Patent
Dispersion of pigments in resins and coatings systems
Jorge A Ayala,George A Joyce +1 more
TLDR
A pigment dispersion of enhanced viscosity and heat stability characteristics for use in coating systems is provided in this paper, which comprises a pigment carrier, a pigment of the type having a hydrophilic surface, and a surfactant functional as a dispersant in a relatively non polar matrix and which is present on the surface of the pigment in an effective amount.Abstract:
A pigment dispersion of enhanced viscosity and heat stability characteristics for use in coating systems is provided. The pigment dispersions generally comprise a pigment carrier, a pigment of the type having a hydrophilic surface, and a surfactant functional as a dispersant in a relatively non polar matrix and which is present on the surface of the pigment in an effective amount. Pigment carriers include water-based carriers and organic solvent-based carriers. Finished coatings having improved viscosity and heat stability are also provided. The finished coatings comprise a coating base and the surfactant treated pigments. Such pigments include iron oxide pigments yellow iron oxide pigment, black iron oxide pigment, divalent ferrite pigments, zinc ferrite pigment, and magnesium ferrite pigment. Such surfactants include trimethylol propane, and trimethylol ethane.read more
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Surface modified particles and method of making the same
Supplee William W,Will James T +1 more
TL;DR: In this article, a pigment or filler particle whose surface is coated with an electric charge modifying agent and at least one dispersion promoting agent has improved dispersibility, coloring, handling, and other processing properties in application systems.
Patent
Magnetic paint or ink additive
TL;DR: Magnetic paint or ink additives are formulated from ferromagnetic particles, preferably iron powder, having a mixed particle range of from about 0.01μ to about 297μ, and preferably to about 250M and more, with 6 to 20μ particles are used in one latex-based embodiment.
Patent
Additive-containing synthetic filaments, and yarns and carpets including such filaments
Frank R. Jones,Stanley A. McIntosh,Gary A. Shore,Karl H. Buchanan,David B. Ledford,Wayne S. Stanko,G. Daniel Gasperson,Charles F. Helms +7 more
TL;DR: In this article, a nonaqueous additive system having dispersant-coated pigments physically dispersed in a liquid non-aqueous polymeric carrier is described, which can be added in metered amounts (dosed) to a melt flow of the polymeric host material prior to being spun into filaments.
Patent
Roofing granules, roofing products including such granules, and process for preparing same
TL;DR: In this article, a coating composition including an inorganic sol material and an organic colorant is applied to mineral particles and cured at a temperature less than 200 degrees Celsius, which is the temperature at which the solvents are removed.
Patent
Aqueous coating compositions having improved transparency
TL;DR: Transparent iron oxide pigment dispersions which produce waterborne coating compositions having excellent transparency and reduced haze are provided in this paper, where the dispersions contain dispersed pigment, an aqueous carrier, and a mixture of water-dispersible acrylic copolymer dispersants.
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Patent
Treatment of titanium dioxide and other pigments to improve dispersibility
TL;DR: In this paper, the treatment of particulate titanium dioxide and other pigments with a surfactant compound which serves to enhance its employment in pigmented and/or filled paints and plastics, paper making compositions and in reinforced plastic composite compositions is described.
Patent
Pigments dispersible in plastics
James Howard,Oscar J. Gombar +1 more
TL;DR: In this article, pigments are mixed with a combination of waxy materials such as natural, synthetic, or petroleum waxes and polyethylene glycols or hydrocarbon resins.
Patent
Titanium dioxide pigment treated to suppress yellowing in polymers
TL;DR: In this paper, a method for treating a pyrogenic titanium dioxide pigment in order to reduce yellowing when such pigment is incorporated into a polymeric composition comprising adding to such pigment an addition system which comprises: (a) an organophosphate/alkanolamine addition product, and (b) a polyol.
Patent
Process for the production of yellow-brown zinc ferrite pigments
Jakob Dipl Chem Dr Rademachers,Karlheinz Dipl Chem Dr Turban,Gerhard Dr. Franz,Werner Dr Fuhr,Bernd Dipl Chem Dr Holle +4 more
TL;DR: In this paper, a process for the production of an anisometric yellow-brown zinc ferrite pigment comprising homogeneously mixing zinc oxide having a specific BET surface of more than 2 m 2 /g with needle-shaped α-FeOOH obtained from an iron salt solution by mixing with alkali and subsequently oxidizing in a nucleation and pigment growth stage was described.