Process for producing blends of syndiotactic 1,2-polybutadiene and rubbery elastomers with a chromium-based catalyst system
US6291591A · kind A · utility
30Cited by
20References
20Claims
0Family size
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Key dates
| Filing date | Apr 13, 2000 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Apr 13, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L9/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Blends of syndiotactic 1,2-polybutadiene and rubbery elastomers are prepared by a process that comprises polymerizing 1,3-butadiene monomer into syndiotactic 1,2-polybutadiene within a rubber cement of at least one rubbery elastomer by using a chromium-based catalyst composition that is formed by combining a chromium-containing compound, a hydrogen phosphite, and an organomagnesium compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.