Thermoplastic polyester resin composition and molded article

    公开(公告)号:US11319437B2

    公开(公告)日:2022-05-03

    申请号:US16492784

    申请日:2018-04-02

    Abstract: A thermoplastic polyester resin composition includes 0.05 to 10 parts by weight of an epoxy compound (B) and 0.001 to 1 part by weight of a hindered amine compound (C) with respect to 100 parts by weight of a thermoplastic polyester resin (A) having an amount of carboxyl groups of 50 eq/t or less. The thermoplastic polyester resin composition is capable of producing a molded article which is excellent in mechanical properties and heat resistance, as well as in long-term hydrolysis resistance, and has a small decrease in mechanical properties and hydrolysis resistance even when melt-processed at a high temperature of 270° C. or more.

    THERMOPLASTIC POLYESTER RESIN COMPOSITION AND MOLDED ARTICLE

    公开(公告)号:US20200071516A1

    公开(公告)日:2020-03-05

    申请号:US16492784

    申请日:2018-04-02

    Abstract: A thermoplastic polyester resin composition includes 0.05 to 10 parts by weight of an epoxy compound (B) and 0.001 to 1 part by weight of a hindered amine compound (C) with respect to 100 parts by weight of a thermoplastic polyester resin (A) having an amount of carboxyl groups of 50 eq/t or less. The thermoplastic polyester resin composition is capable of producing a molded article which is excellent in mechanical properties and heat resistance, as well as in long-term hydrolysis resistance, and has a small decrease in mechanical properties and hydrolysis resistance even when melt-processed at a high temperature of 270° C. or more.

    POLYAMIDE RESIN COMPOSITION, METHOD OF MANUFACTURING AND MOLDED PRODUCT
    5.
    发明申请
    POLYAMIDE RESIN COMPOSITION, METHOD OF MANUFACTURING AND MOLDED PRODUCT 有权
    聚酰胺树脂组合物,制造方法和成型产品

    公开(公告)号:US20160264778A1

    公开(公告)日:2016-09-15

    申请号:US15029366

    申请日:2014-08-28

    Abstract: A polyamide resin composition has excellent heat aging resistance, surface appearance, retention stability, dimensional accuracy, chemical resistance and the like. One polyamide resin composition includes a specified amount of a compound and/or its condensate that includes a hydroxyl group and an epoxy group or a carbodiimide group and has a specific structure. Another polyamide resin composition includes specified amounts of an aliphatic compound having three or more amino groups or three or more hydroxyl groups per molecule and a compound having more than one functional group per molecule that is reactive with the amino group or the hydroxyl group, wherein, when an ASTM No. 1 dumbbell of 3.2 mm in thickness produced by injection molding of the polyamide resin composition is processed by heat treatment at 130° C. for 100 hours, an increase rate in concentration of a carboxyl group in the polyamide resin composition from a surface of the molded product to a depth of 0.2 mm after the heat treatment is lower than 70%.

    Abstract translation: 聚酰胺树脂组合物具有优异的耐热老化性,表面外观,保持稳定性,尺寸精度,耐化学性等。 一种聚酰胺树脂组合物包含指定量的包含羟基和环氧基的化合物和/或其缩合物或碳二亚胺基并具有特定结构。 另外,聚酰胺树脂组合物含有规定量的每分子具有3个以上氨基或3个以上羟基的脂肪族化合物,每分子具有多于1个与氨基或羟基反应的官能团的化合物, 当通过聚酰胺树脂组合物的注射成型生产的厚度为3.2mm的ASTM No.1哑铃通过130℃热处理100小时,聚酰胺树脂组合物中羧基浓度的增加率从 热处理后的成型品的深度为0.2mm的面低于70%。

    LIQUID CRYSTAL POLYESTER RESIN, LIQUID CRYSTAL POLYESTER RESIN COMPOSITION, FORMED PRODUCT, LAYERED BODY AND LIQUID CRYSTAL POLYESTER RESIN FILM, AND PRODUCTION METHOD THEREFOR

    公开(公告)号:US20230065239A1

    公开(公告)日:2023-03-02

    申请号:US17789588

    申请日:2020-12-21

    Abstract: A liquid crystal polyester resin comprising 42 to 80 mol % of structural unit (I) relative to 100 mol % of the total structural unit of the liquid crystal polyester resin, and ΔS (entropy of melting) defined by equation [1] is 0.01×10−3 to 2.7×10−3 J/g·K: ΔS(J/g·K)=ΔHm(J/g)/Tm(K)  [1] wherein Tm is an endothermic peak temperature determined by: after observation of an endothermic peak temperature (Tm1) observed when heating a liquid crystal polyester under temperature rising conditions of 20° C./minute from room temperature in differential scanning calorimetry, the liquid crystal polyester was maintained at a temperature of Tm1+20° C. for 5 minutes, followed by observation of the endothermic peak temperature observed when the temperature has fallen to room temperature under temperature falling conditions of 20° C./minute and then raised under temperature rising conditions of 20° C./minute, and ΔHm is an endothermic peak area of Tm:

    THERMOPLASTIC POLYESTER RESIN COMPOSITION AND MOLDED ARTICLE

    公开(公告)号:US20190055398A1

    公开(公告)日:2019-02-21

    申请号:US16074482

    申请日:2017-01-19

    Abstract: A thermoplastic polyester resin composition is obtained by blending, per 100 parts by weight of (A) a thermoplastic polyester resin, 0.1 to 5 parts by weight of (B) a novolac type epoxy resin having a specific structure, and 0.05 to 10 parts by weight of (C) an epoxy compound having two epoxy functional groups per molecule. Thus, a molded article that exhibits superior melt stability with respect to a wide range of processing temperatures, has excellent mechanical properties and heat resistance, and exhibits superior long-term hydrolysis resistance, chemical resistance, and oxidative deterioration resistance can be obtained.

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