JPH0468325B2 - - Google Patents
Info
- Publication number
- JPH0468325B2 JPH0468325B2 JP21467586A JP21467586A JPH0468325B2 JP H0468325 B2 JPH0468325 B2 JP H0468325B2 JP 21467586 A JP21467586 A JP 21467586A JP 21467586 A JP21467586 A JP 21467586A JP H0468325 B2 JPH0468325 B2 JP H0468325B2
- Authority
- JP
- Japan
- Prior art keywords
- polyester resin
- unsaturated polyester
- amount
- molding material
- resin molding
- 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
- 229920006337 unsaturated polyester resin Polymers 0.000 claims description 19
- 239000012778 molding material Substances 0.000 claims description 16
- 239000000945 filler Substances 0.000 claims description 10
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 6
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 6
- KDGNCLDCOVTOCS-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy propan-2-yl carbonate Chemical compound CC(C)OC(=O)OOC(C)(C)C KDGNCLDCOVTOCS-UHFFFAOYSA-N 0.000 claims description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 238000009835 boiling Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 235000019645 odor Nutrition 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- WFUGQJXVXHBTEM-UHFFFAOYSA-N 2-hydroperoxy-2-(2-hydroperoxybutan-2-ylperoxy)butane Chemical compound CCC(C)(OO)OOC(C)(CC)OO WFUGQJXVXHBTEM-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 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
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 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
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000006082 mold release agent Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- IYZPIFPRGKIJQT-UHFFFAOYSA-N tert-butyl propan-2-yl carbonate Chemical compound CC(C)OC(=O)OC(C)(C)C IYZPIFPRGKIJQT-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Macromonomer-Based Addition Polymer (AREA)
Description
〔技術分野〕
本発明は、電子レンジ用食器に最適な成形品が
得られる電子レンジ用不飽和ポリエステル樹脂成
形材料に関するものである。
〔背景技術〕
従来、食器用成形材料としてはメラミン樹脂成
形材料、次いで不飽和ポリエステル樹脂成形材料
が広く用いられているが、これらの食器を電子レ
ンジ、電子オープンで使用すると約240℃という
成形材料の耐熱温度を上回る急激な温度上昇があ
り、食器にクラツク、フクレ、臭気が発生し樹脂
製食器の用途を大幅に制限するものであつた。
〔発明の目的〕
本発明の目的とするところは、約240℃の電子
レンジでの使用に耐えるクツクウエアー、樹脂製
食器が得られる電子レンジ用不飽和ポリエステル
樹脂成形材料を提供することにある。
〔発明の開示〕
本発明は水添ビスフエノール系不飽和ポリエス
テル樹脂、スチレンモノマー、tert−ブチルパー
オキシイソプロピルカーボネート、ポリメチルメ
タアクリレート、ガラス繊維、硫酸バリウム、酸
化チタン及び必要に応じてアルミナを含有したこ
とを特徴とする電子レンジ用不飽和ポリエステル
樹脂成形材料のため、成形品を電子レンジで使用
してもクラツク、フクレ、臭気を発生することが
なくなつたもので、以下本発明を詳細に説明す
る。
本発明に用いる水添ビスフエノール系不飽和ポ
リエステル樹脂は、常温で液状又は固体の何れで
もよく、水添ビスフエノール系不飽和ポリエステ
ル樹脂を用いることが電子レンジ加熱時の温度上
昇を抑制することができ、耐熱性を向上させるこ
とができる。水添ビスフエノール系不飽和ポリエ
ステル樹脂の量としては、スチレンモノマーを15
〜50重量％（以下単に％と記す）含有した状態
で、全量の10〜35％であることが好ましい。硬化
開始剤としてはtert−ブチルパーオキシイソプロ
ピルカーボネートであることが必要である。従
来、不飽和ポリエステル樹脂に用いられているベ
ンゾイルパーオキサイド、メチルエチルケトンパ
ーオキサイド、ジクミルパーオキサイド等の硬化
開始剤では電子レンジ使用時に臭気発生があり本
発明では用いられない。tert−ブチルパーオキシ
イソプロピルカーボネートの量は全量の0.1〜２
％である。低収縮剤としては変色、褪色の少ない
ポリメチルメタアクリレートを用いる。ポリメチ
ルメタアクリレートの量は全量の１〜20％であ
る。即ち１％未満では寸法安定性が低下する傾向
にあり、20％をこえると耐熱性が低下する傾向に
ある。充填剤としては硫酸バリウム、酸化チタン
及び必要に応じてアルミナを添加した混合物を充
填剤として用いることが耐熱性、耐煮沸性、耐酸
性、耐食品性でよい。従来用いられている炭酸カ
ルシウム充填剤では耐煮沸性、耐酸性、耐食品
性、耐熱変色性がやや劣り、又、水酸化アルミニ
ウム充填剤、カオリン充填剤、ケイ酸カルシウム
充填剤では耐熱性、耐熱変色性がやや劣り、更に
ケイ酸マグネシウム充填剤は耐煮沸性がやや劣
る。充填剤の量は全量の20〜75％である。即ち20
％未満では耐熱性が低下する傾向にあり、75％を
こえると耐煮沸性が低下する傾向にあるからであ
る。充填剤中の酸化チタンの量は全量の１〜20％
であることが好ましい。補強剤としては全量の５
〜30％のガラス繊維を用いる。即ち５％未満では
機械的強度が低下する傾向にあり、30％をこえる
と耐煮沸性が低下する傾向にあるからである。離
型剤、着色剤については通常用いるものをそのま
ま用いることができ特に限定するものではなく、
更に必要に応じてカツプリング剤等を添加してガ
ラス繊維と樹脂との親和性を向上せしめることも
できるものである。上記材料を混合、混練後、ロ
ープ状、粒状、粉末状となし電子レンジ用不飽和
ポリエステル樹脂成形材料を得るものである。
以下本発明を実施例にせとづいて説明する。
実施例１乃至３及び比較例１乃至３
第１表の配合表にもとづいて材料を配合、混
合、混練後粒状の電子レンジ用不飽和ポリエステ
ル樹脂成形材料を得た。
