C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/157, 400/742
C08G 18/20 (2006.01) C08G 18/10 (2006.01) C09K 3/10 (2006.01)
Patent
CA 1297623
ABSTRACT A moisture curable sealant having good stability in the absence of moisture and a rapid cure rate in the sole presence of atmospheric moisture. The sealant comprises a polyurethane pre- polymer having an isocyanate functionality between 2.3 and 3.0 and, admixed therewith as a catalyst, from 0.2 to 1.75 percent, by weight of the sealant, of dimorpholinodiethyl ether. This sealant is capable rapid cure with the addition of water. Although it is highly reactive in the presence of atmospheric moisture alone, it nevertheless has a good shelf stability in the absence of moisture.
549655
Hsieh Harry W.s.
Prendergast John J. SR.
Rizk Sidky D.
Essex Specialty Products Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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