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US 4,395,520 AGranted
Process for curing thermosetting resins using sulfur dioxide containing compounds as latent catalysts
AssigneeUnion Carbide Corporation
InventorsSui-Wu Chow, George L. Brode
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Abstract
Latent catalysts comprising certain sulfur dioxide containing compounds such as bubadiene sulfone are used in the cure of thermosetting resins which are curable by an acid catalyst.
Claims16
In a process for the curing of a thermosetting resin which is curable using an acid catalyst, the improvement being the use of a sulfur dioxide containing compound as a latent catalyst, said compound being stable at at a temperature less than about 60.degree. C. and dissociable into sulfur dioxide at a temperature greater than about 100.degree. C.
Dependencies are inferred from the claim text.