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公开(公告)号：US20240026151A1
公开(公告)日：2024-01-25
申请号：US17768811
申请日：2020-10-12
Applicant: UNITIKA LTD.
Inventor： Yutaka NABESHIMA
CPC classification number: C08L69/00 , C08K3/36 , C08K3/041 , C08K2201/005 , C08K2201/003
Abstract: The present invention provides a resin composition, from which a molded product excellent in a dust-generating resistance property, heat-resisting properties, a dimensional stability, sliding properties, mechanical properties and external appearance properties can be molded and which is excellent in a molding stability, and a molded product which is obtained by molding the same. The present invention relates to a resin composition comprising a polyarylate resin, a polycarbonate resin, silica particles having an average particle diameter of 0.4 to 12 μm, fluorine atom-containing polymer particles having an average particle diameter of 0.5 to 20 μm, and a particular phosphite ester compound, wherein a mass ratio of the polyarylate resin and the polycarbonate resin is 25/75 to 92/8, a content of the silica particles is 4 to 65 parts by mass with respect to 100 parts by mass of a total amount of the polyarylate resin and the polycarbonate resin, a content of the fluorine atom-containing polymer particles is 0.5 to 12 parts by mass with respect to 100 parts by mass of a total amount of the polyarylate resin and the polycarbonate resin, and a content of the phosphite ester compound is 0.008 to 1.2 parts by mass with respect to 100 parts by mass of a total amount of the polyarylate resin and the polycarbonate resin.
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公开(公告)号：US20200317911A1
公开(公告)日：2020-10-08
申请号：US16303911
申请日：2017-05-18
Applicant: UNITIKA LTD.
Inventor： Yutaka NABESHIMA
Abstract: The present invention provides a resin composition excellent in a molding stability, which can be molded into a molded article excellent in a dust generation resistance, a heat resistance, a dimensional stability, and an external appearance, and a molded article obtained by molding the same. The present invention relates to a resin composition comprising a polyarylate resin, a polycarbonate resin, silica particles having an average particle diameter of 0.5 to 10 μm and a phosphite ester compound shown by a general formula (I), wherein a mass ratio of the polyarylate resin and the polycarbonate resin is 25/75 to 90/10, a content of the silica particles is 5 to 60 parts by mass with respect to 100 parts by mass of a total amount of the polyarylate resin and the polycarbonate resin and a content of the phosphite ester compound is 0.01 to 1 part by mass with respect to 100 parts by mass of a total amount of the polyarylate resin and the polycarbonate resin: (wherein m1 and m2 respectively and independently are an integer of 0 to 5; R1 and R2 respectively and independently represent an alkyl group having 1 to 12 carbon atoms, which may have a substituent group; four R3s respectively and independently represent an alkylene group having 1 to 5 carbon atoms).
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公开(公告)号：US20210253848A1
公开(公告)日：2021-08-19
申请号：US17051943
申请日：2020-04-21
Applicant: UNITIKA LTD.
Inventor： Yutaka NABESHIMA
Abstract: The present invention is to provide a resin composition capable of producing a molded product sufficiently excellent in hydrolysis resistance and mold release characteristics and having an excellent balance between heat resistance and fluidity, even if a heat stabilizer and a mold release agent are contained.
The present invention relates to a resin composition, comprising: (A) a polyarylate resin; (B) a melt-polymerized polycarbonate resin; (C) a specific phosphite compound; and (D) a dipentaerythritol fatty acid ester, a mass ratio (A/B) of the (A) polyarylate resin and the (B) melt-polymerized polycarbonate resin being from 2/98 to 98/2, and the resin composition having a Vicat softening point of 140° C. or higher
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