Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
1999-01-26
2002-04-09
Mulcahy, Peter D. (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S175000, C524S262000, C524S269000, C524S730000
Reexamination Certificate
active
06369144
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a compound which is useful in rubber compositions containing fillers and the processing of a rubber composition containing such fillers.
BACKGROUND OF THE INVENTION
GB 1,473,335 relates-organosilicon compounds for use as crosslinking agents, use as detergent-resistant additives for polishes, surface treatments for particulate materials including fillers a pigments and for plastics, metals, glass, natural and synthetic stone and as water-proofing and release agents. Such compounds contain either titanium or aluminum and at least one silicon atom.
EP 0 794 187 A1 relates to asymmetrical siloxy compounds which are useful in silica-filled rubber compositions. The asymmetrical siloxy compounds contain at least one sulfur and a metal such as Ti, Al or Zr.
SUMMARY OF THE INVENTION
The present invention relates to siloxy compounds of the formulae
wherein R
1
, R
2
and R
3
are independently selected from the group consisting of alkoxy radicals having from 1 to 8 carbon atoms; R
4
is selected from the group consisting of alkylene groups having from 1 to 15 carbon atoms and arylene and alkyl substituted arylene groups having from 6 to 10 carbon atoms; R
5
is selected from the group consisting of alkyl groups having from 1 to 15 carbon atoms, aryl and alkyl substituted aryl groups having 6 to 10 carbon atoms; x is 3 when M is Al and x is 4 when M is selected from the group consisting of C, Ti, Si and Zr.
REFERENCES:
patent: 5378790 (1995-01-01), Michalczyk
patent: 5912374 (1999-06-01), Agostini et al.
patent: 0794187 (1997-09-01), None
Ghatge et al, “New Silane Coupling Agents From Renewable Resources for Rubber Reinforcement,”Elastomerics, vol. 117, No. 1, Jan. 1985, p. 23-26, XP002106806, New York, NY.
Boury B et al, “Hybrid Xerogels from Dendrimers and Arborols,”Chemistry of Materials, vol. 10, No. 7, Jul. 1, 1998, pp. 1795-1804, XP000776656.
Hendricks Bruce J.
Mulcahy Peter D.
The Goodyear Tire & Rubber Company
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