Wood protecting paint

摘要

A process for protecting wooden surfaces from damage by light comprises treatment with a coating compsn. contg. a benzophenone of formula (I), where i = 1-4; if i = 1, L = H, 1-20C alkyl, 2-20C alkyl substd. with one or two OH or with COOH, 1-12C alkoxy, OPh, 2-20C alkylcarbonyl, 3-20C alkenylcarbonyl, 2-20C alkanoyloxy, 3-20C alkenoyloxy or Ph, glycidyl, 4-20C alkyl with 1-6 in-chain O atoms or 1 or 2 in-chain carbonyloxy or oxycarbonyl gps., 2-18C alkenyl or alkanoyl, 3-18C alkenoyl, -COPh (opt. substd. with 1 or 1-4C alkyl gps.), opt. substd. Ph or naphthyl, or a gp. of formula -(CH2)j-CH(OH)-(CH2)k-OR9 (II), -(CH2)m-COOR9 (III) or gp. of formula (IV) -(VI); j, k = 0-4; m = 1-4; R9 = 1-18C alkyl or Ph; a, b, c = 0-50; A = R7 or -O-Si(R7)3 (with R7 = 1-12C alkyl, 1-4C alkoxy, cyclohexyl or Ph); E1 = OH, 1-12C alkyl, 1-4C alkoxy, cyclohexyl, Ph or -O-Si(R7)3; E2 = H, 1-12C alkyl, cyclohexyl, Ph, -Si(R7)3 or -Si(R6)(R7)2; or E1 + E2 = direct bond; R6 = a gp. of formula (VII); L1 = direct bond, -CnH2n-, -(CH2)n-O-, -CH2CHOHCH2O- or -CH2CHOHCH2O(CH2)3- (with n = 1-4); R8 = 1-18C alkyl, 1-4C alkoxy, 5-7C cycloalkyl or Ph; x = 0, 1 or 2; R1 = 1-12C alkyl or 5-8C cycloalkyl; R1' = sec. or tert. 3-12C alkyl or 5-8C cycloalkyl; L2 = the meaning of L when i = 2; R3' = H or 1-18C alkyl; if i = 2, L = 1-12C alkylene, 3-12C alkylene substd. with OH, 1-8C alkoxy, 2-20C alkoxycarbonyl or alkanoyloxy, 3-20C alkenoyloxy or silyl gp. (IV), 4-20C alkylene with 1-6 in-chin O atoms or gps. as above, o-, m- or -xylylene, phthaloyl, iso- or tere-phthaloyl, or alpha,omega-4-12C alkanediyl; if i = 3, L = 3-12C alkane-triyl or -trioyl, trimellitoyl, or 6-20C alkanetriyl with 3 in-chain -COO- or -OCO- gps.; if i = 4, L = 4-16C alkane-tetrayl or -tetraoyl, pyromellitoyl, or 8-24C alkanetetrayl with 4 in-chain -COO- or -OCO- gps.; R2 = H, 1-18C alkyl or Cl; R3 = H, Cl, OMe, -SR10, -SOR10 or -SO2R10; R4 = H, OH, 1-18C alkyl or 2-18C alkenyl; R5 = H, Cl or -OL (with L as for when i = 1); R10 = 1-20C alkyl, 2-20C alkyl substd. with OH, 1-12C alkoxy, silyl gp. (IV), 2-12C alkanoyloxy, 3-12C alkenoyloxy or halo, 3-18C alkenyl, 5-12C cycloalkyl, 7-15C phenylalkyl, 6-10C aryl (opt. substd. with 1 or 2 1-4C alkyl), or 1,1,2,2-tetrahydroperfluoro-(6-16C alkyl); if i = 1, at least one of the gps. R2, R3 and R5 is other than H and R3 is not OMe if R2 = R5 = H and L = Me. Also claimed are a protective coating compsn. for wood contg. cpd(s). (I); and benzophenones of formula (I) per se.