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
2005-04-26
2005-04-26
Reddick, Judy M. (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...
C524S447000, C524S492000, C524S493000, C525S326900, C525S327100, C525S328300, C525S332100, C525S332600
Reexamination Certificate
active
06884835
ABSTRACT:
This invention relates to a process for making a vulcanized rubber article comprising the steps of (1) kneading at a temperature within the range of about 70° C. to about 190° C. in a bulk thermomechanical mixer (a) an amino group containing rubbery polymer, wherein said amino group containing rubbery polymer contains from about 0.1 weight percent to about 20 weight percent monomer units containing an amino group, (b) from 0.1 to about 25 phr of an organophilic 2:1 layered silicate clay selected from the group consisting of montmorillonite clays, bentonite clays, hectorite clays, saponite clays, nontronite clays, beidellite clays, fluorohectorite clays, stevensite clays, volkonskoite clays, sauconite clays, and laponite clays, and (c) at least one conventional rubber compounding ingredient selected from the group consisting of curing agents, cure accelerators, cure activators, processing aids, reinforcing fillers, oils, cure retarders, resins, and antidegradants, to produce a mixed compound; (2) discharging the said mixed compound from the bulk thermomechanical mixer; (3) forming the mixed compound into an article; and (4) vulcanizing the article.
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Wang et al,Journal of Applied Polymer Science, “Preparation and Characterization of Rubber-Clay Nanocomposites”, vol. 78, Issue 11, 2000, pp. 1879-1883.
Ajbani Manoj
Castner Eric Sean
Halasa Adel Farhan
Hsu Wen-Liang
Lee Ginger
Reddick Judy M.
Rockhill Alvin T.
The Goodyear Tire & Rubber Company
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