Process for photochemical stabilization of undyed and dyed polyamide fibre material and blends thereof with other fibres: copper complex and light stabilizer treatment

Claim 2

A process for the photochemical stabilization of undyed and dyed polyamide fiber material or blends thereof with other fiber material, which comprises treating the fiber material with a mixture of (A) a non-dyeing copper complex of an alkylene bisazomethine, cycloalkylene bisazomethine, acylhydrazone, semicarbazone or thiosemicarbazone of an aromatic aldehyde or ketone, or an oxime, (B) a light stabilizer and, if desired, (C) an antioxidant.

Claim 3

A process according to claim 1, wherein the components (A) used is a copper complex of the formula (1) ##STR44## in which R is hydrogen or a substituted or unsubstituted alkyl or aryl radical, Q is a substituted or unsubstituted alkylene or cycloalkylene radical and n is 0, 1, 2 or 3, and the benzene rings A and B can be substituted independently of one another.

Claim 4

A process according to claim 2, wherein the component (A) used is a bisazomethine complex of the formula (2) ##STR45## in which R' is hydrogen, or C 1 -C 3 -alkyl, R 1 , R 2 , R 3 and R 4 are each hydrogen, halogen, hydroxy, hydroxyalkyl, alkyl, alkoxy, alkoxyalkoxy, alkoxyalkoxyalkoxy, carboxymethoxy, alkylamino, dialkylamino, --SO 2 NH 2 , --SO 2 NHR o or --SO 2 N(R o ) 2 , R o being alkyl or alkoxyalkyl, and alkyl or alkoxy each being understood as meaning groups having 1-4 carbon atoms, or R 1 and R 2 or R 2 and R 3 or R 3 and R 4 together with the carbon atoms, to which they are linked, form a benzene radical, and Q 1 is a C 2 -C 4 -alkylene radical, a C 2 -C 8 -alkylene radical interrupted by a oxygen or nitrogen or a ##STR46## bridge, in which X and Y each are C 1 -C 4 -alkyl or an aromatic radical or X and Y, together with the carbon atoms to which they are linked, form a cycloaliphatic radical having 5-7 carbon atoms.

Claim 5

A process according to claim 1, wherein the component (A) used is an acylhydrazone of an aromatic aldehyde or ketone, of the formula (3) ##STR47## in which R 1 and R 5 independently of one another are hydrogen or a substituted or unsubstituted alkyl or aryl radical.

Claim 6

A process according to claim 1, wherein the component (A) used is a semicarbazone or thiosemicarbazone of the formula (3a) ##STR48## in which R 1 is hydrogen or a substituted or unsubstituted alkyl or aryl radical and Z 2 is oxygen or sulfur.

Claim 7

A process according to claim 1, wherein the component (A) used is a copper compound of a phenol of the formula (4) ##STR49## where R is H, OH, alkyl or cycloalkyl, and in which the ring A may be substituted further.

Claim 8

A process according to claim 3, wherein the component (A) used is a bisazomethine complex of the formula (5) ##STR50## in which R 6 , R 7 , R 8 and R 9 are each hydrogen, hydroxy, chlorine, bromine, methyl, tert.butyl, methoxy, methoxyethoxy, ethoxyethoxyethoxy or diethylamino and R 7 can in addition also be sulfo, X 1 is hydrogen, methyl, ethyl or phenyl and Y 1 is hydrogen, or R 6 and R 7 together form a benzene radical or X 1 and Y 1 together form a cyclohexylene radical.

Claim 9

A process according to claim 7, wherein the component (A) used is a bisazomethine complex of the formula (6) ##STR51## in which R 10 , R 11 and R 13 are each hydrogen, chlorine, bromine, methyl or methoxy and R 11 can in addition also be sulfo, or R 10 and R 11 together form a benzene ring, R 12 is hydrogen or hydroxy and X 2 is hydrogen, methyl, ethyl or phenyl.

Claim 10

A process according to claim 1, the component (B) used is a 2-hydroxybenzophenone of the formula (7) ##STR52## in which R 1 is hydrogen, hydroxy or C 1 -C 14 alkoxy R 2 is hydrogen, C 1 -C 4 -alkyl or sulfo, R 3 is hydrogen, hydroxy or C 1 -C 4 -alkoxy and R 4 is hydrogen, hydroxy or carboxy.

