Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2006-10-24
2006-10-24
Jagannathan, Vasu (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C523S400000, C523S443000, C524S445000, C524S446000, C524S447000, C524S449000, C428S402000, C252S37800R
Reexamination Certificate
active
07125916
ABSTRACT:
The present invention relates to an exfoliating agent and to a process for producing random form of nanoscale silicate plates. Two types of exfoliating agents are applied in the present invention, which respectively have the formula:wherein R is a polyoxybutylene group, polyoxypropylene group, poly(oxyethylene/oxypropylene) group, or polyoxyethylene group. In this invention, layered silicate clays are exfoliated into random silicate plates by acidifying AMO or AEO with inorganic acid, adding the acidified AMO or AEO to layered silicate clay with agitation, and adding sodium hydroxide or chloride of alkali metal or alkaline-earth metal, in ethanol, water and a hydrophobic organic solvent to the intermediate product and repeating phase separation procedures to isolate random silicate plates from water phase.
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Chu Chien-Chia
Lin Jiang-Jen
David Pai Chao-Chang
Jagannathan Vasu
National Chung-Hsing University
Pai Patent & Trademark Law Firm
Ronesi Vickey
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