Blends of polar thermoplastic polymers and modified block copolymers
US4906687A · kind A · utility
35Cited by
40References
57Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 31, 1987 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Dec 31, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L77/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A multiphase thermoplastic composition is provided by incorporating at least one polar thermoplastic polymer with at least one functionalized, selectively hydrogenated alkenyl arene/conjugated diene block copolymer to which has been grafted an effective amount of carboxyl functional groups primarily in the alkenyl arene blocks thereof. The carboxyl functional groups may be in the form of carboxylic acids, their salts and esters, and combinations thereof. The rubbery compositions of the present invention possess improved tensile strength, high temperature mechanical properties and oil resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.