Cord and fabric for a power transmission belt

Abstract

A cord and fabric for a power transmission belt comprised of a belt body having a tooth portion and made of a rubber stock of hydrogenated nitrile having a Mooney viscosity at 100 DEG C. of at least 90, whereby the internally generated heat of the belt body during use in a high temperature environment is suppressed. A cashew-modified phenol resin layer is formed at the outermost layer of the cords and fabric for bonding with the belt body. The cords are embedded in the longitudinal direction of the belt body.

We claim: .[. 
     
       1.  A power transmission belt provided with a belt body formed using a rubber stock a hydrogenated nitrile rubber having a Mooney viscosity at 100° C. of at least 90 and cords embedded in the belt body extending in the longitudinal direction of the belt body and having at their outermost layer a layer of phenol resin modified by a phenol having side chains with unsaturated bonds and a component including a phenyl carboxylic acid and a predetermined compound..]..[.2. A power transmission belt as set forth in claim 1, wherein the Mooney viscosity is about 145..]..[.3. A power transmission belt as set forth in claim 1, wherein the belt body is vulcanized by a peroxide or sulfur..]..[.4. A power transmission belt as set forth in claim 3, wherein a covulcanizing agent used for the vulcanization includes zinc methacrylate and trimethylolpropane-trimethacrylate..]..[.5. A power transmission belt as set forth in claim 1, wherein the cords are formed by a high strength glass fiber or aromatic polyamide fiber..]..[.6. A power transmission belt as set forth in claim 1, wherein a resorcine-formaldehyde-latex layer is formed on the cords and an overcoat layer is formed over the outer circumference of the same..]..[.7. A power transmission belt as set forth in claim 1, wherein a tooth portion is formed at least at one surface of the belt body and the surface of the tooth portion is covered by fabric..]..[.8. A power transmission belt as set forth in claim 7, wherein a modified phenol resin layer is formed at the surface of the belt body side of the fabric..]..[.9. A power transmission belt as set forth in claim 7, wherein a resorcine-formaldehyde-latex layer is formed at the surface of the fabric..]..[.10. A power transmission belt as set forth in claim 7, wherein the fabric is comprised by composite yarn provided along the longitudinal direction of the belt and yarn provided along the width direction of the belt..]..[.11. A power transmission belt as set forth in claim 10, wherein the composite yarn is provided with a core yarn of an elastic yarn of a polyurethane yarn, a spun yarn wrapped around the core yarn, and a crimping yarn wrapped at the outside of the spun yarn..]..[.12. A power transmission belt as set forth in claim 1, wherein the modified phenol resin layer is comprised by a naturally produced phenol resin..]..[.13. A power transmission belt as set forth in claim 1, wherein the-modified phenol resin layer is comprised by a modified phenol resin including cashew nut shell liquid..]..[.14. A power transmission belt as set forth in claim 1, wherein the modified phenol resin layer is comprised by a Japanese lacquer-modified phenol resin..]..[.15. A power transmission belt as set forth in claim 1, wherein the modified phenol resin layer is comprised by a phenol resin modified by urushiol, which is the main ingredient of Japanese lacquer..]..[.16. A power transmission belt as set forth in claim 1, wherein the modified phenol resin layer is comprised by a phenol resin modified by laccol, which is the main ingredient of tsuta lacquer..]..[.17. A power transmission belt as set forth in claim 1, wherein the modified phenol resin layer is comprised by a phenol resin modified by thitsiol, which is the main ingredient of Burmese lacquer..]..[.18. A power transmission belt as set forth in claim 1, wherein the modified phenol resin layer is comprised by a phenol resin modified by moreacol, which is the main ingredient of Cambodian lacquer..]..[.19. A power transmission belt as set forth in claim 1 wherein the modified phenol resin layer is comprised by a bhilawan shell liquid-modified phenol resin..]..[.20. A power transmission belt as set forth in claim 1, wherein the modified phenol resin layer is comprised by a phenol resin modified by bhilawanol, which is one component of bhilawan shell liquid..]..[.21. A power transmission belt as set forth in claim 1, wherein the modified phenol resin layer is comprised by a phenol resin modified by a compound introduced at an aromatic ring having a phenolic hydroxyl group..]..[.22. A power transmission belt as set forth in claim 1, wherein the modified phenol resin layer is comprised by a phenol resin modified by oiticca oil..]..[.23. A power transmission belt as set forth in claim 1, wherein the modified phenol resin layer is comprised by a phenol resin modified by an additional reaction of tung oil and 
     
     
        catechol..]..Iadd.24.  A cord comprising: an outermost layer of phenol resin modified by one of a phenol having side chains with unsaturated bonds, and a component including a phenol carboxylic acid..Iaddend..Iadd.25. A cord as set forth in claim 24, wherein said cord is embedded in a belt body of a power transmission belt, said belt being formed using a rubber stock of a hydrogenated nitrile rubber having a Mooney viscosity at 100° C. of at least 90..Iaddend..Iadd.26. A cord as set forth in claim 25, wherein said Mooney viscosity is about 145..Iaddend..Iadd.27. A cord as set forth in claim 25, wherein said cord is formed by at least one of a high strength glass fiber and a aromatic polyamide fiber..Iaddend..Iadd.28. A cord as set forth in claim 25, wherein a resorcine-formaldehyde-latex layer is formed on said cord and an overcoat layer is formed over the outer circumference of the same..Iaddend..Iadd.29. A cord as set forth in claim 24, wherein the modified phenol resin layer is comprised by a naturally produced phenol 
     
