Spheroidal particulate polytetrafluoroethylene dispersion resin

Details Spheroidal particulate polytetrafluoroethylene dispersion resin Spheroidal particulate polytetrafluoroethylene dispersion resin

1977-05-06

1979-03-20

Anderson, Harold D.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260 296F, C08F 1426

Patent

active

041455029

ABSTRACT:
Particulate polytetrafluoroethylene dispersion resin characterized by high molecular weight, relatively large particle size, uniform spherical particle shape and narrow particle size distribution, which is suitable for making stable concentrated aqueous polytetrafluoroethylene dispersions of concentrations higher than heretofore available, is made by polymerization of tetrafluoroethylene in aqueous dispersion in the conjoint presence of liquid octafluorocyclobutane and certain polyfluorinated carboxylic acid salt dispersing agents, using water-soluble peroxide initiators.

REFERENCES:
patent: 2559752 (1951-07-01), Berry

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