Polyorganosiloxane and curable composition containing same

Details Polyorganosiloxane and curable composition containing same Polyorganosiloxane and curable composition containing same

2005-08-02

2009-08-18

Gulakowski, Randy (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Compositions to be polymerized by wave energy wherein said...

C522S148000, C549S214000, C528S029000

Reexamination Certificate

active

07576142

ABSTRACT:
The object of the present invention is to provide a polyorganosiloxane that has a specific structure and is superior to curability and a curable composition which is high in workability during curing, which leads to a cured product excellent in ultraviolet-ray transparency and heat resistance, and further wherein toughness thereof and occurrence of a crack by cyclic heat-cool are improved. The present polyorganosiloxane is one obtained by conducting hydrolysis and condensation of a silicon-containing organic compound represented by the general formula (1) below in the presence of an organic polyol compound having two or more hydroxyl groups and has an oxetanyl group.

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Fogiel, M., Organic Chemistry I (Super Review,All you need to know), 2000, Research and Education Association, p. 265.□□(Polyol).

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