Claims
- 1. A method for making polyarylene sulfide-polyetherimide block copolymer which comprises, effecting an imide-amine exchange reaction between a polyarylene sulfide oligomer of the formula, ##STR19## and an aryldiamine,
- H.sub.2 N--R.sup.2 NH.sub.2,
- in the presence of aromatic bisetheranhydride of the formula, ##STR20## where R is a C.sub.(6-14) arylene radical, R.sup.1 is a C.sub.(6-30) divalent aromatic radical, R.sup.2 is a C.sub.(6-30) divalent aromatic radical, R.sup.5 is a C.sub.(1-14) aromatic organo radical, and n is an integer having a value of from 1 to 50 inclusive.
- 2. A method in accordance with claim 1, where the polyarylene sulfide oligomer is chain stopped with phthalimide group whose nitrogen atom is substituted with a monovalent 5 or 6-membered heterocyclic group containing nitrogen.
- 3. A method in accordance with claim 2, where the heterocyclic chain stopper is N-(2-pyridyl)phthalimide group.
Parent Case Info
This application is a continuation of application Ser. No. 07/399,045, filed Aug. 28, 1989, now abandoned, is a continuation of application Ser. No. 194,653 filed May 16, 1988, now abandoned which is a division of application Ser. No. 056,198 filed Jun. 1, 1987, now U.S. Pat. No. 4,769,424.
US Referenced Citations (8)
Divisions (2)
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Number |
Date |
Country |
Parent |
399045 |
Aug 1989 |
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Parent |
56198 |
Jun 1987 |
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Continuations (1)
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Date |
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Parent |
194653 |
May 1988 |
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