Process for the copolymerization of 4-methyl-1-pentene
US5182330A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1991 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Aug 13, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F110/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In the copolymerization of 4-methyl-1-pentene and at least one alpha olefin under batch polymerization conditions at a temperature of at least about 50.degree. C. wherein 4-methyl-1-pentene is initially polymerized in the absence of comonomer and then comonomer is added to the reaction vessel to permit copolymer formation, the improvement comprising initially forming 4-methyl-1-pentene homopolymer in an amount sufficient to reduce the solubility of the later formed copolymer at the polymerization temperature, said homopolymer being no more than about 5 weight percent of the end product copolymer. Also the products of such polymerizations are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.