Organic-inorganic nanocomposite and preparation thereof

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...

Reexamination Certificate

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C524S445000, C524S447000, C524S449000

Reexamination Certificate

active

07115683

ABSTRACT:
The present invention relates to an organic-inorganic nanocomposite and preparation thereof and particularly to a method for preparing an organic-inorganic nanocomposite capable of uniformly dispersing a silicate compound in a polymer medium by adding monomers, an initiator, and an emulsifier to an ion-exchanged layered silicate salt that is prepared by adding a cationic initiator and a cationic chain transfer agent to a layered silicate compound to cause polymerization.

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“Synthesis of Polycarbonate-Layered Silicate Nanocomposites via Cyclic Oligomers”; Authors: Xinyu Huang, Stewart Lewis, William J. Brittain and Richard A. Vala; American Chemical Society; Macromolecules, vol. 33; 2000; pp. 2000-2004.
“Living Free-Radical Polymerization by Reversible Addition-Fragmentation Chain Transfer: The RAFT Process”; Authors: John Chiefari, et al.; American Chemical Society; Macromolecules, vol. 31; 1998; pp. 5559-5562.
PCT International Search Report; International application No. PCT/KR03/00140; International filing date: Jan. 22, 2003; Mailing date: Apr. 8, 2003.

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