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US 5,356,683 AGranted
Expandable coating composition
AssigneeRohm and Haas Company
InventorsScott L. Egolf, Reginald T. Smart
Life of this patent
Estimating the term…
Abstract
An expandable aqueous coating composition includes a polymeric binder including latex particles wherein the latex particles include a copolymer having a glass transition temperature of about -20.degree. C. to about +60.degree. C. and a weight average molecular weight of about 20,000 to about 500,000 and including expandable particles having a liquid blowing agent contained within a thermoplastic shell.
Claims4
A method for making a wallcovering, comprising;
- applying a layer of an expandable aqueous coating to a substrate layer, said coating comprising:
- a polymeric binder, said binder comprising latex particles, said latex particles comprising a copolymer having a glass transition temperature of about -20.degree. C. to about +60.degree. C. and a weight average molecular weight of about 20,000 to about 500,000;
- and
- expandable particles, said expandable particles comprising a liquid blowing agent contained within a thermoplastic shell;
- heating the coated substrate to dry the layer of coating and expand the expandable particles.
2 more elements
Dependencies are inferred from the claim text.