JPH03220262A - Unsaturated polyester resin composition for artificial marble - Google Patents
Unsaturated polyester resin composition for artificial marbleInfo
- Publication number
- JPH03220262A JPH03220262A JP1477890A JP1477890A JPH03220262A JP H03220262 A JPH03220262 A JP H03220262A JP 1477890 A JP1477890 A JP 1477890A JP 1477890 A JP1477890 A JP 1477890A JP H03220262 A JPH03220262 A JP H03220262A
- Authority
- JP
- Japan
- Prior art keywords
- polyester resin
- unsaturated polyester
- artificial marble
- refractive index
- transparency
- 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.)
- Pending
Links
- 239000002928 artificial marble Substances 0.000 title claims abstract description 12
- 229920006337 unsaturated polyester resin Polymers 0.000 title claims description 30
- 239000000203 mixture Substances 0.000 title claims description 15
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002253 acid Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 10
- 239000011347 resin Substances 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims abstract description 5
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 4
- 239000011256 inorganic filler Substances 0.000 claims description 3
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 15
- 239000000945 filler Substances 0.000 abstract description 11
- 238000005266 casting Methods 0.000 abstract description 9
- 229920001225 polyester resin Polymers 0.000 abstract 3
- 239000004645 polyester resin Substances 0.000 abstract 3
- 238000013329 compounding Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 229920006305 unsaturated polyester Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000003365 glass fiber Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 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 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 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
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- 229920001567 vinyl ester resin Polymers 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- JUDXBRVLWDGRBC-UHFFFAOYSA-N [2-(hydroxymethyl)-3-(2-methylprop-2-enoyloxy)-2-(2-methylprop-2-enoyloxymethyl)propyl] 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC(CO)(COC(=O)C(C)=C)COC(=O)C(C)=C JUDXBRVLWDGRBC-UHFFFAOYSA-N 0.000 description 1
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 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
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 238000004898 kneading Methods 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
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は不飽和ポリエステル樹脂組成物に関し、より詳
細には透明性があり、加熱加圧成形による人造大理石の
大量生産を可能とする人造大理石用不飽和ポリエステル
樹脂組成物に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to an unsaturated polyester resin composition, and more specifically to an artificial marble that is transparent and that enables mass production of artificial marble by heat and pressure molding. The present invention relates to an unsaturated polyester resin composition for use.
（従来の技術）
独特な深みのある色調を特徴とする樹脂製の人造大理石
は複雑な形状の成形が可能であり、最近種々の用途に用
いられている。樹脂製の人造大理石は、アクリル樹脂を
ベースとしたものと不飽和ポリエステル樹脂をベースと
した２種に大別される。特に不飽和ポリエステル樹脂を
ベースとしたものは複雑な形状への対応、耐熱性に優れ
、需要の伸びが著しい。(Prior Art) Artificial marble made of resin, which is characterized by a unique deep color tone, can be molded into complex shapes and has recently been used for various purposes. Resin-made artificial marble is roughly divided into two types: those based on acrylic resin and those based on unsaturated polyester resin. In particular, products based on unsaturated polyester resins can be made into complex shapes and have excellent heat resistance, and demand is growing rapidly.
