Invention Grant
- Patent Title: Propylene polymer composition
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Application No.: US15960777Application Date: 2018-04-24
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Publication No.: US10662322B2Publication Date: 2020-05-26
- Inventor: Kazuya Inoue
- 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: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@4ea109d3
- Main IPC: C08L23/12
- IPC: C08L23/12 ; C08L23/08 ; C08L23/16 ; C08K3/013 ; C08L53/00 ; C08L23/14

Abstract:
A propylene polymer composition contains the following components (A), (B), and (C) and satisfies the requirements (1) to (4): Component (A): a propylene polymer, Component (B): an elastomer, Component (C): a propylene block copolymer; Requirement (1): the propylene polymer composition has a melting point of 100° C. or more; Requirement (2): the propylene polymer composition has a limiting viscosity of 1.0 dl/g or more; Requirement (3): at least one of the number-average molecular weight of a component insoluble in p-xylene at 25° C. of the propylene polymer composition and the number-average molecular weight of a component insoluble in n-heptane at 25° C. of the propylene polymer composition is 80000 or more; and Requirement (4): the ratio of the polystyrene-equivalent number-average molecular weight of the component (A) to the polystyrene-equivalent number-average molecular weight of the component (B) is 1.0 or more and 20 or less.
Public/Granted literature
- US20180312675A1 PROPYLENE POLYMER COMPOSITION Public/Granted day:2018-11-01
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