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JPS6226329B2 - - Google Patents
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JPS6226329B2 - - Google Patents

Info

Publication number
JPS6226329B2
JPS6226329B2 JP8792878A JP8792878A JPS6226329B2 JP S6226329 B2 JPS6226329 B2 JP S6226329B2 JP 8792878 A JP8792878 A JP 8792878A JP 8792878 A JP8792878 A JP 8792878A JP S6226329 B2 JPS6226329 B2 JP S6226329B2
Authority
JP
Japan
Prior art keywords
acid
composition
unsaturated polyester
parts
mol
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
Application number
JP8792878A
Other languages
Japanese (ja)
Other versions
JPS5516012A (en
Inventor
Kanemasa Nomaguchi
Yukushi Arakawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Resonac Corp
Original Assignee
Hitachi Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Chemical Co Ltd filed Critical Hitachi Chemical Co Ltd
Priority to JP8792878A priority Critical patent/JPS5516012A/en
Publication of JPS5516012A publication Critical patent/JPS5516012A/en
Publication of JPS6226329B2 publication Critical patent/JPS6226329B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Polyesters Or Polycarbonates (AREA)

Description

【発明の詳細な説明】 本発明は熱硬化性樹脂組成物に関し、その目的
とするところは、貯蔵安定性のよい優れた硬化樹
脂特性を有する新規な熱硬化性樹脂組成物を提供
することにある。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thermosetting resin composition, and an object thereof is to provide a novel thermosetting resin composition having excellent storage stability and excellent cured resin properties. be.

不飽和ポリエステル樹脂すなわち、不飽和ポリ
エステルと架橋性単量体との混合物は、有機過酸
化物などの重合開始剤を用い、常温あるいは加熱
により硬化させ、今日、多種多様な用途で用いら
れている。しかし、このような、不飽和ポリエス
テル樹脂は、架橋性単量体を含むため、貯蔵安定
性に限度があり、常温下では、通常3〜12ケ月程
度とみられる。
Unsaturated polyester resins, that is, mixtures of unsaturated polyesters and crosslinkable monomers, are cured at room temperature or by heating using polymerization initiators such as organic peroxides, and are used in a wide variety of applications today. . However, since such unsaturated polyester resins contain crosslinkable monomers, their storage stability is limited, and is generally estimated to last about 3 to 12 months at room temperature.

本発明は、従来の不飽和ポリエステル樹脂の架
橋性単量体を全く廃し、いわゆる不飽和ポリエス
テルと有機過酸化物からなる組成物の一連の研究
中に見出した現象の利用である。
The present invention completely eliminates the crosslinking monomer of conventional unsaturated polyester resins and makes use of a phenomenon discovered during a series of studies on compositions consisting of so-called unsaturated polyesters and organic peroxides.

すなわち、本発明は、(a)3・6−エンドメチレ
ンテトラヒドロフタル酸で変性した不飽和ポリエ
ステル85〜99重量部および(b)二つの過酸化物基を
有する有機過酸化物15〜1重量部からなる熱硬化
性樹脂組成物に関し、上記の(a)は、通常の不飽和
ポリエステルすなわち、不飽和酸、飽和酸および
多価アルコールの脱水縮合反応で得られる一般に
酸価100〜0の液状〜固形状のポリエステルであ
り、その飽和酸成分の一つとして、3・6−エン
ドメチレンテトラヒドロフタル酸を用いることが
必要である。不飽和酸/飽和酸のモル比は1.00/
9.00〜9.00/1.00が好ましく、飽和酸中の3・6
−エンドメチレンテトラヒドロフタル酸の比率は
30〜70%が好ましい。また、全酸の酸基/多価ア
ルコールのヒドロキシル基の比も特に限定しない
が、1.10/0.90〜0.90/1.10程度で良い。
That is, the present invention comprises (a) 85 to 99 parts by weight of an unsaturated polyester modified with 3,6-endomethylenetetrahydrophthalic acid and (b) 15 to 1 part by weight of an organic peroxide having two peroxide groups. Regarding the thermosetting resin composition, the above-mentioned (a) is a general unsaturated polyester, that is, a liquid with an acid value of 100 to 0 obtained by a dehydration condensation reaction of an unsaturated acid, a saturated acid, and a polyhydric alcohol. It is a solid polyester, and it is necessary to use 3,6-endomethylenetetrahydrophthalic acid as one of its saturated acid components. The molar ratio of unsaturated acid/saturated acid is 1.00/
9.00-9.00/1.00 is preferable, 3.6 in saturated acid
-The ratio of endomethylenetetrahydrophthalic acid is
30-70% is preferred. Further, the ratio of acid groups of all acids/hydroxyl groups of polyhydric alcohol is not particularly limited, but may be about 1.10/0.90 to 0.90/1.10.

