Epoxy resin

Details Epoxy resin Epoxy resin

1972-03-24

1976-07-13

Foelak, Morton

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 2N, 260 18EP, 260 47EN, 260836, C08J 930

Patent

active

039692868

ABSTRACT:
By mixing one part of a prepolymer containing a polyamine partially polymerized with an organic epoxide and subsequently reacted with a fatty acid containing from 8 to 32 carbon atoms, and then reacting this prepolymer mixture with 3 parts of an organic epoxide, a composition was obtained which made a gas frothable, shear-stable, room temperature curing, low density foam. A particularly advantageous prepolymer was prepared using a polyamine selected from the group consisting of diethylenetriamine, triethylenetetramine, and tetraethylenepentamine, partially polymerized with an organic epoxide having an average molecular weight of about 350 and having an epoxide equivalent of 185 to 192, and reacted with 2-10 weight percent linoleic acid. When one part of this prepolymer was reacted with about three parts of epoxy, and frothed by whipping in air or nitrogen an epoxy foam was produced which could be troweled onto surfaces and into corners or crevices, and subsequently cured, at near ambient temperature, to a strong dimensionally stable foam product.

REFERENCES:
patent: 3144421 (1964-08-01), Yost
patent: 3154504 (1964-10-01), Carey

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