Invention Application
US20150252233A1 PHOSPHINE-CATALYZED. MICHAEL ADDITION-CURABLE SULFUR-CONTAINING POLYMER COMPOSITIONS 有权
磷酰胺催化。 MICHAEL添加可固化含硫聚合物组合物

PHOSPHINE-CATALYZED. MICHAEL ADDITION-CURABLE SULFUR-CONTAINING POLYMER COMPOSITIONS
Abstract:
Compositions comprising Michael acceptor-terminated sulfur-containing prepolymers, thiol-terminated sulfur-containing prepolymers, and e phosphine catalysts useful in aerospace sealant applications are disclosed. The compositions exhibit extended pot life, cure rapidly following activation, and provide cured sealants having improved properties useful in aerospace sealant applications.
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