Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1992-10-30
1993-10-05
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
528 76, 528 77, C08G 1830
Patent
active
052506517
ABSTRACT:
Sealant compositions useful in insulation displacement connector enclosures comprising a urethane crosslinked polymer of monomers containing a sufficient amount of an isocyanate component to provide from about 1 to about 3 percent NCO wherein said isocyanate component contains at least one aliphatic isocyanate, at least about 100 parts of a polyether component containing at least one polyether selected from the group consisting of polyether polyols, and polyether polyamines, from about 0.005% to about 5.0% of an antioxidant, and from about 0.1% to about 10% of a catalyst, said urethane crosslinked polymer having an isocyanate index of about 60 to about 80, wherein said sealant has a 1/4 cone penetration value if from about 20 to about 200 10.sup.-1 mm.
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Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Neaveill Darla P.
Welsh Maurice J.
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