Tire cure bladders cured with brominated phenolic resigns and co

Details Tire cure bladders cured with brominated phenolic resigns and co Tire cure bladders cured with brominated phenolic resigns and co

1998-03-16

2000-01-11

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

249 65, 264326, 425 43, 425 52, 524406, 524462, 524495, B29C 3500, C08F21008

Patent

active

060132183

ABSTRACT:
Expandable bladders for use in curing presses for hydrocarbon rubbers, such as pneumatic tires, are a crosslinked elastomer composition including isobutylene repeat units. When PTFE and/or graphite is present, they can be cured with brominated phenolic resins in shorter periods of time. The fluorinated ethylene polymer is added in particulate form and thereafter dispersed throughout the bladder. The fluorinated ethylene polymer may or may not form fibers. The bladders may further include graphite. The bladders generally have enhanced lubricity, reduced adhesion to cured tire innerliners, better resistance to cracking during flexing, and have lower tension set than similar compositions without fluorinated ethylene polymers. The above enhancements allow hydrocarbon rubbers such as tires to be molded with fewer defects caused by abraded or deformed bladders. They also enhance the useful life of the bladder reducing the cost of tire curing.

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Trade Literature from Exxon Chemical Company: Houston, Texas, apparently published OOct. 1, 1993, consisting of 68 printed pages including general fliers, specification sheets, and tire curing bladder recipes all related to Exxpro.TM. products.
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Technical Data Sheets SP1056 Flaked Resin from Schenectady International in Schenectady New York released on Oct. 15, 1996 (2-pages).

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