Inkjet compositions and processes for stretchable substrates

Patent metadata

Field	Value
Publication number	US-2017145239-A1
Application number	US-201715424943-A
Country	US
Kind code	A1
Filing date	Feb 6, 2017
Priority date	Aug 10, 2009
Publication date	May 25, 2017
Grant date	—

Abstract

Novel inkjet ink compositions for forming an image in a form of an elastic film attached to a surface of a stretchable and/or flexible substrate and processes utilizing same for inkjet printing color images on various substrates such as colored and absorptive or impregnable stretchable materials, which are characterized by heightened efficiency in process time, ink and energy consumption, as well as products having durable, wash-fast and abrasion-fast images printed thereon by the process, are disclosed. The novel ink compositions comprise a first part, which contains a property-adjusting agent and a carrier, and a second part which contains an emulsified property-sensitive proto-elastomeric film-forming agent, a colorant and a carrier, such that the second part congeals upon contact with the property-adjusting agent. The second part is digitally applied to the substrate less than 1 second following the application of the first part to the substrate.

First claim

What is claimed is:

1 . A property-sensitive proto-elastomeric film-forming inkjet composition comprising an emulsified proto-elastomeric film-forming agent characterized by a glass transition temperature (Tg) that ranges from −35° C. to 0° C., a dispersant, a dispersed pigment, a property-sensitive agent and a second carrier, wherein said emulsified proto-elastomeric film-forming agent comprises a polyurethane, said property-sensitive agent is sensitive to a change in a chemical and/or physical property, such that upon effecting said change, the property-sensitive proto-elastomeric film-forming inkjet composition congeals.

2 . The inkjet composition of claim 1 , characterized by forming upon curing an elastic film having a glass transition temperature (Tg) that ranges from −35° C. to 0° C.

3 . The inkjet composition of claim 2 , being for forming an image in a form of said elastic film attached to a surface of a stretchable and/or flexible substrate.

4 . The inkjet composition of claim 1 , wherein said proto-elastomeric film-forming agent further comprises an acrylic polymer selected from the group consisting of an alkyl-acrylic polymer, acrylic-styrene copolymer, an alkyl-acrylic copolymer, and/or any combination, emulsion or salt thereof.

5 . The inkjet composition of claim 1 , wherein said dispersant is a property-sensitive polymerizable dispersant.

6 . The inkjet composition of claim 5 , wherein said dispersant is selected from the group consisting of an acrylate, an acrylic acid salt, an acrylic polymer salt and any combination thereof.

7 . The inkjet composition of claim 1 , wherein said first carrier is an aqueous carrier.

8 . The inkjet composition of claim 1 , wherein said second carrier is an aqueous carrier.

9 . The inkjet composition of claim 1 , further comprising a first metal oxide.

10 . The inkjet composition of claim 9 , wherein said first metal oxide is substantially transparent.

11 . The inkjet composition of claim 1 , further comprising at least one agent selected from the group consisting of a binder, a film-forming binder, a polymerization catalyst, a crosslinking agent, an amine stabilizer, an alcohol stabilizer, a softener/plasticizer, a surface active agent, a surface tension modifying agent, a viscosity modifying agent, a thickener agent, an anticorrosion agent and any combination thereof.

12 . The inkjet composition of claim 11 , wherein said crosslinking agent is a formaldehyde-free crosslinking agent.

13 . The inkjet composition of claim 1 , wherein said immobilization composition further comprises at least one agent selected from the group consisting of a binder, a film-forming binder, a polymerization catalyst, a crosslinking agent, an amine stabilizer, an alcohol stabilizer, a softener/plasticizer, a surface active agent, a surface tension modifying agent, a viscosity modifying agent, a thickener agent, an anticorrosion agent and any combination thereof.

14 . The inkjet composition of claim 1 , being for forming an image in a form of said elastic film attached to a surface of a stretchable and/or flexible substrate when used in combination with said immobilization composition and further in combination with a property-sensitive opaque underbase composition, said property-sensitive opaque underbase composition comprising an emulsified proto-elastomeric film-forming agent, a dispersant, a dispersed second metal oxide and a third carrier.

