Patent ID: 6683131
Filing Date: 2004-01-27
Classification: B05D,C09D,Y10T

Abstract:
A water-based liquid treatment composition for metal surfaces, said composition comprising water and:(A) dissolved, dispersed, or both dissolved and dispersed urethane resin, acrylic resin; or both urethane and acrylic resins; (B) dissolved, dispersed, or both dissolved and dispersed curing agent molecules; (C) dispersed silica powder; (D) dispersed oxidized polyethylene wax with an average particle size of 0.01 to 0.2 &mgr;m; and (E) dissolved, dispersed, or both dissolved and dispersed molecules that conform to the immediately following general chemical formula (I): â€ƒwherein: R1 represents a C1 to C20 alkyl moiety or a C2 to C20 alkenyl moiety; R2 represents a block homo-oligomer of oxyethylene or a block co-oligomer of oxyethylene and oxypropylene that conforms to the general chemical formula â€”(C2H4O)mâ€”(C3H6)nâ€”, wherein m represents an integer from 5 to 20 and n represents an integer from 0 to 10; R3 represents a hydrogen moiety or SO3M, where M represents a hydrogen atom, an alkali metal ion, or an ammonium ion; and R4 represents a hydrogen atom, a C1 to C4 alkyl moiety, or a C2 to C4 alkenyl moiety, wherein, in said liquid composition: the total solids from components (A) and (B) constitute from 50 to 95% by weight of the total solids from components (A) through (E); the solids from component (C) constitute from 3 to 40% by weight of the total solids from components (A) through (E); the total solids from components (D) and (E) constitute from 2 to 20% by weight of the total solids from components (A) through (E); and the ratio by weight of solids from component (A) to solids from component (B) is from 4:1.0 to 49:1.00.