Sol bonded colorant clusters and process for making

Details Sol bonded colorant clusters and process for making Sol bonded colorant clusters and process for making

C - Chemistry, Metallurgy

09

B

C09B 67/20 (2006.01) C09B 63/00 (2006.01) C09B 67/02 (2006.01) C09C 1/00 (2006.01) C09C 3/00 (2006.01) C09C 3/04 (2006.01) C09D 5/33 (2006.01) C09D 7/12 (2006.01)

Patent

CA 2125573

2125573 9315152 PCTABS00024 Colorant clusters comprising an aggregation of a plurality of grains of sol-derived material and colorant. The clusters are particularly useful as colorants in liquid compositions, e.g., paints and inks, for forming coatings that are retroreflective immediately upon drying. Also, a process for preparing such colorant clusters comprising admixing colorant in a binder sol to yield a pigment sol and then removing liquid medium from the pigment sol to yield the clusters. Also, a coating composition comprising retroreflective elements, a vehicle, and the aforementioned colorant clusters. After application of the composition to a substrate, the resultant coating is immediately retroreflective upon drying.

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