C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
402/161
C08L 75/04 (2006.01) C08G 18/22 (2006.01)
Patent
CA 1324457
POTASSIUM CATALYST SYSTEM FOR PREPARING POLYURETHANE BASED PLYWOOD-PATCH COMPOSITIONS ABSTRACT OF THE DISCLOSURE A plywood-patching composition is provided based on a non- cellular polyurethane elastomer prepared by reacting a polyether or polyester polyol with a polyisocyanate in the presence of a catalytic amount of a substantially anhydrous potassium salt of a carboxylic acid having from 2 to about 20 carbon atoms, and process for prepar- ing same. The catalyst utilized are relatively non-toxic, yet they promote rapid polymerization with essentially no foaming for a wide variety of non-cellular polyurethane elastomeric applications, partic- ularly in plywood-patch applications where even small amounts of foaming is deleterious to the properties thereof.
613246
Ahmad Mahfooz
Bock Frank G.
Dupre Frederick C. Jr.
Sim & Mcburney
Willamette Valley Company (the)
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