Poly(alkenyl substituted aromatic) and elastomer containing polymer compositions and process for their preparation
US5079268A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1990 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | May 30, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/905
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Poly(alkenyl substituted aromatic) and elastomer containing polymer compositions, obtainable by a process comprising: PA1 (a) conversion of polyphenylene ether or a structurally related polymer thereof with an acid halide, an acid anhydride or ketene, in at least one alkenyl substituted aromatic monomer; PA0 (b) dissolution of at least one EPDM rubber and an optionally partially hydrogenated diblock copolymer A--B, optionally mixed with minor amounts of triblock copolymers ABA, wherein A represents a poly(alkenyl aromatic) block and B represents an optionally, partially hydrogenated poly conjugated diene block; PA0 (c) prepolymerization of the obtained mixture until a polymerization degree of from 5 to 20%; PA0 (d) suspending the prepolymerized mass into an aqueous medium; PA0 (e) polymerization by thermal initiation or by initiation by means of at least one free radical initiator, optionally in the presence of an expanding agent; and a process for the preparation of such polymer compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.