Method for producing thermoplastic resins

Details Method for producing thermoplastic resins Method for producing thermoplastic resins

1986-12-24

1990-05-01

Schofer, Joseph L.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 67, 525 73, 525 80, 525 86, 525197, 525100, 525103, 525106, 528485, 528486, 528488, 528490, 528491, 528493, 528497, 528498, 528501, C08L 5100

Patent

active

049219090

ABSTRACT:
Emulsion polymerization type thermoplastic resin of high performance can be produced by the following methods: namely, a method which comprises removing an aqueous phase from a two-phase mixture comprising a latex of polymer (1) produced by emulsion polymerization, a water soluble agent (2) in an amount of 10% by weight or less of said polymer (1) which is capable of coagulating the latex of polymer (1) and an organic agent (3) in an amount of 0.1 to 6 times the weight of said polymer (1) which is capable of dissolving both an uncrosslinked polymer contained in said polymer (1) and thermoplastic polymer (4) mentioned hereinbelow and has a solubility in water of 5% by weight or less at 25.degree. C., then melt-mixing molten polymer which has been subjected to a first devolatilization by a thermal means with thermoplastic resin (4) and then subjecting the mixture to a second devolatilization; and a method which comprises removing an aqueous phase from a two-phase mixture comprising a latex of polymer (1) produced by emulsion polymerization, a water soluble agent ( 2) in an amount of 10% by weight or less of said polymer (1) which is capable of coagulating the latex of polymer (1) and an organic agent (3) in an amount of 0.1 to 6 times the weight of said polymer (1) which is capable of dissolving an uncrosslinked polymer contained in said polymer (1) and has a solubility in water of 5% by weight or less at 25.degree. C. and then melt-mixing the molten polymer from which volatile component has been devolatilized by a thermal means with thermoplastic polymer (4').

REFERENCES:
patent: 3592878 (1971-07-01), Kromolicki
patent: 3700622 (1972-10-01), Terenzi
patent: 4080352 (1978-03-01), Wallace
patent: 4186047 (1980-01-01), Salmon
patent: 4284737 (1981-08-01), Kruse et al.
patent: 4290932 (1981-09-01), Wright et al.
patent: 4369278 (1983-01-01), Kasahara et al.
patent: 4578455 (1986-03-01), Pipper et al.
patent: 4690974 (1987-09-01), Sugimori et al.

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