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MOISTURE CURABLE SYSTEMS BASED ON POLYSILYLATED POLYETHERS AND TITANIUM (IV) CATALYSTS AND/OR ZINC/CYCLIC AMIDINE CATALYST MIXTURES
MOISTURE CURABLE SYSTEMS BASED ON POLYSILYLATED POLYETHERS AND TITANIUM (IV) CATALYSTS AND/OR ZINC/CYCLIC AMIDINE CATALYST MIXTURES
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机译:基于聚硅烷化的聚乙烯和钛(IV)催化剂和/或锌/环戊二烯催化剂混合物的可湿固化体系
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摘要
Moisture-curable polysilylated polyether compositions contain titanium (IV) catalysts and/or zinc/amidine catalyst mixtures and are devoid of or nearly devoid of tin compounds. The titanium catalysts and zinc/amide catalyst mixtures are surprisingly found to be highly effective, even when the moisture-curable silane groups of the compositions are dialkoxysilyl groups. The moisture-cured compositions are surprisingly stable when aged at high temperatures. In addition, the compositions are surprisingly storage-stable in the uncured state, particularly when the polysilylated polyethers contain aliphatic urethane groups. The polyether compositions are also preferably devoid of aminosilane adhesion promoters.
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