Aqueous dispersion of particles of a fluorine-containing-copolym

Details Aqueous dispersion of particles of a fluorine-containing-copolym Aqueous dispersion of particles of a fluorine-containing-copolym

1986-11-06

1988-10-25

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524535, 524458, 525276, 525902, C08L 8300

Patent

active

047804904

ABSTRACT:
An aqueous dispersion comprising an aqueous medium and colloidal particles of a fluorine-containing copolymer having an average particle size of about 0.05 to 1.0 um dispersed therein, each colloidal particle being constructed with a core portion made of a polymer comprising about 99 to 100% by weight of units of tetrafluoroethylene and about 0 to 1% by weight of units of at least one other fluoroolefin and a shell portion made of a polymer comprising about 50 to 97% by weight of units of tetrafluoroethylene and about 3 to 50% by weight of units of chlorotrifluoroethylene, the amount of chlorotrifluoroethylene in the core and shell portions being from about 2.5 to 25% by weight based on the entire amount of the core and shell portions.

REFERENCES:
patent: 3631141 (1971-12-01), Fang
patent: 4134995 (1979-01-01), Fumoto
patent: 4391940 (1983-07-01), Kuhls
patent: 4469846 (1984-09-01), Khan
patent: 4636549 (1987-01-01), Gangal

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