サイクル
評 価 ：◎…全く異常なし、〇…極く一部異
常あり、×…全面異常あり（ワレ有）
(4) 促進耐候性試験
試験方法：サンシヤインカーボン2000時間照射
評 価 ：◎…全く異常なし、○…極く一部異
常あり、×…全面異常あり（チヨーキング
有）
(5) 塗膜外観
試験方法：目視判定
評 価 ：◎…均一塗膜形成
〇…極く一部タレ、ワレ発生
×…多くタレ、ワレ発生
第１表より明らかの如く本発明の水性被覆組成
物は優れた塗膜性能を有していたが、セメントを
過剰に添加した比較例１、中空状無機物粉末を含
まない比較例２、エポキシ樹脂を含まない比較例
３、アクリル樹脂を含まない比較例４、酢酸ビニ
ル樹脂を使用した比較例５は、いずれも塗膜性能
が劣つていた。
<Industrial Field of Application> The present invention relates to an aqueous coating composition for cement substrates having an uneven surface that does not easily cause sagging or cracking. <Prior Art and Problems> Building materials using cement product substrates such as mortar, concrete, and slate are often used for exterior materials, block walls, and the like. As the lifespan of buildings increases, these building materials are required to have highly durable finishes, and with the mass production of building materials, speedy painting finishing is also required. A coating composition that satisfies this requirement has not yet been developed. In other words, conventionally, for example, painting uncured cement products requires 1
After being left for up to two weeks, the PH and water content of the surface of the cement product must be adjusted and then a coating composition applied, otherwise coating defects such as peeling and discoloration may occur. In addition, if a conventional coating composition, for example, a coating composition containing acrylic emulsion resin and cement as main components, is applied and a topcoat is applied with a solvent-based paint with excellent weather resistance, the undercoat film will have solvent resistance. As a result, there were drawbacks such as reduced gloss and wrinkles in the coating film. Recently, cement product substrates with wavy or random uneven patterns formed on their surfaces have come into widespread use in order to impart flexibility to cement product substrates. If a thick film of paint is applied to a cement substrate with such an uneven surface, the paint will sag, and the paint will accumulate in the recesses, resulting in a thicker film than necessary.Conversely, the convex parts will become a thin film, making it difficult to form a uniform paint film. Furthermore, there were other drawbacks such as cracking in the coating film. SUMMARY OF THE INVENTION In view of the above-mentioned prior art, it is an object of the present invention to provide a coating composition with excellent performance that does not have the above-mentioned drawbacks. <Means for solving the problem> These objectives are as follows: (a) (i) Copolymer emulsion resin of acrylic acid or methacrylic acid alkyl ester (alkyl group has 1 to 8 carbon atoms) solid content
...2-15% by weight (ii) Solid content of bisphenol type epoxy emulsion resin ...1-5% by weight (iii) Hollow inorganic powder with an average particle size of 30-300μ
...10-40% by weight (iv) Cement ...20-60% by weight (v) Coloring pigment ...1-5% by weight (vi) 0.8-1.2% of the epoxy emulsion resin
It consists of an equivalent amount of polyamide resin or aliphatic polyvalent amine curing agent, and if necessary, a small amount of various additives, and the weight ratio of [(i) + (ii)] / (iv) is in the range of (0.15 to 0.28). This is achieved by an aqueous coating composition having a viscosity of 50 to 500 poise, consisting of 100 parts by weight of a mixture of: (a) and (b) 15 to 70 parts by weight of water. The coating composition of the present invention can be immediately coated not only on hardened cement substrates with uneven surfaces but also on uncured cement substrates, thereby shortening the construction period.
In addition, thick coatings can be applied at room temperature or forced drying without causing sagging or cracking, making it possible to apply not only on-site painting but also factory line painting, and furthermore, it is possible to mix specific organic and inorganic composite materials in specific proportions. As a result, a coating film with excellent long-term durability, adhesion, and alkali resistance can be obtained, and even when a water-based or solvent-based paint is applied as a top coat, a coating film without the aforementioned coating defects can be obtained. is possible. The carbon number of acrylic acid, which is a component constituting the copolymerized emulsion resin of acrylic acid or methacrylic acid alkyl ester used in the present invention, is 1.
