Abstract
Poly(alkenyl substituted aromatic) and elastomer containing polymer compositions, obtainable by a process comprising:
(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;
(b) dissolution of at least one EPDM .rubber and an optionally partially hydrogenated diblock copolymer A-8, 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;
(c) prepolymerization of the obtained mixture until a polymerization degree of from 5 to 20%;
(d) suspending the prepolymerized mass into an aqueous medium;
(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.
(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;
(b) dissolution of at least one EPDM .rubber and an optionally partially hydrogenated diblock copolymer A-8, 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;
(c) prepolymerization of the obtained mixture until a polymerization degree of from 5 to 20%;
(d) suspending the prepolymerized mass into an aqueous medium;
(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.
| Original language | English |
|---|---|
| Patent number | EPO0404261A2 |
| Priority date | 23/06/89 |
| Filing date | 19/06/90 |
| Publication status | Published - 19 Jun 1990 |