Patent ID: 6103794
Filing Date: 2000-08-15
Classification: C08K,C09D

Abstract:
A powder coating composition, which comprisesa) an organic film-forming binder which is an epoxy resin, a polyester-hydroxyalkylamide, a polyester-glycoluril, an epoxy-polyester resin, a polyester-triglycidylisocyanurate, a hydroxy-functional polyester-blocked polyisocyanate, a hydroxy-functional polyester-uretdione, an acrylate resin with hardener or a mixture of such resins, andb) as stabiliser at least one compound of formula I ##STR140## wherein, if n=1, R.sub.1 is hydrogen, ##STR141## and if n=2, R.sub.1 is ##STR142## A is a direct bond, sulfur, ##STR143## X.sub.1 is a direct bond, C.sub.1 -C.sub.24 alkylene; C.sub.2 -C.sub.24 alkylene which is interrupted by oxygen, sulfur or ##STR144## C.sub.2 -C.sub.24 alkenylene, C.sub.2 -C.sub.20 alkylidene, C.sub.7 -C.sub.20 phenylalkylidene, C.sub.5 -C.sub.12 cycloalkylene, C.sub.5 -C.sub.12 cycloalkenylene, C.sub.7 -C.sub.8 bicycloalkylene, unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted phenylene, ##STR145## X.sub.2 is C.sub.1 -C.sub.24 alkylene; C.sub.2 -C.sub.24 alkylene which is interrupted by oxygen, sulfur or ##STR146## C.sub.2 -C.sub.24 alkenylene, C.sub.2 -C.sub.20 alkylidene, C.sub.7 -C.sub.20 phenylalkylidene, C.sub.5 -C.sub.12 cycloalkylene, C.sub.5 -C.sub.12 cycloalkenylene, C.sub.7 -C.sub.8 bicycloalkylene, unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted phenylene, ##STR147## X.sub.3 is C.sub.1 -C.sub.24 alkylene, C.sub.2 -C.sub.20 alkylidene, C.sub.7 -C.sub.20 phenylalkylidene or C.sub.5 -C.sub.12 cycloalkylene,Y is a direct bond, C.sub.1 -C.sub.24 alkylene; C.sub.2 -C.sub.24 alkylene which is interrupted by oxygen, sulfur or ##STR148## C.sub.2 -C.sub.24 alkenylene, C.sub.2 -C.sub.20 alkylidene, C.sub.7 -C.sub.20 phenylalkylidene, C.sub.6 -C.sub.12 cycloalkylene, C.sub.5 -C.sub.12 cycloalkenylene, C.sub.7 -C.sub.8 bicycloalkylene, unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted phenylene, ##STR149## R.sub.2 and R.sub.3 are each independently of the other C.sub.1 -C.sub.25 alkyl, unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.12 cycloalkyl; C.sub.7 -C.sub.9 phenylalkyl, unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted phenyl;R.sub.4 is hydrogen or methyl,R.sub.5 is C.sub.1 -C.sub.25 alkyl; C.sub.2 -C.sub.25 alkyl which is interrupted by oxygen, sulfur or ##STR150## C.sub.2 -C.sub.24 alkenyl; C.sub.8 -C.sub.30 phenylalkenyl which is unsubstituted or substituted at the phenyl ring by halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkylthio; unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.12 cycloalkyl; C.sub.8 -C.sub.30 phenylalkyl which is unsubstituted or substituted at the phenyl ring by halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkylthio; phenyl which is unsubstituted or substituted by halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkylthio:; ##STR151## R.sub.6 is C.sub.1 -C.sub.2 alkyl; C.sub.2 -C.sub.25 alkyl which is interrupted by oxygen, sulfur or ##STR152## C.sub.2 -C.sub.24 alkenyl, unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.12 cycloalkyl; C.sub.7 -C.sub.9 phenylalkyl; phenyl which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkylthio;R.sub.7 is C.sub.1 -C.sub.25 alkyl; C.sub.2 -C.sub.25 alkyl which is interrupted by oxygen, sulfur or ##STR153## C.sub.2 -C.sub.24 alkenyl; C.sub.8 -C.sub.30 phenylalkenyl which is unsubstituted or substituted at the phenyl ring by halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkylthio; unsubstituted or C.sub.1 -C.sub.4 alkyl-substituted C.sub.5 -C.sub.12 cycloalkyl; C.sub.9 -C.sub.30 phenylalkyl which is unsubstituted or substituted at the phenyl ring by halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkylthio; phenyl which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkylthio;R.sub.8 is C.sub.1 -C.sub.25 alkyl,R.sub.9 and R.sub.10 are each independently of the other hydrogen, CF.sub.3, C.sub.1 -C.sub.25 alkyl or phenyl, or R.sub.9 and R.sub.10, together with the linking carbon atom, are a C.sub.5 -C.sub.12 cycloalkylidene ring which is unsubstituted or substituted by 1 to 3 C.sub.1 -C.sub.4 alkyl;R.sub.11 is hydrogen or C.sub.1 -C.sub.18 alkyl,R.sub.12 is hydrogen or C.sub.1 -C.sub.4 alkyl,R.sub.13 is hydrogen or C.sub.1 -C.sub.4 alkyl,Z is oxygen, methylene, ethylidene or ##STR154## and n is 1 or 2.