（発明が解決しようとする課題）
しかし、不飽和ポリエステル樹脂をベースとした人造大
理石は１表面にゲルコート層を作り、本体を注形法によ
り成形し、裏面に着色層、ＦＲＰにて補強すると言う複
雑な成形方法により、独特の色調と深みを得ている。従
って、生産性は極めて低く、手作りに近い。生産性を上
げるためにはＢＭＣ，ＳＭＣのプレス成形に代表される
注形層と補強層を一体化した成形材料による加圧加熱成
形法が検討されているが、１）ガラス繊維と無機充填材
の併用、２）表面平滑性の確保、偏肉部のクラック防止
に用いられる低収縮剤の添加等により成形品の透明性の
低下が著しい。透明性を低下させる一因に不飽和ポリエ
ステル樹脂硬化物の屈折率と充填材の屈折率のズレがあ
り、充填材として通常の炭酸カルシウムよりも屈折率が
不飽和ポリエステル樹脂硬化物に近い水酸化アルミニウ
ム、ガラス質フリットまたはガラス粉が用いられるが、
透明性は注形法に比べて数段劣る。さらに屈折率が充填
材の屈折率に近いビニルエステル樹脂を用いる等の検討
もなされているが、樹脂系の着色、光沢の低下、成形性
の低下とこれにともなう成形外観、レベリングの低下が
避けられず、実用に供しえるレベルに達していない。(Problem to be solved by the invention) However, for artificial marble based on unsaturated polyester resin, a gel coat layer is formed on one surface, the main body is molded by a casting method, and the back side is reinforced with a colored layer and FRP. A unique color tone and depth are achieved through a complex molding method. Therefore, productivity is extremely low and it is almost handmade. In order to increase productivity, pressure and heat molding methods using molding materials that integrate a casting layer and a reinforcing layer, as typified by press molding of BMC and SMC, are being considered.1) Glass fiber and inorganic filler 2) addition of a low-shrinkage agent used to ensure surface smoothness and prevent cracks in uneven thickness areas, etc., can significantly reduce the transparency of the molded product. One of the reasons for the decrease in transparency is the difference between the refractive index of the cured unsaturated polyester resin and the refractive index of the filler, and as a filler, hydroxide has a refractive index closer to that of the cured unsaturated polyester resin than normal calcium carbonate. Aluminum, vitreous frit or glass powder is used,
Transparency is much lower than that of the casting method. Furthermore, consideration has been given to using vinyl ester resins whose refractive index is close to that of the filler, but this can avoid coloring of the resin system, reduction in gloss, deterioration in moldability, and accompanying deterioration in molded appearance and leveling. It has not reached a level where it can be put to practical use.
従って、本発明の目的は、単に屈折率が不飽和ポリエス
テル樹脂硬化物に近い充填材を用いるだけではなく、さ
らに特定の組成の不飽和ポリエステル樹脂を用いて樹脂
硬化物と充填材の屈折率を特定の範囲で合わせることに
より、注形法に匹敵する透明性１表面平滑性、光沢を有
する人造大理石の加熱加圧成形を可能とする不飽和ポリ
エステル樹脂組成物を提供することにある。Therefore, an object of the present invention is not only to use a filler whose refractive index is close to that of a cured unsaturated polyester resin, but also to use an unsaturated polyester resin with a specific composition to improve the refractive index of the cured resin and the filler. The object of the present invention is to provide an unsaturated polyester resin composition which, by combining the ingredients within a specific range, enables heat-pressure molding of artificial marble having transparency, surface smoothness, and gloss comparable to that of the casting method.
（課題を解決するための手段）
本発明者らは、前述のような従来技術の欠点を解決する
ために、鋭意研究した結果、１）屈折率が特定の範囲の
不飽和ポリエステル樹脂と充填材の組み合わせにより注
形法に匹敵する透明性、裏面平滑性、光沢を有する人造
大理石の加熱加圧成形を可能とする不飽和ポリエステル
樹脂組成物が得られる、２）２塩基酸成分の一部がテレ
フタール酸からなる不飽和ポリエステルを用いた樹脂硬
化物にビニルエステル樹脂とほぼ同等の高い屈折率が得
られ、かつ極めて淡色である、３）従来透明感を低下さ
せる一因と見られた充填材添加量に関して特定の添加量
以上とすると透明感その他の質感が向上すると言う新規
な事実を見い出して、本発明を完成するに至った。(Means for Solving the Problems) In order to solve the drawbacks of the prior art as described above, the present inventors have conducted extensive research and found that 1) an unsaturated polyester resin and a filler having a refractive index in a specific range; By the combination of the following, an unsaturated polyester resin composition is obtained that enables heating and pressure molding of artificial marble with transparency, back surface smoothness, and gloss comparable to that of the casting method. 2) A part of the dibasic acid component is A cured resin using unsaturated polyester made of terephthalic acid has a high refractive index almost equivalent to that of vinyl ester resin, and is extremely light in color. 3) A filler that was previously thought to be a factor in reducing transparency. The present invention was completed based on the discovery of the novel fact that transparency and other textures improve when the amount added is above a specific amount.
