Solvent for urethane adhesives and coatings and method of use

Patent · Tue Aug 03 00:00:00 EDT 2010

OSTI ID:1015773

Simandl, Ronald F ^[1]; Brown, John D ^[2]; Holt, Jerrid S ^[1]

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1. Knoxville, TN
2. Harriman, TN

A solvent for urethane adhesives and coatings, the solvent having a carbaldehyde and a cyclic amide as constituents. In some embodiments the solvent consists only of miscible constituents. In some embodiments the carbaldehyde is benzaldehyde and in some embodiments the cyclic amide is N-methylpyrrolidone (M-pyrole). An extender may be added to the solvent. In some embodiments the extender is miscible with the other ingredients, and in some embodiments the extender is non-aqueous. For example, the extender may include isopropanol, ethanol, tetrahydro furfuryl alcohol, benzyl alcohol, Gamma-butyrolactone or a caprolactone. In some embodiments a carbaldehyde and a cyclic amide are heated and used to separate a urethane bonded to a component.

• Research Organization: Oak Ridge Y-12 Plant (Y-12), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22800
• Assignee: Babcock & Wilcox Technical Services Y-12, LLC (Oak Ridge, TN)
• Patent Number(s): 7,767,637
• Application Number: 11/749,234
• OSTI ID: 1015773
• Country of Publication: United States
• Language: English