Fiber-reinforced polymer composition
US5106893A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Feb 7, 1991 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Feb 7, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L77/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A fiber-reinforced polymer composition containing resin components including (a) 30-90 weight % of a polyamide resin, and (b) 10-70 weight % of polyolefin+unsaturated carboxylic acid-modified polyolefin, based on the resin components; and, per 100 parts by weight of the total components, (c) 5-50 parts by weight of glass fibers, and (d) additives including the following set of additives: 0.1-1 parts by weight of N,N'-hexamethylene-bis (3,5-di-tert-butyl-4-hydroxy-hydrocinnamide); 0.1-1 parts by weight of triethylene glycol-bis [3-(3-tert-butyl-5-methyl-4-hydroxyphenyl) propionate]; and 0.1-1 parts by weight of pentaerythrityl-tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate]. An alternative set of additives are 0.1-2 parts by weight of N,N'-bis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl] hydrazine; 0.05-0.5 parts by weight of pentaerythrityl-tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate]; 0.05-0.5 parts by weight of distearyl-pentaerythritol diphosphite; and 0.15-1 parts by weight of distearyl-3,3'-thiodipropionate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.