High performance segmented elastomer
US5239009A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1991 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Oct 16, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F297/046
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
It is highly desirable for tire treads to exhibit good traction characteristics such as good wet skid resistance. However, it has traditionally been very difficult to improve the traction characteristics of a tire without sacrificing rolling resistance and tread wear. The high performance segmented elastomers of this invention offer a unique combination of desirable characteristics for utilization in making tire tread compositions. For instance, the rubbery polymers of this invention can be made into tire treads which exhibit outstanding traction characteristics while maintaining good rolling resistance and tread durability. This invention more specifically reveals a rubber polymer which has an excellent combination of properties for use in making tire treads which is comprised of repeat units which are derived essentially from at least one conjugated diene monomer, wherein the first segment has a number average molecular weight which is within the range of about 25,000 to about 350,000; and (b) a final segment which is comprised of repeat units which are derived from 1,3-butadiene, isoprene, and styrene, wherein the repeat units in the final segment are in essentially random order…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.