[Technical Field] The present invention relates to an unsaturated polyester resin molding material for microwave ovens from which molded products optimal for microwave tableware can be obtained. [Background technology] Conventionally, melamine resin molding materials, followed by unsaturated polyester resin molding materials, have been widely used as molding materials for tableware, but when these tableware are used in a microwave oven or microwave oven, the temperature of the molding material is approximately 240℃. There was a sudden temperature rise that exceeded the heat resistance temperature of resin tableware, causing cracks, blisters, and odors in the tableware, which greatly limited the uses of resin tableware. [Object of the Invention] An object of the present invention is to provide an unsaturated polyester resin molding material for microwave ovens, which allows for the production of shoeware and resin tableware that can withstand use in a microwave oven at about 240°C. [Disclosure of the Invention] The present invention contains a hydrogenated bisphenolic unsaturated polyester resin, a styrene monomer, tert-butylperoxyisopropyl carbonate, polymethyl methacrylate, glass fiber, barium sulfate, titanium oxide, and optionally alumina. This is an unsaturated polyester resin molding material for microwave ovens, which is characterized by the fact that it does not cause cracks, blisters, or odors even when the molded product is used in a microwave oven.The present invention will be described in detail below. explain. The hydrogenated bisphenol-based unsaturated polyester resin used in the present invention may be either liquid or solid at room temperature, and using the hydrogenated bisphenol-based unsaturated polyester resin can suppress the temperature rise during heating in a microwave oven. It is possible to improve heat resistance. The amount of hydrogenated bisphenolic unsaturated polyester resin is 15% of the styrene monomer.
The content is preferably 10 to 35% of the total amount, with the content being 50% by weight (hereinafter simply referred to as %). The curing initiator must be tert-butylperoxyisopropyl carbonate. Curing initiators conventionally used for unsaturated polyester resins, such as benzoyl peroxide, methyl ethyl ketone peroxide, and dicumyl peroxide, generate odor when used in a microwave oven and cannot be used in the present invention. The amount of tert-butylperoxyisopropyl carbonate is 0.1 to 2 of the total amount.
%. As the low shrinkage agent, polymethyl methacrylate, which is less likely to discolor or fade, is used. The amount of polymethyl methacrylate is 1-20% of the total amount. That is, if it is less than 1%, dimensional stability tends to decrease, and if it exceeds 20%, heat resistance tends to decrease. As a filler, a mixture of barium sulfate, titanium oxide, and alumina added as necessary may be used as a filler, since it has heat resistance, boiling resistance, acid resistance, and food resistance. Conventionally used calcium carbonate fillers have somewhat poor boiling resistance, acid resistance, food resistance, and heat discoloration resistance, while aluminum hydroxide fillers, kaolin fillers, and calcium silicate fillers have poor heat resistance and heat resistance. The discoloration property is slightly inferior, and the magnesium silicate filler is also slightly inferior in boiling resistance. The amount of filler is 20-75% of the total amount. i.e. 20
This is because if it is less than 75%, the heat resistance tends to decrease, and if it exceeds 75%, the boiling resistance tends to decrease. The amount of titanium oxide in the filler is 1-20% of the total amount
It is preferable that As a reinforcing agent, 5 of the total amount
~30% glass fiber is used. That is, if it is less than 5%, mechanical strength tends to decrease, and if it exceeds 30%, boiling resistance tends to decrease. As for the mold release agent and coloring agent, those commonly used can be used as they are, and there are no particular limitations.
Furthermore, if necessary, a coupling agent or the like may be added to improve the affinity between the glass fiber and the resin. After mixing and kneading the above-mentioned materials, an unsaturated polyester resin molding material for use in a microwave oven is obtained in the form of a rope, granules, or powder. The present invention will be explained below based on examples. Examples 1 to 3 and Comparative Examples 1 to 3 Materials were blended, mixed and kneaded based on the formulation table in Table 1 to obtain granular unsaturated polyester resin molding materials for microwave ovens.
