US4475920A — Method for obtaining improved dyeings on polyamide

Claim 1

Independent Claim 120 words

A process for treating a textile substrate consisting of or comprising natural or synthetic polyamide comprising applying to the substrate, either before or after dyeing, a compound of formula I, ##STR7## in which R is an C 8-20 alkyl, each of R 1 and R 2 , independently, is --CH 2 --CHOHCH 2 --X or C 1-4 alkyl, with the proviso that the total number of carbon atoms in R+R 1 +R 2 is from 8 to 26, X is chlorine or bromine, Y is a non-chromophoric anion, and n is a whole number from 1 to 3, with the proviso that the application of a compound of formula I before dyeing is effected from a neutral to alkaline medium.

Claim 2

Dependent Claim 120 words

A process for treating a textile substrate consisting of or comprising natural or synthetic polyamide comprising applying to the substrate, either before or after dyeing, a compound of formula I, ##STR7## in which R is an C 8-20 alkyl, each of R 1 and R 2 , independently, is --CH 2 --CHOHCH 2 --X or C 1-4 alkyl, with the proviso that the total number of carbon atoms in R+R 1 +R 2 is from 8 to 26, X is chlorine or bromine, Y is a non-chromophoric anion, and n is a whole number from 1 to 3, with the proviso that the application of a compound of formula I before dyeing is effected from a neutral to alkaline medium.

Claim 3

Dependent Claim 106 words

A process for increasing the wet-fastness of an anionic dyestuff on a polyamide-containing textile substrate which comprises applying to the substrate dyed with an anionic dyestuff an effective amount of a compound or mixture of compounds of formula I ##STR8## in which R is C 6-20 alkyl, each of R 1 and R 2 , independently, is --CH 2 --CHOHCH 2 --X or C 1-4 alkyl, with the proviso that the total number of carbon atoms in R+R 1 +R 2 is from 8 to 26, X is chlorine or bromine, Y is a non-chromophoric anion, and n is a whole number from 1 to 3.

Claim 4

Dependent Claim 106 words

A process for increasing the wet-fastness of an anionic dyestuff on a polyamide-containing textile substrate which comprises applying to the substrate dyed with an anionic dyestuff an effective amount of a compound or mixture of compounds of formula I ##STR8## in which R is C 6-20 alkyl, each of R 1 and R 2 , independently, is --CH 2 --CHOHCH 2 --X or C 1-4 alkyl, with the proviso that the total number of carbon atoms in R+R 1 +R 2 is from 8 to 26, X is chlorine or bromine, Y is a non-chromophoric anion, and n is a whole number from 1 to 3.

Claim 5

Dependent Claim 29 words

A process according to claim 2 in which, in the compound of formula I,R is C 12 alkyl, R 1 and R 2 are methyl and X is chlorine.

Claim 6

Dependent Claim 26 words

A process according to claim 3 in which, in the compound of formula I, Y is Cl - , Br - or SO 4 -- .

Claim 7

Dependent Claim 19 words

A process according to claim 2, in which the compound of formula I is applied from an alkaline medium.

Claim 8

Dependent Claim 24 words

A process according to claim 2 wherein the compound of formula I is applied from a medium having a pH of 4 to 10.

Claim 9

Dependent Claim 80 words

A process according to claim 6 wherein, in the compound of formula I, R is C 8-14 alkyl and each of R 1 and R 2 , independently, is --CH 2 CHOHCH 2 X or C 1-2 alkyl and said compound is applied in a printing paste or padding liquor containing 40 to 100 g/l of said compound or from an exhaust liquor containing said compound in an amount of 1 to 15% based on the weight of the substrate.

Claim 10

Dependent Claim 29 words

A process according to claim 7 in which, in the compound of formula I,R is C 12 alkyl, R 1 and R 2 are methyl and X is chlorine.

Claim 11

Dependent Claim 26 words

A process according to claim 8 in which, in the compound of formula I, Y is Cl - , Br - or SO 4 -- .

Claim 12

Dependent Claim 111 words

A process for increasing the affinity of a polyamide-containing substrate for anionic dyestuffs which comprises applying to the substrate, from a neutral to alkaline medium, before dyeing with an anionic dyestuff, an effective amount of a compound or mixture of compounds of formula I ##STR9## in which R is C 8-20 alkyl, each of R 1 and R 2 , independently, is --CH 2 --CHOHCH 2 --X or C 1-4 alkyl, with the proviso that the total number of carbon atoms in R+R 1 +R 2 is from 8 to 26, X is chlorine or bromine, Y is a non-chromophoric anion, and n is a whole number from 1 to 3.

