Process for producing heat resistant materials

Details Process for producing heat resistant materials Process for producing heat resistant materials

1974-08-21

1976-06-08

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

260 4575K, 260 4575D, 260876R, 260890, 260897C, 264185, D01F 600, D01F 614, C08F 2924

Patent

active

039623980

ABSTRACT:
A method for producing fibers and films comprising emulsion polymerizing a polyvinyl alcohol derivative having sulfone or sulfate group with a chlorine-containing vinyl monomer, adding the thus formed emulsion to a matrix of polyvinyl alcohol and then coagulating the mixture into a film or fiber. The resulting polymeric compositions are composed of polyvinyl alcohol, the sulfone or sulfate-containing polyvinyl alcohol and the chlorine containing vinyl polymer, in which a part of the chlorine-containing vinyl polymer is grafted onto the polyvinyl alcohol derivative. The emulsions used possess excellent stability and the films and fibers therefrom possess excellent heat resistance.

REFERENCES:
patent: 2843562 (1958-07-01), Caldwell
patent: 2879256 (1959-03-01), Wooten et al.
patent: 2895786 (1959-07-01), Schlack
patent: 3111370 (1967-11-01), Okamura et al.
patent: 3859390 (1975-01-01), Tsuji et al.
patent: 3887676 (1975-06-01), Okamura et al.
patent: 3907958 (1975-09-01), Tsuji et al.

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