【表】【table】
【表】
配合材料として、ポリエステル樹脂はスチレン
モノマー35％含有の水添ビスフエノール系不飽和
ポリエステル樹脂（日本ユピカ株式会社製、品番
8560）をスチレンモノマーで希釈した不飽和ポリ
エステル樹脂を用い、メタアクリレートはポリメ
チルメタアクリレートを用い、TBIPCはtert−
ブチルイソプロピルカーボネートを用いた。次に
該成形材料を射出成形して食器成形品を得、該成
形品を食器用として試験した結果を第２表に示
す。[Table] As a compounding material, the polyester resin is a hydrogenated bisphenol-based unsaturated polyester resin containing 35% styrene monomer (manufactured by Nippon U-Pica Co., Ltd., product number
8560) diluted with styrene monomer, polymethyl methacrylate was used for methacrylate, and tert-
Butyl isopropyl carbonate was used. Next, the molding material was injection molded to obtain a tableware molded article, and the molded article was tested as a tableware, and the results are shown in Table 2.
第２表で明白なように、本発明の電子レンジ用
不飽和ポリエステル樹脂成形材料から得られた成
形品の性能はよく、本発明の電子レンジ用不飽和
ポリエステル樹脂成形材料の優れていることを確
認した。
As is clear from Table 2, the performance of the molded products obtained from the unsaturated polyester resin molding material for microwave ovens of the present invention is good, demonstrating the superiority of the unsaturated polyester resin molding material for microwave ovens of the present invention. confirmed.
Claims (1)
脂、スチレンモノマー、tert−ブチルパーオキシ
イソプロピルカーボネート、ポリメチルメタアク
リレート、ガラス繊維、硫酸バリウム、酸化チタ
ン及び必要に応じてアルミナを含有したことを特
徴とする電子レンジ用不飽和ポリエステル樹脂成
形材料。 ２ tert−ブチルパーオキシイソプロピルカーボ
ネートの量が全量の0.1〜２重量％であることを
特徴とする特許請求の範囲第１項記載の電子レン
ジ用不飽和ポリエステル樹脂成形材料。 ３ ポリメチルメタアクリレートの量が全量の１
〜20重量％であることを特徴とする特許請求の範
囲第１項記載の電子レンジ用不飽和ポリエステル
樹脂成形材料。 ４ 充填剤の量が全量の20〜75重量％であること
を特徴とする特許請求の範囲第１項記載の電子レ
ンジ用不飽和ポリエステル樹脂成形材料。[Claims] 1 Contains hydrogenated bisphenolic unsaturated polyester resin, styrene monomer, tert-butylperoxyisopropyl carbonate, polymethyl methacrylate, glass fiber, barium sulfate, titanium oxide, and alumina as necessary. An unsaturated polyester resin molding material for microwave ovens. 2. The unsaturated polyester resin molding material for microwave ovens according to claim 1, wherein the amount of tert-butylperoxyisopropyl carbonate is 0.1 to 2% by weight based on the total amount. 3 The amount of polymethyl methacrylate is 1 of the total amount
The unsaturated polyester resin molding material for microwave ovens according to claim 1, characterized in that the amount is 20% by weight. 4. The unsaturated polyester resin molding material for microwave ovens according to claim 1, wherein the amount of filler is 20 to 75% by weight of the total amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21467586A JPS6369812A (en) | 1986-09-11 | 1986-09-11 | Unsaturated polyester resin molding material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21467586A JPS6369812A (en) | 1986-09-11 | 1986-09-11 | Unsaturated polyester resin molding material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6369812A JPS6369812A (en) | 1988-03-29 |
| JPH0468325B2 true JPH0468325B2 (en) | 1992-11-02 |
Family
ID=16659714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21467586A Granted JPS6369812A (en) | 1986-09-11 | 1986-09-11 | Unsaturated polyester resin molding material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6369812A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5869557A (en) * | 1995-06-30 | 1999-02-09 | Atohaas Holding C.V. | Moldable and pigmentable heat-curable compositions capable of being used for obtaining molded articles with zero shrinkage or small expansion |
| FR2736058B1 (en) * | 1995-06-30 | 1997-08-01 | Atohaas Holding Cv | MOLDABLE AND PIGMENTABLE THERMOSETTING COMPOSITIONS USEFUL FOR OBTAINING MOLDED ARTICLES WITH ZERO OR LOW EXPANSION WITHDRAWAL |
| FR2738572B1 (en) * | 1995-09-11 | 1997-11-28 | Manducher Sa | THERMOSETTING MATERIAL FOR PRODUCING WORKPIECES HAVING A LONG ROUTE |
| JP3919894B2 (en) * | 1997-09-18 | 2007-05-30 | ジャパンコンポジット株式会社 | Unsaturated polyester resin composition |
| JP5042922B2 (en) * | 2008-05-27 | 2012-10-03 | 京セラケミカル株式会社 | Thermosetting molding material and molded body |
-
1986
- 1986-09-11 JP JP21467586A patent/JPS6369812A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6369812A (en) | 1988-03-29 |
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