Fluorinated polymers and copolymers containing perfluoropolyethe

Details Fluorinated polymers and copolymers containing perfluoropolyethe Fluorinated polymers and copolymers containing perfluoropolyethe

1988-12-08

1990-08-07

Anderson, Harold D.

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

Synthetic resins

Polymer of an ethylenically unsaturated reactant with a...

525185, 525539, 528397, 528425, C08G 6702, C08G 6100

Patent

active

049469363

ABSTRACT:
By means of radicalic starters, fluoroolefins are polymerized in the presence of perfluoropolyethers containing, at one or at both ends, a bromine atom, in such amounts that the weight ratio between the perfluoropolyethers and the fluorinated olefins in the resulting product ranges from 4/1 to 1/50. The bromine-containing perfluoropolyethers utilized in the process have a molecular weight from 400 to 10,000, and preferably from 600 to 8,000. The resulting polymeric products comprise sequences of perfluoroolefinic units and perfluoropolyether blocks.

REFERENCES:
patent: 4330654 (1982-05-01), Ezzell et al.
patent: 4687821 (1987-08-01), Ezzell et al.

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