| 摘要 |
Oligomeric or polymeric cpds. of formula (I), or corresp. crosslinked cpds., in which the units of formula -(SiXR<1>-O)- (Ia), -(SiHR<2>-O)- (Ib) and/or -(SiR<3>R<4>-O)- are in a statistical distribution or in blocks; n = 1-100; m = 0-100; p = 0-100; A = a gp. of formula -O-SiR<1>R<1>'R<1>"; B = -SiR<11>R<11>'R<11>"; or, if n + m + p = 3-10 and m + p = greater than 0, A + B = a direct bond; R<1> etc., R<11> etc., R<2>, R<3> = 1-18C alkyl, 5-12C cycloalkyl or Ph; R<4> = 1-18C alkyl, Ph, 2-6C hydroxy- or amino-alkyl, or a gp. of the following formulae (a), (b), (c), (d) (with r = 2-6 and s = 2 or 3); X = a mono- or di-valent gp. of formula (II), in which R<5>, R<7> = H, 1-12C alkyl,3-6C alkenyl, halogen or CN; R<6> = as for R<5>/R<7>, or also 5-12C satd. cycloaliphatic hydrocarbyl or Ph; or R<5> = OH, 1-18C alkoxy or 3-6C alkenyloxy, R<7> = H and R<6> = OH, 1-18C alkoxy, 3-6C alkenyloxy or -O-CH2-CH(OR<12>)-CH2-OR<17> (if monovalent) or -O-Z- (if divalent) with the O attached to the Ph ring; R<8> = a s for R<5>; R<9> = as for R<6>; R<10> = as for R<7>; R<12> = H or 1-18C alkyl; R<16> = H, 1-24C alkyl, 5-12C cycloalkyl or 7-15C phenylalkyl; R<17> = 1-18C alkyl; -O-Z- = a gp. of formula -O(CH2)q-O-R<21>- -O(CH2)q-O-Ar-R<22>-, -OCH2-CH(OR<12>)-CH2-O-(CH2)t-, -(CsH2s)-Cyc-O-, -OCO-(CH2)w-, -OCHR<12>-COO(CH2)w- or -O-(3-18C alkylene)-; Ar = phenylene; Cyc = 4-hydroxy-4-methyl-1,3-cyclohexylene; R<21> = 3-12C alkylene or cyclohexylene; R<22> = 2-12C alkylene; q = 2-4; t = 3-4; w = 3-12. Also claimed is (a) a cpd. obtd. by reacting an unsatd. precursor of the triazine gp. (X) with a SiH- contg. cpd. (cpd. (I) with X = H or with X = R<4> = H); (b) a compsn. contg. (A) organic material which is sensitive to degradation by light, oxidn. and/or heat and (B) an opt. crosslinked cpd. (I) as stabiliser; (c) a process for stabilising such material by the addn. of (I). |
