Color changing compositions for use on non-porous surfaces
First Claim
1. A multiple coloring composition system comprising:
- (a) an undercolor aqueous coloring composition comprising a first film forming resin and an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater; and
(b) an overcolor aqueous coloring composition comprising a second film forming resin, a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and an effective amount of a base sufficient to yield a pH of said overcolor aqueous coloring composition of about 10 or greater.
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Abstract
A multiple coloring composition system for use on non-porous surfaces 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 multiple ink system comprises:
(a) an undercolor aqueous coloring composition comprising a film forming resin 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 film forming resin, 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.
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Citations
37 Claims
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1. A multiple coloring composition system comprising:
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(a) an undercolor aqueous coloring composition comprising a first film forming resin and an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater; and (b) an overcolor aqueous coloring composition comprising a second film forming resin, a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and an effective amount of a base sufficient to yield a pH of said overcolor aqueous coloring composition of about 10 or greater. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A multiple coloring composition system comprising:
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(a) an undercolor aqueous coloring composition comprising a first film forming resin and an undercolor dye whose coloring ability is destroyed in the presence of a reducing agent; and (b) an overcolor aqueous coloring composition comprising a second film forming resin, a colorant capable of maintaining its characteristic color in the presence of a reducing agent and an effective amount of a reducing agent sufficient to destroy the coloring ability of said undercolor dye. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. An ink composition system comprising:
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(a) an undercolor aqueous ink comprising from about 0.1% to about 5% by weight of said undercolor ink of a first film forming resin and from about 0.1% to about 15% by weight of said undercolor ink of an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater or in the presence of a reducing agent; and (b) an overcolor aqueous ink comprising from about 0.1% to about 5% by weight of said overcolor ink of a second film forming resin, from about 1% to about 20% by weight of said overcolor ink of a reducing agent;
from about 0.1% to about 10% by weight of said overcolor ink of a base; and
from about 0.1% to about 15% by weight of said overcolor ink of an overcolor colorant which maintains its characteristic color in the presence of a reducing agent and in the presence of a pH of about 10 or greater.
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36. A color changing marking system comprising at least an undercolor marking instrument and an overcolor marking instrument, said undercolor marking instrument comprising a nib and an ink reservoir containing an undercolor ink composition comprising from about 0.1% to about 5% by weight of said undercolor ink of a first film forming resin and from about 0.1% to about 15% by weight of said undercolor ink of an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater or in the presence of a reducing agent;
- and said overcolor marking instrument comprising a nib and an ink reservoir containing an overcolor ink composition comprising from about 0.1% to about 5% by weight of said overcolor ink of a second film forming resin, from about 1% to about 20% by weight of said overcolor ink of a reducing agent;
from about 0.1% to about 10% by weight of said overcolor ink of a base; and
from about 0.1% to about 15% by weight of said overcolor ink of an overcolor colorant which maintains its characteristic color in the presence of a reducing agent and in the presence of a pH of about 10 or greater.
- and said overcolor marking instrument comprising a nib and an ink reservoir containing an overcolor ink composition comprising from about 0.1% to about 5% by weight of said overcolor ink of a second film forming resin, from about 1% to about 20% by weight of said overcolor ink of a reducing agent;
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37. A multiple coloring composition system comprising:
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(a) a first undercolor aqueous coloring composition comprising a first film forming resin and an undercolor dye whose coloring ability is destroyed in the presence of a pH of about 10 or greater; (b) a second undercolor aqueous coloring composition comprising a second film forming resin and an undercolor dye whose coloring ability is destroyed in the presence of a reducing agent; and (c) an overcolor aqueous coloring composition comprising a third film forming resin, a colorant capable of maintaining its characteristic color in the presence of a pH of about 10 or greater and in the presence of a reducing agent, and an effective amount of a base sufficient to yield a pH of said overcolor aqueous coloring composition of about 10 or greater, and from about 1% to about 20% by weight of a reducing agent.
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Specification