High vinyl polybutadiene or styrene-butadiene copolymer
US4397994A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1981 |
| Grant date | Aug 9, 1983 |
| Priority date | — |
| Expiry date | Sep 18, 2001 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H5/186
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
High vinyl polybutadiene or styrene-butadiene copolymer obtained by polymerizing 1,3-butadiene alone or with styrene in a hydrocarbon solvent using an organolithium compound as an initiator and coupling the resulting polymer, characterized in that PA1 (1) the polybutadiene or styrene-butadiene copolymer comprises at least 20% by weight of a polymer having in its molecular chain a linkage between butadienyl and at least one metal selected from the group consisting of silicon, germanium, tin and lead, PA1 (2) the styrene content of said copolymer is 40% by weight or less, and PA1 (3) the polybutadiene or the butadiene portion of the styrene-butadiene copolymer has a vinyl content of 50 to 95%. Said polybutadiene or styrene-butadiene copolymer has low rolling resistance, high wet skid resistance, highly improved fracture property and, an excellent processability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.