Atactic copolymers of propylene with ethylene
US6111046A · kind A · utility
40Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1996 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Mar 1, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/61927
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Amorphous polymers of propylene modified with ethylene units are prepared in high yields, by carrying out the polymerization reaction in the presence of a catalyst based on a metallocene compound that has two bridged fluorenyl ligands. These copolymers have glass transition temperatures (T.sub.g) well below 0.degree. C., making it possible for the products manufactured from them to be used at low temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.