Cook Composites & Polymers Co.

Roger Lovald

George A Smith

Stephen A Fischer

Michael S Wiggins

Reuben H Grinstein

David I Devore

Steve Boucher

George Roth

Shruti Singhal

Brenda Taipale

Paul D Whyzmuzis, Deceased

Paul D Whyzmuzis

James P Yosh, Jr

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, &agr;-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.

Solid acrylic resin using a continuous tube reactor

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.

Bulk polymerization process for preparing solid acrylic resin

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Lansdale, PA, United States of America

Roger Lovald