Leuco dye coating compositions

Details Leuco dye coating compositions Leuco dye coating compositions

C - Chemistry, Metallurgy

09

B

C09B 57/00 (2006.01) C08L 71/02 (2006.01) C09B 67/04 (2006.01) C09B 67/38 (2006.01) C09D 5/02 (2006.01) C09D 7/12 (2006.01) C09D 171/02 (2006.01) C12Q 1/28 (2006.01) G01N 33/53 (2006.01) G01N 33/531 (2006.01) G01N 33/543 (2006.01) G01N 33/58 (2006.01)

Patent

CA 2157202

A process for making a leuco dye coating composition, comprising the steps of: A. blending a mixture of (a) a leuco Dye, (b) an antioxidant, (c) a [polypoly(ethyleneoxide)--block- poly(propyleneoxide)] nonionic block copolymer surfactant, (d) an alkylarlyoxypoly(alkylene oxide) nonionic surfactant and (e) water; B. milling the blend prepared in step A to prepare a coating composition of the leuco dye in milling media; C. separating the dye coating composition from the milling media.

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