Co-solvent system for removing cured fiberglass resin and cured flexible or rigid urethane foams from substrates
AssigneeTexaco Chemical Company
InventorsEdward T. Marquis, Michael Cuscurida
Life of this patent
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Abstract
A co-solvent system for the dissolution of cured flexible polyurethane foams, cured rigid polyurethane foams, and cured polyester resins is disclosed. The co-solvent system comprises a mixture of an alkylene carbonate and tetramethyl urea.
Claims7
A co-solvent system for removing from a substrate a material selected from the group consisting of cured flexible polyurethane foam, cured rigid polyurethane foam, and cured polyester resin, consisting essentially of a mixture of an alkylene carbonate and tetramethyl urea in a weight ratio of alkylene carbonate to tetramethyl urea of about 1:4 to about 4:1, which mixture will at least partially remove from a substrate a material selected from the group consisting of cured flexible polyurethane foam, cured rigid polyurethane foam, and cured polyester resin.
Dependencies are inferred from the claim text.