The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1998
Filed:
Jun. 24, 1996
Applicant:
Inventors:
George M Crews, Gonzales, LA (US);
Ji Shen, Donaldsonville, LA (US);
Assignee:
Melamine Chemicals, Inc., Donaldsonville, LA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
264-5 ; 528232 ; 528256 ;
Abstract
Spherical porous polymer pigment beads of melamine formaldehyde resin with uniform diameter were prepared by a water-in-oil emulsion polymerization of colored methylolmelamine aqueous solution. The dyes combined with methylolmelamine to give an excellent hue stability. The pigmented melamine formaldehyde beads (PMFB) with mean size of 3-6 micron as an organic pigment showed excellent weather and heat stability, chemical resistant properties and disperability in an application medium.