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US 3,971,751 AGranted
Vulcanizable silylether terminated polymer
AssigneeKanegafuchi Kagaku Kogyo Kabushiki Kaisha
InventorsKatsuhiko Isayama, Itaru Hatano
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Abstract
A composition comprising a polyether having silicon end group, which composition is changeable to a rubber-like substance upon exposure to atmospheric moisture at room temperature.
Claims20
A composition comprising a polyether consisting essentially of chemically combined units of the formula --R.sup.III --O--, having a molecular weight of between 500 to 15,000, and terminal silylether groups of the formula ##EQU19## wherein R.sup.I is an alkyl or aryl radical having from 1 to 12 carbon atoms, --R.sup.II --, is a member selected from the group consisting of --CH.sub.2 --, ##SPC5## ##SPC6##
- and --R'--OCH.sub.2 --, wherein R' is a divalent hydrocarbon radical having 1 to 12 carbon atoms and selected from the group consisting of alkylene radicals, cycloalkylene radicals, arylene radicals and aralkylene radicals;
- --R-- is a divalent alkylene radical selected from the group consisting of --CH.sub.2 CH.sub.2 --, ##EQU20## and --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --, X is a member selected from the class consisting of halogen radicals, alkoxy radicals, acyloxy radicals, ketoximato radicals, amino radicals, amide radicals and mercaptide radicals;
- a is a whole number equal to 0, 1 or 2 and b is a whole number equal to 0 to 1.
Dependencies are inferred from the claim text.