US2017158870A1PendingUtilityA1

Novel Powder Coloring System

63
Assignee: VALSPAR SOURCING INCPriority: Oct 21, 2005Filed: Nov 17, 2016Published: Jun 8, 2017
Est. expiryOct 21, 2025(expired)· nominal 20-yr term from priority
Inventors:George W. O'DellLarry B. BrandenburgerSteven D. JohnsonJudith L. Bourdeau
C09D 7/1283C09D 7/1216C09D 5/035C09D 167/00C09D 167/02C08J 2467/00C09D 7/69C09D 7/61C09D 5/03
63
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Claims

Abstract

A method for coloring powders is provided that includes mixing a base powder and non-incorporated pigments. A colored powder composition having a base powder particle and at least a partial shell of non-incorporated pigments about the base powder particle is also provided. Articles having a coating of the colored powder composition are also provided.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 - 20 . (canceled) 
     
     
         21 . A powder coating composition, comprising:
 a plurality of powder particles, comprising:
 a base powder particle with a median particle size of about 25 to 150 μm; and 
 at least a partial shell of non-incorporated white and colored pigment particles associated with the base powder particle. 
   
     
     
         22 . The composition of  claim 21 , wherein the base powder particle has a median particle size of 30 to 70 μm. 
     
     
         23 . The composition of  claim 21 , wherein the base powder particle has a median particle size of 30 to 50 μm. 
     
     
         24 . The composition of  claim 21 , wherein the partial shell of non-incorporated white pigment particles comprises at least 4,500 non-incorporated white pigment particles. 
     
     
         25 . The composition of  claim 21 , wherein the partial shell of non-incorporated white pigment particles comprises at least 9,000 non-incorporated white pigment particles. 
     
     
         26 . The composition of  claim 21 , wherein the white pigment is selected from the group consisting of titanium dioxide, HALOW, powders of zinc sulfide and barium sulphate, aluminum phosphate nanoparticles, and zinc oxide. 
     
     
         27 . The composition of  claim 21 , wherein the white pigment is titanium dioxide. 
     
     
         28 . The composition of  claim 21 , wherein the composition is a free-flowing powder. 
     
     
         29 . The composition of  claim 21 , wherein the base powder is not colored. 
     
     
         30 . The composition of  claim 21 , wherein the base powder is colored.

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