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AssigneeM. Lowenstein Corporation
InventorsDelmar D. Long, Gary A. Barnett, Glenda M. High
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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.
An adhesive composition for coating textile reinforcement fabrics to provide improved long open green tack shelf life of the coated fabrics in uncured form and to provide good adhesion of the fabrics to a rubber substrate in subsequent vulcanization therewith, comprising, in combination:
A method of producing a textile reinforcement fabric for rubber substrate-containing products having increased shelf life in uncured, high green tack state and good adhesion of the fabric to the rubber substrate during a vulcanizing operation, comprising the steps of:
A coated textile reinforcement fabric for rubber substrate-containing products having improved long green tack shelf life in uncured form and good adhesion to a rubber substrate in a subsequent heat curing operation therewith, comprising a textile fabric construction having at least one surface thereof coated with a dry, uncured coating composition comprising a carboxylated neoprene resin and a high boiling aromatic oil derived largely from aromatic petroleum feed stocks over a distillation range of from about 195.degree. through about 325.degree. C.
A method of manufacturing a power belt having a reinforced fabric covering adhesively secured to a rubber core of the belt comprising the steps of:
A power transmission belt having a central rubber core, and a reinforced fabric covering thereabout, said fabric covering having a coating on the surface thereof in engagement with the rubber core comprising a carboxylated neoprene resin and from about 5 to 60 percent, based on the weight of the neoprene resin, of a high boiling aromatic oil derived from aromatic petroleum feedstocks by distillation through a range of from about 195.degree. through 325.degree. C.
Dependencies are inferred from the claim text.