Polyurethane elastomer and foam exhibiting improved abrasion res

Details Polyurethane elastomer and foam exhibiting improved abrasion res Polyurethane elastomer and foam exhibiting improved abrasion res

1995-06-29

1996-04-23

Foelak, Morton

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

25218224, 521132, 521137, 524483, 524507, 525130, C08G 1832

Patent

active

055100546

ABSTRACT:
Disclosed is a polyurethane elastomer having a density of from about 100 to about 1100 kg/m.sup.3, and an abrasion loss of less than about 300 mg, as determined in accordance with Test Method A of ISO 4649. Such elastomer can be prepared by reacting a urethane-modified polyisocyanate with at least one polyol in the presence of from about 0.1 to about 10 parts per 100 parts by weight of polyol' of a liquid polybutadiene comprising 1,2-butene, 2,3-(trans)butene and 2,3-(cis)butene moieties, wherein the 1,2-butene content is less than about 50 percent, based on total butene content, and the 2,3 (cis)-butene content is greater than the 2,3-(trans)butene content.

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