Talc containing polyolefin compositions
US4080359A · kind A · utility
6Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 1977 |
| Grant date | Mar 21, 1978 |
| Priority date | — |
| Expiry date | Jul 20, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/372
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyolefin composition comprising: (1) about 70 to about 35% by weight of a polyolefin; (2) about 30 to about 65% by weight of a talc containing a metal content of up to about 0.9% by weight; and (3) based on the total amount of (1) and (2), at least 0.02% by weight of a specific alkyl 3,5-di-t-butyl-4-hydroxy-hydrocinnamate and at least 0.03% by weight of a specific dialkyl thiodipropionate or acetate. A sheet formed from this composition is odor free, has good whiteness, and can be fabricated into food packaging containers by a vacuum or pressure forming technique.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.