Claims
- 1. A stablilized stoving lacquer composition comprising
- (a) an acid catalyzed stoving lacquer based on hot crosslinkable acrylic, polyester or alkyd resins,
- (b) an N-substituted 2,2,6,6-tetraalkylpiperidine compound or its acid addition salt,
- (c) a UV absorber selected from the group consisting of the benzophenones, benzotriazoles, acrylic acid derivatives, organic nickel compounds and oxanilides, and
- (d) a phenolic antioxidant.
- 2. A composition according to claim 1 which contains as component (b) a compound which contains a group of the formula (I) ##STR24## or which contains a polymer, the recurring structural units of which contain a group of the formula (I) or are linked through a bivalent group corresponding to the formula I, wherein R.sub.1 represents a free valency, and otherwise R represents hydrogen or methyl and R.sub.1 represents C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl, cyanomethyl, C.sub.3 -C.sub.8 alkenyl, C.sub.3 -C.sub.8 alkinyl, C.sub.7 -C.sub.12 aralkyl which is unsubstituted or substituted in the alkyl moiety by hydroxyl, or C.sub.1 -C.sub.8 alkanoyl or C.sub.3 -C.sub.5 alkenoyl.
- 3. A composition according to claim 1 which contains as component (b) a compound or a polymer which contains a group of the formula (I) wherein R is hydrogen and R.sub.1 represents C.sub.1 -C.sub.8 alkanoyl or C.sub.3 -C.sub.5 alkenoyl.
- 4. A composition according to claim 3, wherein R.sub.1 is acetyl.
- 5. A composition according to claim 2 which contains as component (b) a light stabilizer of the formula (II) ##STR25## wherein n is 1 to 4, R is hydrogen or methyl, R.sub.1 represents C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl, C.sub.3 -C.sub.8 alkenyl, C.sub.3 -C.sub.8 alkynyl, C.sub.7 -C.sub.12 aralkyl which is unsubstituted or substituted in the alkyl moiety by hydroxyl, or represents C.sub.1 -C.sub.8 alkanoyl or C.sub.3 -C.sub.5 alkenoyl, R.sub.2 if n is 1, represents hydrogen, C.sub.1 -C.sub.12 alkyl, cyanoethyl, glycidyl, benzyl, a monovalent radical of a saturated or unsaturated aliphatic, cycloaliphatic or aromatic carboxylic acid, carbamic acid or phosphorus-containing acid or a monovalent silyl radical, and if n is 2, represents C.sub.1 -C.sub.12 alkylene, C.sub.4 -C.sub.12 alkenylene, xylylene, a divalent radical of a saturated or unsaturated aliphatic, cycloaliphatic, araliphatic or aromatic dicarboxylic acid, dicarbamic acid or phosphorus-containing acid or a divalent silyl radical, and, if n is 3, represents a trivalent radical of an aliphatic, cycloaliphatic or aromatic tricarboxylic acid, of an aromatic tricarbamic acid or of a phosphorus-containing acid or a trivalent silyl radical, and, if n is 4, represents a quadrivalent radical of an aliphatic, cycloaliphatic or aromatic tetracarboxylic acid.
- 6. A composition according to claim 4 which contains as component (b) a light stabilizer of the formul (II), wherein n is 1 or 2, R is hydrogen or methyl, R.sub.1 is C.sub.1 -C.sub.12 alkyl, allyl, benzyl, acetyl, acryloyl, and R.sub.2 if n is 1, represents a radical of an aliphatic carboxylic acid of 2 to 18 carbon atoms, of a cycloaliphatic carboxylic acid of 5 to 12 carbon atoms or of an aromatic carboxylic acid of 7 to 15 carbon atoms, and if n is 2, represents a radical of an aliphatic dicarboxylic acid of 2 to 12 carbon atoms, of a cycloaliphatic or aromatic dicarboxylic acid of 8 to 14 carbon atoms, of an aliphatic, cycloaliphatic or aromatic dicarbamic acid of 8 to 14 carbon atoms.
