Oil and water repellent compositions
AssigneeMinnesota Mining and Manufacturing Company
InventorDirk M. Coppens
Life of this patent
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Abstract
The invention relates to a water and oil repellency imparting composition which comprises: (a) a fluoroaliphatic radical-containing agent; and (b) a polymer comprising cyclic carboxylic anhydride groups. Additionally, the composition may comprise: (c) a softener and/or a plasticizer. The composition provides water and oil repellent properties to fibrous and other substrates treated therewith and it shows high compatibility with the commonly used softeners.
Claims9
A composition for imparting water and oil repellency to substrates selected from the group consisting of fibrous substrates and leather consisting of:
- (a) a fluoroaliphatic radical-containing agent selected from the group consisting of fluoroaliphatic radical-containing polyesters, polyamides, polyepoxides, vinyl polymers, polyurethanes, N-methylol condensation products, and polycarbodiimides;
- and, a second ingredient,
- (b) a polymer comprising cyclic carboxylic anhydride groups selected from the group consisting of:
- (i) copolymers of at least one cyclic carboxylic anhydride having an ethylenically unsaturated bond and at least one compound having a terminal ethylenically unsaturated bond selected from the group consisting of 1-octadecyl vinyl ether, octadecyl methylvinylether, 1-hexadecene, 1-decene, 1-tetradecene, octadecene, octadecylmethacrylate, and butylmethacrylate;
- and
- (ii) polymers selected from the group consisting of polyolefins and poly(meth)acrylic acid derivatives having pendant cyclic carboxylic anhydride groups pendant from the main polymer chain;
- with the proviso that the composition does not contain water if the fluoroaliphatic radical-containing agent is a water soluble or dispersible polyoxyalkylene compound and the polymer comprising cyclic carboxylic anhydride groups is a styrene-maleic anhydride copolymer or a vinyl acetate-maleic anhydride copolymer.
A water and oil repellency imparting composition comprising:
- (a) a fluoroaliphatic radical-containing agent selected from the group consisting of fluoroaliphatic radical-containing polyesters, polyamides, polyepoxides, vinyl polymers, polyurethanes, N-methylol condensation products, and polycarbodiimides;
- and, a second ingredient,
- (b) a polymer comprising cyclic carboxylic anhydride groups selected from the group consisting of:
- (i) copolymers of at least one compound having a terminal ethylenically unsaturated bond selected from the group consisting of aliphatic compounds having 2 to 30 carbon atoms, (meth)acrylic acid derivatives, vinyl ethers, and .alpha.-methylstyrene and at least one cyclic carboxylic anhydride having an ethylenically unsaturated bond;
- and
- (ii) polymers having pendant cyclic carboxylic anhydride groups;
- and
- (c) an additional component selected from the group consisting of silicone softeners and plasticizers selected from the group consisting of aliphatic or aromatic esters, polyesters, paraffins, substituted paraffins, and epoxy type plasticizers;
- with the proviso that the composition does not contain water if the fluoroaliphatic radical-containing agent is a water soluble or dispersible polyoxyalkylene compound and the polymer comprising cyclic carboxylic anhydride groups is a styrene-maleic anhydride copolymer or a vinyl acetate-maleic anhydride copolymer.
A method for imparting water and oil repellency to substrates selected from the group consisting of fibrous substrates and leather comprising applying to such substrates a composition consisting of:
- (a) a fluoroaliphatic radical-containing polyurethane and, a second ingredient,
- (b) a polymer comprising cyclic carboxylic anhydride groups selected from the group consisting of:
- (i) copolymers of at least one compound having a terminal ethylenically unsaturated bond selected from the group consisting of aliphatic compounds having 2 to 30 carbon atoms, (meth)acrylic acid derivatives, vinyl ethers, styrene and .alpha.-olefins containing an aromatic group and at least one cyclic carboxylic anhydride having an ethylenically unsaturated bond;
- and
- (ii) polymers having pendant cyclic carboxylic anhydride groups;
- with the proviso that the composition does not contain water if the fluoroaliphatic radical-containing agent is a water soluble or dispersible polyoxyalkylene compound and the polymer comprising cyclic carboxylic anhydride groups is a styrene-maleic anhydride copolymer or a vinyl acetate-maleic anhydride copolymer.
Dependencies are inferred from the claim text.