| 摘要 |
1,010,971. Laminates. GOODYEAR TIRE & RUBBER CO. April 19, 1963 [May 1, 1962], No. 15488/63. Heading B5N. The bonding between rubber or synthetic rubber and reinforcements, particularly cords or wires of rayon, nylon, polyester or steel, is improved by applying to the reinforcement an aldehyde/polyfunctional or other heat-reactive resin capable of being cross-linked by an aldehyde or other agent to a thermoset condition and incorporating in the rubber &c. a material having the cross-linking properties. The synthetic rubbers used may be polymers of butadiene, isoprene, 2-methyl-pentadiene-1,3, 2- methyl-pentadiene-2,4, or of piperilene, or butyl rubber, or butadiene-, styrene, or acrylonitrile copolymers, or stereo rubbers such as cis-1,4-polyisoprene or cis-1,4-polybutadiene. The resin used may be an aldehyde-deficient condensation product of a polyhydric or other phenol, or of urea or melamine, with an aldehyde such as formaldehyde, acrolein, glyoxal, furfural, crotonaldehyde, aldol, benzaldehyde, or with hexamethylene tetramine or hexamethoxy methyl melamine; suitable phenols being resorcinol, cresol, catechol, phloroglucinol, saligenin, beta- and dibeta-naphthol, xylenol, 4,6- and 2,5-dimethyl resorcinol, hydroquinone, furfuryl, alcohol, orcinol, pyrogallol, aminophenol, and guaiacol. The resin may contain a proportion of rubber latex. Alternatively a phenolic/aldehyde resin-blocked polyisocyanate (which yields the resin on heating) may be used, with or without rubber latex. In an example a polyester cord was passed through a composition made by adding an aldehydedeficient reaction product of resorcinol and formaldehyde to a latex of styrene/butadiene/ 1,3-vinylpyridine terpolymer and then adding a resorcinol/aldehyde reaction product which has been reacted with polymethylene polyphenylisocyanate (a mixture of isocyanates). The treated cord was embedded in a rubber mix comprising natural rubber with common compounding ingredients and containing also hexamethylene tetramine and resorcinol, and the rubber cured at 310‹ F. The products of the invention comprise tyres, machine and conveyer belts, and hose.
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