Unsaturated siloxy compounds

Details Unsaturated siloxy compounds Unsaturated siloxy compounds

2000-07-11

2002-03-05

Mulcahy, Peter D. (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S262000, C524S445000, C524S450000

Reexamination Certificate

active

06353045

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to unsaturated siloxy compounds which may be used as silica couplers in rubber. The present invention also relates to a silica-filled rubber composition containing unsaturated siloxy compounds and the processing of a sulfur-curable rubber composition containing silica and unsaturated siloxy compounds.
BACKGROUND OF THE INVENTION
Sulfur containing organosilicon compounds are useful as reactive coupling agents between rubber and silica fillers providing for improved physical properties. They are also useful as adhesion primers for glass, metals and other substrates.
U.S. Patent Nos. 3,842,111, 3,873,489 and 3,978,103 disclose the preparation of various sulfur containing organosilicon compounds. These organosilicon compounds are prepared by reacting
(a) 2 moles of a compound formula
Z-Alk-hal
where hal is a chlorine, bromine or iodine; Z is
where R
1
is an alkyl of 1 to 4 carbon atoms or phenyl and R
2
is alkoxy of 1 to 8 carbon atoms; or cycloalkoxy of 5 to 8 carbon atoms; or alkylmercapto with 1 to 8 carbon atoms; Alk is a divalent aliphatic hydrocarbon or unsaturated hydrocarbon or a cyclic hydrocarbon containing 1 to 18 carbon atoms; with
(b) 1 mole of a compound of the formula
Me
2
S
n
where Me is ammonium or a metal atom and n is a whole number from 2 to 6.
SUMMARY OF THE INVENTION
The present invention relates to unsaturated siloxy compounds that do not contain sulfur.


REFERENCES:
patent: 3664403 (1972-05-01), Doran et al.
patent: 0478154 (1992-04-01), None
“C-C Bond Activatioin of Cyclopropane Ring in Hydrosilylation Catalyzed by Wilkinson Complex” by Alla G. Bessmertnykh, et al., published byTetrahedron Letters, vol. 36, No. 43, pp. 7901 through 7904. Abstract No. XP002151025.
“Hybrid Xerogels from Dendrimers and Arborols” by Bruno Boury, et al. in Chemistry of Materials, U.S.American Chemical Society, vol. 10, No. 7, pp. 1795 through 1804. Abstract No. XP-000776656.
“Sol-gel Process: Influence of the Temperature on the Textural Properties of Organosilsesquioxane Materials” by Genevieve Cerveau, et al., inThe Royal Society of Chemistry, 2000, vol. 10, No. 7, pp. 1617 through 1622. Abstract No. XP-000957501.

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