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US 2002/0002220 A1Published application
Sulfur-containing silane coupling agents
AssigneeCrompton Corporation
InventorsJAMES D. REEDY, HARTMAN W. KENNETH
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Abstract
A method is provided for preparing sulfur-containing silane coupling agents by reacting an alkoxysilane acetal with a sulfurating agent. The sulfur-containing silane coupling agents so prepared include certain novel mercapto silanes, and are useful in providing rubber tires with improved properties.
Claims16
A method for preparing a sulfur silane comprising reacting an alkoxysilane acetal with a sulfurating agent in the presence of a catalyst.
A silane selected from the group consisting of:
- [R1x(R2O)3-xSiRC(R3)2S]cR′Si(OR2)3-xR1x wherein R′ is a c+1 valent hydrocarbon and c=1 to 3;
- [R1x(R2O)3-xSiRC(R3)(OR2)S]2R;
- R1x(R2O)3-xSiRC(R3)2SRSH;
- [R1x(R2O)3-xSiRCR3(−)S(−)]q wherein q=>2, and
- R1x(R2O)3-xSiR-cyclo(C(R3)SRS—).
2 more elements
Dependencies are inferred from the claim text.