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US 2010/0063186 A1Published application
Washable ink compositions and writing instruments comprising same
AssigneeSanford, L.P.
InventorClement N. ONYENEMEZU
Life of this patent
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Abstract
The disclosure is generally related to a washable ink composition and a writing instrument containing the same. The disclosure provides a washable ink composition that includes a pigment capsule having a polymer matrix formed of a resin selected from the group consisting of aminoplast resins, epoxy resins, and combinations thereof, and at least one colorant contained in the polymer matrix; and at least one washing aid having at least 4 ethylene oxide units per molecule of washing aid and/or at least one washing aid having an HLB value of at least 12.
Claims29
A washable ink composition comprising:
- (a) at least one pigment capsule comprising a polymer matrix formed of a resin selected from the group consisting of aminoplast resins, epoxy resins, and combinations thereof;
- and at least one colorant contained in the polymer matrix;
- and,
- (b) at least one washing aid comprising at least 4 ethylene oxide units per molecule of washing aid.
1 more element
A washable ink composition comprising:
- (a) at least one pigment capsule comprising a polymer matrix formed of a resin selected from the group consisting of aminoplast resins, epoxy resins, and combinations thereof;
- and at least one colorant contained in the polymer matrix;
- and,
- (b) at least one washing aid having a hydrophilic-lipophilic balance (HLB) value of at least 12.
1 more element
Dependencies are inferred from the claim text.