Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Noninterengaged fiber-containing paper-free web or sheet...
Patent
1979-01-26
1981-08-25
Herbert, Jr., Thomas J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Noninterengaged fiber-containing paper-free web or sheet...
260 302, 260 308R, 260 326N, 260 326NR, 264128, 528 61, B32B 2700, C08K 534
Patent
active
042860148
ABSTRACT:
A polyurethane elastomer which comprises a reaction product of (A) a polymeric diol having a molecular weight of about 800-5000, (B) a mixture of organic diisocyanates wherein about 2-70 mol % is composed of aliphatic diisocyanate (said aliphatic diisocyanate having no direct bond between an aromatic ring and an isocyanate group) and wherein the balance 98-30 mol % is composed of aromatic diisocyanate which includes a direct bond between an aromatic ring and an isocyanate group, and (C) a chain extender comprising hydrazine and/or a derivative having the formula NH.sub.2 NHR and another chain extender having two functional groups constituting amino and/or hydroxyl groups,
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Shimizu Kitao
Tanaka Minoro
Yagi Kenkichi
Herbert, Jr. Thomas J.
Toray Industries Incorporated
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