Washable overwriters

Details Washable overwriters Washable overwriters

C - Chemistry, Metallurgy

09

D

C09D 11/16 (2006.01) B05D 5/06 (2006.01) B44D 2/00 (2006.01) B44F 1/10 (2006.01) C09D 11/00 (2006.01)

Patent

CA 2152547

A washable multiple coloring composition system is disclosed whose coloring effect is changed upon treatment with a second coloring composition, once the second coloring composition has been deposited over the undercolor coloring composition. The washable multiple ink system comprises: (a) an undercolor aqueous coloring composition comprising a compatable surfactant in an amount sufficient to provide washability and an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater and/or by a reducing agent; and (b) an overcolor aqueous coloring composition comprising a compatable surfactant in an amount sufficient to provide washability, a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and/or a reducing agent, a base in an amount sufficient to yield a pH of the overcolor composition of about 10 or greater, and/or a reducing agent.

Affiliated with

Also associated with

Rating

Washable overwriters does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Washable overwriters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Washable overwriters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1419432