Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1990-08-31
1991-11-19
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524386, 528 15, 528 31, 528 32, 528 12, 528 26, 528 20, C08K 505
Patent
active
050666991
ABSTRACT:
The present invention provides microencapsulated liquid or solubilized curing catalysts for one-part heat curable organosiloxane compositions. The curing catalysts are prepared by the photoinitiated polymerization of at least one solubilized hydroxyl-containing ethylenically unsaturated organic compound in the presence of a photoinitiator for the polymerization of said compound, an optional surfactant, and a liquid or solubilized curing catalyst for organosiloxane compositions. The curing agent is in the form of coordination complex with an ethylenically or acetylenically unsaturated organic compound and the solvent for the polymerization reaction is a mono- or polyhydric alcohol. At least a portion of the present microcapsules are less than one micron in diameter, and substantially all are less than about three microns in diameter. Compositions containing the preferred platinum group metals as catalysts are optically transparent.
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Lee Chi-Long
Yeh Ming-Hsiung
Dow Corning Corporation
Glass Margaret W.
Marquis Melvyn I.
Spector Robert
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