Resilient material of particulate rubber in a binder of butadiene and coumaronl indene polymers

Claim 2

The article of claim 2 wherein said copolymer is said branched block copolymer.

Claim 3

The resilient material of claim 1 wherein said particulate rubber consists of tire buffings.

Claim 4

A process for the preparation of a resilient article comprised of a cured particulate rubber and a binder material comprised of an uncured high green strength butadiene-styrene copolymer and a coumarone-indene resinous tackifier, said process comprising contacting said particulate rubber with said binder material in a sufficient quantity of an organic solvent to thus form a mixture, forming said mixture into a configuration desired of said article when complete, and permitting said solvent to evaporate from said formed mixture to thus produce the completed, dry, solid, resilient article wherein the weight ratio of said particulate rubber to said binder material is in the range of 100 parts by weight particulate rubber per 6 to 60 parts by weight binder material wherein the weight ratio of said copolymer to said tackifier is in the range of 1:1 to 4:1, and further wherein said copolymer is one of a branched block copolymer and a linear block copolymer wherein: said branched block copolymer is comprised of at least three block copolymer branches radiating from a nucleus, each of said block copolymer branches having at least two polymer block segments made from conjugated dienes which comprise 40 to 95 percent by weight of said branched block copolymer and vinyl aromatic compounds which comprise 5 to 60 percent by weight of said branched block copolymer; and wherein said linear block copolymer is comprised of a first block segment, a second block segment, and a third block segment wherein said second block segment, a copolymer of a conjugated diene having four to 12 carbon atoms per molecule and a vinyl-substituted aromatic compound having no more than 24 carbon atoms per molecule, is sandwiched between said first and said third block segments both of which are homopolymer blocks of said vinyl-substituted aromatic compound.

Claim 5

The process of claim 5 wherein the weight ratio of said solvent to said binder material is in the range of 1 to 5 parts by weight solvent per one part by weight of said binder material.

Claim 6

The process of claim 6 wherein said binder material is contained in an emulsion, said emulsion being comprised of said binder material, said organic solvent, water and a suitable surfactant wherein said water in said emulsion is present in the range of 20 to 65 percent by weight of the total weight of said emulsion, and during said evaporation step said water evaporates as well as said solvent.

Claim 7

The process of claim 7 wherein said solvent is a mixture Of trichloroethylene and xylene wherein said trichloroethylene is present in said solvent mixture to the extent of about 60 percent by weight of the total weight of said solvent mixture.

Claim 8

A process according to claim 5 wherein said particulate rubber consists of tire buffings.