Prepolymers containing a perfluoropolyethereal chain and carboxy

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

1993-02-19

1995-01-31

Krass, Frederick

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528365, 528401, 525408, 525523, 525533, C08G 5942, C08G 5962

Patent

active

053860055

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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