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...
Reexamination Certificate
2001-02-27
2002-09-10
Seidleck, James J. (Department: 1711)
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...
C524S493000, C524S494000, C523S210000, C152S905000
Reexamination Certificate
active
06448325
ABSTRACT:
BACKGROUND OF THE INVENTION
A pneumatic tire is a polymeric composite and is a complex system of interacting components, each with specific properties for maximum effectiveness. One of the more important components of a tire is the tread. Since the tread of a tire comes into contact with the road, it is particularly compounded for abrasion and tear resistance. For example, abrasion resistance can correlate to tread wear and tear resistance can correlate to the tread's ability to resist chunking or tearing of the ground contacting tread elements. With the ever present need to improve the performance of tires, there is a continuous need for a rubber composition which improves both abrasion resistance and tear values. One current approach to this problem is the use of silica filler in the tread compounds. Unfortunately, the rubber environment and silica are very dissimilar and there needs to be improved methods to compatibilize this interface to yield better properties.
SUMMARY OF THE INVENTION
The present invention relates to a rubber composition particularly suited for the tread of a pneumatic tire. The rubber comprises 100 parts by weight of at least one rubber containing olefinic unsaturation; and from 1 to 150 phr of a silica having dispersed thereon a liquid epoxidized butadiene polymer having a number average molecular weight of from 500 to 10,000.
REFERENCES:
patent: 3622650 (1971-11-01), Berstein et al.
patent: 4036906 (1977-07-01), Finelli
patent: 4179421 (1979-12-01), Edwards et al.
patent: 4357432 (1982-11-01), Edwards
patent: 4668733 (1987-05-01), Anzinger et al.
patent: 4829115 (1989-05-01), Cottman
patent: 4992513 (1991-02-01), Bauer et al.
patent: 0292232 (1988-11-01), None
patent: 0644235 (1995-03-01), None
patent: 292066 (1998-11-01), None
Japanese Abstract XP-002168545.
“Organic Polymer-Surface Modified Precipitated Silica” by W. H. Waddell et al., as published in theJournal of Applied Polymer Science, 55, Mar. 21, 1995, No. 12. pp. 1627 through 1641.
European Search Report.
Agostini Giorgio
Edme Materne Thierry Florent
Visel Friedrich
DeLong John D.
Hendricks Bruce J.
Rajguru U. K
Seidleck James J.
The Goodyear Tire & Rubber Company
LandOfFree
Rubber composition containing a silica coated with a liquid... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rubber composition containing a silica coated with a liquid..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rubber composition containing a silica coated with a liquid... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2908485