| 摘要 |
Unsaturated organo-tin mercaptides, useful as stabilisers for halogenated vinyl resins, are obtained by reacting x mols of a mercaptocarboxylic acid HSXCOOH with y1 mols of an alcohol HOYOH or mixture thereof with y2 mols of alcohol HOY'OH and/or y3 mols of alcohol ROH, where X is C1-4 alkylene or phenylene, Y is C1-10 alkylene or cycloaliphatic of five or six ring carbons, each with ethylenic and/or acetylenic bonds but not more than two of each type of bonds, Y' is C1-10 alkylene or cycloalkylene with five or six ring carbons, R is C1-8 alkyl or alkenyl, cycloalkyl or cycloalkenyl with five or six ring carbons, or phenyl (C1-4) alkyl, with x, y1, y2 and y3 having specified inter-relationships, to form an intermediate, and reacting the intermediate with a tin component, which is z1 mols of diorgano tin derivative R1 R2 SnO or R1 R2 SnCl2, or mixture thereof with z2 mols of mono-organo tin derivative which is a stannoic acid monomer or polymer (R1SnO1.5), R1SnCl3, R1Sn(OH)Cl2 or R1SN(OH)2Cl where R1 and R2 are C1-10 alkyl and x, z1 and z2 have specified interrelationships. |
