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US 4,186,119 AGranted
Polyurethanes prepared from alcohols and hydrocarbon polyisocyanates used in textile wet treatment processes
AssigneeSandoz Ltd.
InventorsJose Canela, Hans Gerber
Life of this patent
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Abstract
Disclosed is a textile wet treatment process wherein, to increase the lubricity of the substrate, certain specified polyurethanes are employed in the treatment liquor.
Claims22
A wet treatment process for synthetic or semi-synthetic textile material comprising employing a aqueous wet treatment liquor containing a polyurethane, which polyurethane is a reaction product of a compound or mixture of compounds 1, the or each compound 1 being a derivative of ammonia;
- a polyamine;
- urea;
- a polyamide;
- an aminoamide;
- an aminoalcohol;
- or a polyol containing up to 10 carbon atoms and up to 6 hydroxyl groups per molecule;
- in which at least three of the active hydrogen atoms of the amino, hydroxyl and/or amido moieties present are replaced by the same or different groups of formula 1a,
- --Alkylene-O).sub.n H 1a
- in which
- each Alkylene, independently, is straight or branched chain (C.sub.2-4)-alkylene, unsubstituted or substituted by a phenyl group, and
- n is an integer 1 to 100,
- and a compound or mixture of compounds 2, the or each compound 2 being a hydrocarbon polyisocyanate, in a molar ratio of compound(s) 1:
- compound(s) 2 of .SIGMA.p:.SIGMA.r, p being the moles of the or each compound 1 and r being the moles of the or each compound 2 reacted, .SIGMA.p and .SIGMA.r being so chosen that .SIGMA.(p.q).div..SIGMA.(r.m)=1.5 to 21 and .SIGMA.p.ltoreq..SIGMA.(r.m), q being the number of groups of formula 1a per molecule of the or each compound 1 and m being the number of isocyanate groups per molecule of the or each compound 2, and which polyurethane is water-soluble or -dispersible to a degree at least 1 g/l at 20.degree. C., and whose 1 g/l aqueous solution or dispersion at 20.degree. C. exhibits a viscosity of no more than 100 cp.
10 more elements
A polyurethane reaction product of the reaction between a compound or a mixture of compounds of formula 1', ##STR27## in which A.sub.1 is
- nitrogen,
- a radical 11b, ##STR28## a radical 12b, ##STR29## a radical 13b, ##STR30## a radical of an aliphatic, aromatic or araliphatic polyamide containing 5 to 1000 repeating units, said radical being derived from the polyamide by removal of the hydrogen atoms from the --CONH.sub.2 and --CONH groups,
- a radical 16b, ##STR31## a radical 17b, ##STR32## a radical of an alkanolamine containing a single amino group, 1 to 3 hydroxyl groups and 4 to 6 carbon atoms per molecule, said radical being derived from the alkanolamine by removal of the hydrogen atoms from the amino and from the hydroxyl group(s), or
- a radical of an aliphatic polyol containing 3 to 10 carbon atoms and 3 to 6 hydroxyl groups per molecule, said radical being derived from the polyol by removal of the hydrogen atoms from the hydroxyl groups,
- s is an integer 2 to 6,
- each t, independently, is an integer 2 or 3,
- x is an integer 2, 3 or 4,
- R.sub.3 is (C.sub.1-30) alkyl or (C.sub.3-20) alkenyl,
- Alkylene.sub.1 is --CH.sub.2 --.sub.2, --CH.sub.2 --.sub.3 or --CH.sub.2 --.sub.4,
- R.sub.4 is (C.sub.1-23) alkyl or (C.sub.2-19) alkenyl,
- each Alkylene.sub.2, independently, is a divalent group of formula ##STR33## wherein X is hydrogen, methyl, ethyl or phenyl, at least 35% of the Alkylene.sub.2 moieties being ethylene,
- each n", independently, is, when A.sub.1 is nitrogen, an integer 3 to 100, or, when A.sub.1 is any other of the indicated radicals, an integer 3 to 30,
- q'" is the maximum valency for each radical signified by A.sub.1, being 3 when A.sub.1 is nitrogen, 4 when A.sub.1 is a radical 11b, (3+x) when A.sub.1 is a radical 12b, 3 when A.sub.1 is a radical 13b, 7 to 1002 when A.sub.1 is a radical of a polyamide containing 5 to 1000 repeating units, respectively, 3, 4 or 5 when A.sub.1 is a radical of an alkanolamine containing 1, 2 or 3 hydroxyl groups per molecule, respectively, or 3, 4, 5 or 6 when A.sub.1 is a radical of an aliphatic polyol containing 3, 4, 5 or 6 hydroxyl groups, respectively, and
- q"" is an integer 3 to q'", with the provisos that, when A.sub.1 is a polyamide radical, the polymeric chain of the polyoxyalkylated polyamide is terminated at both ends by a group --Alkylene.sub.2 -O.sub.n" H].sub.q"", each repeating unit is the same or different, and the number of --Alkylene.sub.2 --O-- units present is at least as great as the number of active hydrogen atoms in the amido moieties of the pre-oxyalkylation precursor
- and a compound or mixture of compound 2, the or each compound 2 being a hydrocarbon polyisocyanate, in a molar ratio of compound(s) of formula 1':
- compound(s) 2 of .SIGMA.p':
- .SIGMA.r', p' being the moles of the or each compound of formula 1' and r' being the moles of the or each compound 2 reacted, and .SIGMA.p' and .SIGMA.r' being so chosen that .SIGMA.(p'.multidot.q"").div..SIGMA.(r'.multidot.m)=1.5 to 21 and .SIGMA.p'.ltoreq..SIGMA.(r'.multidot.m), q"" being the number of groups of formula 1'a,
- --Alkylene.sub.2 --O.sub.n" H 1'a
- per molecule of the or each compound of formula 1' and m being the number of isocyanate groups per molecule of the or each compound 2, and which polyurethane product is water-soluble or --dispersible to a degree of at least 1 g/l at 20.degree. C., and whose 1 g/l aqueous solution or dispersion at 20.degree. C. exhibits a viscosity of no more than 100 cp.
16 more elements
Dependencies are inferred from the claim text.