Rubber curing bladders having self release or low adhesion...

Details Rubber curing bladders having self release or low adhesion... Rubber curing bladders having self release or low adhesion...

C - Chemistry, Metallurgy

08

G

C08G 81/02 (2006.01) B29C 33/50 (2006.01) B29C 33/62 (2006.01) B29C 33/76 (2006.01) B29C 43/36 (2006.01) B60C 1/00 (2006.01) C08L 9/00 (2006.01) C08L 9/02 (2006.01) C08L 9/06 (2006.01) C08L 13/00 (2006.01) C08L 15/00 (2006.01) C08L 23/26 (2006.01) C08L 23/28 (2006.01) C08L 67/00 (2006.01) C08L 69/00 (2006.01) C08L 71/00 (2006.01)

Patent

CA 2146219

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 poly- butadiene, 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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