Printing ink composition
AssigneeAvecia Limited
InventorsKathryn Carr, Mark Holbrook, Ian Ferguson
Life of this patent
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Abstract
A process for preparing an optical filter comprising a colored cross-linked polymeric coating on a transparent substrate, which comprises applying to the substrate, by a printing process, a mixture comprising one or more polymer precursor(s), and one or more dye(s) having one or more heterocyclic NH group(s) or one or more substituent (s) capable of forming a covalent bond with the polymeric precursor, and thereafter using the mixture. The invention also provides formulations comprising one or more polymer precursors and dyes, optical filters, and a novel dye.
Claims9
An ink comprising
- (a) one or more cross-linkable polymer precursor(s) selected from cross-linkable forms of:
- acrylamides, epoxides, epoxy resins, acrylamide/epoxy resin systems, melamine formaldehyde resin condensates, polyesters, alkyd resins, hydroxylated or carboxylated acrylics, hydroxylated acrylic-melamine formaldehyde systems;
- and
- (b) one or more dye(s) having at least one substituent capable of forming a covalent bond with a group of at least one of the polymer precursor(s) and where each substituent is attached to the dye either directly or via optionally substituted alkyl or aryl groups;
- the substituents being selected from:
- —OH;
- —NH2, —NHalkyl;
- —SH;
- —COOH, —COOalkyl;
- epoxy;
- —COalkenyl;
- and —NHCOalkenyl;
- (c) a liquid medium comprising water or an organic liquid or a mixture thereof;
- and
- (d) a surfactant.
A composition comprising
- (a) one or more cross-linkable polymer precursor(s) selected from cross-linkable forms of:
- acrylamides, epoxides, epoxy resins, acrylamide/epoxy resin systems, melamine formaldehyde resin condensates, polyesters, alkyd resins, hydroxylated or carboxylated acrylics, hydroxylated acrylic-melamine formaldehyde systems;
- and
- (b) one or more dyes of Formula:
- in which Q is a meta or para linked group of Formula:
A composition comprising
- (a) one or more cross-linkable polymer precursor(s) selected from cross-linkable forms of:
- acrylamides, epoxides, epoxy resins, acrylamide/epoxy resin systems, melamine formaldehyde resin condensates, polyesters, alkyd resins, hydroxylated or carboxylated acrylics, hydroxylated acrylic-melamine formaldehyde systems;
- and
- (b) one or more dyes of Formula:
- in which:
- R15 is phenyl, —CH2CN or —CN;
- R16 is C1-4-alkyl;
- and
- R17 is —H or phenyl.
Dependencies are inferred from the claim text.