Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1992-05-05
1994-01-04
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526254, C08F 1624
Patent
active
052761215
ABSTRACT:
Copolymers of perfluoro(1,3-dimethyl-2,2-dioxole) with perfluoro(butenyl vinyl ether) and, optionally, with a third comonmer are amorphous in all monomer proportions, and soluble in perfluoro(2-butyl tetrahydrofuran). These copolymers are suitable in many high technology applications, especially where solubility is important, e.g., in applying coatings to substrates or articles for protection against mechanical, chemical, or environmental hazards. Dipolymers of the present invention have lower glass transition temperatures than dipolymers of perfluoro(1,3-dimethyl-2,2-dioxole) with tetrafluoroethylene having the same monomer proportions.
REFERENCES:
patent: 3978030 (1976-08-01), Resnick
patent: 4754009 (1988-06-01), Squire
patent: 4897457 (1990-01-01), Nakamura et al.
patent: 4935477 (1990-06-01), Squire
E. I. Du Pont de Nemours and Company
Sarofim N.
Schofer Joseph L.
Steyermark Paul R.
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