Textile fabrics with reduced buildup of odor
Mixtures are described which contain reaction products of one or more amines with one or more epoxides and additionally isocyanates. Applying such mixtures to textile fabrics, especially polyester fiber fabrics, reduces or prevents unpleasant sweaty odor after physical exercise. The effects are very durable to laundering.
1 . A textile fabric treated with a liquid composition and subsequently dried and cured, wherein the liquid composition contains a component A comprising one or more reaction products formed from the reaction of a mixture of a polyepoxide and amines a), b) and c) wherein
a) is a non-ethoxylated amine of formula
where R is an alkyl of 6 to 24 and n is from 0 to 10,
b) is a polyetheramine of formula
where each P is H or CH 3 and W is H or
where T is an alkyl of 1 to 6 carbon atoms where x, y and z are each from 0 to 50 subject to the proviso that the sum x+y+z is from 3 to 100, and
c) is an amino-functional polyorganosiloxane derived from polydialkylsiloxanes as a result of one or more alkyl groups in the polydialkylsiloxane chain being replaced by moieties of formula
or of formula
wherein the amines a), b) and c) can be used in the reaction as a mixture or individually in succession, and wherein component A comprises a primary amino group and is a liquid; and
a component B comprising at least one monoisocyanate or polyisocyanate or a mixture of such isocyanates, wherein the polyisocyanate comprises isocyanates can be present in free or blocked form; and
wherein the liquid composition is an aqueous composition having a pH less than 7, and
wherein the textile fabric comprises an add-on of 0.5 to 3 wt % on the textile fabric, based on water-free and solvent-free product, and is dried at a temperature in the range from 100 to 120° C. and/or cured at a temperature in the range from 140 to 180° C.
2 . The textile fabric as claimed in claim 1 , wherein the textile fabric is a woven or knitted fabric consisting essentially of polyester at 50 to 100 wt %, based on the total weight of the textile fabric.
3 . The textile fabric as claimed in claim 1 , consisting of 100 wt % polyethylene terephthalate fibers.
4 . The textile fabric as claimed in claim 1 , wherein said component B is an aliphatic or aromatic diisocyanate or a mixture of such diisocyanates.
5 . The treated textile fabric of claim 1 wherein a relative odor index of the treated textile fabric is greater than that of the textile fabric.
6 . The treated textile fabric of claim 1 wherein the liquid composition comprises acetic acid.
7 . A liquid composition comprising:
component A comprising one or more reaction products formed from the reaction of a mixture of a polyepoxide and amines a), b) and c) wherein
a) is a non-ethoxylated amine of formula
where R is an alkyl of 6 to 24 and n is from 0 to 10,
b) is a polyetheramine of formula
where each P is H or CH 3 and W is H or
where T is an alkyl of 1 to 6 carbon atoms where x, y and z are each from 0 to 50 subject to the proviso that the sum x+y+z is from 3 to 100, and
c) is an amino-functional polyorganosiloxane derived from polydialkylsiloxanes as a result of one or more alkyl groups in the polydialkylsiloxane chain being replaced by moieties of formula
or of formula
wherein the amines a), b) and c) can be used in the reaction as a mixture or individually in succession, and wherein component A comprises a primary amino group and is a liquid, and
component B comprising at least one monoisocyanate or polyisocyanate or a mixture of such isocyanates, wherein the polyisocyanate comprises isocyanates present in free or blocked form and wherein the liquid composition is an aqueous composition having a pH less than 7.
8 . The liquid composition of claim 7 wherein component B comprises a polyisocyanate comprising a free isocyanate group, wherein the polyisocyanate comprises a prepolymer formed by reaction of an unsubstituted or alkyl-substitututed 1,6-hexamethylene diisocyanate, 4,4′-diphenylmethane diisocyanate, 4,4′-dicyclohexylmethylene diisocyanate or tolylene diisocyanate with mono- or polyhydric alcohols.
9 . The liquid composition of claim 8 wherein the mono- or polyhydric alcohols comprise 1,1,1-trimethylolpropane, propylene glycol and N-methyldiethanolamine.
10 . The textile fabric of claim 1 wherein component B comprises a polyisocyanate comprising a free isocyanate group, wherein the polyisocyanate comprises a prepolymer formed by reaction of an unsubstituted or alkyl-substitututed 1,6-hexamethylene diisocyanate, 4,4′-diphenylmethane diisocyanate, 4,4′-dicyclohexylmethylene diisocyanate or tolylene diisocyanate with mono- or polyhydric alcohols.
11 . The textile fabric of claim 10 wherein the mono- or polyhydric alcohols comprise 1,1,1-trimethylolpropane, propylene glycol and N-methyldiethanolamine.
12 . The textile fabric of claim 1 wherein the textile fabric comprises polyester fibers and other fibers selected from cotton fibers, elastane fibers or polyamide fibers.
13 . The liquid composition of claim 7 wherein P is CH 3 and the sum x+y+z is from 5 to 6.
14 . The textile fabric of claim 1 wherein P is CH 3 and the sum x+y+z is from 5 to 6.