 Laser heater assembly |
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| Magnetic recording medium with dual layer front coating and method of manufacture |
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| Magnetic recording medium |
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| Fuel cell system and control method of the same |
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| Ceramic-metal brazed joint for turbochargers |
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| Ti-Al type lightweight heat-resistant materials containing Nb, Cr and Si |
| OF THE PREFERRED EMBODIMENTS Next, reasons for the limitation of the content (% by weight) of each ... |
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| Method for joining ceramic to metal |
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Soft gel compositions for hot adhesion
| Details |
Inventors: Wang, Xiaorong; Foltz, Victor; Hall, James E.;
Assignee: Bridgestone Corporation (Tokyo, JP)
Primary Examiner: Wu; David W.
Assistant Examiner: Lee; Rip A.
Attorney, Agent or Firm: Reginelli; Arthur M. Palmer; Meredith E.
A gel composition that is the combination of or reaction product of ingredients comprising a thermoplastic elastomer copolymer, a functionalized polyolefin, an extender, and optionally a fatty acid. |
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DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS The gel compositions include a blend of a thermoplastic elastomer copolymer, a functionalized polyolefin, an extender, and, optionally, a fatty acid.
These compositions are soft and thermoreversible gels that have been found to exhibit good hot adhesion to metal and plastic substrates.
Useful thermoplastic elastomer copolymers include, but are not limited to, styrene/butadiene rubber (SBR), styrene/isoprene rubber (SIR), styrene/isoprene/butadiene rubber (SIBR), styrene-butadiene-styrene block copolymer (SBS), hydrogenated styrene-butadiene-styrene block copolymer (SEBS), hydrogenated styrene-butadiene block copolymer (SEB), styrene-isoprene-styrene block copolymer (SIS), styrene-isoprene block copolymer (SI), hydrogenated styrene-isoprene block copolymer (SEP), hydrogenated styrene-isoprene-styrene block copolymer (SEPS), styrene-ethylene/butylene-ethylene block copolymer (SEBE), styrene-ethylene-styrene block copolymer (SES), ethylene-ethylene/butylene block copolymer (EEB), ethylene-ethylene/butylene/styrene block copolymer (hydrogenated BR-SBR block copolymer), styrene-ethylene/butylene-ethylene block copolymer (SEBE), ethylene-ethylene/butylene-ethylene block copolymer (EEBE) and mixtures thereof.
Preferred copolymers include hydrogenated styrene-butadiene-styrene block copolymer (SEBS) and hydrogenated styrene-isoprene-styrene block copolymer (SEPS).
The preferred copolymers are commercially available under the tradename SEPTON (Kuraray; New York, N.
Y.
).
A hydrogenated block copolymer can be obtained by hydrogenating a block copolymer that includes at least two polymer blocks A composed mainly of a vinyl-substituted aromatic hydrocarbon and at least one polymer block B composed mainly of a conjugated diene, where "composed mainly of" refers to a plurality of the mer units of the polymer or segment resulting from the polymerization of the indicated monomer.
The hydrogenated block copolymer can have a polymer structure represented by such formulae as, for example, (A-B-)
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Manufacturing Materials 
