Rubber curing bladders having self release or low adhesion to cu

Details Rubber curing bladders having self release or low adhesion to cu Rubber curing bladders having self release or low adhesion to cu

1994-04-04

1995-01-31

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, 524 83, 525233, 526338, B29C 3500, B29D 3000, C08L 902

Patent

active

053854594

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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