Preparation of pigmented melamine-formaldehyde polymer beads

Details Preparation of pigmented melamine-formaldehyde polymer beads Preparation of pigmented melamine-formaldehyde polymer beads

1996-06-24

1998-08-18

Mullis, Jeffrey C.

Plastic and nonmetallic article shaping or treating: processes

Formation of solid particulate material directly from molten...

528232, 528256, C08G 1232

Patent

active

057955077

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.

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