     
        resin..Iaddend..Iadd.30.  A cord as set forth in claim 24, wherein the modified phenol resin layer is comprised by a modified phenol resin including cashew nut shell liquid..Iaddend..Iadd.31. A cord as set forth in claim 24, wherein the modified phenol resin layer is comprised by a Japanese lacquer-modified phenol resin..Iaddend..Iadd.32. A cord as set forth in claim 24, wherein the modified phenol resin layer is comprised by a phenol resin modified by urushiol, which is the main ingredient of Japanese liquor..Iaddend..Iadd.33. A cord as set forth in claim 24, wherein the modified phenol resin layer is comprised by a phenol resin modified by laccol, which is the main ingredient of tsuta lacquer..Iaddend..Iadd.34. A cord as set forth in claim 24, wherein the modified phenol resin layer is comprised by a phenol resin modified by thitsiol, which is the main ingredient of Burmese lacquer..Iaddend..Iadd.35. A cord as set forth in claim 24, wherein the modified phenol resin layer is comprised by a phenol resin modified by moreacol, which is the main ingredient of Cambodian 
     
     
        lacquer..Iaddend..Iadd.6.  A cord as set forth in claim 24, wherein the modified phenol resin layer is comprised by a bhilawan shell liquid-modified phenol resin..Iaddend..Iadd.37. A cord as set forth in claim 24, wherein the modified phenol resin layer is comprised by a phenol resin modified by bhilawanol, which is one component of bhilawan shell liquid..Iaddend..Iadd.38. A cord as set forth in claim 24, wherein the modified phenol resin layer is comprised by a phenol resin modified by a compounds introduced at an aromatic ring having a phenolic hydroxyl group..Iaddend..Iadd.39. A cord as set forth in claim 24, wherein the modified phenol resin layer is comprised by a phenol resin modified by oiticca oil..Iaddend..Iadd.40. A cord as set forth in claim 24, wherein the modified phenol resin layer is comprised by a phenol resin modified by an additional reaction of tung oil and catechol..Iaddend..Iadd.41. A fabric comprised by a fiber comprising: an outermost layer of phenol resin modified by one of a phenol having side chains with unsaturated bonds, and a component including a phenol carboxylic acid..Iaddend..Iadd.42. A fabric as set forth in claim 41, wherein said fabric is provided on a belt body of a power transmission belt in such a manner that said layer is adhered on a surface of said belt body, said belt body being formed using as a rubber stock of a hydrogenated nitrile rubber having a Mooney viscosity at 100° C. of at least 90..Iaddend..Iadd.43. A fabric as set forth in claim 42, wherein the Mooney viscosity is about 145..Iaddend..Iadd.44. A fabric as set forth in claim 42, wherein a tooth portion is formed at said surface of said belt body..Iaddend..Iadd.45. A fabric as set forth in claim 41, wherein a resorcine-formaldehyde-latex layer is formed at the surface of said fabric..Iaddend..Iadd.46. A fabric as set forth in claim 41, wherein said fabric is comprised by composite yarn provided along the longitudinal direction of the belt and yarn provided along the width direction of the belt..Iaddend..Iadd.47. A fabric as set forth in claim 46, wherein the composite yarn is provided with a core yarn of an elastic yarn of a polyurethane yarn, a spun yarn wrapped around the core yarn, and a crimping yarn wrapped at the outside of the spun yarn..Iaddend..Iadd.48. A fabric as set forth in claim 41, wherein the modified phenol resin layer 
     
     
        is comprised by a naturally produced phenol resin..Iaddend..Iadd.49.  A fabric as set forth in claim 41, wherein the modified phenol resin layer is comprised by a modified phenol resin including cashew nut shell liquid..Iaddend..Iadd.50. A fabric as set forth in claim 41, wherein the modified phenol resin layer is comprised by a Japanese lacquer-modified phenol resin..Iaddend..Iadd.51. A fabric as set forth in claim 41, wherein the modified phenol resin layer is comprised by a phenol resin modified by urushiol, which is the main ingredient of Japanese lacquer..Iaddend..Iadd.52. A fabric as set forth in claim 41, wherein the modified phenol resin layer is comprised by a phenol resin modified by laccol, which is the main ingredient of tsuta lacquer..Iaddend..Iadd.53. A fabric as set forth in claim 41, wherein the modified phenol resin layer is comprised by a phenol resin modified by thitsiol, which is the main ingredient of Burmese lacquer..Iaddend..Iadd.54. A fabric as set forth in claim 41, wherein the modified phenol resin layer is comprised by a phenol resin modified by moreacol, which is the main ingredient of Cambodian lacquer..Iaddend..Iadd.55. A fabric as set forth in claim 41, wherein the modified phenol resin layer is comprised by a bhilawan shell 
     
     
        liquid-modified phenol resin..Iaddend..Iadd.56.  A fabric as set forth in claim 41, wherein the modified phenol resin layer is comprised by a phenol resin modified by bhilawanol, which is one component of bhilawan shell liquid..Iaddend..Iadd.57. A fabric as set forth in claim 41, wherein the modified phenol resin layer is comprised by a phenol resin modified by a compound introduced at an aromatic ring having a phenolic hydroxyl group..Iaddend..Iadd.58. A fabric as set forth in claim 41, wherein the modified phenol resin layer is comprised by a phenol resin modified by oiticca oil..Iaddend..Iadd.59. A fabric as set forth in claim 41, wherein the modified phenol resin layer is comprised by a phenol resin modified by an additional reaction of tung oil and catechol..Iaddend.