- 7. A composition according to claim 2 which contains as component (b) a light stabilizer of the formula (III) ##STR26## wherein n is 1 or 2, R is hydrogen or methyl, R.sub.1 represents C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl, C.sub.3 -C.sub.8 alkenyl, C.sub.3 -C.sub.8 alkynyl, C.sub.7 -C.sub.12 aralkyl which is unsubstituted or substitued in the alkyl moiety by hydroxyl, or represents C.sub.1 -C.sub.8 alkanoyl or C.sub.3 -C.sub.5 alkenoyl, R.sub.3 represents C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.7 -C.sub.8 aralkyl, C.sub.2 -C.sub.18 alkanoyl, C.sub.3 -C.sub.5 alkenoyl, or benzoyl, and R.sub.4 if n is 1, represents C.sub.1 -C.sub.12 alkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.2 -C.sub.8 alkenyl which is unsubstituted or substituted by a cyano, carbonyl or carbamide group, glycidyl, a group of the formula --CH.sub.2 CH(OH)--Z or of the formula --CONH--Z, wherein Z is hydrogen, methyl or phenyl, and, if n is 2, represents C.sub.2 -C.sub.12 alkylene, C.sub.6 -C.sub.12 arylene, xylylene, a --CH.sub.2 --CH(OH)--CH.sub.2 group or a --CH.sub.2 --CH(OH)--CH.sub.2 --O--X--O--CH.sub.2 --CH(OH)--CH.sub.2 -- group, wherein X represents C.sub.2 -C.sub.10 alkylene, C.sub.6 -C.sub.15 arylene, C.sub.6-C.sub.12 -cycloalkylene, or, with the proviso that R.sub.3 does not represent alkanoyl, alkenoyl or benzoyl, R.sub.4 can also represent a divalent radical or an aliphatic, cycloaliphatic or aromatic dicarboxylic acid or dicarbamic acid, or R.sub.3 and R.sub.4 together, if n is 1, can be the cyclic radical of an aliphatic or aromatic 1,2- oder 1,3-dicarboxylic acid.
- 8. A composition according to claim 2 which contains as component (b) a light stabilizer of the formula (IV) ##STR27## wherein n is 1 or 2, R is hydrogen or methyl, R.sub.1 represents C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl, C.sub.3 -C.sub.8 alkenyl, C.sub.3 -C.sub.8 alkynyl, C.sub.7 -C.sub.12 aralkyl which is unsubstituted or substituted in the alkyl moiety by hydroxyl, or represents C.sub.1 -C.sub.8 alkanoyl or C.sub.3 -C.sub.5 alkenoyl, R.sub.5 if n is 1, represents C.sub.2 -C.sub.8 alkylene or hydroxyalkylene or C.sub.4 -C.sub.22 acyloxyalkylene, and if n is 2, represents the group (--CH.sub.2).sub.2 C(CH.sub.2 --).sub.2.
- 9. A composition according to claim 2 which contains as component (b) a light stabilizer of the formula (V) ##STR28## wherein n is 1 or 2, R is hydrogen or methyl, R.sub.1 represents C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl, C.sub.3 -C.sub.8 alkenyl, C.sub.3 -C.sub.8 alkynyl, C.sub.7 -C.sub.12 aralkyl which is unsubstituted or substituted in the alkyl moiety by hydroxyl, or represents C.sub.1 -C.sub.8 alkanoyl or C.sub.3 -C.sub.5 alkenoyl, R.sub.6 represents hydrogen, C.sub.1 -C.sub.12 alkyl, allyl, benzyl, glycidyl, C.sub.2 -C.sub.6 alkoxyalkyl, and R.sub.7 if n is 1, represents hydrogen, C.sub.1 -C.sub.12 alkyl, glycidyl, C.sub.3 -C.sub.5 alkenyl, C.sub.7 -C.sub.9 aralkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.2 -C.sub.4 hydroxyalkyl, C.sub.2 -C.sub.6 alkoxyalkyl, C.sub.6 -C.sub.10 aryl, and, if n is 2, represents C.sub.2 -C.sub.12 alkylene, C.sub.6 -C.sub.12 arylene or a group --CH.sub.2 CH(OZ')CH.sub.2 -- (OCH.sub.2 --CH(OZ')CH.sub.2).sub.2 --, wherein Z' represents hydrogen, C.sub.1 -C.sub.18 alkyl, allyl, benzyl, C.sub.2 -C.sub.12 alkanoyl or benzoyl.
