Plastic article or earthenware shaping or treating: apparatus – Reshaping – resizing or vulcanizing means for tire – tire... – Internal mold – form or support for toroid
Patent
1996-03-28
1997-01-14
Buttner, David
Plastic article or earthenware shaping or treating: apparatus
Reshaping, resizing or vulcanizing means for tire, tire...
Internal mold, form or support for toroid
425 43, 264315, 525185, 525186, 525187, B29C 3500, B29D 3000, C08L 1500
Patent
active
055937012
ABSTRACT:
Hydrocarbon polymers with grafts of polyethers, polylactones, or polyesters from the reaction of phosgene with glycols having from 1 to 4 carbon atoms are disclosed as having good release properties or low adhesion to hydrocarbon rubber materials. The hydrocarbon backbone polymers include EPDM, hydrogenated polybutadiene, and hydrogenated poly(styrene-butadiene) all said polymers having pendant succinic anhydride groups or brominated p-methylstyrene-isobutylene copolymers. The above-referenced graft copolymers along with butadiene-acrylonitrile rubber or epichlorohydrin polymers or copolymers are described as useful polymers to make self-release curing bladders or sleeves for use in making molded articles such as pneumatic tires.
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A computer search through Dialog Information Services (15 entries).
A computer search through Chemical Abstracts (13 abstracts).
Appendix "A".
An article entitled "Extending the Life and Performance of Butyl Rubber Curing Bags," Lars c. Larsen, P. A. Danilowicz and C. T. Ruffing (McGreary), Journal of Elastomers and Plastics, vol. 22-Jul., 1990, pp. 190-198.
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An article entitled "New Isobutylene Polymers for Improved Tire Processing," J. V. Fusco, Exxon Chemical Company, Linden, N.J. 07036, presented Jan. 24, 1991, pp. 1-12 plus Tables 1-14 and Figures 1-7.
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Graves Daniel F.
Hergenrother William L.
Bridgestone Corporation
Buttner David
Hall Daniel N.
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