Silicone resin composition and molded product thereof

Details Silicone resin composition and molded product thereof Silicone resin composition and molded product thereof

2005-09-21

2008-03-18

Zimmer, Marc S. (Department: 1712)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S319000, C526S321000, C526S323100, C526S323200

Reexamination Certificate

active

07345125

ABSTRACT:
The present invention relates to a silicone resin composition that can be used for a roll film having small birefringence, the silicone resin composition being suitable for, for example, optical applications, and a window material for an automobile, the silicone resin composition having high heat resistance, the silicon resin composition being stained at a low level, the silicone resin composition having a low thermal expansion coefficient, the silicone resin composition enabling a transparent conductive film to be stably formed, and the silicone resin composition providing good winding property. The silicone resin composition contains: A) a silicone resin mainly composed of a polyorganosilsesquioxane having a cage-type structure in a structural unit, the polyorganosilsesquioxane being represented by [RSiO3/2]n(wherein R is an organic functional group having a (meth)acryloyl group and n is 8, 10, or 12); B) an oligomer that is radically copolymerizable with the silicone resin, the oligomer containing an unsaturated group represented by —R3—CR4═CH2or —CR4═CH2in a molecule, and the oligomer having a urethane bond; and C) an other unsaturated compound that is radically copolymerizable with the silicone resin. In the silicone resin composition, the silicone resin, the oligomer, and the other unsaturated compound are compounded at a weight ratio of 5 to 80:1 to 50:0 to 80.

REFERENCES:
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Machine translation of JP 2004-143449.
“Structure-Property Relationships in Organic-Inorganic Nanomaterials Based on Methacryl-POSS and Dimethacrylate Networks”, Bizet et al., Macromolecules, 2006, 39, 2574-2583.
Hydrosilylation of allyl Alcohol with [HSiMe2OSi1.5]8: Octa(3-hydroxypropyldimethylsiloxy)octasilsesquioxane and its Octamethacrylate Derivative as Potential Precursors to Hybrid Nanocomposites, Zhang et al., J. Am. Chem. Soc. 2000, 122, 6979-6988.
Abstract for “Organic/Inorganic Hybrid Materials Based on Silsesquioxanes Derived from (3-methacryloxypropyl)trimethoxysilane and Their Blends with Vinyl Ester Resins” Fanovich et al., Journal of sol Gel Science and Technology (2002), 23(1), 43-52.

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