また、上記の(b)は、二つの過酸化物基を有する
有機過酸化物であるが、通常、常温以上で安定な
ものであり、100〜200℃で分解するものが特に好
ましい。2・5ジメチル−2・5−ジ(t−ブチ
ルパーオキシ)ヘキサン、2・5ジメチル−2・
5−ジ(t−ブチルパーオキシ)ヘキシン、ジ−
t−ブチルパーオキシ−3・3・5−トリメチル
シクロヘキサン、α・α′−ジ−tブチルパーオ
キシジp−ジイソプロピルベンゼン等が使用され
る。
Further, the above (b) is an organic peroxide having two peroxide groups, and is usually stable at room temperature or above, and one that decomposes at 100 to 200°C is particularly preferable. 2,5 dimethyl-2,5-di(t-butylperoxy)hexane, 2,5 dimethyl-2,
5-di(t-butylperoxy)hexyne, di-
Used are t-butylperoxy-3,3,5-trimethylcyclohexane, α,α'-di-t-butylperoxydi-p-diisopropylbenzene, and the like.

これら(a)/(b)の配合比は、85/15〜99/1(重
量比)で良く、また、加熱硬化温度は100〜230℃
の範囲が好ましい。
The blending ratio of (a)/(b) may be 85/15 to 99/1 (weight ratio), and the heat curing temperature is 100 to 230℃.
A range of is preferred.

本発明の応用にあたつては、本発明の組成物に
補強基材、充填剤、顔料など、今日不飽和ポリエ
ステル樹脂の利用で用いられている材料(架橋性
単量体を除く)を自由に用いることができる。
In the application of the present invention, the composition of the present invention may contain any materials currently used in the use of unsaturated polyester resins (excluding crosslinkable monomers), such as reinforcing base materials, fillers, and pigments. It can be used for.

以下本発明を実施例により説明する。部とある
のは重量部である。
The present invention will be explained below with reference to Examples. Parts are by weight.

実施例 1 無水マレイン酸0.50モル、3・6−エンドメチ
レンテトラヒドロ無水フタル酸0.50モル、プロピ
レングリコール1.05モルを窒素ガス気流中にて、
210℃に加熱、縮合せしめてえられた酸価20の不
飽和ポリエステル95部と、2・5ジメチル−2・
5−ジ(t−ブチルパーオキシ)ヘキサン(日本
油脂社製商品名パーヘキサ25B)5部とを相溶さ
せ、組成物Aとした。
Example 1 0.50 mol of maleic anhydride, 0.50 mol of 3,6-endomethylenetetrahydrophthalic anhydride, and 1.05 mol of propylene glycol in a nitrogen gas stream,
95 parts of unsaturated polyester with an acid value of 20 obtained by heating and condensation at 210°C and 2.5 dimethyl-2.
Composition A was prepared by dissolving the mixture with 5 parts of 5-di(t-butylperoxy)hexane (trade name: Perhexa 25B, manufactured by NOF Corporation).

組成物Aを50g、溶量100mlのガラスビーカに
とり220℃の油槽に入れたところ、5.5分でゲル化
開始、約10分で完全に硬化した。
When 50 g of Composition A was placed in a 220° C. oil bath in a glass beaker containing 50 g of composition A, gelation started in 5.5 minutes and completely hardened in about 10 minutes.

比較例 無水マレイン酸0.50モル、無水フタル酸0.50モ
ル、プロピレングリコール1.05モルを窒素ガス気
流中で210℃に加熱、縮合させて得られた酸価22
の不飽和ポリエステル95部と2・5−ジメチル−
2・5−ジ(t−ブチルパーオキシ)ヘキサン
(商品名パーヘキサ25B)5部を相溶させ、組成
物A′とした。これを直径16mmの試験管に10gと
り、160℃で20分間加熱した。
Comparative example Acid value 22 obtained by heating and condensing 0.50 mol of maleic anhydride, 0.50 mol of phthalic anhydride, and 1.05 mol of propylene glycol at 210°C in a nitrogen gas stream.
95 parts of unsaturated polyester and 2,5-dimethyl-
5 parts of 2,5-di(t-butylperoxy)hexane (trade name: Perhexa 25B) were dissolved to form a composition A'. 10g of this was placed in a 16mm diameter test tube and heated at 160°C for 20 minutes.

冷却後、アセトンを20g加え試験管の内容を溶
解させた。約1gのゲル分を残して溶解した。
After cooling, 20 g of acetone was added to dissolve the contents of the test tube. It was dissolved leaving about 1 g of gel.

