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US6790905B2 Expired / Lapsed US ⏱️ 0.0 years remaining

Highly repellent carpet protectants

Assignee: Chemours Co FC LLC

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Filing: 2001-10-09

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Granted: 2004-09-14

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Expires: 2021-10-09

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Abstract

Abstract Carpet protectants comprising an aqueous dispersion comprising A. a partially fluorinated urethane polymer having at least one urea linkage, which compound is the product of the reaction of: (1) at least one organic polyisocyanate containing at least three isocyanate groups; (2) at least one fluorochemical compound which contains per molecule (a) a single functional group having one or more Zerewitinoff hydrogen atoms and (b) at least two carbon atoms, each of which is attached to at least two fluorine atoms; and (3) water in an amount sufficient to react with from about 5% to about 60% of the isocyanate groups in said polyisocyanate; B. a non-fluorinated cationic surfactant; and C. a non-fluorinated nonionic surfactant are disclosed.

Inventors

👤 Patrick Henry Fitzgerald
👤 Andrew Hen Liu
👤 Peter Michael Murphy
👤 Charles L. Strickler

Bibliographic Details

Application Number —

Jurisdiction US

Data Source google_patents

Last Synchronized 2026-10-29 13:13

CPC Classifications

D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06M15/576; C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77; C08G18/78; C08G18/7806; C08G18/7818; C08G18/7831; C08G18/28; C08G18/2805; C08G18/288; C08G18/2885; D06M2200/00; D06M2200/10; D06M2200/11; D06M2200/12; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23986; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/2964; Y10T428/2967; Y10T428/31504; Y10T428/31551; Y10T428/31562; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2189; Y10T442/2197; Y10T442/2221; Y10T442/2238; Y10T442/2246; Y10T442/2861; Y10T442/2893

Claims Analysis

Total Claims: 26

Claim 1

Independent Claim 130 words

An aqueous dispersion consisting essentially of A. a partially fluorinated urethane polymer having at least one urea linkage, which compound is the product of the reaction of: (1) at least one organic polyisocyanate containing at least three isocyanate groups; (2) at least one fluorochemical compound which contains per molecule (a) a single functional group having one or more Zerewitinoff hydrogen atoms and (b) at least two carbon atoms, each of which is attached to at least two fluorine atoms; and (3) water in an amount sufficient to react with from about 5% to about 60% of the isocyanate groups in said polyisocyanate; B. a non-fluorinated cationic surfactant; and C. a non-fluorinated nonionic surfactant, said dispersion providing oil and water repellency upon application to a fibrous substrate without causing tip staining.

Claim 2

Dependent Claim 130 words

Claim 3

Dependent Claim 26 words

The dispersion of claim 1 wherein the cationic surfactant is selected from the group consisting of salts of protonated amines, quaternary ammonium salts, and amine oxides.

Claim 4

Dependent Claim 119 words

The dispersion of claim 2 wherein the cationic surfactant is selected from the group consisting of at least one of a protonated alkyl dimethyl amine salt, protonated dialkyl methyl amine salt, protonated alkyl ethoxylated amine salt, protonated alkyl diamine salt, protonated alkyl ethoxylated diamine salt, alkyl trimethyl ammonium salt, dialkyl dimethyl ammonium salt, alkyl methyl ethoxylated ammonium salt, alkyl dimethyl benzyl ammonium salt, dialkyl methyl benzyl ammonium salt, alkyl pyridinium salt, alkylamidomethyl pyridinium salt, carboalkoxy pyridinium salt, alkyl quinolinium salt, alkyl isoquinolinium salt, N,N-alkyl methyl pyrollidinium salt, amidoimidazolium salt, amido ammonium salt, quaternary ammonium salt of alkyl diamine, ethoxylate of a quaternary ammonium salt of alkyl diamine, alkyl dimethyl amine oxide, dialkyl methyl amine oxide, and alkyl diamine oxide.

Claim 5

Dependent Claim 14 words

The dispersion of claim 3 wherein the cationic surfactant is dialkyl dimethyl ammonium chloride.

Claim 6

Dependent Claim 48 words

The dispersion of claim 1 wherein the nonionic surfactant is a condensate with ethylene oxide of at least one of a fatty acid alkanol amide, an alkyl phenol, a fatty acid, a fatty alcohol, an ester of a fatty acid and polyhydric alcohol, and a polyoxypropylene block copolymer.

Claim 7

Dependent Claim 38 words

The dispersion of claim 5 wherein the nonionic surfactant is of the formula A C x H (2x+1) O—(CH 2 CH 2 O) n —H A wherein x is 12 to 18 and n is 5 to 100.

Claim 8

Dependent Claim 14 words

The dispersion of claim 6 wherein the nonionic surfactant is a polyethoxylated linear alcohol.

Claim 9

Dependent Claim 69 words

The dispersion of claim 1 wherein the cationic surfactant is selected from the group consisting of salts of protonated amines, quaternary ammonium salts, and amine oxides, and the nonionic surfactant is a condensate with ethylene oxide of at least one of a fatty acid alkanol amide, an alkyl phenol, a fatty acid, a fatty alcohol, an ester of a fatty acid and polyhydric alcohol, and a polyoxypropylene block copolymer.

Claim 10

Dependent Claim 23 words

The dispersion of claim 8 wherein the cationic surfactant is dialkyl dimethyl ammonium chloride and the non-ionic surfactant is a polyethoxylated linear alcohol.

Claim 11

Dependent Claim 29 words

The dispersion of claim 1 wherein the amount of surfactant is from about 1.5% to about 8% by weight based on the amount of the partially fluorinated urethane polymer.

