FABRIC PRETREATMENT FOR DIGITAL PRINTING

• US 20160312404A1
• Filed: 11/20/2014
• Published: 10/27/2016
• Est. Priority Date: 12/18/2013
• Status: Active Grant

• Current Assignee: Lubrizol Advanced Materials Incorporated (Berkshire Hathaway Incorporated)
• Original Assignee: Lubrizol Advanced Materials Incorporated (Berkshire Hathaway Incorporated)
• Inventors: Rohde, Stacy L., Pan, Yun-Long, Anderle, Gary A.
• Granted Patent: US 10,640,917 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B41M 5/0011 Pre-treatment or treatment during printing of the recording material, e.g. heating, irradiating after-treatment of prints B41M7/00; printers for treating or overcoating copy materials before, during or after printing B41J11/0015
• CPC Class Codes: D06P 1/5242 Polymers of unsaturated N-containing compounds
• CPC Class Codes: D06P 1/5264 Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
• CPC Class Codes: D06P 1/5278 Polyamides; Polyimides; Polylactames; Polyalkyleneimines
• CPC Class Codes: D06P 1/5285 Polyurethanes; Polyurea; Polyguanides
• CPC Class Codes: D06P 5/22 Effecting variation of dye affinity on textile material by chemical means that react with the fibre documents concerning material modified in the mass by compounding with modifying agents affecting the dye affinity after spinning, are not classified here: see the relevant groups C08, D01F, D06P3/00; grafting of monomers on textile materials C08F, D06M11/00
• CPC Class Codes: D06P 5/30 Ink jet printing

Abstract

An aqueous blend of an azetidinium functionalized polymer and a polymer having quaternary amine groups is disclosed for use as aqueous pretreatment for substrates such as textiles and garments that are going to be digitally printed. The pretreatment may further comprise wetting agents, surfactants, and preservatives. The pretreatment may be dry or wet immediately prior to digital printing and may be heat treated to bond the pretreatment to the substrate and/or the subsequent print ink.

Claims

1. A substrate pretreatment material comprising;

a) from 0.1 to 50 weight percent of an azetidinium functionalized polymer,

b) from about 0.1 to 50 weight percent of an at least partially quaternized copolymer of sulfur dioxide and allylamine and/or diallylamine of weight average molecular weight from about 3,000 to 200,000 g/mole, wherein allylamine includes mono, di, and trialkyl (C₁-C₆) substituted allylamine and diallylamine includes mono and dialkyl (C₁-C₆) substituted diallylamine,

c) optionally a surface tension modifier selected from the group of mono or polyhydroxy C₁-C₁₀ alcohol, an alkylene oxide oligomer of less than 500 g/mole molecular weight, or a surfactant, wherein said weight percent are based on 100 parts by weight of substrate pretreatment.

2. The substrate pretreatment material of claim 1, wherein said azetidinium functionalized polymer has on average at least five azetidinium groups per polymer and of number average molecular weight from about 5,000 to 500,000 g/mole and wherein said copolymer has at least 5 quaternized amine groups per polymer.

3. The substrate pretreatment material of any of claim 1, further comprising a 0.2 to 15 weight percent of an organic acid.

4. The substrate pretreatment material of claim 1, wherein said surface tension modifier is present and comprises both a C₁-C₁₀ alcohol and an alkylene oxide oligomer of less than 500 g/mole molecular weight.

5. The substrate pretreatment material of claim 1, further comprising a surface active agent.

6. The substrate pretreatment material of claim 1, wherein the polymer with pendant azetidinium groups is present from about 0.2 to about 10% by weight based upon the weight of said substrate pretreatment as applied.

7. The substrate pretreatment material of claim 1, wherein said copolymer of sulfur dioxide and allylamine and/or diallylamine is present from about 0.2 to about 10% by weight based upon the weight of said substrate pretreatment as applied.

8. The substrate pretreatment material of claim 1, wherein the polymer with pendant azetidinium groups is present from about 1 to about 5% by weight based upon the weight of said substrate pretreatment as applied.

9. The substrate pretreatment material of claim 1, wherein said copolymer of sulfur dioxide and allylamine and/or diallylamine is present from about 1 to about 5% by weight based upon the weight of said substrate pretreatment as applied.

10. A substrate pretreatment material, according to claim 1, as a dried film, surface treatment, or coating on a substrate, said substrate comprising a polymer film or a woven or non-woven substrate.

11. The substrate pretreatment material, as a dried film, surface treatment, or coating, on a substrate according to claim 10 in the form of a textile cloth or garment.

12. The substrate pretreatment on a substrate according to claim 10, wherein said woven or non-woven substrate is at least 25 wt. % cotton, more desirably at least 50 wt. % cotton, and preferably at least 80 wt. % cotton.

13. The substrate pretreatment on a substrate according to claim 10, wherein said woven or non-woven substrate is at least 25 wt. % polyester, more desirable at least 50 wt. % polyester and in one embodiment preferably at least 80 wt. % polyester.

14. The substrate pretreatment coating on a substrate according to claim 10, further comprising a printed image on the pretreatment coating (more desirably wherein the printed image includes at least one pigment).

15. The substrate pretreatment on a substrate according to claim 10, optionally including a polymeric binder, wherein the substrate is a polymeric film.

16. A process for pretreating a textile substrate and printing thereon with a pigment containing digitally applied ink comprising,

a) providing a textile substrate,

b) applying a substrate pretreatment according to claim 1,

c) digitally printing with a pigment containing ink on the substrate pretreatment.

17. The process for pretreating a textile substrate and printing thereon with a pigment containing digitally applied ink according to claim 16, further comprising a drying step between applying the pretreatment and digitally printing with a pigment containing ink on the substrate pretreatment.

18. The process for pretreating a textile substrate and printing thereon with a pigment containing digitally applied ink according to claim 16, further comprising a step of heating the substrate, pretreatment and optionally one or more pigment containing inks to effect bonding to the substrate at a temperature from about 100°

C. to about 160°

C. for at least one minute.

19. The process according to claim 16, any of claim 16, wherein said textile substrate comprises at least 25 wt. % polyester fibers based on the weight of said textile.

20. The process according to claim 16, wherein said textile substrate comprises at least 25 wt. % cotton fibers based on the weight of said textile.