すなわち、本発明は、２塩基酸成分の２０〜５０モル％
がテレフタール酸からなり、樹脂硬化物の屈折率が１．
５４５〜１．５７５である不飽和ポリエステル樹脂１０
０重量部に対して水酸化アルミニウム、ガラス粉等から
選ばれた屈折率が１．５４５〜１．５７５である少なく
とも１種の無機充填材３００〜５５０重量部を含有する
ことを特徴とする人造大理石用不飽和ポリエステル樹脂
組成物に関するものである。That is, in the present invention, 20 to 50 mol% of the dibasic acid component
is made of terephthalic acid, and the refractive index of the cured resin is 1.
545-1.575 unsaturated polyester resin 10
0 parts by weight of at least one inorganic filler selected from aluminum hydroxide, glass powder, etc. and having a refractive index of 1.545 to 1.575. This invention relates to an unsaturated polyester resin composition for marble.
（作用）
本発明で用いられる不飽和ポリエステル樹脂とは、不飽
和２塩基酸、飽和２塩基酸および多価アルコールを縮合
反応させて得られる不飽和ポリエステルを架橋性単量体
に溶解して得られるものであるが、不飽和ポリエステル
の２塩基酸成分の２０〜５０モル％がテレフタール酸か
らなることを特長とする。不飽和ポリエステルの２塩基
酸成分に占めるテレフタール酸の割合が２０モル％以下
では不飽和ポリエステル樹脂硬化物の屈折率が１．５４
５以下となり本発明の効果が得られず、テレフタール酸
の割合が５０モル％以上では不飽和２塩基酸量により規
制される反応性の低下による光沢の低下等、外観上の欠
点が生じる。(Function) The unsaturated polyester resin used in the present invention is obtained by dissolving an unsaturated polyester obtained by condensing an unsaturated dibasic acid, a saturated dibasic acid, and a polyhydric alcohol in a crosslinkable monomer. However, it is characterized in that 20 to 50 mol% of the dibasic acid component of the unsaturated polyester consists of terephthalic acid. When the proportion of terephthalic acid in the dibasic acid component of the unsaturated polyester is 20 mol% or less, the refractive index of the cured unsaturated polyester resin is 1.54.
If the proportion of terephthalic acid is less than 50, the effect of the present invention cannot be obtained, and if the proportion of terephthalic acid is more than 50 mol %, defects in appearance such as a decrease in gloss due to a decrease in reactivity regulated by the amount of unsaturated dibasic acid occur.
不飽和ポリエステルを得るために使用される不飽和２塩
基酸としてはフマル酸、マレイン酸、無水マレイン酸等
が、飽和２塩基酸としては、テレフタール酸の他に、フ
タル酸、無水フタール酸、イソフタル酸、コハク酸、ア
ジピン酸、セバシン酸等が挙げられる。Unsaturated dibasic acids used to obtain unsaturated polyesters include fumaric acid, maleic acid, maleic anhydride, etc.; saturated dibasic acids include terephthalic acid, phthalic acid, phthalic anhydride, isophthalic acid, etc. Examples include acids such as succinic acid, adipic acid, and sebacic acid.
不飽和ポリエステル樹脂を得るために使用される多価ア
ルコールとしてはエチレングリコール。Ethylene glycol is the polyhydric alcohol used to obtain unsaturated polyester resins.
ジエチレングリコール、トリエチレングリコール、ポリ
エチレングリコール、プロピレングリコール、ジプロピ
レングリコール、ネオペンチルグリコール、ビスフェノ
ールＡ、水素添加ビスフェノールＡ等が挙げられる。Examples include diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, neopentyl glycol, bisphenol A, hydrogenated bisphenol A, and the like.
