Process for making organotin dihalides and trihalides and stabil

Details Process for making organotin dihalides and trihalides and stabil Process for making organotin dihalides and trihalides and stabil

1976-02-23

1978-03-21

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4575H, 260 4575T, 2604109R, 260414, 2604297, C07F 722, C08K 558

Patent

active

040803635

ABSTRACT:
An organotin dihalide having the formula ##STR1## OR A MIXTURE OF THE DIHALIDE AND AN ORGANOTIN TRIHALIDE IS PREPARED BY REACTING METALLIC TIN WITH AN OLEFIN HAVING THE FORMULA ##STR2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are hydrogen or a hydrocarbon radical and at least one of R.sub.1 or R.sub.2 contains an oxygen-containing group with a carbonyl group adjacent to the olefinic double bond and Hal is a halogen. The organotin dihalide or mixture thereof with a trihalide is reacted with an acid or mercaptan to produce a stabilizer for polyvinyl chloride polymers and the like.

REFERENCES:
patent: 2731484 (1956-01-01), Best
patent: 3188331 (1965-06-01), Weissenberger
patent: 3705919 (1972-12-01), Heck
Kagaku (Kyoto) 26 137-141 (1971).
J. Organometallic Chemistry, 25 101-109 (1970).

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