Resin composition, method of making it and electrical wire covered with it
US6475628B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 29, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Jan 29, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The resin composition contains (a) 30-80 parts by weight of a polyolefin thermoplastic elastomer, (b) 1-2 parts by weight of a polypropylene modified with 0.1-10% by weight of an acid anhydride, (c) 5-50 parts by weight of a styrene-based polymeric elastomer, and (d) 10-30 parts by weight of a propylene polymer having a melt flow rate of 0.1-5 g/10 min, the total of the components (a), (b), (c) and (d) being 100 parts by weight, and (e) 30-200 parts by weight of a metal hydroxide. Optionally a silicone oil is included. This halogen-free olefin-based resin composition has a good balance of properties such as wear resistance, flame resistance, tensile property and flexibility, which are required for the covering material of an electrical wire for an automobile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.