REINFORCED PRODUCT COMPRISING A COMPOSITION CONTAINING A BALANCED METAL OXIDE AND STEARIC ACID DERIVATIVE SYSTEM AND TIRE COMPRISING SAID REINFORCED PRODUCT
A reinforced product, which can be used especially for reinforcing a finished rubber article, comprises one or more textile or metallic reinforcing thread(s), said thread(s) being covered with a sheath comprising a thermoplastic polymer composition, the sheathed thread(s) being themselves embedded in a rubber composition referred to as coating rubber, characterized in that this coating rubber is a composition based on at least one diene elastomer, a reinforcing filler, and a sulfur-based vulcanization system, which system comprises a metal oxide and a stearic acid derivative in amounts such that the ratio of the content of metal oxide and of stearic acid derivative, in phr, is less than 7, preferably less than 5.
1 - 29 . (canceled)
30 . A reinforced product comprising one or more textile or metallic reinforcing threads, said one or more textile or metallic reinforcing threads being covered with a sheath comprising a thermoplastic polymer composition, the sheathed one or more textile or metallic reinforcing threads being themselves embedded in a coating rubber composition,
wherein the coating rubber composition is based on at least one diene elastomer, a reinforcing filler, and a sulfur-based vulcanization system, said system comprising a metal oxide and a stearic acid derivative in amounts such that a ratio of the content of metal oxide and of stearic acid derivative, in phr, is less than 7.
31 . The reinforced product according to claim 30 , wherein the ratio of the content of metal oxide and of stearic acid derivative, in phr, is less than 5.
32 . The reinforced product according to claim 30 , wherein the coating rubber composition comprises zinc oxide and stearic acid in amounts such that a ratio of the content of zinc oxide and of stearic acid, in phr, is less than 7.
33 . The reinforced product according to claim 32 , wherein the ratio of the content of zinc oxide and of stearic acid, in phr, is between 1 and 3.
34 . The reinforced product according to claim 30 , wherein the coating rubber composition comprises a metal oxide at a content of less than 7 phr and a stearic acid derivative at a content of greater than 1 phr.
35 . The reinforced product according to claim 30 , wherein the coating rubber composition comprises a metal oxide at a content within a range extending from 1 to 7 phr.
36 . The reinforced product according to claim 35 , wherein the coating rubber composition comprises a metal oxide at a content within a range extending from 3 to 5 phr.
37 . The reinforced product according to claim 30 , wherein the coating rubber composition comprises a stearic acid derivative at a content within a range extending from 1 to 3 phr.
38 . The reinforced product according to claim 37 , wherein the coating rubber composition comprises a stearic acid derivative at a content within a range extending from 1 to 2 phr.
39 . The reinforced product according to claim 30 , wherein the coating rubber composition has a ratio of the amounts, in phr (parts by weight per hundred parts by weight of elastomer), of sulfur and of reinforcing filler, is less than 0.08.
40 . The reinforced product according to claim 30 , wherein the coating rubber composition comprises a sulfur content of less than or equal to 5 phr.
41 . The reinforced product according to claim 40 , wherein the coating rubber composition comprises a sulfur content within a range extending from 0.1 to 5 phr.
42 . The reinforced product according to claim 30 , wherein the coating rubber composition comprises a vulcanization accelerator having a vulcanization initiation time t0 of less than 3.5 minutes.
43 . The reinforced product according to claim 42 , wherein the vulcanization accelerator is selected from the group consisting of compounds of the thiuram family, thiocarbamate derivatives, sulphenamides, thiophosphates and mixtures thereof.
44 . The reinforced product according to claim 43 , wherein the vulcanization accelerator comprises N-cyclohexyl-2-benzothiazolesulphenamide.
45 . The reinforced product according to claim 30 , wherein a ratio between the sulfur content and a vulcanization accelerator content is less than 4 in the coating rubber composition.
46 . The reinforced product according to claim 30 , wherein a ratio between the sulfur content and a vulcanization accelerator content is within a range extending from 0.1 to 4.
47 . The reinforced product according to claim 30 , wherein the coating rubber composition does not comprise vulcanization retarder.
48 . The reinforced product according to claim 30 , wherein the coating rubber composition does not comprise cobalt salt.
49 . The reinforced product according to claim 30 , wherein the coating rubber composition does not comprise an adhesion promoter.
50 . The reinforced product according to claim 30 , wherein the at least one diene elastomer predominantly comprises an elastomer selected from the group consisting of natural rubber, synthetic polyisoprene and a mixture thereof.
51 . The reinforced product according to claim 30 , wherein the coating rubber composition comprises from 20 to 80 phr of reinforcing filler.
52 . The reinforced product according to claim 30 , wherein the coating rubber composition comprises carbon black as a predominant filler.
53 . The reinforced product according to claim 30 , wherein the one or more textile or metallic reinforcing threads are one or more metallic reinforcing threads.
54 . The reinforced product according to claim 30 , wherein the sheathed one or more textile or metallic reinforcing threads are coated with an adhesive.
55 . The reinforced product according to claim 54 , wherein the adhesive is a resorcinol-formaldehyde-latex adhesive.
56 . A tire comprising a reinforced product according to claim 30 .
57 . The tire according to claim 56 , wherein the reinforced product is present in the tire at least in one ply selected from crown reinforcing plies and carcass plies.