Block copolymers utilizing a mixture of cis and trans-isomers of 1,3-pentadiene
US4631314A · kind A · utility
15Cited by
2References
8Claims
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Key dates
| Filing date | Jun 26, 1985 |
| Grant date | Dec 23, 1986 |
| Priority date | — |
| Expiry date | Jun 26, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F297/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Block copolymers having two or more blocks may be prepared from vinyl-substituted aromatic hydrocarbons and a mixed isomer mixture of 1,3-pentadiene. At least one block is polymerized from the cis and trans-isomer mixture of 1,3-pentadiene. The amount of the mixed isomer mixture of 1,3-pentadiene polymerized may be increased by including in the mixed isomer mixture a cis-isomer polymerization promoter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.