Embrittlement-resistant polyolefin composition and flexible articles therefrom
US5804620A · kind A · utility
8Cited by
16References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Jun 18, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2023/42
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An embrittlement-resistant polymer composition, including: (a) a visbroken polymer composition comprising a crystalline, random copolymer of propylene and either ethylene or C.sub.4 -C.sub.10 1-olefins, and (b) an amount of polymethyl propyl 3-oxy-4-(2,2,6,6-tetramethyl)piperidinyl! siloxane which is effective to improve the radiation resistance of the composition. Optional components include an acid neutralizing agent, and a sorbitol-based clarifier compound. The composition may be used to manufacture medical articles and food packaging material which must be sterilized, either by irradiation or by autoclaving.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.