C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/20 (2006.01)
Patent
CA 2125225
RAPID CURING POLYURETHANE COMPOSITION USEFUL AS A COATING OR SEALANT ABSTRACT OF THE DISCLOSURE A storage-stable, rapid curing one-component polyurethane composition useful as a sealant or coating is made with an isocyanate prepolymer having an isocyanate group content of from about 4 to about 6% and a molecular weight of from about 1400 to about 2100, an oxazolidine and optionally a catalyst. The prepolymer used is the reaction product of toluene diisocyanate, a polytetramethylene ether glycol having a molecular weight of from about 500 to about 1500 and a diol having a molecular weight of from about 50 to about 200. This composition is useful as a coating or sealant for porous substrates, particularly wood-based products such as wood composites and flake board.
Dvorchak Michael J.
Emanuele Frank. Jr.
Mcfarlane Patrick J.
Potter Terry A.
Venham Lanny D.
Corporation Bayer
de Gagne Jacqueline A.
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