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US 4,302,570 AGranted
Reactive plasticizer for anaerobic adhesives
AssigneeEschem Inc.
InventorGerhardt P. Werber
Life of this patent
Estimating the term…
Abstract
Non-terminal hydroxy diesters of unsaturated dicarboxylic acids or anhydrides are used to plasticize acrylic monomers containing internal chain unsaturation in anaerobic adhesive systems.
Claims3
As a novel composition of matter, a liquid anaerobically curable adhesive composition comprising an anaerobically, polymerizable acrylate, o-benzoic sulfimide as a promoter to accelerate polymerization and a reactive plasticizer which is a non-terminal hydroxy diester of the formula:
- ##STR3## wherein R is aryl or an aliphatic hydrocarbon radical of about 1-22 carbons, R.sup.1 is a hydroxy containing radical of about 2-22 carbons formed from a glycidyl ether and A is the remaining portion of an unsaturated dicarboxylic acid or anhydride, said composition having good shear and hot strength and shelf stability.
Dependencies are inferred from the claim text.