M&t Chemicals, Inc.

Jean W Bouchoux

William A Larkin

Hexaorgano distannanes of the general formula R.sub.3 Sn--SnR.sub.3 significantly reduce or eliminate the discoloration which occurs when mixtures containing an alkali metal salt of a lactam are stored under an inert atmosphere for extended periods of time at temperatures between ambient and 100.degree. C. R in the foregoing formula represents a monovalent hydrocarbon radical containing between 1 and 20 carbon atoms.

Polylactam composition containing hexaorgano distannane

Hexaorgano distannanes of the general formula R.sub.3 Sn-SnR.sub.3 significantly reduce or eliminate the discoloration which occurs when mixtures containing an alkali metal salt of a lactam are stored under an inert atmosphere for extended periods of time at temperatures between ambient and 100.degree.C. R in the foregoing formula represents a monovalent hydrocarbon radical containing between 1 and 20 carbon atoms.

Stabilized epsilon caprolactam composition and method for preparing same

Certain organotin halides can be recovered in substantially quantitative yield from their aqueous solutions by adding a non-reactive highly soluble inorganic salt to partially or completely saturate the solution and then heating the resultant solution as required to effect a separation of the organotin halide from the aqueous phase.

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Nutley, NJ, United States of America

Jean W Bouchoux