不飽和ポリエステル樹脂を得るために使用される架橋性
単量体としてはスチレン、α−メチルスチレン、ジビニ
ルベンゼン、ジアリルフタレート、アクリル酸エステル
類、メタクリル酸エステル類、トリメチロールプロパン
トリアクリレート、トリメチロールプロパントリメタク
リレート、ペンタエリスリトールトリアクリレート、ペ
ンタエリスリトールトリメタクリレート等が挙げられる
。本発明に用いられる架橋性単量体は１種に限定される
ものではなく、２種以上の併用も可能である。Crosslinkable monomers used to obtain unsaturated polyester resins include styrene, α-methylstyrene, divinylbenzene, diallyl phthalate, acrylic esters, methacrylic esters, trimethylolpropane triacrylate, and trimethylolpropane. Examples include trimethacrylate, pentaerythritol triacrylate, pentaerythritol trimethacrylate, and the like. The crosslinkable monomers used in the present invention are not limited to one type, and two or more types can be used in combination.
架橋性単量体の不飽和ポリエステル樹脂中に占める割合
は２５〜５５重量％である。The proportion of the crosslinkable monomer in the unsaturated polyester resin is 25 to 55% by weight.
不飽和ポリエステル樹脂は１種に限定するものではなく
、２種以上の不飽和ポリエステル樹脂の併用により不飽
和ポリエステルの合計量に対して２塩基酸成分の２０〜
５０モル％をテレフタール酸とし、樹脂硬化物の屈折率
を１．５４５〜１．５７５の範囲としてもよい。The unsaturated polyester resin is not limited to one type, but by using two or more types of unsaturated polyester resin in combination, the amount of the dibasic acid component is 20 to 20% based on the total amount of unsaturated polyester.
Terephthalic acid may account for 50 mol%, and the refractive index of the cured resin may be in the range of 1.545 to 1.575.
本発明に用いられる屈折率が１．５４５〜１．５７５で
ある充填材としては水酸化アルミニウム、ガラス質フリ
ット、ガラス粉等が挙げられる。その添加量は前記の不
飽和ポリエステル樹脂１００重量部に対して３００〜５
５０重量部であり、添加量が３００重量部以下では透明
性その他に注形法に匹敵する質感が得られず、また、５
５０重量部以上ではガラス繊維の混線等の作業性の低下
により透明性その他の質感の低下が生じる。本発明の効
果を損わない範囲であれば、炭酸カルシウム、クレーそ
の他の一般に使用される充填材を併用してもよい。Examples of the filler having a refractive index of 1.545 to 1.575 used in the present invention include aluminum hydroxide, vitreous frit, and glass powder. The amount added is 300 to 5 parts by weight per 100 parts by weight of the unsaturated polyester resin.
If the amount added is less than 300 parts by weight, transparency and other textures comparable to those obtained by the casting method cannot be obtained;
If it exceeds 50 parts by weight, workability is lowered due to crosslinking of glass fibers, resulting in a decrease in transparency and other textures. Calcium carbonate, clay, and other commonly used fillers may be used in combination as long as they do not impair the effects of the present invention.
本発明に用いられるガラス繊維は、一般に不飽和ポリエ
ステル樹脂組成物に用いられるものであり、その繊維長
、繊維径、表面処理等を特に制限するものではない。不
飽和ポリエステル樹脂組成物中に占める割合は用途によ
って異なるが、３〜２０％である。ガラス繊維の他に繊
維状補強材としてアスベスト、アルミナウィスカー等の
無機繊維、ビニロン繊維、ポリエステル繊維、アクリル
繊維、その他の有機繊維等を併用してもよい。The glass fibers used in the present invention are generally used in unsaturated polyester resin compositions, and there are no particular restrictions on the fiber length, fiber diameter, surface treatment, etc. The proportion in the unsaturated polyester resin composition varies depending on the use, but is 3 to 20%. In addition to glass fibers, inorganic fibers such as asbestos and alumina whiskers, vinylon fibers, polyester fibers, acrylic fibers, and other organic fibers may be used in combination as fibrous reinforcing materials.
