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US 4,701,513 AGranted
Novel epoxy hardeners
AssigneeW. R. Grace & Co.
InventorShiow C. Lin
Life of this patent
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Abstract
This invention relates to the use of compositions of the formula: ##STR1## wherein n is 2 to 4 and X is --O--, --S-- or ##STR2## wherein R.sub.1 is an aliphatic or aromatic moiety as a curing agent for epoxy resins to form a thermoset material which has a reduced shrinkage.
Claims5
A thermosettable composition comprising an epoxy resin and 0.1 to 99.9% by weight of the epoxy resin of an epoxy hardener of the formula:
- ##STR10## wherein n is 2 to 4 and X is --O--, --S-- or ##STR11## wherein R.sub.1 is an aliphatic or aromatic moiety.
Dependencies are inferred from the claim text.