~8 alkyl ester monomers, the alkyl groups of the C1-8 alkyl ester monomers of methacrylic acid include methyl, ethyl, n-butyl,
Isobutyl, tert-butyl, 2-ethylhexyl, benzyl, propyl, isopropyl,
sec-butyl etc. are typically used.
Alkyl groups having 9 or more carbon atoms may generate a gel during emulsion polymerization, or the emulsion particles may become highly hydrophobic, making them unsuitable for the synthesis of emulsion resins for cement admixture. Also used are copolymer emulsion resins containing up to 30% by weight of styrene in these acrylic acid (or methacrylic acid) alkyl esters. However, if styrene is used in an amount of 30% by weight or more, the weather resistance of the resulting emulsion coating film will be significantly reduced, making it undesirable for use as an outdoor emulsion resin that requires durability. Particularly preferred acrylic acid or methacrylic acid alkyl esters include methyl methacrylate, ethyl acrylate, butyl acrylate, acrylic acid 2
-Ethylhexyl, and when styrene is used, it is particularly preferably 20% by weight or less. Furthermore, if necessary, it is also possible to copolymerize several weight percent of a functional group monomer such as acrylic acid, methacrylic acid, or 2-hydroxyethyl methacrylate. Since the copolymerized emulsion resin of acrylic acid (or methacrylic acid) alkyl ester used in the present invention is mixed with cement, it is preferable to have alkali resistance and excellent cement mixing stability. Nonionic surfactants are suitable as emulsifiers. Advantageously, these acrylic emulsion resins have a molecular weight of 50,000 to 300,000, preferably 100,000 to 200,000. Also, the minimum film forming temperature is 5℃
The following are preferred. This is because if it exceeds this range, cracks are likely to occur during film formation. In addition, the viscosity of acrylic emulsion resin when the solid content is 40% by weight is
100cps or less is preferable. If it exceeds that range, it is necessary to increase the amount of water to lower the viscosity, which lowers the solids content and makes the coating film more likely to crack due to fading during drying. These resins are blended in the mixture (a) at a solid content of 2 to 15% by weight. If the resin content is less than 2% by weight, the initial hardness and weather resistance of the coating film will decrease, and efflorescence will likely occur. On the other hand, if the resin content exceeds 15% by weight, thick film coating (approximately 0.5 to 10 mm)
It is not possible to do so, and cracks are more likely to occur. The bisphenol type epoxy emulsion resin used in the present invention is made into a water-dispersible type by using an aromatic diglycidyl ether obtained from bisphenol A and epichlorohydrin and having an average molecular weight of 350 to 1000 as an emulsifier. Yes, the resin solid content is 1 to 5 in the above mixture (a).
