Semisolid water-based coating compositions

Details Semisolid water-based coating compositions Semisolid water-based coating compositions

C - Chemistry, Metallurgy

09

D

400/1000, 400/13

C09D 5/04 (2006.01) C09D 7/12 (2006.01) C09D 201/00 (2006.01)

Patent

CA 1170385

ABSTRACT OF THE DISCLOSURE This invention relates to coating compositions which are "solid" prior to application, yet, which when applied to a substrate, flow and level in a manner similar to conventional coating compositions The coating compositions of the invention comprise a gelled coating composition, capable of application and flow on a solid substrate comprising: (a) a water reducible polymer, (b) water, (c) an electrolyte, (d) a colloidal gelling agent, gelable by interaction with the electrolyte, in an amount sufficient, when interacted with said electrolyte, to gel the composition to form a stable semisolid and to provide a composition reducible to a coating application viscosity upon the application of a relatively small shearing force at a relatively small shearing rate; which gelled coating composition, after being sheared to a coating application viscosity, does not recover substantial colloidal gelling agent contributed gel structure and (e) an amount of a gel structure formation rate increasing compound which corresponds, or is hydrolyzable in situ to effectively provide A compound which corresponds to the formula: RXM(OH)y-x where M is selected from boron, aluminum, silicon, tin, titanium, zirconium, vanadium, niobium, hafnium, and tantalum; x is 0 or 1; y is the valence of M; and R is an organic moiety attached to M through a carbon-M bond; conden??te thereof; or a combination thereof; said mount being an amount sufficient to decrease the time required to form said gelled composition.

373242

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