- Patent Title: Propylene resin composition and injection-molded article thereof
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Application No.: US16307815Application Date: 2017-06-06
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Publication No.: US10907035B2Publication Date: 2021-02-02
- Inventor: Hiroshi Fukuroda , Toshiya Maruyama
- Applicant: Sumitomo Chemical Company, Limited
- Applicant Address: JP Tokyo
- Assignee: Sumitomo Chemical Company, Limited
- Current Assignee: Sumitomo Chemical Company, Limited
- Current Assignee Address: JP Tokyo
- Agency: Panitch Schwarze Belisario & Nadel LLP
- Priority: JP2016-113281 20160607
- International Application: PCT/JP2017/020953 WO 20170606
- International Announcement: WO2017/213126 WO 20171214
- Main IPC: C08L23/12
- IPC: C08L23/12 ; B29C45/00 ; C08K3/34 ; C08K5/1575 ; C08L23/08 ; C08K7/00 ; B29K23/00

Abstract:
A propylene resin composition containing (A), (B), (C), and (D) is provided. The content of (A) is 40 to 65 parts by weight, the content of (B) is 10 to 25 parts by weight, the content of (C) is 25 to 35 parts by weight, and the content of (D) is 0.01 to 0.3 parts by weight based on the total weight of (A), (B), and (C) being 100 parts by weight. (A) is a propylene-based polymer, (B) is an ethylene-α-olefin copolymer, (C) is a talc whose ratio of D50[L] to D50[S] is at least 4, and (D) is a nucleating agent having formula (1): R1 and R2 each independently represent an alkyl group having 1 to 8 carbon atoms or a halogen group, and m and n each independently represent an integer of 1 to 5. A molded article produced from the composition has low linear expansion coefficients.
Public/Granted literature
- US20190264016A1 PROPYLENE RESIN COMPOSITION AND INJECTION-MOLDED ARTICLE THEREOF Public/Granted day:2019-08-29
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