Polypropylene compositions
US4259230A · kind A · utility
7Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1979 |
| Grant date | Mar 31, 1981 |
| Priority date | — |
| Expiry date | Sep 26, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S260/24
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polypropylene compositions having high ignition resistance, flex modulus, and impact resistance are obtained by blending polypropylene homopolymer, a propylene/ethylene copolymer, an EPM or EPDM elastomer having an ethylene content of about 50-65 weight percent and a Mooney viscosity of 35-80, mica, a commercial chlorinated fire retardant, and antimony trioxide in defined proportions. These compositions are particularly suitable for electrical wire insulation and other applications where toughness, stiffness, and ignition resistance are important.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.