Claim 11

A process according to claim 1, wherein the component (B) used is a 2-(2'-hydroxyphenyl)-benzotriazole or a salt thereof, of the formula (8) ##STR53## in which R 1 is hydrogen, C 1 -C 12 -alkyl, chlorine, C 5 -C 6 -cycloalkyl, C 7 -C 9 -phenylalkyl or sulfo, R 2 is hydrogen, C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy, chlorine, hydroxy or sulfo, R 3 is C 1 -C 12 -alkyl, C 1 -C 4 -alkoxy, phenyl, (C 1 -C 8 -alkyl)phenyl, C 5 -C 6 -cycloalkyl, C 2 -C 9 -alkoxycarbonyl, chlorine, carboxyethyl, C 7 -C 9 -phenylalkyl or sulfo, R 4 is hydrogen, chlorine, C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy, C 2 -C 9 -alkoxycarbonyl, carboxy or sulfo and R 5 is hydrogen or chlorine.

Claim 12

A process according to claim 1, wherein the component (B) is a 2,2,6,6-tetraalkylpiperidine derivative which, in its molecule, contains at least one group of the formula (9) ##STR54## in which R is hydrogen or methyl.

Claim 13

A process according to claim 1, wherein the component (B) used is a 2-(2'-hydroxyphenyl)-s-triazine or a salt thereof, of the formula (12) ##STR55## in which R is hydrogen, halogen, C 1 -C 4 -alkyl or sulfo, R 1 is hydrogen, C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy or hydroxy, R 2 is hydrogen or sulfo and R 3 and R 4 independently of one another are C 1 -C 4 -alkyl, C 1 -C 4 -alkoxy, C 5 -C 6 -cycloalkyl phenyl or phenyl substituted by C 1 -C 4 -alkyl and hydroxy.

Claim 14

A process according to claim 1, wherein the component (B) used is an s-triazine compound of the formula ##STR56## in which at least one of the substituents R 1 , R 2 and R 3 is a radical of the formula ##STR57## in which M is sodium, potassium, calcium, magnesium, ammonium or tetra-C 1 -C 4 -alkylammonium and m is 1 or 2, and the remaining substituent or substituents independently of one another are C 1 -C 12 -alkyl, phenyl, or C 1 -C 12 -alkyl or phenyl which are bonded to the triazinyl radical via oxygen, sulfur, imino or C 1 -C 4 -alkylimino.

Claim 15

A process according to claim 1, wherein the component (C) used is a hydroxyphenylpropionate of the formula (13) ##STR58## in which n is an integer from 1 to 4 and A is C 1 -C 24 -alkoxy, a bridge member --O(CH 2 ) 6 O--, --O(CH 2 ) 2 O(CH 2 ) 2 O--, --O(CH 2 ) 2 O(CH 2 ) 2 O(CH 2 ) 2 O--, --HN--(CH 2 ) 2-6 --NH-- or --O(CH 2 ) 2 --S--(CH 2 ) 2 O-- or is the radical--CH 2 O) 4 --C.

Claim 16

A process according to claim 1, wherein the component (C) used is a phenylalkylphosphonate of the formula (14) ##STR59## in which R is hydroxy, phenyl, phenoxy, C 1 -C 18 -alkylphenoxy, C 1 -C 24 -alkylthio or C 1 -C 24 -alkoxy, R 1 is phenoxy, C 1 -C 18 -alkylphenoxy, C 1 -C 24 -alkylthio or C 1 -C 24 -alkoxy, R 2 and R 3 independently of one another are C 1 -C 18 -alkyl, R 4 is hydrogen or C 1 -C 4 -alkyl and n is 0, 1, 2 or 3.

Claim 17

An agent for the photochemical stabilization of undyed and dyed polyamide fibre material or blends thereof with other fibre materials, which comprises (A) 0.005 to 0.20% by weight of a non-dyeing organic copper complex according to claim 1, (B) 0.05 to 3% by weight of a light stabilizer and, if desired, (C) 0.05 to 3% by weight of an antioxidant.

Claim 18

A polyamide fibre material, or blends thereof with other fibre materials, treated by the process according to claim 1.