Ether containing siloxy compounds

Details Ether containing siloxy compounds Ether containing siloxy compounds

2000-07-11

2002-02-12

Shaver, Paul F. (Department: 1621)

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

Organic compounds

Silicon containing

C525S342000, C525S343000, C525S350000, C152S208000, C152S209100

Reexamination Certificate

active

06346637

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to ether containing siloxy compounds which may be used as silica couplers in rubber. The present invention also relates to a silica-filled rubber composition containing ether containing siloxy compounds and the processing of a sulfur-curable rubber composition containing silica and ether containing 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. Pat. 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 of the 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 ether containing siloxy compounds and their use in silica-filled rubber.


REFERENCES:
patent: 3218344 (1965-11-01), Bailey
patent: 3338870 (1967-08-01), Nitzsche et al.
patent: 3410820 (1968-11-01), Harrod
patent: 4379891 (1983-04-01), Haynes
patent: 4775415 (1988-10-01), Mohr
patent: 2159723 (1973-06-01), None
“New Silane Coupling Agents from Renewable Resources for Rubber Reinforcement” by N. D. Ghatge and R. S. Khisti as published byElastomerics, Jan. 1985, vol. 117, No. 1, pp. 23-26, XP002106806.

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