Polyurethane/urea heat-cured and moisture-cured elastomers with

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...

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528 59, 528 61, 528 65, 528 66, 528 75, 528 76, 528 85, 560 25, 560 26, 560330, 560360, C08G 1810, C07C25700

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active

056962215

ABSTRACT:
Elastomers with improved physical properties, particularly hardness and rebound, may be prepared by the diamine chain extension or moisture cure of low isocyanate group content, toluene diisocyanate-based prepolymers prepared from a polyol component comprising a high molecular weight, low unsaturation polyoxypropylene diol and a low molecular weight diol. The elastomers are useful for applications such as rollers and other applications where hardness and rebound are important.

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