Stock material or miscellaneous articles – Composite – Of polyamidoester
Patent
1988-06-15
1989-08-08
Foelak, Morton
Stock material or miscellaneous articles
Composite
Of polyamidoester
4284258, 528 60, 528 67, C08G 1810, C08G 1830
Patent
active
048551856
ABSTRACT:
Novel polyurethane formulations especially useful as membranes for the protection of bridge deckings. The polurethane is prepared by mixing two components, A and B. Component A consists essentially of a low-molecular weight polyol, e.g., glycerol; a poly(oxypropylene) triol; and an elastomer. Component B is a special MDI, either a mix of 4,4'- and 2,4'-isomers of diphenylmethane diisocyanate or a mix of 4,4'-diphenylmethane diisocyanate and its reaction product with a low molecular weight poly(oxypropylene).
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Blank Norman E.
Buxbaum Susan P.
Hartwig Richard C.
Vu Cung
Cross Charles A.
Foelak Morton
W. R. Grace & Co.,-Conn.
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