Process for producing thermoplastic resin

Details Process for producing thermoplastic resin Process for producing thermoplastic resin

1983-07-20

1984-12-11

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

528488, 528489, 5263291, 526337, 5263285, 5263292, C08F 600, C08G 600, C08J 300

Patent

active

044878575

ABSTRACT:
A process for producing a thermoplastic resin capable of giving a molded article having a very good appearance, by coagulating a thermoplastic resin latex prepared by an emulsion polymerization method which comprises making the latex into a coagulated slurry by carrying out the coagulation procedure in a range of temperatures lower than the solidifying point of the thermoplastic resin, adding an alkaline substance to said coagulated slurry in a range of temperatures lower than the aforesaid solidifying point so that the pH of said coagulated slurry is adjusted to a pH 0.1 or more higher than its pH at the time of the coagulation and that the pH of the whole coagulated slurry after the addition of the alkaline substance is adjusted to 7.0 or lower, and then raising the temperature of said coagulated slurry to solidify the coagulated particles.

REFERENCES:
patent: 2378732 (1945-06-01), Semon et al.
patent: 3010936 (1961-11-01), Irvin
patent: 3761455 (1973-09-01), Tanaka et al.
patent: 4213888 (1980-07-01), Karg et al.

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