Carpet treatment
AssigneeMinnesota Mining and Manufacturing Company
InventorKalyanji U. Patel
Life of this patent
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Abstract
Carpet is rendered soil resistant and stain repellant by contacting it with a carpet treating composition comprising a liquid containing a water-insoluble addition polymer derived from polymerizable ethylenically unsaturated monomer free of nonvinylic fluorine and having at least one major transition temperature higher than about 25.degree. C., and a water-insoluble fluoroaliphatic radical- and aliphatic chlorine-containing ester having at least one major transition temperature higher than about 25.degree. C.
Claims12
A composition suitable for the treatment of carpet comprising a liquid comprising
- a. water-insoluble addition polymer derived from polymerizable ethylenically unsaturated monomer free of nonvinylic fluorine, said polymer having at least one major transition temperature higher than about 25.degree. C., and
- b. water-insoluble fluoroaliphatic radical- and aliphatic chlorine-containing ester containing at least 25 percent by weight of carbon-bonded fluorine, in the form of fluoroaliphatic radical, and having at least one major transition temperature higher than about 25.degree. C.
A composition suitable for the treatment of carpets to impart durable soil-resistant and stain-repelling properties thereto, said composition comprising a liquid medium comprising
- (a) a copolymer of ethyl methacrylate and methyl methacrylate, and
- (b) a urethane of a mixture of alcohols of the formulas
- C.sub.8 F.sub.17 SO.sub.2 N(CH.sub.3)C.sub.2 H.sub.4 [OCH.sub.2 CH(CH.sub.3 Cl)].sub.n OH
- (where n is 1 or 2)
- C.sub.8 F.sub.17 SO.sub.2 N(CH.sub.3)C.sub.2 H.sub.4 OH
- and a mixture of 2,4-tolylene diisocyanate and isophorone diisocyanate.
A composition suitable for the treatment of carpet to impart soil and stain resistance thereto, said composition comprising an aqueous emulsion comprising
- a. water-insoluble addition polymer derived from polymerizable ethylenically unsaturated monomer free of nonvinylic fluorine, said polymer having at least one major transition temperature higher than about 25.degree. C., and
- b. water-insoluble fluoroaliphatic radical- and aliphatic chlorine-containing ester free of ethylenic or acetylenic unsaturation, containing at least 25 percent by weight of carbon-bonded fluorine, in the form of fluoroaliphatic radical, and having at least one major transition temperature higher than about 25.degree. C.,
- and wherein the weight ratio of said addition polymer to said ester is in the range of 1:10 to 10:1 provided that the mixture of the two components contains at least 5 wt. % of fluorine in the form of fluoroaliphatic radicals.
Dependencies are inferred from the claim text.