Radiation Curable Ink

A radiation curable ink can be cured by irradiation with UV light or by electron beams (8). When a radiation curable ink is used for printing on ink-iepeUent media, which absorb no or little ink, such as plastics, glass, and coated paper, the ink can be quickly dried. Basically, a radiation curable ink contains a polymerizable monomer, a pol5mierization initiator, a pigment and other additives. 

For curing, high-energy light has been commonly used, such as metal halide lamps. These devices may have problems with their short shelf life and large size. 

Light sources that are incorporated in an inkjet recording apparatus should be small in size because of the constitution of the apparatus. Recently, as a result, light-emitting diodes (LEDs), have attracted attention despite their lower energy compared to that of metal halide lamps. 

A radiation curable ink that can be cured to a sufficient extent even when a low-energy light source, such as an LED, is used has been developed. Special t q)es of curable polymers are required. A 

Still another composition is listed in Table 5.7. The functions of the compounds are explained below. 

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Solution polymers are the second most important use for acryflc monomers, accounting for about 12% of the monomer consumption. The major end use for these polymers is in coatings, primarily industrial finishes. Other uses of acryflc monomers include graft copolymers, suspension polymers, and radiation curable inks and coatings. 

Radiation curable inks have been making inroads into markets where solvent inks reigned in the past, particularly wide format printing. UV and EB curable inks have the advantage of low emissions. In addition, these inks have an advantage over solvent inks in that they can be cross linked on the substrate, leading to durable prints, while the inks in the printer can be kept stable. 

In the final analysis, the separation between the different types of inkjet solvent, UV, is somewhat arbitrary and indeed there are advantages to mixing solvent into radiation curable inks. ... 

CAS 42978-66-5 EINECS/ELINCS 256-032-2 Uses Diluent for radiation-curable inks and varnishes for many types of substrates... 

Chem. Descrip. Glyceryl propoxylate triacrylate Uses Used in radiation-curable ink and varnish formulations incl. wood varnishes and sealers, vinyl, metal deco Features Exhibits fast cure and good water balance props, in wet offset litho inks produces films of relatively high crosslink dens. 

Synonyms EOEOEA Ethoxyethoxyethyl acrylate Uses Monomer, reactive diluent for radiation-curable ink and coating formulations... 

Uses Monomer improving adhesion in thermoset acrylic and urethane coatings, fibers, syn. resins, radiation-curable inks ManufJDistrib. Monomer-Polymer Dajac Labs Rhodia... 

PEG-10 bisphenol A dimethacrylate monomer, adhesion improving fibers Propylene glycol methacrylate monomer, adhesion improving radiation-curable inks... 

C. Sato, T. Miyabayashi, S. Miura, T. Saito, H. Nakane,J. Ito, T. Kagose, H. Kida, and H. Kajimoto, Radiation-curable ink composition, inkjet recording method, and recorded matter, US Patent 8 470 904, assigned to Seiko Epson Corporation (JP), June 25, 2013. 

J. Ito and H. Nakane, Radiation curable ink jet ink composition and ink jet recording method, US Patent 8 564142, assigned to Seiko Epson Corporation (Tokyo, JP), October 22,2013. 

Tsuchimura, T. Kunita, K. Radiation curable ink-jet inks containing polymerization initiation sensitizing dyes. Eur. Pat. Appl. EP 1657286, 2006 Chem. Abstr. 2006,144,490394. 

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