Coating compositions containing ethylene-acrylic acid copolymers with polyamide grafts as rheology modifiers
AssigneeAlliedSignal Inc.
InventorMichael Jablon
Life of this patent
Estimating the term…
Abstract
An improved coating composition having one or more polymeric binders dispersed in a liquid medium, wherein the improvement comprises an anti-sag and anti-settling effective amount of a copolymer comprising a polymeric backbone comprising recurring monomeric units derived from monomers selected from the group consisting of one or more α-olefins and one or more unsaturated carboxylic acids, said backbone having grafted thereto, by a covalent amide linkage, one or more polymeric grafts comprising at least one recurring monomeric unit selected from the group consisting of: —NHC(O)RC(O)NHR1 and —NH—R—C(O)— or a combination thereof, wherein R is an alkylene group of at least about 2 carbon atoms, and R1 is R or aryl.
Claims24
An improved coating composition comprising a uniform blend of one or more polymeric binders dispersed in a liquid medium, which liquid medium consists essentially of at least one component selected from the group consisting of water and organic solvents and an anti-sag and anti-settling effective amount of a copolymer comprising a polymeric backbone comprising recurring monomeric units derived from monomers selected from the group consisting of at least one α-olefin and at least one unsaturated carboxylic acid, said backbone having grafted thereto, by a covalent amide linkage, one or more polymeric grafts comprising at least one recurring monomeric unit selected from the group consisting of
- —NHC(O)RC(O)NHR1
- and
- —NH—R—C(O)—
- wherein R is an alkylene group of at least 2 carbon atoms, and R1 is R or aryl.
An improved coating composition which comprises a uniform blend of a pigment and one or more polymeric binders dispersed in a liquid medium, which medium consists essentially of at least one of water and an organic solvent, wherein the improvement comprises uniformly blended therein an anti-sag and anti-settling effective amount of a copolymer comprising a polymeric backbone comprising recurring monomeric units derived from monomers selected from the group consisting of ethylene and acrylic acid, said backbone having grafted thereto, by a divalent amide linkage, one or more polymeric grafts comprising units derived from aminocaproic acid.
A coating composition, comprising a uniform blend of:
- (a) one or more polymeric binders dispersed in a liquid medium, which liquid medium consists essentially of at least one of water and an organic solvent;
- (b) a pigment;
- (c) from about 0.5 to about 2.0% by weight of a copolymer comprising a polymeric backbone comprising recurring monomeric units derived from monomers selected from the group consisting of ethylene and acrylic acid, said backbone having grafted thereto, by a covalent amide linkage, one or more polymeric grafts comprising units derived from aminocaproic acid, wherein said composition has a sag resistance of at least 12 mils, as measured according to ASTM D-4400 Method A, when dried at a temperature of about 150° C.
A coating composition, comprising a uniform blend of:
- (a) one or more polymeric binders dispersed in a liquid medium, which liquid medium consists essentially of at least one of water and an organic solvent;
- (b) a pigment;
- (c) from about 0.5 to about 1.0% by weight of a copolymer comprising a polymeric backbone comprising recurring monomeric units derived from monomers selected from the group consisting of ethylene and acrylic acid, said backbone having grafted thereto, by a divalent amide linkage, one or more polymeric grafts comprising aminocaproic acid, wherein said composition has a low shear viscosity of about 3000 to about 5000 cps, as measured according to ASTM D-2196 Method A, and a high shear viscosity of about 500 to about 2000 cps, measured according to ASTM D-4287, wherein said composition has a sag resistance of at least 12 mils, measured according to ASTM D-4400 Method A, when dried at a temperature of about 150° C., and wherein said composition exhibits at a rate of settling at least 300% less at room temperature than a composition without said copolymer, as measured according to ASTM D-869.
Dependencies are inferred from the claim text.