Ethynyl and substituted ethynyl-terminated polysulfones

Details Ethynyl and substituted ethynyl-terminated polysulfones Ethynyl and substituted ethynyl-terminated polysulfones

1982-10-08

1984-02-14

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

525534, 525535, 525536, 528 25, 528 26, C08K 541

Patent

active

044317611

ABSTRACT:
Ethynyl and substituted ethynyl-terminated polysulfones and a process for preparing the same are disclosed. These polysulfones are thermally cured to induce cross-linking and chain extension, producing a polymer system with improved solvent resistance and use temperatures. Also disclosed are substituted 4-ethynylbenzoyl chlorides as precursors to the substitutetd ethynyl-terminated polysulfones and a process for preparing the same.

REFERENCES:
patent: 3539657 (1970-11-01), Noshay et al.
patent: 3567687 (1971-03-01), Lohwasser et al.
patent: 3654192 (1972-04-01), Vogel
patent: 3748306 (1973-07-01), Khattah
patent: 4108926 (1978-08-01), Arnold et al.
patent: 4226800 (1980-10-01), Picklesimmer
patent: 4229560 (1980-10-01), Chernikhov et al.
patent: 4252939 (1981-02-01), Mori et al.

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