- 10. A composition according to claim 2 which contains as component (b) a light stabilizer of the formula (VI) ##STR29## wherein n is 1 or 2 and R.sub.8 represents a group of the formula ##STR30## wherein R is hydrogen or methyl, R.sub.1 represents C.sub.1 -C.sub.18 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl, C.sub.3 -C.sub.8 alkenyl, C.sub.3 -C.sub.8 alknynyl, C.sub.7 -C.sub.12 aralkyl which is unsubstituted or substituted in the alkyl moiety by hydroxyl, or represents C.sub.1 -C.sub.8 alkanoyl or C.sub.3 -C.sub.5 alkenoyl, Y represents --O-- or NR.sub.11, A represents C.sub.2 -C.sub.6 alkylene, m is 0 or 1, R.sub.9 represents the groups R.sub.8, NR.sub.11 R.sub.12, --OR.sub.12, --NHCH.sub.2 OR.sub.13 or --N(CH.sub.2 OR.sub.13).sub.2, R.sub.10 if n is 1, represents the groups R.sub.8 or R.sub.9 and, if n is 2, represents the group --Y--Q--Y--, wherein Q represents C.sub.2 -C.sub.6 alkylene which is optionally interrupted by --N(R.sub.14)--, R.sub.11 represents C.sub.1 -C.sub.12 alkyl, cyclohexyl, benzyl or C.sub.1 -C.sub.4 hydroxyalkyl or a group of the formula ##STR31## R.sub.12 represents C.sub.1 -C.sub.12 alkyl, cyclohexyl, benzyl, C.sub.1 -C.sub.4 hydroxyalkyl, R.sub.13 represents hydrogen, C.sub.1 -C.sub.12 alkyl or phenyl, and R.sub.14 represents hydrogen or the group --CH.sub.2 OR.sub.13, or R.sub.11 and R.sub.12 together are C.sub.4 -C.sub.5 alkylene or oxaalkylene, or each of R.sub.11 and R.sub.12 also represents a group of the formula ##STR32##
- 11. A composition according to claim 1 which contains as component (b) a light stabilizer of the formula (VII) ##STR33## wherein n is 1 or 2, R represents hydrogen or methyl, and R.sub.20 if n is 1, represents C.sub.4 -C.sub.18 alkyl, C.sub.7 -C.sub.12 aralkyl, the group --CO--R.sub.15, C.sub.1 -C.sub.4 alkyl substituted by --CN, --COOR.sub.16, --OH, --OCOR.sub.17, or ##STR34## and R.sub.15 represents C.sub.1 -C.sub.12 alkyl, C.sub.2 -C.sub.4 alkenyl or phenyl, R.sub.16 represents C.sub.1 -C.sub.18 alkyl, R.sub.17 represents C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.10 alkenyl, cyclohexyl, benzyl or C.sub.6 -C.sub.10 aryl, or R.sub.20, if n is 2, represents C.sub.4 -C.sub.12 alkylene, 2-butenylene-1,4, xylylene, the groups --(CH.sub.2).sub.2 --OOC--R.sub.18 --COO--(CH.sub.2).sub.2 --, --CH.sub.2 --OOC--R.sub.19 --COO--CH.sub.2 -- or --CH.sub.2 --CH(OH)--CH.sub.2 --O--R.sub.18 --O--CH.sub.2 --CH(OH)--CH.sub.2 --, wherein R.sub.18 represents C.sub.2 -C.sub.10 alkylene, phenylene, cyclohexylene or 2,2-diphenylenepropane, and R.sub.19 represents C.sub.2 -C.sub.10 alkylene, xylylene or cyclohexylene.
- 12. A composition according to claim 2 which contains as component (b) a light stabilizer of the formula (VIII) ##STR35## wherein D is --N(R.sub.22)-- or --O--, E is C.sub.1 -C.sub.3 alkylene, the --CH.sub.2 --CH(R.sub.23)--O-- group, wherein R.sub.23 is hydrogen, methyl or phenyl, the --(CH.sub.2).sub.3 NH-- group or a single bond, R is hydrogen or methyl, R.sub.1 is C.sub.1 -C.sub.18 alkyl, C.sub.3 -C.sub.8 alkenyl, C.sub.3 -C.sub.8 alkynyl, C.sub.7 -C.sub.12 aralkyl, C.sub.1 -C.sub.8 alkanoyl, C.sub.3 -C.sub.5 alkenoyl, R.sub.21 is hydrogen or C.sub.1 -C.sub.18 alkyl,R.sub.22 is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.7 cycloalkyl, C.sub.7 -C.sub.12 aralkyl, cyanoethyl, C.sub.6 -C.sub.10 aryl, the --CH.sub.2 --CH(R.sub.23)--OH group, wherein R.sub.23 is as defined above, a group of the formula ##STR36## or a group of the formula ##STR37## wherein G can be C.sub.2 -C.sub.6 alkylene or C.sub.6 -C.sub.12 arylene, or R.sub.22 is a E--CO--NH--CH.sub.2 --OR.sub.21 group.
