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US 6,207,594 B1Granted
Polyamide substrate having stain resistance, composition and method
AssigneeTrichromatic Carpet Inc.
InventorYassin M. Elgarhy
Life of this patent
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Abstract
A combination of a semi-soluble or insoluble ethylmethacrylate polymer and a soluble or semi-soluble methacrylic acid polymer, optionally with a partially sulfonated resol resin which provides improved resistance to staining by acid colorants in a fibrous polyamide substrate.
Claims22
A fibrous polyamide substrate having resistance to staining by acid colorants, comprising:
- a fibrous polyamide substrate having applied there to a combination of:
- a) a semi-soluble or insoluble ethyl methacrylate polymer having a weight average molecular weight of 100,000 to 500,000 and a number average molecular weight of 25,000 to 100,000;
- and
- b) a soluble or semi-soluble methacrylic acid polymer having a weight average molecular weight of 100,000 to 500,000 and a number average molecular weight of 50,000 to 100,000.
1 more element
A fibrous polyamide substrate having resistance to staining by acid colorants, said fibrous polyamide substrate having applied thereto a combination of:
- a) a polymer selected from semi-soluble and insoluble homopolymers of ethylmethacrylate and semi-soluble or insoluble copolymers of ethylmethacrylate and at least one comonomer selected from ethylacrylate, methylacrylate, methylmethacrylate, methacrylic acid, butylmethacrylate, isobutylmethacrylate or 2-ethylhexylmethacrylate;
- said polymer having a weight average molecular weight of 100,000 to 500,000 and a number average molecular weight of 25,000 to 100,000;
- b) a polymer selected from soluble or semi-soluble homopolymers of methacrylic acid, and soluble or semi-soluble copolymers of methacrylic acid and at least one comonomer selected from ethylacrylate, 2-ethylhexylmethacrylate, ethyl methacrylate, methylmethacrylate, butylmethacrylate or isobutyl methacrylate;
- said polymer having a weight average molecular weight of 100,000 to 500,000 and a number average molecular weight of 50,000 to 100,000;
- and
- c) a partially sulfonated resol resin.
3 more elements
A method of imparting stain resistance to acid colorants, to a fibrous polyamide substrate comprising:
- contacting said fibrous polyamide substrate with an aqueous formulation comprising in an aqueous vehicle
- a) a semi-soluble or insoluble ethylmethylacrylate polymer having a weight average molecular weight of 100,000 to 500,000 and a number average molecular weight of 25,000 to 100,000, and
- b) a soluble or semi-soluble methacrylic acid polymer having a weight average molecular weight of 100,000 to 500,000 and a number average molecular weight of 50,000 to 100,000.
Dependencies are inferred from the claim text.