Patent ID: 7531680
Filing Date: 2009-05-12
Classification: C08K

Abstract:
1. A method for coupling an elastomer and a filler comprising employing at least one silane coupling agent wherein said silane comprises at least one hydrolysable group that, upon compounding said silane with said elastomer and filler, is released to yield a compound that improves downstream processability of the compounded composition or the properties of the final rubber product or both, wherein said silane coupling agent is selected from the group consisting of silanes whose individual structures are represented by at least one of the following general formulae: wherein, in formulae 1 through 4: each occurrence of the subscript, h, is independently an integer from 1 to 3; each separate occurrence of the subscripts, j and k, is independently an integer from 0 to 3, with the proviso that j+k>0; each occurrence of the subscript, m, is independently an integer from 1 to 1000; each occurrence of the subscript, n, is independently an integer from 1 to 1000; each occurrence of the subscript, x, is independently an integer from 2 to 20; each occurrence of X each occurrence of X each occurrence of G each occurrence of J is independently selected from the group consisting of R each occurrence of Y each occurrence of the subscript, p, is independently an integer from 1 to 100; each occurrence of the subscript, q, is independently an integer from 1 to 100; each occurrence of G is independently selected from the group consisting of hydrocarbon fragments obtained by removal of one hydrogen atom of any of the groups listed above for R each occurrence of R is independently selected from the group consisting of the members listed above for R