N-halothio-amide-modified elastomers and their application as adhesives for precured elastomeric substrates
申请人:THE GOODYEAR TIRE & RUBBER COMPANY
公开号:EP0989171A1
公开(公告)日:2000-03-29
New modified elastomers, prepared by reaction of polydiene elastomers with N-halothio-sulfonamides or N-halothio-carboxamides are disclosed. The modified elastomers, diluted with solvents or oils, are applied as an adhesive layer between the surfaces of sulfur-vulcanized elastomeric components and vulcanized to produce an adhesive bond. The process is useful for adhering precured tire treads to cured tire carcasses and is thus applicable in the manufacture of retreaded tires. This invention more specifically discloses an adhesive composition which is comprised of a mixture of a rubbery polymer selected from the group consisting of N-halothio-sulfonamide-modified rubbery polymers and N-halothio-carboxamide-modified rubbery polymers in an oil. The present invention further discloses a laminated rubber article which is comprised of a first rubber layer and a second rubber layer wherein the first rubber layer is adhered to the second rubber layer with a rubbery polymer selected from the group consisting of N-halothio-sulfonamide-modified rubbery polymers and N-halothio-carboxamide-modified rubbery polymers.
本发明公开了通过聚二烯弹性体与 N-卤代磺酰胺或 N-卤代羧酰胺反应制备的新型改性弹性体。改性弹性体用溶剂或油稀释后,作为粘合层涂在硫磺硫化弹性体部件的表面之间,并经硫化产生粘合剂。该工艺可用于将预硫化轮胎胎面粘附到硫化轮胎胎体上,因此适用于制造翻新轮胎。本发明更具体地公开了一种粘合剂组合物,它由选自 N-卤代磺酰胺改性橡胶聚合物和 N-卤代甲酰胺改性橡胶聚合物的橡胶聚合物在油中的混合物组成。本发明进一步公开了一种层压橡胶制品,它由第一橡胶层和第二橡胶层组成,其中第一橡胶层用选自 N-卤代磺酰胺改性橡胶聚合物和 N-卤代甲酰胺改性橡胶聚合物的橡胶聚合物粘附在第二橡胶层上。