Tetrakisphenol and non-clathrated curing agent for epoxy resin

Details Tetrakisphenol and non-clathrated curing agent for epoxy resin Tetrakisphenol and non-clathrated curing agent for epoxy resin

2006-08-25

2009-02-24

Sellers, Robert (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S423000, C525S485000, C525S486000, C525S504000, C525S505000, C525S506000, C525S508000, C525S510000, C525S533000, C528S098000

Reexamination Certificate

active

07495060

ABSTRACT:
The present invention has an object to provide curatives for epoxy resins and curing accelerators for epoxy resins, which both have improved subliming and decomposing properties and which, when mixed with an epoxy resin, enable the mixture to be greatly improved in thermal stability that is extremely important for the control of a curing reaction and to have a prolonged pot life (stability as a one-pack mixture comprising the epoxy resin, curative, etc.) and improved curability at low temperatures. The curative is characterized by being a clathrate comprising a tetrakisphenol compound represented by a general formula (I), wherein X represents (CH2)n, wherein n is 0, 1, 2 or 3, and R1to R8each represents hydrogen, a lower alkyl, optionally-substituted phenyl, halogeno or a lower alkoxy, and the curing accelerator is characterized by being a clathrate comprising a tetrakisphenol compound represented by the general formula (I) shown above and a compound accelerating the curing of a compound which reacts with the epoxy group of an epoxy resin to cure the resin.

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