Fibrous substrate treatment
AssigneeRhodia Consumer Specialties Limited
InventorMohsen Zakikhani
Life of this patent
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Abstract
A method is provided of altering the chemical and/or physical functionality of a fibrous substrate (e.g. fibers, fabrics and fiber-resin composites) by the action of a polymeric composition containing at least one phosphono- or phosphino-component. The polymeric composition may include VPA, VDPA or hypophosphorous acid. The fibres may be cellulosic and/or non-cellulosic, or metal or ceramic. The method can be used, for example, to enhance the receptivity of a fibrous substrate to dyes.
Claims18
A method of treating a fibrous substrate to alter its chemical and/or physical functionality comprising reacting a fibrous substrate with an aqueous solution of a polymeric composition comprising at least one phosphono-component selected from the group consisting of:
- (a) monomeric or homopolymeric vinylidene-1,1-diphosphonic acid;
- (b) homopolymeric vinylphosphonic acid;
- (c) a copolymer of homopolymeric vinylphosphonic acid or homopolymeric vinylidene-1,1-diphosphonic acid, with an unsaturated sulphonic acid, an unsaturated carboxylic acid, an unsaturated amide, a primary amine, a secondary amine or a polyalkylene imine;
- (d) a terpolymer of homopolymeric vinylphosphonic acid or homopolymeric vinylidene-1,1-diphosphonic acid, with two components selected from the group consisting of unsaturated sulphonic acids, unsaturated carboxylic acids, unsaturated amides, primary amines, secondary amines and polyalkylene imines;
- and
- (e) a reaction product of homopolymeric vinylidene-1,1-diphosphonic acid and a primary amine, a secondary amine, a polyalkylene imine, hypophosphorous acid or a salt of hypophosphorous acid;
- and
- (f) a phosphono-substituted monocarboxylic acid or dicarboxylic acid;
- and subsequently including said fibrous substrate in a resin matrix.
Dependencies are inferred from the claim text.