Olefin-based resin composition
US6414068B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 16, 2001 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Jan 16, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2201/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is provided an olefin-based resin composition which may be applied to the coatings of electrical cables used in automobiles. The coatings have neatly balanced properties to satisfy product requirements, such as wear and flame resistance, tensile strength, flexibility, and heat and freeze resistance. The olefin-based resin composition includes: (i) polymeric material in an amount of 100 parts by weight which includes: (a) about 30 to 94 parts by weight of propylene polymer portion including at least one propylene polymer having a melt flow rate of up to about 5 g/10 min; (b) about 1 to 20 parts by weight of at least one polyolefin, a proportion of about 0.1 to 10% by weight of which is structurally modified through maleic acid anhydride treatment, so that the at least one polyolefin has a Shore D hardness of at least about 50; and (c) about 5 to 50 parts by weight of at least one olefin-based polymer, a proportion of about 0.1 to 10% by weight of which is structurally modified through maleic acid anhydride treatment, so that the at least one olefin-based polymer has a Shore A hardness of up to about 95; and (ii) about 30 to 200 parts by weight of at least one metal hydroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.