Weight percentages are used. If the resin content is less than 1% by weight, the adhesion to the substrate will be reduced, and if it exceeds 5% by weight, the weather resistance of the formed coating film will be significantly reduced. The hollow inorganic powder used in the present invention is a powder that is completely hollow inside and the hollow part is completely closed by a shell, or a powder that is in the form of independent or open cells with internal melting walls such as pumice. The average particle size is suitably about 30 to 300μ. If the average particle size is less than 30μ, cracking tends to occur, and the strength of the coating decreases, and if it exceeds 30μ, it tends to sag, and the coating lacks smoothness, resulting in poor appearance. Examples of hollow inorganic powder include glass balloons,
Shirasu balloon, aluminosilicate balloon,
Typical examples include silica balloons, alumina balloons, zirconia balloons, and carbon balloons. In particular, from the viewpoint of coating film strength, it is desirable to have a 50% breaking hydrostatic pressure of 10 Kg/cm 2 or more, and specific examples include glass balloons, aluminosilicate balloons, alumina balloons, and zirconia balloons. This hollow inorganic powder is blended to obtain coatings without sagging or cracking even in thick coatings, to improve brittleness, and to increase the coating composition.Furthermore, it reduces the specific gravity of the coating composition and improves coating workability. It also has the effect of improving. Note that when a thick film is applied to a cement substrate having an uneven surface, sagging and cracking cannot be prevented using only ordinary fillers such as extender pigments and aggregates. The hollow inorganic powder is the above mixture (a)
The above effects can be obtained within this range. Examples of the cement used in the present invention include Portland cement, blast furnace cement, silica cement, and alumina cement, but the type thereof is not particularly limited. In the present invention, cement is blended in the above mixture (a) in a proportion of 20 to 60% by weight. If the cement content is less than 20% by weight, cracking is likely to occur when the film is thick, and adhesion is reduced. On the other hand, if it exceeds 60% by weight, the coating film becomes brittle and efflorescence is likely to occur. The colored pigments used in the present invention are typically general inorganic pigments, but depending on the color, organic pigments having alkali resistance and weather resistance may also be used. For example, to color black, use carbon black, iron oxide, etc., for red, use Bengara, etc., for green, use chromium oxide, etc., for blue, use cyanine blue, etc., for white, use titanium dioxide, etc. can be exemplified. The coloring pigment in the above mixture (a) is 1-
It is blended at a ratio of 5% by weight, and sufficient coloring can be achieved by blending within this range. The curing agent for epoxy resins used in the present invention includes polyamide resins obtained by polycondensation of diamines or diamine derivatives with dibasic acids or dibasic acid derivatives, or aliphatic resins such as ethylenediamine, diethylenetriamine, triethylenetetramine, etc. Polyvalent amines or aliphatic polyvalent amines modified with phenolic resins, epoxy resins, etc. are suitable. It is necessary to use the curing agent in an amount of 0.8 to 1.2 equivalents of the epoxy group of the epoxy resin. If the amount is less than 0.8 equivalents or more than 1.2 equivalents, the original properties of the epoxy resin, such as adhesion and flexibility, will be significantly reduced, and other performances such as durability will also be deteriorated, which is not preferable. Examples of additives used in the present invention include dispersants, antifoaming agents, thickeners, etc. to improve pigment dispersibility, coating workability, storage stability, etc.
Examples include preservatives, antifungal agents, and film-forming aids for improving the film-forming properties of coatings. In addition, in the present invention, in order to improve the brittleness and increase the weight of the coating film, extender pigments such as calcium carbonate, barium sulfate, talc, clay, etc.; fillers such as aggregates with a particle size of 300 μm or less such as silica sand are added to the above mixture (a). It is also possible to incorporate it within the range of 40% by weight or less. The weight ratio of the sum of (i) the solid content of copolymerized emulsion resin of acrylic acid (or methacrylic acid) alkyl ester and (ii) the solid content of epoxy emulsion resin in the above mixture (a), and (iv) cement. is [(i)+(ii)]/
(iv)=0.15-0.28. If this ratio is less than 0.15, the initial hardness of the coating film will not be achieved and efflorescence will occur, making it impossible to form a thick film with good coating performance.On the other hand, if this ratio is greater than 0.28 In some cases, when the film is thick, cracks tend to occur. The weight ratio of [(ii)+(vi)]/[(i)+(ii)+(iv)] is particularly preferably 0.2 to 0.45; if this ratio is smaller than 0.2, the adhesion will decrease; When this ratio is greater than 0.45, weather resistance decreases. The aqueous coating composition of the present invention comprises 100% of the above mixture (a)
The composition has a viscosity of 50 to 500 poise by blending 15 to 70 parts by weight of water. This is because, within this range, cement hardenability and painting workability are good. If the amount of water is less than 15 parts by weight, the acrylic emulsion will tend to aggregate when mixed with cement, while if it exceeds 70 parts by weight, the solid content will decrease and it will become loose and crack when drying. The present inventors have used vinyl acetate-based emulsion resins such as vinyl acetate resin, vinyl acetate-acrylic resin, ethylene-vinyl acetate resin, or styrene-butadiene-based emulsion resin, which are typically used in the paint industry. We also considered emulsion resin, but
For example, the former has poor weather resistance and alkali resistance, and also lacks long-term durability, while the latter has poor weather resistance and has been found to be inappropriate for the present invention. The aqueous coating composition of the present invention as described above is applied to the surface of a cement substrate by a conventional coating method such as spray coating, roller coating, flow coating, etc. The aqueous coating composition of the present invention can form a good coating even with a thickness of about 0.5 to 10 mm, and can be used at room temperature or at 100 mm.
