Invention Grant
- Patent Title: Polypropylene-type resin pre-expanded particles, and method for producing said pre-expanded particles
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Application No.: US16251238Application Date: 2019-01-18
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Publication No.: US10941265B2Publication Date: 2021-03-09
- Inventor: Ryoji Nakayama , Ryuta Kutsumizu
- Applicant: KANEKA CORPORATION
- Applicant Address: JP Osaka
- Assignee: KANEKA CORPORATION
- Current Assignee: KANEKA CORPORATION
- Current Assignee Address: JP Osaka
- Agency: Osha Bergman Watanabe & Burton LLP
- Priority: JPJP2016-141054 20160719
- Main IPC: C08J9/18
- IPC: C08J9/18 ; C08F10/06 ; C08J9/16 ; C08J3/24 ; B29C44/00 ; B29C67/20 ; C08L23/10
Abstract:
Pre-expanded polypropylene-based resin particles include a polypropylene-based resin. The polypropylene-based resin satisfies tan δ≤0.32×V+0.1, where tan δ represents a loss tangent at an angular frequency of 0.1 rad/s in dynamic viscoelastic behavior measurement at 200° C. and V represents a melt fracture take-up speed (m/min) at 200° C.
Public/Granted literature
- US20190153188A1 POLYPROPYLENE-TYPE RESIN PRE-EXPANDED PARTICLES, AND METHOD FOR PRODUCING SAID PRE-EXPANDED PARTICLES Public/Granted day:2019-05-23
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