Claim 12

Dependent Claim 24 words

The dispersion of claim 1 wherein the amount of water is sufficient to react with about 15% to about 30% of said isocyanate groups.

Claim 13

Dependent Claim 32 words

The dispersion of claim 1 wherein the polyisocyanate is selected from the group consisting of hexamethylene diisocyanate homopolymer, hydrocarbon diisocyanate-derived trimer, isocyanate trimer of toluene diisocyanate, and isocyanate trimer of 3-isocyanato-methyl-3,4,4-trimethylcyclohexyl isocyanate.

Claim 14

Dependent Claim 92 words

The dispersion of claim 1 wherein said fluorochemical compound which contains a single functional group is represented by the formula: R f —R k —X—H in which R f is a monovalent aliphatic group containing at least two carbon atoms each of which is attached to at least two fluorine atoms; R is a divalent organic radical; k is 0 or 1; and X is —O—, —S—, or —N(R 3 )— in which R 3 is H, alkyl containing 1 to 6 carbon atoms or a R f —R k — group.

Claim 15

Dependent Claim 59 words

The dispersion of claim 1 wherein said fluorochemical compound which contains a single functional group is represented by the formula: R f —(CH 2 ) q —X—H in which R f is a mixture of perfluoroalkyl groups, CF 3 CF 2 (CF 2 ) r in which r is 2 to 18; and q is 1, 2 or 3.

Claim 16

Dependent Claim 37 words

The dispersion of claim 14 wherein R f is a mixture of said perfluoroalkyl groups, CF 3 CF 2 (CF 2 ) r ; and r is 2, 4, 6, 8, 10, 12, 14, 16, and 18.

Claim 17

Dependent Claim 13 words

The dispersion of claim 14 wherein X is oxygen and q is 2.

Claim 18

Dependent Claim 186 words

The dispersion of claim 1 wherein said fluorochemical compound which contains a single functional group is represented by the formula: R f —R k —R 2 —X′—H wherein R f is a monovalent aliphatic group containing at least two carbon atoms each of which is attached to at least two fluorine atoms; R is the divalent radical: —C m H 2m SO—, —C m H 2m SO 2 —, —SO 2 N(R 3 )—, or —CON(R 3 )— in which m is 1 to 22 and R 3 is H or alkyl of 1 to 6 carbon atoms; k is 0 or 1; R 2 is the divalent linear hydrocarbon radical: —C n H 2n — which can be optionally end-capped by n is 0 to 12, p is 1 to 50, and R 4 , R 5 and R 6 are the same or different H or alkyl containing 1 to 6 carbon atoms; and X′ is —O—, —S—, or —N(R 7 )—in which R 7 is H, alkyl containing 1 to 6 carbon atoms or a R f —R k —R 2 — group.

Claim 19

Dependent Claim 106 words

The dispersion of claim 1 additionally comprising a non-fluorinated organic compound represented by the formula: R 10 —(R 11 ) k —YH wherein R 10 is a C 1 -C 18 alkyl, a C 1 -C 18 omega-alkenyl radical or a C 1 -C 18 omega-alkenoyl; R 11 is R 4 , R 5 and R 6 are the same or different H or alkyl radical containing 1 to 6 carbon atoms and p is 1 to 50; k is 0 or 1; and Y is —O—, —S—, or —N(R 3 )— in which R 3 is H or alkyl containing 1 to 6 carbon atoms.

Claim 20

Independent Claim 128 words

A method for providing water and oil repellency to a substrate comprising application to the substrate of an aqueous dispersion comprising A. a partially fluorinated urethane polymer having at least one urea linkage, which compound is the product of the reaction of: (1) at least one organic polyisocyanate containing at least three isocyanate groups; (2) at least one fluorochemical compound which contains per molecule (a) a single functional group having one or more Zerewitinoff hydrogen atoms and (b) at least two carbon atoms, each of which is attached to at least two fluorine atoms; and (3) water in an amount sufficient to react with from about 5% to about 60% of the isocyanate groups in said polyisocyanate; B. a non-fluorinated cationic surfactant; and C. a non-fluorinated nonionic surfactant.

Claim 21

Independent Claim 128 words

Claim 22

Dependent Claim 71 words

The method of claim 19 wherein the dispersion contains a cationic surfactant selected from the group consisting of salts of protonated amines, quaternary ammonium salts, and amine oxides, and the nonionic surfactant is a condensate with polyethylene oxide of at least one of a fatty acid alkanol amide, an alkyl phenol, a fatty acid, a fatty alcohol, an ester of a fatty acid and polyhydric alcohol, and a polyoxypropylene block copolymer.

Claim 23

Dependent Claim 27 words

The method of claim 20 wherein the dispersion contains a cationic surfactant which is dialkyl dimethyl ammonium chloride and the non-ionic surfactant is a polyethoxylated linear alcohol.

Claim 24

Dependent Claim 31 words

The method of claim 19 wherein the dispersion is applied at a rate sufficient to provide from about 100 micrograms to about 2000 micrograms fluorine per gram of dry substrate fiber.

Claim 25

Dependent Claim 14 words

The method of claim 19 wherein the dispersion is applied by spraying or foaming.

Claim 26

Dependent Claim 17 words

The method of claim 19 wherein the dispersion is co-applied with a composition which provides stain resistance.

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USPTO Annuity & Maintenance Windows

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	2007-09-14	2008-03-15	2008-09-14	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	2011-09-14	2012-03-15	2012-09-14	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2015-09-14	2016-03-15	2016-09-14	$7700.00	Window Closed / Lapsed

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