実施例 2 前記実施例1の組成物Aを10×10×120mmの棒
状に金型中で注型成形した。
Example 2 Composition A of Example 1 was cast into a rod shape of 10 x 10 x 120 mm in a mold.

硬化は、180℃20分行なわしめたところ、硬化
樹脂の物性は、曲げ強さ10.1Kg/mm2熱変形温度
150℃とすぐれた耐熱性を示した。
Curing was performed at 180℃ for 20 minutes, and the physical properties of the cured resin were: bending strength: 10.1Kg/mm 2 heat distortion temperature
It showed excellent heat resistance of 150℃.

なお、組成物Aを常温で保管して3ケ月間、ほ
とんど安定性をそこなうことなく、40℃〜50℃の
雰囲気の貯蔵でも安定性は3ケ月以上十分あり、
6〜12ケ月以上も十分見込みがあるものとみられ
る。
In addition, Composition A can be stored at room temperature for 3 months with almost no loss in stability, and even when stored in an atmosphere of 40°C to 50°C, it is sufficiently stable for more than 3 months.
It seems that there is a good chance that it will continue for 6 to 12 months or more.

実施例 3 フマル酸0.40モル、3・6−エンドメチレンテ
トラヒドロフタル酸(日立化成工業社製商品名ハ
イミツク酸)0.60モル、エチレングリコール1.05
モルを窒素ガス気流中にて、220℃に加熱、縮合
せしめてえられた酸価25の不飽和ポリエステル90
部と、2・5ジメチル−2・5−ジ(t−ブチル
パーオキシ)ヘキシン(日本油脂社製商品名パー
ヘキシン25B)10部とを相溶させ、組成物Bとし
た。
Example 3 0.40 mol of fumaric acid, 0.60 mol of 3,6-endomethylenetetrahydrophthalic acid (trade name: Himic acid, manufactured by Hitachi Chemical Co., Ltd.), 1.05 mol of ethylene glycol
Unsaturated polyester 90 with an acid value of 25 obtained by heating and condensing moles at 220°C in a nitrogen gas stream.
Composition B was obtained by dissolving 10 parts of 2,5 dimethyl-2,5-di(t-butylperoxy)hexyne (trade name: Perhexine 25B, manufactured by NOF Corporation).

組成物Bの硬化樹脂(220℃20分硬化物)の物
性測定例を挙げると、熱変形温度165℃、曲げ強
さ11.5Kg/mm2であり、また組成物Bの45℃貯蔵安
定中、3.5ケ月の間ゲル化することなく、一定の
応用物性が得られた。
To give an example of measuring the physical properties of the cured resin of Composition B (cured product at 220°C for 20 minutes), the heat distortion temperature is 165°C, the bending strength is 11.5Kg/ mm2 , and the composition B is stable during storage at 45°C. Certain applied physical properties were obtained without gelation for 3.5 months.

本発明によれば、架橋性単量体を用いることな
く、貯蔵安定性のすぐれた、硬化樹脂物性とくに
熱変形温度の高い、熱硬化性樹脂組成物が得られ
る。
According to the present invention, a thermosetting resin composition with excellent storage stability and cured resin physical properties, particularly a high heat distortion temperature, can be obtained without using a crosslinkable monomer.

Claims (1)

【特許請求の範囲】 1 (a) 3・6−エンドメチレンテトラヒドロフ
タル酸で変性した不飽和ポリエステル85〜99重
量部および (b) 二つの過酸化物基を有する有機過酸化物15〜
1重量部からなる熱硬化性樹脂組成物。
[Scope of Claims] 1 (a) 85 to 99 parts by weight of an unsaturated polyester modified with 3,6-endomethylenetetrahydrophthalic acid and (b) 15 to 99 parts by weight of an organic peroxide having two peroxide groups
A thermosetting resin composition consisting of 1 part by weight.
JP8792878A 1978-07-19 1978-07-19 Thermosetting resin composition Granted JPS5516012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8792878A JPS5516012A (en) 1978-07-19 1978-07-19 Thermosetting resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8792878A JPS5516012A (en) 1978-07-19 1978-07-19 Thermosetting resin composition

Publications (2)

Publication Number Publication Date
JPS5516012A JPS5516012A (en) 1980-02-04
JPS6226329B2 true JPS6226329B2 (en) 1987-06-08

Family

ID=13928569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8792878A Granted JPS5516012A (en) 1978-07-19 1978-07-19 Thermosetting resin composition

Country Status (1)

Country Link
JP (1) JPS5516012A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH088693Y2 (en) * 1991-02-25 1996-03-13 シンコハンガー株式会社 Hanger

Also Published As

Publication number Publication date
JPS5516012A (en) 1980-02-04

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