Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Patent
1994-07-15
1996-03-26
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
528 21, C08G 7708
Patent
active
055021441
ABSTRACT:
Compositions and a method for performing the room temperature vulcanization of silicone elastomers are disclosed. The compositions and method utilize specifically-defined hydroxy-terminated polyorganosiloxanes, cross-linking agents which contain a hydrolyzable moiety, a catalyst which exhibits catalytic action in the condensation reaction between the hydroxy groups of the polyorganosiloxanes and the hydrolyzable groups of the cross-linking agents, and a formamide-type cure accelerator component. It has been found that these compositions can be stably stored under substantially moisture-free conditions and be readily vulcanized to form solid elastomers when exposed to moisture in the air. The vulcanization process provides a fast cure and a final silicone rubber product which exhibits good depth of hardening and excellent physical properties.
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Clarson Stephen J.
Kuo Chung-Mien
Marquis Melvyn I.
Three Bond Co. Ltd.
University of Cincinnati
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