Use of tin derivatives as catalysts

Details Use of tin derivatives as catalysts Use of tin derivatives as catalysts

2006-10-03

2006-10-03

Silverman, Stanley S. (Department: 1754)

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

Organic compounds

Carboxylic acid esters

C502S150000, C502S152000, C502S171000, C502S174000, C502S216000, C502S224000, C502S227000, C502S200000, C252S182120

Reexamination Certificate

active

07115770

ABSTRACT:
The invention concerns the use as catalyst for transforming carbamates of compounds corresponding to the general formula (I): —Sn (X) (X′) wherein: X′ is selected among chloride, bromide, iodide, thiocyanate radicals, sulphonate radicals, advantageously perfluorinated on the carbon bearing the sulphonate function; X is selected among the values of X′ and among radicals of formula Y-Z; Y is selected among the chalcogen groups, advantageously light (that is oxygen and sulphur); Z is selected in the group consisting of trisubstituted tin, monosubstituted zinc, and the oxygenated acid radicals after ignoring the OH function. The invention is applicable to the coating industry.

REFERENCES:
patent: 4268683 (1981-05-01), Gurgiolo
patent: 6010976 (2000-01-01), Ryu
patent: 6133473 (2000-10-01), Berrier
patent: 6998364 (2006-02-01), Bernard et al.
patent: 43 17 428 (1994-06-01), None
patent: 197 56 748 (1999-07-01), None

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