Fluorine based aqueous dispersion, process for preparing the sam

Details Fluorine based aqueous dispersion, process for preparing the sam Fluorine based aqueous dispersion, process for preparing the sam

1992-05-20

1993-09-07

Schofer, Joseph L.

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...

524547, 524548, C08J 2712

Patent

active

052429725

ABSTRACT:
Disclosed are a matte fluorine based aqueous dispersion containing, as the resin component, a reaction product of a fluorine based polycarboxylic acid resin with an epoxysilane compound; a process for preparing the fluorine based aqueous dispersion, which process comprises dissolving or dispersing the fluorine based polycarboxylic acid resin and an alicyclic epoxysilane compound in an organic solvent to form an organic solution or organic dispersion, followed by heating and reacting until an acid value of the fluorine based polycarboxylic acid resin is reduced by one or more, incorporating a neutralizing agent and by dispersing in water, or which process comprises dissolving or dispersing the fluorine based polycarboxylic acid resin in an organic solvent to form an organic solution or organic dispersion, followed by adding an aliphatic epoxysilane compound after or before neutralization, dispersing in water, provided after neutralization when the aliphatic epoxysilane compound is added before neutralization, to form an aqueous dispersed system, and heating and reacting the aqueous dispersed system until the acid value of the fluorine based polycarboxylic acid resin is reduced by one or more; and a fluorine based matte anionic electrodeposition coating composition containing the fluorine based aqueous dispersion.

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