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US 6,274,753 B1Granted
Process for the preparation of sulfur- and phosphorus-containing organosilicon compounds
AssigneeDegussa AG
InventorsRoland Krafczyk, Jörg Münzenberg, Gerd Rainhard Zezulka
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Abstract
Process for the preparation of sulfur- and phosphorus-containing compounds of the formula: [R1n(R2O)3−n—Si—Alk—S—]3P═S in which halogen-containing silanes of the formula R1n(R2O)3−n—Si—Alk—Hal are reacted with phosphorus pentasulfide (P4S10) and a metal sulfide.
Claims6
A process for the preparation of a sulfur- and phosphorus-containing compound of the formula
- [R1n(R2O)3−n—Si—Alk—S—]3P═S,
- in which Alk denotes an alkylene group having 1 to 10 carbon atoms, R1, R2 denote an alkyl group having 1 to 5 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, a phenyl group, a benzyl group or a 2-methoxyethyl group, wherein R1 or R2 in each case can have identical or different meanings, and n=0, 1 or 2, comprising reacting a halogen-containing silane of the formula
- R1n(R2O)3−n—Si—Alk—Hal,
- in which Alk denotes an alkylene group having 1 to 10 carbon atoms, R1, R2 denote an alkyl group having 1 to 5 carbon atoms, a cycloalkyl group having 5 to 8 carbon atoms, a phenyl group, a benzyl group or a 2-methoxyethyl group, wherein R1 or R2 in each case can have identical or different meanings, Hal denotes a halogen and n=0, 1 or 2, with phosphorus pentasulfide (P4S10) and a metal sulfide.
1 more element
Dependencies are inferred from the claim text.