Synthesis and characterization of novel cyclosiloxanes and...

Details Synthesis and characterization of novel cyclosiloxanes and... Synthesis and characterization of novel cyclosiloxanes and...

2005-08-22

2009-08-04

Zimmer, Marc S (Department: 1796)

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

Synthetic resins

From silicon reactant having at least one...

C556S460000

Reexamination Certificate

active

07569652

ABSTRACT:
The present invention is directed to syntheses of cyclolinear networks. Two novel cyclic siloxanes were used as starting materials. The cyclic siloxanes are self-condensed and co-condensed with silanol-terminated polydimethylsiloxane to vinyl-terminated cyclolinear polymers. Cyclolinear networks can be synthesized by hydrosilylation of vinyl-terminated cyclolinear polyorganosiloxanes with a copolymer of dimethylsiloxane and methylhydrosiloxane.

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Makarova, N.N., Mesomorphic Cyclolinear Organosiloxane and Organocarbosiloxane Block Copolymers, Polymer Science, 1993.
Makarova, N.N., Liquid Crystalline Cyclochain Organosilicon Compounds, Prog. Polym. Sci., vol. 22, pp. 1001-1052, 1997, Great Britain.
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Makarova, N.N., Synthesis and Structure of Cyclolinear Polyorganosiloxanes, Polymer Science, vol. 37, 1995.

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