Claim 13

Dependent Claim 111 words

A process for increasing the affinity of a polyamide-containing substrate for anionic dyestuffs which comprises applying to the substrate, from a neutral to alkaline medium, before dyeing with an anionic dyestuff, an effective amount of a compound or mixture of compounds of formula I ##STR9## in which R is C 8-20 alkyl, each of R 1 and R 2 , independently, is --CH 2 --CHOHCH 2 --X or C 1-4 alkyl, with the proviso that the total number of carbon atoms in R+R 1 +R 2 is from 8 to 26, X is chlorine or bromine, Y is a non-chromophoric anion, and n is a whole number from 1 to 3.

Claim 14

Dependent Claim 12 words

A process according to claim 10 wherein R is C 8-16 alkyl.

Claim 15

Dependent Claim 12 words

A process according to claim 10 wherein R is C 8-14 alkyl.

Claim 16

Dependent Claim 26 words

A process according to claim 12, in which the compound of formula I is applied to the substrate by printing, padding or by the exhaust process.

Claim 17

Dependent Claim 38 words

A process according to claim 13 wherein, in the compound of formula I, R is C 8-14 alkyl and each of R 1 and R 2 , independently, is --CH 2 CHOHCH 2 X or C 1-2 alkyl.

Claim 18

Dependent Claim 31 words

A process according to claim 13, in which the compound of formula I is applied from a printing paste or padding liquor containing 1 to 100 g/l compound of formula I.

Claim 19

Dependent Claim 21 words

A process according to claim 15, in which the paste or liquor contains 40 to 100 g/l compound of formula I.

Claim 20

Dependent Claim 21 words

A process according to claim 16 which includes the further step of fixing the compound of formula I on the substrate.

Claim 21

Dependent Claim 36 words

A process according to claim 13, in which the compound of formula I, is applied from an exhaust bath containing 1 to 15% by weight compound of formula I, based on the weight of the substrate.

Claim 22

Dependent Claim 28 words

A process according to claim 18, in which the exhaust bath contains 5 to 10% by weight, compound of formula I, based on the weight of the substrate.

Claim 23

Dependent Claim 28 words

A process according to claim 13, in which the compound of formula I is applied from a padding solution or paste containing 1 to 20 g/l alkaline salt.

Claim 24

Dependent Claim 26 words

A process according to claim 13, in which the compound of formula I is applied from an exhaust bath containing 0.5 to 2.5 g/l alkaline salt.

Claim 25

Dependent Claim 19 words

A process according to claim 13, in which the compound of formula I is applied from an alkaline medium.

Claim 26

Dependent Claim 20 words

A process according to claim 12 which further comprises the step of dyeing the treated substrate with an acid dye.

Claim 27

Dependent Claim 24 words

A process according to claim 12, in which R is C 12 alkyl, R 1 and R 2 are methyl and X is chlorine.

Claim 28

Dependent Claim 24 words

A process according to claim 12 wherein the compound of formula I is applied from a medium having a pH of 7 to 9.

Claim 29

Dependent Claim 20 words

A process according to claim 25 which further comprises the step of dyeing the treated substrate with an acid dye.

Claim 30

Dependent Claim 50 words

A process according to claim 26 wherein the compound of formula I is applied from a printing paste or padding liquor containing 1 to 100 g/l of said compound or from an exhaust bath containing 1 to 15% by weight of said compound based on the weight of the substrate.

Claim 31

Dependent Claim 31 words

A process according to claim 27 which comprises applying the compound of formula I from a printing paste or padding liquor and fixing said compound on the substrate prior to dyeing.

Claim 32

Dependent Claim 79 words

A process according to claim 25 wherein, in the compound of formula I, R is C 8-14 alkyl and each of R 1 and R 2 independently, is --CH 2 CHOHCH 2 X of C 1-2 alkyl and said compound is applied in a printing paste or padding liquor containing 40 to 100 g/l of said compound of from an exhaust liquor containing said compound in an amount of 1 to 15% based on the weight of the substrate.

Claim 33

Dependent Claim 20 words

A process according to claim 29 which further comprises the step of dyeing the treated substrate with an acid dye.

Claim 34

Dependent Claim 29 words

A process according to claim 29 in which, in the compound of formula I,R is C 12 alkyl, R 1 and R 2 are methyl and X is chlorine.

Claim 35

Dependent Claim 26 words

A process according to claim 31 in which, in the compound of formula I, Y is Cl - , Br - or SO 4 -- .

Claim 36

Dependent Claim 19 words

a process according to claims 1, 15, 18, 20, 25 or 6, in which the treating medium contains electrolyte.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1987-10-09	1988-04-09	1988-10-09	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1991-10-09	1992-04-09	1992-10-09	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1995-10-09	1996-04-09	1996-10-09	$7700.00	Window Closed / Lapsed

Method for obtaining improved dyeings on polyamide

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