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...
Reexamination Certificate
2003-08-29
2009-06-23
Moore, Margaret G (Department: 1796)
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...
C528S419000, C564S508000, C564S505000
Reexamination Certificate
active
07550550
ABSTRACT:
Provided herein are polyamine precursors useful in the manufacture of epoxy resins. Use of a polyamine precursor according to the invention provides an epoxy resin formulation having an increased working time over prior art amines used for curing epoxies. Increased working times translate to the ability to manufacture composites which could not be made using conventional epoxy curing agents, such as composite blades for wind-driven turbines. Such polyamines are also useful in polyurea formulations for lengthening reaction time, thus allowing more flow of applied polyurea coatings prior to gellation.
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Alexander David C.
Burton Bruce L.
Forkner Matthew W.
Godinich Chris E.
Klein Howard P.
Brown Ron D.
Huntsman Petrochemical Corporation
Korompal Edward
Moore Margaret G
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