Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1993-05-20
1995-01-31
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523200, 524413, 524414, 524416, 524547, 524497, C08J 303, C08K 322, C08K 332, C08L 4302
Patent
active
053859600
ABSTRACT:
Coatings compositions including stable composite latex-pigment particles are prepared by dispersing titanium dioxide pigment particles in a first aqueous medium and preparing a dispersion of selected polymeric latex particles, which have at least one dihydrogen phosphate functional group, in a second aqueous medium. The media are mixed and the selected polymeric latex particles adsorb on the titanium dioxide particles. Dibasic phosphate is then provided to the mixture to stop adsorption and stabilize the composite particles. The coating composition gives a coating with improved hiding.
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International Search Report PCT/US92/09731.
Emmons William D.
Finch William C.
Morgan Meredith A.
Merriam Andrew E. C.
Michl Paul R.
Rohm and Haas Company
Taylor Wendy A.
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