Abstract: Rubber compositions, methods of making rubber compositions and articles comprising the rubber compositions that have crumb rubber particles in the rubber compositions. A cross-linked rubber composition, comprising a diene rubber and a masterbatch material comprising between 50 and 75 wt. % natural rubber and between 25 and 50 wt. % crumb rubber particles, wherein the crumb rubber particles are 40 mesh or smaller. A method for preparing a rubber composition having crumb rubber, the method comprising mixing a masterbatch, the masterbatch comprising between 50 and 75 wt. % natural rubber and between 25 and 50 wt. % crumb rubber particles and mixing the masterbatch with a diene rubber.

Abstract: The present disclosure is directed to synthetic textiles treated with h-PEI derivatives, such derivatives possessing the general structure shown below: (R)x?h-PEI?(A)y where R is a non-hyperbranched hydrocarbon group, said hydrocarbon group having at least one linear portion, said linear portion having between 5 and 30 carbon atoms; where x is a number from 1 to 10,000; where h-PEI is a hyperbranched polyethyleneimine; where A is an organic compound having from 1 to 4 carbon atoms; where y is a number from 0 to 500; and wherein R is present in an amount of between about 0.1% and about 80% by weight of the h-PEI derivative. The chemical treatment imparts durable odor control, softness, wrinkle resistance, and moisture wicking to substrates treated therewith.