发明名称 |
Potassium catalyst system for preparing polyurethane based plywood-patch compositions |
摘要 |
A plywood-patching composition is provided based on a noncellular 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 preparing same. The catalysts utilized are relatively non-toxic, yet they promote rapid polymerization with essentially no foaming for a wide variety of non-cellular polyurethane elastomeric applications, particularly in plywood-patch applications where even small amounts of foaming is deleterious to the properties thereof.
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申请公布号 |
US4900776(A) |
申请公布日期 |
1990.02.13 |
申请号 |
US19880278517 |
申请日期 |
1988.12.01 |
申请人 |
GEORGIA-PACIFIC RESINS, INC. |
发明人 |
BOCK, FRANK;AHMAD, MAHFOOZ;DUPRE, JR., FREDERICK C. |
分类号 |
C08G18/22 |
主分类号 |
C08G18/22 |
代理机构 |
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主权项 |
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