Novel organotin compounds, a process for their preparation, stabilizer compositions containing these compounds, compositions of a vinyl chloride-based polymer stabilized therewith and shaped articles comprising such a stabilized polymer

摘要

Novel organotin compounds of the formula:wherein q is 1 or 2; m is 1, 2 or 3; R, is an alkyl group having from 1 to 18 carbon atoms, a cycloalkyl group having from 3 to 6 carbon atoms, an aryl group, an aralkyl group, and alkaryl group having up to 30 carbon atoms, or a group of the formula:wherein R₇, R₈, R₉ and R₁₀ are each independently an alkyl group having from 1 to 18 carbon atoms, an oxygen-containing hydrocarbon group or a hydrogen atom, with the proviso that at least one of R₇ and R_e contains, adjacent to the HC grouping, a carbonyl group which forms part of an acid group, an ester group, and acid halide group, a ketone group or an aldehyde group; when q = 1, R₁, R₂, R_«, R₄ and R_s, are, each independently, a hydrogen atom, an alkyl or alkoxy group having from 1 to 14 carbon atoms, a cycloalkyl or cycloalkoxy group, having from 3 to 6 carbon atoms, a nitro group or a halogen atom; and when q = 2, m = 1, and the two structural units in the para position are interlinked directly or by way of an oxygen atom, a methylene group, an S0₂ group or an isopropylidene group, and R₁, R₂, R, and R_s are each as defined above, and a process for making the same.;The compounds may be formulated into stabilizer compositions and used to stabilize polyvinyl chlorides and polyvinylidene chloride against heat and light deterioration. They may be used with 2,4,6-trisubstituted phenolic antioxidants, and mono or di-alkyl or ester tin sulphides.