Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1995-08-11
1998-01-27
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C08F 1418
Patent
active
057123551
ABSTRACT:
Amorphous copolymer of fluoromonomer, such as tetrafluoroethylene, with vinyl ester, such as vinyl acetate, having a substantially uniform composition is made by aqueous dispersion polymerization by maintaining essentially constant the proportion of the fluoromonomer and vinyl ester copolymerizing with one another. In one embodiment, this proportion consistency is obtained by reducing the agitation rate of the aqueous polymerization medium during the copolymerization reaction at constant fluoromonomer feed pressure within the polymerization reactor.
REFERENCES:
patent: 2468664 (1949-04-01), Hanford et al.
patent: 5032656 (1991-07-01), Mares et al.
E. I. Du Pont de Nemours and Company
Sarofim N.
Schofer Joseph L.
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