Power transmission belt
View Patent ↗The present invention is directed to an endless power transmission belt having an elastomeric body and at least one treated textile fabric, the treated textile fabric including a first treatment including a polyamide and an epoxy; and optionally, a second treatment including an RFL adhesive.
1. An endless power transmission belt comprising:
an elastomeric body and at least one treated textile fabric, said treated textile fabric comprising:
a first treatment comprising from 23 to 95 percent by weight of a polyamide and from 77 to 5 percent by weight of an epoxy, based on the added weight of the polyamide and the epoxy first treatment; and
optionally, a second treatment comprising an RFL adhesive.
2. The endless power transmission belt of claim 1 , wherein said treated textile fabric is selected from fabric facing layers, fabric backing layers, and fabric reinforcements.
3. The endless power transmission belt of claim 1 , wherein said treated textile fabric comprises an aromatic polyamide fabric.
4. The endless power transmission belt of claim 1 , wherein said first treatment is applied to said textile fabric as a liquid solution of polyamide and epoxy.
5. The endless power transmission belt of claim 1 , wherein said first treatment is applied to said textile fabric as an aqueous dispersion of polyamide and epoxy.
6. The endless power transmission belt of claim 1 , wherein said polyamide is an alcohol soluble polyamide terpolymer.
7. The endless power transmission belt of claim 1 , wherein said polyamide is a water dispersible polyamide terpolymer.
8. The endless power transmission belt of claim 1 , wherein said epoxy is a glycidyl ether of bisphenol A.
9. The endless power transmission belt of claim 1 , wherein said elastomeric body comprises at least one elastomer selected from the group consisting of ethylene-alpha-olefin rubber, silicone rubber, polychloroprene, polybutadiene, epichlorohydrine, acrylonitrile rubber, hydrogenated acrylonitrile rubber, zinc salts of unsaturated carboxylic acid ester grafted hydrogenated nitrile butadiene elastomer, natural rubber, synthetic cis-1,4-polyisoprene, styrene-butadiene rubber, ethylene-vinyl-acetate copolymer, ethylene methacrylate copolymers and terpolymers, chlorinated polyethylene, chlorosulfonated polyethylene, alkylated chlorosulfonated polyethylene, trans-polyoctenamer, polyacrylic rubber, non-acrylated cis-1,4-polybutadiene, polyurethanes, and mixtures thereof.
10. The endless power transmission belt of claim 1 , wherein said first treatment is applied to said textile fabric as an aqueous dispersion or liquid solution, either of said aqueous dispersion or liquid solution comprising from about 3 to about 20 percent by weight of polyamide, and from about 1 to about 10 percent by weight of epoxy.
11. An endless power transmission belt comprising:
an elastomeric body and at least one treated textile fabric, said treated textile fabric comprising:
a first treatment comprising about 42 to about 83 percent by weight of a polyamide and from about 58 to about 17 percent by weight of an epoxy, based on the added weight of the polyamide and the epoxy first treatment; and
optionally, a second treatment comprising an RFL adhesive.
12. The endless power transmission belt of claim 11 , wherein said treated textile fabric is selected from fabric facing layers, fabric backing layers, and fabric reinforcements.
13. The endless power transmission belt of claim 11 , wherein said treated textile fabric comprises an aromatic polyamide fabric.
14. The endless power transmission belt of claim 11 , wherein said first treatment is applied to said textile fabric as a liquid solution of polyamide and epoxy.
15. The endless power transmission belt of claim 11 , wherein said first treatment is applied to said textile fabric as an aqueous dispersion of polyamide and epoxy.
16. The endless power transmission belt of claim 11 , wherein said polyamide is an alcohol soluble polyamide terpolymer.
17. The endless power transmission belt of claim 11 , wherein said polyamide is a water dispersible polyamide terpolymer.
18. The endless power transmission belt of claim 11 , wherein said epoxy is a glycidyl ether of bisphenol A.
19. The endless power transmission belt of claim 11 , wherein said elastomeric body comprises at least one elastomer selected from the group consisting of ethylene-alpha-olefin rubber, silicone rubber, polychloroprene, polybutadiene, epichlorohydrine, acrylonitrile rubber, hydrogenated acrylonitrile rubber, zinc salts of unsaturated carboxylic acid ester grafted hydrogenated nitrile butadiene elastomer, natural rubber, synthetic cis-1,4-polyisoprene, styrene-butadiene rubber, ethylene-vinyl-acetate copolymer, ethylene methacrylate copolymers and terpolymers, chlorinated polyethylene, chlorosulfonated polyethylene, alkylated chlorosulfonated polyethylene, trans-polyoctenamer, polyacrylic rubber, non-acrylated cis-1,4-polybutadiene, polyurethanes, and mixtures thereof.
20. The endless power transmission belt of claim 11 , wherein said first treatment is applied to said textile fabric as an aqueous dispersion or liquid solution, either of said aqueous dispersion or liquid solution comprising from about 3 to about 20 percent by weight of polyamide, and from about 1 to about 10 percent by weight of epoxy.