Tacky Finish and Textile Materials and Articles Treated Therewith

Abstract

This invention relates to tacky finishes and to the textile materials and articles treated with the tacky finishes. The tacky finishes provide improved processing features for end-use articles that contain such finishes. The tacky finish may be combined with other adhesion promotion finishes in the treatment of textile materials. The textile materials and articles may be used as rubber reinforcing materials, such as automotive tire cap ply, single end tire cord, carcass reinforcement and side wall reinforcement. End-use articles that contain the treated textile materials include rubber-containing materials such as automobile tires, belts, and hoses. This invention also relates to the methods for manufacturing the treated textile materials and articles.

We claim: 
     
         1 . A cap ply comprising:
 a) a textile substrate having a tacky finish, said tacky finish comprising
 (i) at least one tacky resin; 
 (ii) at least one unvulcanized rubber; and 
 (iii) at least one adhesion promoter. 
   
     
     
         2 . The cap ply of  claim 1 , wherein the at least one tacky finish further includes at least one solvent. 
     
     
         3 . The cap ply of  claim 2 , wherein the at least one solvent is selected from the group consisting of toluene/hydrocarbon solvents, xylene, ethyl acetate, alcohols, ethers, and mixtures thereof. 
     
     
         4 . The cap ply of  claim 1 , wherein the at least one adhesion promoter includes silica. 
     
     
         5 . The cap ply of  claim 1 , wherein the at least one tacky resin is selected from the group consisting of phenol-containing resins, aromatic resins, hydrocarbon resins, terpene resins, indene resins, coumarone resins, rosin-based resins, and mixtures thereof. 
     
     
         6 . The cap ply of  claim 5 , wherein the at least one tacky resin is a rosin ester resin. 
     
     
         7 . The cap ply of  claim 1 , wherein the at least one unvulcanized rubber is selected from the group consisting of polybutadiene, polyisoprene, synthetic trans-rich polyisoprene or cis-rich polyisoprene, natural rubber, poly(styrene-co-butadiene), poly(acrylonitrile-co-butadiene), chloroprene, hydrogenated styrene-butadiene rubber, hydrogenated nitrile-butadiene rubber, butyl rubber (polyisobutylene copolymers), halo-butyl rubber, and mixtures thereof. 
     
     
         8 . The cap ply of  claim 1 , wherein the at least one adhesion promoter is selected from the group consisting of formaldehyde-resorcinol condensate and/or resin, formaldehyde-phenol condensate, novolac resins, resole resins, multifunctional epoxy resin, novolac modified epoxy resin, isocyanate compounds, blocked isocyanate resin or compounds, halogenated resorcinol-formaldehyde resin, phenolic resins, halogenated phenolic resins, melamine-formaldehyde resins, vinylpyridine rubber latex, methylene donors such as hexamethylenetetramine and hexamethoxymethylmelamine, organofunctional silanes, and mixtures thereof. 
     
     
         12 . The cap ply of  claim 1 , wherein the tacky finish further includes at least one antioxidant. 
     
     
         13 . The cap ply of  claim 12 , wherein the at least one antioxidant is selected from the group consisting of hindered phenol compounds, acylphenylenediamine compounds, diphenylamine compounds, mercaptan compounds, thioester compounds, thioether compounds, hydroquinoline compounds, and mixtures thereof. 
     
     
         14 . The cap ply of  claim 1 , wherein the at least one tacky resin is rosin ester resin and the at least one adhesion promoter is resorcinol-formaldehyde resin. 
     
     
         15 . The cap ply of  claim 1 , wherein the cap ply further comprises a resorcinol-formaldehyde-latex layer disposed between the textile substrate and the tacky finish. 
     
     
         16 . A tire comprising a cap ply wound over a steel belt ply, wherein the cap ply comprises:
 a) a textile substrate having a tacky finish, said tacky finish comprising:
 (i) at least one tacky resin; 
 (ii) at least one unvulcanized rubber; and 
 (iii) at least one adhesion promoter. 
   
     
     
         17 . The tire of  claim 16 , wherein the cap ply further comprises a resorcinol-formaldehyde-latex layer disposed between the textile substrate and the tacky finish. 
     
     
         18 . The tire of  claim 16 , wherein the at least one tacky resin is a rosin ester resin. 
     
     
         19 . The tire of  claim 16 , wherein the at least one tacky resin is rosin ester resin and the at least one adhesion promoter is resorcinol-formaldehyde resin. 
     
     
         20 . The tire of  claim 16 , wherein the at least one adhesion promoter includes silica.