Urethane polymers and sealant compositions containing the same

Chemistry of carbon compounds – Miscellaneous organic carbon compounds

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Details

260 75NH, 260 775AM, C08L 7508, C08L 7504

Patent

active

040678440

ABSTRACT:
Novel, curable polyurethane polymers in which a proportion of the NCO terminations are reacted with certain amino silanes, or with the residual on reaction of a mercaptosilane with a monoepoxide, or with the residual on reaction of an epoxysilane with a secondary amine.
Sealant compositions formed with the novel polymers are stable in storage, moisture curable and adhere well to various substrates, obviating the need for a primer.

REFERENCES:
patent: 3979344 (1976-09-01), Bryant
patent: 4020043 (1977-04-01), Siefken

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