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.
Abstract:
A polyphenylene sulfide resin composition has excellent heat resistance, flowability and lightweight property as well as surface smoothness and impact resistance. The polyphenylene sulfide resin composition includes 1 to 30 parts by weight of a mica (b) having an aspect ratio of not less than 80, relative to 100 parts by weight of a polyphenylene sulfide resin (a).
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.
Abstract:
A molded product made from a resin composition includes a polyamide resin and has a thickness of not less than 0.56 mm. A difference (Q−P) between Q and P is less than 0.06, where P (A1680/A1632) denotes an intensity ratio of a maximum value of absorbance A1680 at 1680 cm−1±8 cm−1 to a maximum value of absorbance A1632 at 1632 cm−1±8 cm−1 with an absorbance at 1800 cm−1 being set to 0 with regard to an infrared absorption spectrum of a cutting surface at a depth of 0.28 mm from a surface of the molded product, and Q (A′1680/A′1632) denotes an intensity ratio of a maximum value of absorbance A′1680 at 1680 cm−1±8 cm−1 to a maximum value of absorbance A′1632 at 1632 cm−1±8 cm−1 with an absorbance at 1800 cm−1 being set to 0.
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:
A polyamide resin composition makes it possible to obtain a molded article having excellent fluidity, excellent prying strength, and excellent adhesivity with metal. The polyamide resin composition includes 100 parts by mass of a polyamide resin (A) and 0.1 part by mass or more and 10 parts by mass or less of an ammonium salt (B) composed of a C6-12 aliphatic dicarboxylic acid and ammonia.
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:
Abstract:
A polyamide resin composition makes it possible to obtain a molded article having excellent fluidity, excellent prying strength, and excellent adhesivity with metal. The polyamide resin composition includes 100 parts by mass of a polyamide resin (A) and 0.1 part by mass or more and 10 parts by mass or less of an ammonium salt (B) composed of a C6-12 aliphatic dicarboxylic acid and ammonia.
Abstract:
A polyamide resin composition includes 100 parts by weight of a polyamide resin (A), 0.1 to 50 parts by weight of a fire retardant (B), 0.001 to 1 part by weight of a metal and/or salt thereof (C), and 0.001 to 1 part by weight of a compound (D) as represented by formula [I]: QX [I] wherein in formula [I], Q represents an aromatic hydrocarbon group or an alicyclic hydrocarbon group and X represents a 5-membered heterocyclic ring group, Q and X forming a covalent bond or a fused ring.
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.