Process for preparation of thiocyanato-bearing...

Details Process for preparation of thiocyanato-bearing... Process for preparation of thiocyanato-bearing...

2005-03-15

2005-03-15

Barts, Samuel (Department: 1621)

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

Organic compounds

Silicon containing

C556S414000

Reexamination Certificate

active

06867319

ABSTRACT:
A process for the preparation of (D) thiocyanato-bearing organoalkoxysilanes represented by the general formula (3) NCS—R1—Si(OR2)nR33-nwherein R1is a divalent hydrocarbon group having 1 to 6 carbon atoms, R2and R3are monovalent hydrocarbon groups, and the subscript n has a value of from 0 to 3, in which (A) a thiocyanic acid salt represented by the general formula (1) MSCN, wherein M is an alkali metal and (B) a halogenated alkylalkoxysilane represented by the general formula (2) XR1Si(OR2)nR33-nwherein X is a halogen atom, and R1, R2, R3, and the subscript n are the same as above, are reacted in the presence of (C) a phase transfer catalyst.

REFERENCES:
patent: 6005129 (1999-12-01), Droge et al.

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