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1. WO1997045495 - USE OF STABLE AMINO-FUNCTIONAL LATEXES IN WATER-BASED INKS

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[ EN ]

Claims- 1. A water-based ink composition comprising a pigment and a polymer latex selected from a polymeric (polyamino) enamine latex, and a mixture of a polymeric (polyamino) enamine latex and an acetoacetoxy-functional polymer latex, wherein the polymeric
(polyamino) enamine is the reaction product of a surfactant-stabilized acetoacetoxy-functional polymer and a poly(alkylenιmme).
2. An ink composition of claim 1 , wherein the polymer latex is a polymeric
(polyamino) enamine latex
3 An ink composition of claim 2, wherein the surfactant-stabilized acetoacetoxy-functional polymer comprises about 1 to about 40 weight percent of a monomer of Formula

(IV
R'-CH=C(R2)C(0)-X'-X2-X3-C(0)-CH2-C(0)-R3 ( 1 )

where R1 is a hydrogen or halogen; R2 is a hydrogen, halogen, C,-Cύ alkylthio group, or C,-C6 alkyl group; R3 is a C,-C6 alkyl group; X1 and X3 are independently O, S, or a group of the formula -N(R')-, m which R' is a C,-C6 alkyl group; X2 is a CrCl2 alkylene group or C,-C,2 cycloalkylene group;
about 0.1 to about 5 weight percent of a non-self-polymeπzing, surface-active vinyl monomer; and
about 75 to about 90 weight percent of a non-acid vinyl monomer; and
wherein the poly(alkylenιmme) is poly(ethylenιmme).
4. An ink composition of claim 3, wherein the monomer of Formula (1) is selected from acetoacetoxyethyl methacrylate, acetoacetoxyethyl acrylate, acetoacetoxy(methyl)ethyl acrylate, acetoacetoxypropyl acrylate, and acetoacetoxybutyl acrylate and the non-self-polymerizing, surface-active vinyl monomer is a polyoxyethylene alkyl phenyl ether of formula (3), (4), or (5).




where R is nonyl or octyl, n ranges from 5 to 50, and m ranges from 15 to 40 5 An ink composition comprising a latex of claim 1 , further comprising at least one additive selected from a solvent, a leveling agent, a rheology agent, a coalescing aid, a pigment wetting agent, a dispersing agent, a surfactant, a wax, a defoammg agent, an antifoammg agent, a modifying polymer, and an additive to promote resolubility/rewet

6. An ink composition of claim 5, wherem the ink composition is an adhesive laminating mk, an extrusion laminating ink, or a surface pπnting inks
7. An mk composition of claim 2, further comprising at least one additive selected from a solvent, a leveling agent, a rheology agent, a coalescing aid, a pigment wetting agent, a dispersing agent, a surfactant, a wax, a defoammg agent, an antifoammg agent, a modifying polymer, and an additive to promote lesolubihty/rewct
8 An ink composition of claim 7, wherein the ink composition is an adhesive laminating ink, an extrusion laminating ink, oi a surface printing inks

9. An ink composition of claim 1, further comprising an ammonium buffer and having a pH ranging from 9 to 10.
10. An ink composition of claim 2, further comprising an ammonium buffer and having a pH ranging from 9 to 10.
1 1 An ink composition of claim 1 , wherein the polymer latex is a mixture of a polymeric (polyamino) enamine latex and an acetoacetoxy-functional polymer latex, 12. An mk composition of claim 1 1 , wherein the surfactant-stabilized acetoacetoxy-functional polymer comprises about 1 to about 40 weight percent of a monomer of Formula

(1):
R'-CH=C(R2)C(0)-X'-X2-X%-C(0)-CH2-C(0)-R3 (1 )

where R1 is a hydrogen or halogen; R2 is a hydrogen, halogen, C,-C6 alkylthio group, or C,-C6 alkyl group; R3 is a C,-C6 alkyl group; X1 and X3 are independently O, S, or a group of the formula -N(R')-, in which R' is a C,-C6 alkyl group; X2 is a CrC,2 alkylene group or C3-C12 cycloalkylene group;
about 0.1 to about 5 weight percent of a non-self-polymerizing, surface-active vinyl monomer; and
about 75 to about 90 weight percent of a non-acid vinyl monomer; and
wherein the poly(alkylenimme) is poly(ethylenιmιne).
13. An ink composition of claim 12, wherein the monomer of Formula (1) is selected from acetoacetoxyethyl methacrylate, acetoacetoxyethyl acrylate, acetoacetoxy(methyl)ethyl acrylate, acetoacetoxypropyl acrylate, and acetoacetoxybutyl acrylate and the non-self-polymeπzing, surface-active vinyl monomer is a polyoxyethylene alkyl phenyl ether of formula (3), (4), or (5):


where R is nonyl or octyl, n ranges from 5 to 50, and m ranges from 15 to 40.
14. An ink composition of claim 1 1, further comprising at least one additive selected from a solvent, a leveling agent, a rheology agent, a coalescing aid, a pigment wetting agent, a dispersing agent, a surfactant, a wax, a defoammg agent, an antifoaming agent, a modifying polymer, and an additive to promote resolubility/rewet.
15. An ink composition of claim 1 1, wherein the ink composition is an adhesive laminating mk, an extrusion laminating ink, or a surface printing inks.
16. An mk composition of claim 1 1 , further comprising an ammonium buffer and having a pi I ranging from 9 to 10.
17. Λ method of printing comprising contacting a substrate with an ink composition of claim 1.
18. A method of pπnting of claim 17, wherein the substrate is a film or flexible package material.

19. A method of pπnting comprising contacting a substrate with an mk composition of claim 2.
20. A method of printing of claim 19, wherein the substrate is a film or flexible package material.

21. A method of printing comprising contacting a substrate with an mk composition of claim 1 1
22 A method of printing of claim 21 , wherein the substrate ts a film or flexible package material