Colloid systems and wetting agents; subcombinations thereof; pro – Continuous liquid or supercritical phase: colloid systems;... – Aqueous continuous liquid phase and discontinuous phase...
Reexamination Certificate
2007-07-11
2011-10-11
Choi, Ling (Department: 1763)
Colloid systems and wetting agents; subcombinations thereof; pro
Continuous liquid or supercritical phase: colloid systems;...
Aqueous continuous liquid phase and discontinuous phase...
C106S286400
Reexamination Certificate
active
08034846
ABSTRACT:
It is intended to provide a stable sol containing zirconium oxide-tin oxide composite colloids to be used for improving the performance such as abrasion resistance, transparency, adhesiveness, water resistance or weather resistance of a dried film obtained by applying a hard coating agent containing colloidal particles to the surface of plastic lens. A production method includes the steps of obtaining a sol containing colloidal particles (A1) in which the surface of particles in a sol containing hydrothermally-processed zirconium oxide-tin oxide composite colloids (A) is coated with amine-containing Sb2O5colloidal particles; obtaining a sol containing colloids (A2) coated with amine-containing Sb2O5colloidal particles by performing a hydrothermal treatment at a temperature of from 200 to 350° C.; and mixing the sol containing the colloidal particles (A2) and a sol containing tungsten oxide-tin oxide-silicon dioxide composite colloidal particles (B2) and aging the resulting aqueous medium at 20 to 100° C.
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Asada Motoko
Koyama Yoshinari
Choi Ling
Nissan Chemical Industries Ltd.
Oliff & Berridg,e PLC
Wang Chun-Cheng
LandOfFree
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