Patent ID: 6187387
Filing Date: 2001-02-13
Classification: B27K,C08L,C09D

Abstract:
A method of protecting wood against light-induced degradation by treatment with a stain or impregnation which penetrates the surface of the wood comprisinga) at least one organic solvent, andb) a hindered amine compound which is(a) bis(1-oxyl-2,2-6-6-tetramethylpiperidin-4-yl) sebacate;(b) bis(1-hydroxy-2,2-6-6-tetramethylpiperidin-4-yl) sebacate;(c) 1-hydroxy-2,2-6-6-tetramethyl-4-acetoxypiperidinium citrate;(d) 1-oxyl-2,2,6,6-tetramethyl-4-acetamidopiperidine;(e) 1-hydroxy-2,2,6,6-tetramethyl-4-acetamidopiperidine;(f) 1-hydroxy-2,2,6,6-tetramethyl-4-acetamidopiperidinium bisulfate;(g) 1-oxyl-2,2,6,6-tetramethyl-4-oxo-piperidine;(h) 1-hydroxy -2,2,6,6-tetramethyl-4-oxo-piperidine;(i) 1-hydroxy -2,2,6,6-tetramethyl-4-oxo-piperidinium acetate;(j) 1-oxyl-2,2,6,6-tetramethyl-4-methoxy-piperidine;(k) 1-hydroxy-2,2,6,6-tetramethyl-4-methoxy-piperidine;(l) 1-hydroxyl-2,2,6,6-tetramethyl-4-methoxy-piperidinium acetate;(m) 1-oxyl-2,2,6,6-tetramethyl-4-acetoxypiperidine;(n) 1-hydroxy-2,2,6,6-tetramethyl-4-acetoxypiperidine;(o) 1-oxyl-2,2,6,6-tetramethyl-4-propoxy-piperidine;(p) 1-hydroxy-2,2,6,6-tetramethyl-4-propoxy-piperidinium acetate;(q) 1-hydroxy-2,2,6,6-tetramethyl-4-propoxy-piperidine;(r) 1-oxyl-2,2,6,6-tetramethyl-4-(2-hydroxy-4-oxapentoxy)piperidine;(s) 1-hydroxy-2,2,6,6-tetramethyl-4-(2-hydroxy-4-oxapentoxy)piperidinium acetate;(t) 1-oxyl-2,2,6,6-tetramethyl-4-hydroxypiperidine;(u) 1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidine;(v) 1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium chloride;(w) 1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium acetate;(x) 1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium bisulfate;(y) 1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium citrate;(z) bis(1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium) citrate;(aa) tris(1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium) citrate;(bb) tetra(1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium) ethylenediaminetetraacetate;(cc) tetra(1-hydroxy-2,2,6,6-tetramethyl-4-acetamidopiperidinium) ethylenediaminetetraacetate;(dd) tetra(1-hydroxy-2,2,6,6-tetramethyl-4-oxopiperidinium) ethylenediaminetetraacetate;(ee) penta(1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium) diethylenetriaminepentaacetate;(ff) penta(1-hydroxy-2,2,6,6-tetramethyl-4-acetamidopiperidinium) diethylenetriaminepentaacetate;(gg) penta(1-hydroxy-2,2,6,6-tetramethyl-4-oxopiperidinium) diethylenetriaminepentaacetate;(hh) tri(1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium) nitrilotriacetate;(ii) tri(1-hydroxy-2,2,6,6-tetramethyl-4-acetamidopiperidinium) nitrilotriacetate;jj) tri(1-hydroxy-2,2,6,6-tetramethyl-4-oxopiperidinium) nitrilotriacetate;(kk) penta(1-hydroxy-2,2,6,6-tetramethyl-4-hydroxypiperidinium) diethylenetriaminepentamethylenephosphonate;(ll) penta(1-hydroxy-2,2,6,6-tetramethyl-4-acetamidopiperidinium) diethylenetriaminepentamethylenephosphonate; or(mm) penta(1-hydroxy-2,2,6,6-tetramethyl-4-oxopiperidinium) diethylenetriaminepentamethylenephosphonate.