Force dry at temperatures below ℃. Moreover, a top coat can be further applied satisfactorily to the obtained coating film. The materials used as this top coat include, for example, acrylic ester copolymer resin, styrene-
Styrene-based products such as acrylic ester copolymers, vinyl acetate-based products such as vinyl acetate-acrylic ester copolymers, vinyl chloride-based products such as vinyl chloride-acrylic ester copolymers, and acrylic acids. Ester-based acrylic urethane, styrene-acrylic ester-based acrylic urethane resin, solvent-based paints based on fluorine-containing copolymer resins that contain fluoroolefin and vinyl ether as essential components and have a crosslinking site, acrylic ester-based, Water-based paints based on emulsion resins such as styrene-based styrene-acrylic ester copolymers, vinyl acetate-based vinyl acetate-acrylic ester copolymers, unsaturated polyesters, polyester (meth)acrylates, urethane ( Examples include UV-curable paints of meth)acrylate, epoxy(meth)acrylate, and acrylic(meth)acrylate resin types. <Effects of the Invention> The coating composition of the present invention does not sag even when applied to a cement substrate having an uneven surface, provides a coating film with a uniform thickness, and can be coated in a thick film without causing cracks or the like. It is. Furthermore, since it can be applied to uncured cement substrates, the construction period can be shortened, and it also has excellent long-term durability, adhesion, alkali resistance, and excellent topcoat properties. The present invention will be explained in more detail with reference to Examples below. The blending ratios of the compositions in Examples and Comparative Examples are shown in parts by weight. Examples 1 to 3 and Comparative Examples 1 to 5 An aqueous coating composition having the formulation shown in Table 1 was sprayed onto the surface of a corrugated asbestos slate board with an average height difference of about 7 mm to a dry film thickness of about 2.0 mm. The coating film was cured by applying it and leaving it at room temperature for 7 days. The test results of the resulting colored asbestos slate board for adhesion, accelerated efflorescence test, freeze-thaw cycle test, accelerated weather resistance test, and coating film appearance are shown in the lower row of Table 1. The test method and evaluation were performed as follows. (1) Adhesion Test method: 2mm cellophane tape peeling test of coating film Evaluation: ◎...50/50, 〇...49/50 to 26/50, ×...
25/50 or less (2) Efflorescence acceleration test Test method: 20 cycles in saturated slaked lime atmosphere [5℃ x 16 hours → 20℃ x 8 hours] Evaluation: ◎...No abnormality at all, 〇...Very few Abnormality, ×...Full abnormality (3) Freeze-thaw cycle test Test method: [-20℃ x 16 hours freezing → room temperature x 8 hours] 35 cycles Evaluation: ◎...No abnormality, 〇...Very small abnormality Yes, ×...Full abnormality (cracking) (4) Accelerated weathering test Test method: Sunshine carbon irradiation for 2000 hours Evaluation: ◎...No abnormality, ○...Very few abnormalities, ×...Full abnormality Yes (with yoking) (5) Paint film appearance Test method: Visual judgment Evaluation: ◎...Uniform paint film formation 〇...Very little sagging and cracking ×...Many sagging and cracking As is clear from Table 1. The aqueous coating composition of the invention had excellent coating performance, but Comparative Example 1 in which cement was added in excess, Comparative Example 2 in which hollow inorganic powder was not included, Comparative Example 3 in which epoxy resin was not included, and Comparative Example 3 in which acrylic resin was not included. Comparative Example 4, which did not contain a resin, and Comparative Example 5, which used vinyl acetate resin, both had poor coating film performance.
