April 18, 2024.  Structural Color.

Sparxell has raised $3.2 million to fund development of its structural colored pigments based on cellulose. Sparxell uses a patented technology to control the interactions between crystals during controlled drying of crystalline cellulose suspensions.  By controlling the interactions different colors can be acheived.  The dried films obtained can be ground into pigments. 

1.  Business Roundup (acs.org)  C&EN Business Roundup, Volume 102, Issue 11, April 8 2024.

2.  Technology based on the latest material science innovation (sparxell.com)  Technology Page of Sparxell Website. 

May 3, 2024.  Structural Color.

I had the opportunity to meet up with John Book, Vice President of Business Development for Cypris Materials, Inc., at the American Coatings Show in Indianapolis this week.  We had a good discussion, and John provided me with a drawdown of several colors developed with Cypris technology.  The colors, of course, are generated through the interaction of light with structures formed by self-assembling brush block copolymers. The colors in the picture were achieved by blending just two different block copolymers in varying ratios….no pigments, no dyes and no need for a unique block copolymer for each color.