Continuous process for the preparation of alkyltin thiocarboxyli

Details Continuous process for the preparation of alkyltin thiocarboxyli Continuous process for the preparation of alkyltin thiocarboxyli

1982-12-01

1985-11-19

Sneed, Helen M. S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C07F 722

Patent

active

045543682

ABSTRACT:
A process for the production of alkyltin thiocarboxylic acid esters from alkyltin halides and thiocarboxylic acid esters in the presence of an acid acceptor, which process comprises carrying out the reaction continuously in a reaction system comprising 1 to 5 agitator vessels with an average dwell time of 1 to 60 minutes, at a constant pH value in the range from 3 to 8, and in a temperature range from 40.degree. to 80.degree. C. and separating the product drawn off from the reaction system from the aqueous phase and subsequently drying it.
The alkyltin thiocarboxylic acid esters obtained by the process of the invention are used for stabilizing homo- and copolymers of vinyl chloride.

REFERENCES:
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patent: 2832751 (1958-04-01), Weinberg et al.
patent: 2870119 (1959-01-01), Leistner et al.
patent: 3660442 (1972-05-01), Ludwig
patent: 4104292 (1978-08-01), Dworkin et al.
patent: 4193913 (1980-03-01), Abeler
patent: 4292252 (1981-09-01), Collins et al.

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