Process of making polymer blends
US7256240B1 · kind B1 · utility
19Cited by
14References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 22, 2006 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Dec 22, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2314/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In a process for producing a polymer blend, at least one first monomer is polymerized in a first slurry phase reaction zone in the presence of a supported first catalyst to produce a thermoplastic first polymer having a crystallinity of at least 30%. At least part of said first polymer is then contacted with at least one second monomer different from said first monomer in a second solution phase reaction zone in the presence of a second catalyst and in the absence of polyenes under conditions to produce a second polymer having a crystallinity of less than 20%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.