Stable mineral spirit dispersions of carboxyl-containing polymers
AssigneeThe B. F. Goodrich Company
InventorsThomas R. George, Jr., Robert Y. Lochhead, Jr.
Life of this patent
Estimating the term…
Abstract
Dispersions or slurries of carboxyl-containing polymers in mineral spirits in which the polymer settles and is difficultly redispersible are converted to dispersions or slurries in which the tendency to settle is reduced and which are readily redispersible with minimum agitation are obtained when there is added to the dispersions or slurries a linear or branched block copolymer of propylene oxide and ethylene oxide as well as glyceryl tris-12-hydroxystearate and/or mixed saturated C.sub.18 -C.sub.36 fatty acid triglycerides.
Claims15
Stable slurries of polymers of olefinically unsaturated carboxylic acids containing at least one activated carbon-to-carbon olefinic double bond and at least one carboxyl group in mineral spirits in concentrations from about 15 to 70 weight percent polymer containing stabilizing amounts of at least one block copolymer and at least one glyceryl tris-12-hydroxystearate and/or mixed saturated C.sub.18 -C.sub.36 fatty acid triglycerides, said block copolymer is selected from block copolymers of propylene oxide and ethylene oxide having molecular weight in the range of about 1,000 to 20,000 and containing about 10 to 80% by weight of polyoxyethylene units.
Dependencies are inferred from the claim text.