NEW TIN COMPOUNDS AND USE THEREOF

摘要

1343271 Organotin compounds IMPERIAL CHEMICAL INDUSTIES Ltd 14 May 1971 (1 June 1970] 26321/70 Heading C2J [Also in Divisions B2 C3 and B5] Organotin compounds of general formula YO(R 2 SnO)m-R6NR4R5 where R is C 1-20 alkyl, Y is R1R2C=N- or R3CO- where R2 is hydrocarbyl and R1 and R3 are H or hydrocarbyl, R4 and R5 are H, alkyl, cycloalkyl, or aminoalkyl or each consist of alkylene and alkyl groups joined by one or more >NR7 groups or O atoms or together form a single alkylene or a number of alkylenes joined as before, R7 being H or C 1-5 alkyl, R 6 is alkylene or a number of alkylenes joined as before, the essential N atom in the -R6NR4R5 group not being bonded to the α C atom of R6, and m is 1 to 4, are prepared by one of the following methods: (a) by reacting an organotin oxide with an oxime or carboxylic acid in an organic solvent and reacting the product with an aminoalcohol; (b) by reacting an organotin oxide with an aminoalcohol and then with an organotin acylate; or (c) by reacting an organotin oxide with a low boiling alcohol, then with an aminoalcohol and finally with an organotin acylate. Numerous compounds are specified, Y being particularly benzaldoximo or acetoxy and the O-R6NR4R5 group being particularly 1-(2-aminoethylamino)- propan-2-oxy, -OCH(CH 3 )CH 2 (NHCH 2 CH 2 ) 4 - NH 2 , -OCH 2 CH 2 (NHCH 2 CH 2 ) 4 NH 2 , -OCH (CH 3 )CH 2 (NHCH 2 CH 2 ) 2 NH 2 , -OCH 2 CH 2 NH 2 , -OCH 2 CH(NH 2 )CH 2 CH 3 or -OC 2 H 4 N(CH 3 ) 2 . The compounds are used as curing catalysts for organopolysiloxanes.