Elastomeric copolymides containing fluorine and process for prep

Details Elastomeric copolymides containing fluorine and process for prep Elastomeric copolymides containing fluorine and process for prep

1975-06-17

1978-03-21

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 37N, 260 47CP, 260 63HA, 260 65, 260 78UA, C08G 7310, C08G 7312

Patent

active

040803198

ABSTRACT:
A new class of elastomeric copolymers the chains of which contain perfluoropolyether radicals having a linear structure linked through cycloimide groups to organic radicals of different and suitable structure is disclosed, as well as a process for preparing such copolymers which comprises condensing a mixture of fluorinated polyether diamines with one or more tetracarboxylic dianhydrides or esters.

REFERENCES:
patent: 3179634 (1965-04-01), Edwards
patent: 3336258 (1967-08-01), Angelo et al.
patent: 3416994 (1968-12-01), Chalmers et al.
patent: 3423365 (1969-01-01), Hoegger
patent: 3436372 (1969-04-01), Hoegger et al.
patent: 3505411 (1970-04-01), Rice
patent: 3810874 (1974-05-01), Mitsch et al.

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