【表】【table】
Claims (1)
ルエステルの共重合エマルジヨン樹脂（前記
アルキル基は炭素数１〜８を有する）固形分
……２〜15重量％ (ii) ビスフエノール型エポキシエマルジヨン樹
脂固形分 ……１〜５重量％ (iii) 平均粒径30〜300μの中空状無機物物粉末
……10〜40重量％ (iv) セメント ……20〜60重量％ (v) 着色顔料 ……１〜５重量％ (vi) 前記エポキシエマルジヨン樹脂の0.8〜1.2
当量のポリアミド樹脂又は脂肪族多価アミン
硬化剤、及びさらに必要に応じ充填剤、添加
剤からなり、 かつ〔(i)＋(ii)〕／(iv)の重量比が0.15〜0.28
の範囲である混合物100重量部 ならびに (b) 水 15〜70重量部 からなる粘度50〜500ポイズの、凹凸表面を有す
るセメント基板用水性被覆組成物。 ２ 前記共重合エマルジヨン樹脂(a)(i)の最低造膜
温度が５℃以下であることを特徴とする、特許請
求の範囲第１項記載の水性被覆組成物。[Scope of Claims] 1 (a) (i) Copolymer emulsion resin of acrylic acid or methacrylic acid alkyl ester (the alkyl group has 1 to 8 carbon atoms) solid content
...2-15% by weight (ii) Solid content of bisphenol type epoxy emulsion resin ...1-5% by weight (iii) Hollow inorganic powder with an average particle size of 30-300μ
...10-40% by weight (iv) Cement ...20-60% by weight (v) Coloring pigment ...1-5% by weight (vi) 0.8-1.2% of the epoxy emulsion resin
It consists of an equivalent amount of polyamide resin or aliphatic polyvalent amine curing agent, and fillers and additives as necessary, and the weight ratio of [(i)+(ii)]/(iv) is 0.15 to 0.28.
An aqueous coating composition for a cement substrate having a textured surface and having a viscosity of 50 to 500 poise, comprising: 100 parts by weight of a mixture in the range of (a) and (b) 15 to 70 parts by weight of water. 2. The aqueous coating composition according to claim 1, wherein the copolymer emulsion resin (a)(i) has a minimum film forming temperature of 5° C. or lower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31523686A JPS63162770A (en) | 1986-12-25 | 1986-12-25 | Water-base covering composition for cement base plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31523686A JPS63162770A (en) | 1986-12-25 | 1986-12-25 | Water-base covering composition for cement base plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63162770A JPS63162770A (en) | 1988-07-06 |
| JPH0116872B2 true JPH0116872B2 (en) | 1989-03-28 |
Family
ID=18063017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31523686A Granted JPS63162770A (en) | 1986-12-25 | 1986-12-25 | Water-base covering composition for cement base plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63162770A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5435842A (en) * | 1991-08-12 | 1995-07-25 | Cosmo Research Institute | Vibration damping thick-film coating composition and method of forming the coated film |
| JP5209222B2 (en) * | 2007-03-15 | 2013-06-12 | 東亜道路工業株式会社 | Coating composition, coating film and coating method |
| JP5248406B2 (en) * | 2009-04-30 | 2013-07-31 | 大日本塗料株式会社 | Manufacturing method of heat-insulating and insulating tiles |
| PT106591B (en) * | 2012-10-22 | 2014-11-10 | Secil S A Companhia Geral De Cal E Cimento S A | WHITE OR COLORED CIMENTAL COATING WITH HYDROCHROMIC PROPERTIES |
| CN103740214B (en) * | 2013-11-04 | 2016-02-10 | 安徽菱湖漆股份有限公司 | A kind of high-strength high temperature-resistant cracking resistance elastic water proofing paint and preparation method thereof |
-
1986
- 1986-12-25 JP JP31523686A patent/JPS63162770A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63162770A (en) | 1988-07-06 |
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