本発明の不飽和ポリエステル樹脂組成物は、上記のほか
に、本発明の効果を損わない範囲で公知・公用の熱可塑
樹脂で低収縮化したものであってもよく、低収縮剤とし
て用いられる熱可塑樹脂としては、ポリスチレン、ポリ
メチルメタクリレート等が挙げられる。さらにステアリ
ン酸亜鉛等の内部離型剤、過酸化ベンゾイル等の硬化触
媒、増粘剤、着色剤等一般に不飽和ポリエステル樹脂組
成物に用いられる添加剤は本発明の効果を損わない範囲
で使用してもよい。In addition to the above, the unsaturated polyester resin composition of the present invention may be made of a known/commonly used thermoplastic resin that has low shrinkage as long as it does not impair the effects of the present invention, and may be used as a low shrinkage agent. Examples of thermoplastic resins include polystyrene, polymethyl methacrylate, and the like. Furthermore, additives commonly used in unsaturated polyester resin compositions, such as internal mold release agents such as zinc stearate, curing catalysts such as benzoyl peroxide, thickeners, and colorants, are used within the range that does not impair the effects of the present invention. You may.
以下、実施例により本発明を具体的に説明する。Hereinafter, the present invention will be specifically explained with reference to Examples.
（実施例）
第１表に示す種々の配合をバンバリー型ニーダ−にて混
練して作成したＢＭＣを成形温度１４０℃、成形圧力１
００ ｋｇ／ｄ、成形時間５分で成形を行い、厚さ５ｍ
の平板を得た。その結果、いづれの実施例においても表
面平滑性、表面光沢が良好で、かつ深みのある透明感を
有する成形品が得られた。(Example) BMC prepared by kneading various formulations shown in Table 1 in a Banbury type kneader was prepared at a molding temperature of 140°C and a molding pressure of 1.
00 kg/d, molding time 5 minutes, thickness 5m
A flat plate was obtained. As a result, molded articles with good surface smoothness and surface gloss and deep transparency were obtained in all Examples.
（比較例）
第２表に示す種々の配合よりなるＢＭＣを作成して成形
温度１４０℃、成形圧力１００ｋｇ／ａ＃、成形時間５
分で成形を行い、厚さ５＋＋ａの平板を得た。その結果
、実施例に見られるような質感、透明感を有する成形品
は得られなかった。(Comparative example) BMCs made of various formulations shown in Table 2 were prepared at a molding temperature of 140°C, a molding pressure of 100 kg/a#, and a molding time of 5.
Molding was carried out in minutes to obtain a flat plate with a thickness of 5++a. As a result, a molded article having the texture and transparency seen in the Examples could not be obtained.
（発明の効果）
本発明の不飽和ポリエステル樹脂組成物を加熱加圧成形
することにより、注形法に匹敵する深みのある質感を有
する天理石調の成形品が得られる。(Effects of the Invention) By heating and press-molding the unsaturated polyester resin composition of the present invention, an astronomical stone-like molded article having a deep texture comparable to that obtained by the casting method can be obtained.
Claims (1)
らなり、樹脂硬化物の屈折率が１．５４５〜１．５７５
である不飽和ポリエステル樹脂１００重量部に対して水
酸化アルミニウム、ガラス粉等から選ばれた屈折率が１
．５４５〜１．５７５である少なくとも１種の無機充填
材３００〜５５０重量部を含有することを特徴とする人
造大理石用不飽和ポリエステル樹脂組成物。20 to 50 mol% of the dibasic acid component consists of terephthalic acid, and the refractive index of the cured resin is 1.545 to 1.575.
The refractive index selected from aluminum hydroxide, glass powder, etc. is 1 for 100 parts by weight of unsaturated polyester resin.
．． An unsaturated polyester resin composition for use in artificial marble, comprising 300 to 550 parts by weight of at least one inorganic filler having a molecular weight of 545 to 1.575.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1477890A JPH03220262A (en) | 1990-01-26 | 1990-01-26 | Unsaturated polyester resin composition for artificial marble |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1477890A JPH03220262A (en) | 1990-01-26 | 1990-01-26 | Unsaturated polyester resin composition for artificial marble |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03220262A true JPH03220262A (en) | 1991-09-27 |
Family
ID=11870512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1477890A Pending JPH03220262A (en) | 1990-01-26 | 1990-01-26 | Unsaturated polyester resin composition for artificial marble |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03220262A (en) |
-
1990
- 1990-01-26 JP JP1477890A patent/JPH03220262A/en active Pending
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