Bulk polymerization process for preparing solid acrylic resin

Details Bulk polymerization process for preparing solid acrylic resin Bulk polymerization process for preparing solid acrylic resin

1997-10-10

2000-12-12

Teskin, Fred

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

Synthetic resins

Polymerizing in tubular or loop reactor

526227, 526230, 5263171, 5263186, C08F 2006, C08F 202

Patent

active

061600598

ABSTRACT:
Described is a process for making acrylic resins suitable as polymeric surfactants used in emulsion polymerization, as pigment grinding resins and for preparing dispersions used as overprint varnishes. The feedstock is styrene, .alpha.-methyl styrene, acrylic acid and a polymerization initiator and is preferably free of solvent. This mix is passed through a continuous tube reactor run at a controlled range of pressure and relatively low residence time and temperature. Optimally, when the polymer/unreacted monomers blend exits the reactor and is devolatilized, the recovered monomers are used to make up part of the feedstock.

REFERENCES:
patent: 3035033 (1962-05-01), Schweitzer, Jr. et al.
patent: 3141870 (1964-07-01), Deex
patent: 4713434 (1987-12-01), Sutterlin et al.
patent: 4948847 (1990-08-01), Morita et al.
patent: 5194525 (1993-03-01), Miura et al.

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