Process for producing polymer nanodispersions

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

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C524S457000, C524S609000, C257S040000, C106S013000, C106S011000

Reexamination Certificate

active

07816469

ABSTRACT:
This disclosure is generally directed to a batch process of producing semi-conductive polymer nanodispersions in which a composition comprising a liquid and a polymer is at least partially dissolved in the liquid, resulting in dissolved polymer molecules in the composition, wherein the dissolution occurs in a dissolution vessel. The solubility of the dissolved polymer molecules in the composition is then increased to increase the concentration of dissolved polymer in the composition to a range from about 0.1% to about 30% based on a total weight of the polymer and the liquid, wherein increasing the solubility of the dissolved polymer in the composition occurs in a dissolution vessel. The dissolved polymer in the composition is then diluted with a diluent, wherein the dissolution of the dissolved polymer in the composition occurs by addition of the composition to the diluent in a precipitation vessel.

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Jul. 19, 2010 Canadian Office Action issued in corresponding Canadian Application No. 2,613,693.

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