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Multi-colored lustrous pearlescent pigments

A pearlescent pigment, pigment technology, applied in the direction of pigment preparation, fibrous filler, drug combination, etc., can solve the problem of limited magnetic pigment and so on

Inactive Publication Date: 2010-08-04
SUN CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, magnetic pigments are very limited in terms of color space

Method used

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  • Multi-colored lustrous pearlescent pigments
  • Multi-colored lustrous pearlescent pigments
  • Multi-colored lustrous pearlescent pigments

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Example 1: FeCl for depositing readily reducible FeOOH layer 3 -Urea homogeneous hydrolysis method

[0084] • Add 0.1 M HCl solution (356.9 g) to a 500 ml cylindrical reaction vessel paddle (for gentle stirring and non-stick properties). The solution was stirred at 175 RPM. 7.1 g of 45%wt FeCl 3 Stock solution (Riedel 12322, 45% wt FeCl 3 , 55% water) was added dropwise to the reactor.

[0085] • Urea (16 g) was slowly added to the reactor with agitation.

[0086] • Add Sky Chemical Russet Pigment (20 g) to the reactor and stir for 5 minutes.

[0087] • The temperature was raised to 80°C at 2°C / min and maintained for 4 hours.

[0088] • The pigment is recovered by filtration and washed with distilled water.

Embodiment 2

[0089] Embodiment 2: the aqueous phase hydrogenation method of solid-solid catalysis

[0090] Step 1 - Wet Micronization of Catalyst

[0091] Platinum oxide powder (200mg, 10-50 micron grade, Aldrich 206032) in 100g PEG400 (i.e. 2mg PtO 2 / g fluid).

[0092] • The slurry was loaded into an Eiger-Mill apparatus with 0.5mm zirconia media and water cooling jacket. Power was set to maximum and run for 6 hours. The final slurry was dark green and did not settle for about 1 to 2 days.

[0093] • Particle size was checked with Dynamic Light Scattering (Horiba DLLS Particle Sizer) and OM (Optical Microscopy, Nikon) to ensure that no particles larger than 1 micron were left.

[0094] Step 2 - Hydrogenation

[0095] PEG 400 (100 g), FeOOH (20 g) coated red pearly pigment (i.e. SkyChemical Super Russet) and 3 g of micronized PtO from step 1 2 The slurry (2 mg catalyst / g fluid) was fed into a hydrogenation chamber of steel construction.

[0096] • The stirrer is lowered into the ...

Embodiment 3

[0106] Embodiment 3: Preparation of homogeneous platinum colloidal nanoparticle catalyst

[0107] • Polyvinylpyrrolidone (PVP) reducing agent solution: Anhydrous ethylene glycol (80 g) and K15 PVP (10 g, Fluka 81390 or ISP) were mixed with a Hauschild mixer at 3000 RPM until dissolved. This mixture was added to a 1 L 3.5" Teflon coated cylindrical reactor with a 2" PTFE coated 3-blade paddle and a nitrogen purge line.

[0108] Precursor solution: anhydrous ethylene glycol (80g) and H 2 PtCl 6 -6H 2 O salt (0.5 g, SAC3044) was added to a 4 oz jar with a magnetic stir bar and stirred until dissolved. The liquid was sonicated for 10 minutes to remove oxygen and then added to the PVP reducing agent solution.

[0109] • Mixing of precursor and reducing agent: Anhydrous ethylene glycol (80 g) was added to the reaction vessel followed by agitation at approximately 200 RPM to gently mix the precursor and reducing agent at room temperature. N 2 The purge line is lowered to just...

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Abstract

A pearlescent pigment, wherein the pigment is an inorganic material and the color of a homogeneous coating of the pigment, measured over a white background, is selected from the group consisting of: a CIELAB L* value of about 30 or less and a chroma value of about 3 or less; a CIELAB hue angle, hab, from about 50 to about 80 degrees, wherein L* is not more than about 85, and the chroma value is greater than 22; a CIELAB hue angle, hab, from about 80 to about 275 degrees, wherein L* is not more than about 80, and the chroma value is greater than about 10; and a CIELAB hue angle, hab, from not less than about 275 to not more than about 50 degrees, wherein L* is not more than about 85, and the chroma value is greater than about 9. The pigments may be used in a variety of applications including cosmetics, plastics, automotive, or architectural coatings.

Description

[0001] Cross References to Related Applications [0002] This application hereby claims a continuation-in-part of patent application serial numbers 11 / 931534, 11 / 931415, 11 / 931473, 11 / 931658 filed on October 31, 2007 and non-provisional patent application serial number 11 filed on June 20, 2007 / 765614, the disclosures of which are incorporated herein by reference in their entirety. Background technique [0003] The present invention generally relates to polychromatic bright pearlescent pigments. [0004] Along with precious stones (such as diamonds, rubies, emeralds, topaz, opals, jade) and precious metals (such as gold, silver, platinum), pearls were among the most precious possessions (or luxuries) of man during the Golden Age. In addition to their natural beauty, bright color and luster, they are often associated with social status and happiness levels. Therefore, and not surprisingly, the trend in cosmetics is to imitate or recreate these "natural" and "aesthetic" featu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/06C01G49/08C09C1/00
CPCC09C1/0015C01G49/06C01G49/08C09D5/36C01P2006/62C01P2006/65C09C2220/106C01P2006/66C01P2006/42C09C2200/1004C09C2200/102A61P1/04
Inventor 阿伦·M·霍尔曼斯特凡·尼古拉斯菲利普·斯科特兰马奎利特·德贝克奥雷利·安托诺维茨林辉海
Owner SUN CHEM CORP
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