Prepolymers containing a perfluoropolyethereal chain and carboxy

Details Prepolymers containing a perfluoropolyethereal chain and carboxy Prepolymers containing a perfluoropolyethereal chain and carboxy

1995-01-24

1995-09-26

Krass, Frederick

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525407, 525408, 525409, 525523, 525533, 528110, 528365, 528401, 528408, 560 83, 560 91, 560104, 560111, 560112, 560125, 560128, 560229, 560230, 560263, 560264, 560198, C08G 5942, C08G 5962, C08G 6532

Patent

active

054534682

ABSTRACT:
The invention relates to two classes of prepolymers containing a perfluoropolyethereal chain and carboxylic end groups, suitable as cross-linking agents for epoxy prepolymers. The first class contains anhydride-derived end groups; the second lactone-derived end groups; prepolymers therefrom are also disclosed. Additional non-fluorinated curing agents may also be added.

REFERENCES:
patent: 3665041 (1972-05-01), Sianesi et al.
patent: 3810874 (1974-05-01), Mitsch et al.
patent: 3847978 (1974-11-01), Sianesi et al.
patent: 4816545 (1989-03-01), Re et al.
patent: 4851485 (1989-07-01), Re et al.

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