- 13. A composition according to claim 2, which contains as component (b) a polymeric compound as light stabilizer, the recurring structural units of which contain a group of the formula I or are linked through a bivalent group corresponding to the formula I, wherein R.sub.1 represents a free valency, and otherwise R and R.sub.1 have the meanings given in claim 2, in particular polyesters, polyethers, polyamides, polyamines, polyurethanes, polyureas, polyaminotriazines, poly(meth)acrylates, poly(meth)acrylamides and the copolymers thereof, which contain such radicals.
- 14. A composition according to claim 1, which contains as component (b) an acid addition salt of a N-substituted 2,2,6,6-tetraalkylpiperidine compound.
- 15. A composition according to claim 1, wherein the N-substituted 2,2,6,6-tetraalkylpiperidine compound of component (b) is contained in an amount of 0.1 to 5% by weight, based on the solvent-free binder (film-forming resin).
- 16. A composition according to claim 1 which contains as the UV absorber of component (c) a benzotriazole.
- 17. A composition according to claim 16 wherein the benzotriazole UV absorber is 2-[2-hydroxy-3,5-di(.alpha.,.alpha.-dimethylbenzyl)phenyl]-2H-benzotriazole, 2-(2-hydroxy-3,5-di-tert.-octylphenyl)-2H-benzotriazole, 2-(2-hydroxy-3-.alpha.,.alpha.-dimethylbenzyl-5-tert.-octylphenyl)-2H-benzotriazole, 2-(2-hydroxy-3-tert.-octyl-5-.alpha.,.alpha.-dimethylbenzylphenyl)-2H-benzotriazole, 2-(2-hydroxy-5-tert.-octylphenyl)-2H-benzotriazole, 2-(2-hydroxy-3,5-di-tert.-amylphenyl)-2H-benzotriazole, 5-chloro-2-[2-hydroxy-3,5-di(.alpha.,.alpha.-dimethylbenzyl)phenyl]-2H-benzotriazole, 5-chloro-2-(2-hydroxy-3,5-di-tert.-octylphenyl)-2H-benzothiazole, 5-chloro-2-(2-hydroxy-3-.alpha.,.alpha.-dimethylbenzyl-5-tert.-octylphenyl)-2H-benzotriazole, or 5-chloro-2-(2-hydroxy-3-tert.-octyl-5-.alpha.,.alpha.-dimethylbenzylphenyl)-2H-benzotriazole, 5-chloro-2-(2-hydroxy-5-tert.-octylphenyl)-2H-benzotriazole or 5-chloro-2-(2-hydroxy-3,5-di-tert.-amylphenyl)-2H-benzotriazole.
- 18. A composition according to claim 16 wherein the benzotriazole is 2-[2-hydroxy-3,5-di(.alpha.,.alpha.-dimethylbenzyl)phenyl]-2H-benzotriazole.
- 19. A composition according to claim 1 wherein the total amount of component (b) plus component (c) is 0.2 to 5% by weight based on the film-forming resin.
- 20. A composition according to claim 1 wherein the component (d) is neopentanetetrayl tetrakis(3,5-di-tert.-butyl-4-hydroxyhydrocinnamate).
- 21. A composition according according to claim 1 wherein component (d) is present in an amount of 0.05 to 2% by weight, based on the film-forming resin.
- 22. A composition according to claim 1, which is a lacquer of high solids content for industrial finishes.
- 23. A composition according to claim 1 which is a retouching lacquer for automobiles.
Priority Claims (1)
Number |
Date |
Country |
Kind |
6752/78 |
Jun 1978 |
CHX |
|
Parent Case Info
This application is a continuation-in-part of copending application Ser. No. 211,480, filed Nov. 28, 1980, now U.S. Pat. No. 4,344,876 which in turn is a continuation-in-part of application Ser. No. 047,407, filed June 11, 1979, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4315848 |
Dexter et al. |
Feb 1982 |
|
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
211480 |
Nov 1980 |
|
Parent |
47407 |
Jun 1979 |
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