Metallocene random copolymers with cool temperature impact properties
US8247512B2 · kind B2 · utility
1Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2007 |
| Grant date | Aug 21, 2012 |
| Priority date | — |
| Expiry date | Aug 26, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/65922
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A metallocene random copolymer of propylene and ethylene in which the ductile/brittle transition temperature of a molded article made from the copolymer may be in the range of from about 20° F. (−7° C.) to about 40° F. (4° C.). The haze level of the molded article may be less than about 10 percent for an 80-mil (0.2 cm) thick plaque. The metallocene random copolymer may further include a clarifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.