Process for the preparation of diorganotin mercaptocarboxylates

Details Process for the preparation of diorganotin mercaptocarboxylates Process for the preparation of diorganotin mercaptocarboxylates

C - Chemistry, Metallurgy

07

F

C07F 7/22 (2006.01) C08K 5/58 (2006.01)

Patent

CA 2099320

Process for the preparation of diorganotin mercaptocarboxylates Abstract of the disclosure The invention relates to a process for the preparation of a pulverulent diorganotin mercaptocarboxylate, which comprises reacting a diorganotin oxide of the formula I, Image (I) in which R1 and R2, independently of one another, are C1-C18alkyl, at a temperature in the range from 35°C to 70°C in the absence of solvents and/or adsorbents with a mercaptocarboxylic acid of the formula II Image (II) in which R3 is alkylene having 1 to 18 C atoms or is phenylene, and subjecting the reaction mixture and product during the reaction and the subsequent cooling phase to constant thorough mixing. The process products are suitable for the stabilisation of chlorine-containing polymers against the damaging effect of light, oxygen and/or heat.

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