Machine element or mechanism – Gearing – Toothed gear and recirculated unconnected elements
Patent
1979-06-20
1980-06-03
Bell, James J.
Machine element or mechanism
Gearing
Toothed gear and recirculated unconnected elements
260 297H, 427381, 4273899, 427412, 428260, 428262, F16G 516
Patent
active
042055598
ABSTRACT:
An improved coating composition, coated reinforcement fabrics, reinforced rubber-based substrate products, and methods of manufacture thereof are disclosed. The coating composition comprises a carboxylated neoprene latex containing an aqueous dispersion of a copolymer of chloroprene and methacrylic acid, polyvinyl chloride as a colloidal stabilizer, and a high boiling oil derived largely from aromatic petroleum feedstocks through a distillation range of between about 195.degree. C. through 325.degree. C. The composition is highly stable, has a long shelf life, and is particularly suited for precoating textile reinforcement fabrics to provide a highly tacky uncured coating surface thereon having exceptionally long high tack in uncured, or green, state. The fabric is employed as a reinforcement layer or cover in rubber-based industrial products, such as power transmission belts, and may be applied in intimate physical adhesion therewith for subsequent vulcanization bonding thereto, as in a vulcanizing mold. The industrial products produced thereby exhibit long wear life with good cured adhesion between the reinforcement fabric and rubber substrate or core. The aromatic oil employed as a tackifier for the composition is present in an amount of between about 5 to 60 weight percent, based on the weight of the solids in the carboxylated neoprene component, and preferably between about 20-40 percent by weight. The composition contains a non-metallic oxide cross-linking agent for the vulcanizing cure reaction.
REFERENCES:
patent: 4062989 (1977-12-01), Long
patent: 4116159 (1978-09-01), Long
patent: 4116743 (1978-09-01), Davis
patent: 4141875 (1979-02-01), Brizzolara
Barnett Gary A.
High Glenda M.
Long Delmar D.
Bell James J.
M. Lowenstein Corporation
Manning, Jr,. Wellington M.
Wilburn, Jr. Luke J.
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