Preparation of high cis-1,4-polybutadiene with reduced gel
US5412045A · kind A · utility
22Cited by
5References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 16, 1994 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Sep 16, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F136/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is provided a process for the preparation of a high cis-1,4-polybutadiene with a reduced microgel content wherein a novel catalyst system consisting of (1) a nickel salt of a carboxylic acid, (2) a mixture of triethyl aluminum and an organoaluminum compound having the formula R.sub.3 Al, said mixture having an average composition Et.sub.3-x R.sub.x Al wherein Et is an ethyl group, x is a numeral from 0.1 to 2.9 and R is an alkyl group having 8 to 12 carbon atoms, and (3) a boron trifluoride etherate is used to polymerize 1,3-butadiene in an inert hydrocarbon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.