2745 Harvey Street
Hudson, WI 54016
Telephone 715-808-0172
    Fax: 715-808-0474
A Leader in Ultra-Fine Particle and Pigment Dispersions 
Since the earliest times humans have valued color to express their emotions and communicate their passions. 
Founded in 2002, RJA has grown to be a key supplier of nano-particle pigment dispersions. 

We don’t make inks. We sell only dispersions to the manufacturers of ink jet inks and coatings for these markets. 
Today, we communicate color with super-wide ink jet printers for applications including airplanes, buses, trade exhibits, shopping malls, packaging, and custom articles and textiles. 
We make colors....

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     RJA Dispersions announces the qualification and release of D3010-W6-65% (65% W6 in 2PEA), D3010-W6-75% (75% W6 in 2PEA), D3410-W6-65% (65% W6 in PONPGDA), and D3410-W6-75% (75% W6 in PONPGDA).  We have also qualified D3330-FX-185, 20% PY185 in IBOA.  

JULY​ 2016
    RJA Dispersions announces the qualification of the following dispersions:  
D1010-B15:4, D1011-V19, D1120-Y120, D1510-Gr 36, D3030-Y185, D3430-Y151, D3511-V19, D3520-Y185, D3530-GR36, and D3530-Y150.

APRIL 2016
     Joseph Ward was a speaker at IMI Europe in Lausanne.  A copy of his 
presentation is attached on the News and Reviews page.

JUNE 2015
    Joseph Ward was a speaker at IMI Europe in Munich.  RJA Dispersions has qualified D1110-Y139, 30% PY139 in PM Acetate, and also qualified D3310-B60, 25% PB 60 in IBOA. 

February 2015    
   Joseph Ward was a speaker at the 2015 IMI Conference in Orlando Florida.  His presentation is attached.

October 2014
     RJA Dispersions has now qualified D1010-R122 (30% PR122 in EB Acetate),  D1010-R146 (30% PR146 in EB Acetate), and D3320-V23 (25% PV23 in IBOA).

June 2014
     RJA Dispersions announces the qualification and release of D1010-JETBLACK
(30% blend of carbon black and organic pigments in EB Acetate to give a jet black), D1020-V23 (30% PV 23 in EB Acetate), D1010-Y180 (30% PY 180 in EB Acetate), D1110-W6 (50% white in PM Acetate), D3020-O64 (25% PO 64 in 2PEA), D3310-R224(BS) (25% blue shade PR 224 in IBOA), and 
D3410-JETBLACK (25% blend of carbon black and organic pigments in PONPGDA to give a jet black).

April 2014
     RJA Dispersions announces the qualification and release of D3410-B60 (25% PB60 in PONPGDA) and D3210-Y120 (25% PY120 in TPGDA).

March 2014
     RJA Dispersions announces the qualification and release of PR 254
in TPGDA and IBOA monomers and the release of yellow-shade PR 224 in IBOA.

December 2013
     RJA Dispersions  announces the release of two sets of pigment dispersions for fixed array heads.  These dispersions are noted for their excellent stability against changes in particle size, color, settling, and viscosity increase with heat aging. These dispesions are the best of the best and should excel as colorants for fixed array ink jet printing inks.  They are available now in the 2-PEA (D3000 series) and the PONPGDA (D3400 series) monomers.  Dispersions in other monomers are availabe upon request.  These dispersions will be noted by the "FX" suffix.  Feel free to contact us for samples.