15 . The inkjet composition of claim 14 , wherein said property-sensitive opaque underbase composition further comprises a crosslinking agent.

16 . The inkjet composition of claim 15 , wherein said crosslinking agent is a formaldehyde-free crosslinking agent.

17 . The inkjet composition of claim 14 , wherein said second metal oxide is substantially opaque white.

18 . The inkjet composition of claim 14 , wherein said third carrier is an aqueous carrier.

19 . The inkjet composition of claim 1 , wherein said property is a chemical and/or physical property selected from the group consisting of acidity (pH), metal atom complexation, ionic strength, solubility, dispersibility, dispensability, hydrophobicity and electric charge.

20 . The inkjet composition of claim 19 , wherein said property-adjusting agent is selected from the group consisting of an acid, a base, a salt, a metal oxide, an organic solvent, a polymerization catalyst, a charged polymer, an oxidizing agent, a reducing agent, a radical-producing agent and a crosslinking agent.

21 . The inkjet composition of claim 20 , wherein said property is acidity (pH).

22 . The inkjet composition of claim 21 , wherein a pH of said immobilization composition ranges from 3.5 to 5.5.

23 . The inkjet composition of claim 20 , wherein said property is metal atom complexation.

24 . The inkjet composition of claim 23 , wherein said property-adjusting agent is a third metal oxide.

25 . The inkjet composition of claim 1 , wherein said immobilization composition comprises a transitory organic acid and/or a first metal oxide and said second carrier is water.

26 . The inkjet composition of claim 25 , wherein said emulsified proto-elastomeric film-forming agent is a pH-sensitive and/or metal oxide-sensitive polyurethane, and wherein the property-sensitive proto-elastomeric film-forming inkjet composition congeals upon contact with said acid and/or said first metal oxide.

27 . The inkjet composition of claim 1 , being for forming an image in a form of said elastic film attached to a surface of a stretchable and/or flexible substrate in combination with a property-sensitive spot color composition, wherein said property-sensitive spot color composition comprises an emulsified proto-elastomeric film-forming agent, a dispersant, a dispersed second metal oxide, a dispersed pigment and a fourth carrier.

28 . The inkjet composition of claim 27 , wherein said property-sensitive spot color composition further comprises a crosslinking agent.

29 . The inkjet composition of claim 27 , wherein said second metal oxide is substantially opaque white.

30 . The inkjet composition of claim 27 , wherein said fourth carrier is an aqueous carrier.

31 . A multi-part inkjet composition, obtainable by contacting the property-sensitive proto-elastomeric film-forming inkjet composition of claim 1 with said immobilization composition.

32 . The multi-part inkjet composition of claim 31 , further obtainable by contacting said property-sensitive proto-elastomeric film-forming inkjet composition with said immobilization composition and with a property-sensitive opaque underbase composition.

33 . The multi-part inkjet composition of claim 32 , further obtainable by contacting said property-sensitive proto-elastomeric film-forming inkjet composition with said immobilization composition, and with said property-sensitive opaque underbase composition and/or with a property-sensitive spot color composition.

34 . The multi-part inkjet composition of claim 31 , further obtainable by contacting said property-sensitive proto-elastomeric film-forming inkjet composition with said immobilization composition, and with a property-sensitive spot color composition.

35 . The multi-part inkjet composition of claim 34 , fu

Assignees

• Kornit Digital Ltd

Inventors

• Mozel Jacob
• Mann Jacob
• Iraqi Muhammad

Classifications

• B41J2202/03

  Specific materials used · CPC title

• D06P5/001

  Special chemical aspects of printing textile materials · CPC title

• B41J3/4078

  Printing on textile · CPC title

• D06P5/2077

  after dyeing · CPC title

• C09D11/30

  Inkjet printing inks · CPC title