Hyperbranched polymers – their application in printing inks

Żołek‐Tryznowska, Zuzanna; Izdebska, Joanna

doi:10.1080/15685543.2012.759817

Cited by 8 publications

(12 citation statements)

References 12 publications

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“…It can be concluded that a small addition of hyperbranched oligoether changes the color properties of the overprinted ink film, which was also observed in previous studies. 17,18 Gloss is one of the most important parameters in printing and packaging technology, because gloss affects the print quality by providing a better overall look and greater depth to colors. 35,36 Gloss is a property of a material that is responsible for light reflection from a surface.…”

Section: Print Qualitymentioning

confidence: 99%

“…1 The flow time of the original Process ink was 17.0 s, and the printing ink modified with BPG was 17.1 s; therefore, the addition of the oligomer had no impact on the flow time of the ink, which has also been observed by us previously. 17,18 The adhesion of the ink film to the base (oPP or PET plastic films) should be examined before the optical density, color values (L*, a*, b*) and mechanical properties of the print are measured. It is necessary to assess the adhesion of the ink film to the base, because this parameter determines the print quality as well as the interactions between the overprinted ink film and the base.…”

Section: Print Qualitymentioning

confidence: 99%

“…The mass fraction of BPG was 0.01, because the best print quality was obtained after the addition of 0.01 of the hyperbranched polyester. 17,18 Then, the ink was stirred for 30 min using a mechanical stirrer (Silverson, UK). The rheological characteristics of the printing inks (the original Process printing ink and the ink with added BPG) were specified by the flow time in a flow cup (volume 100 mL, outlet diameter 4 mm), according to an ISO standard.…”

Section: Ink Preparation and Printingmentioning

confidence: 99%

“…16 In previous work, it has been shown that commercially available hyperbranched polyesters, such as polymers from the Boltorn TM family, can improve colorfastness to rubbing of solvent-based printing inks. 17,18 Polyglycerols, unlike polyesters, are much more stable against acidic or basic hydrolysis 19 ; thus, they can be used as performance additives in waterbased printing inks. The advantage of polyglycerols compared to polyesters is the remarkable solubility in water, owing to the functional hydroxyl groups.…”

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Hyperbranched polyglycerol as an additive for water-based printing ink

2015

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In this work, the application of hyperbranched polyglycerol as a performance additive for water-based printing inks is demonstrated. The hyperbranched polyglycerol, (BPG), was synthesized through anionic ring-opening polymerization from glycidol using 1-butanol as the starting material. The branched structure of BPG is presented and described. The presence of linear, dendritic and terminal units was confirmed by Moore et al. (Prog Surf Sci 88(3):213-236, 2013) 13 C NMR spectroscopy. BPG was then used as a performance additive in a water-based flexographic printing ink. The impact of a small amount of hyperbranched BPG on the printing ink color was examined by studying the optical density of a full-tone area, the total color difference, DE ab *, and the gloss of the dried ink film. The colorfastness to dry and wet rubbing of overprinted samples was studied. The investigated BPG is shown to be able to improve colorfastness to dry and wet rubbing of prints.

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Section: Print Qualitymentioning

confidence: 99%

Section: Print Qualitymentioning

confidence: 99%

Section: Ink Preparation and Printingmentioning

confidence: 99%

mentioning

confidence: 99%

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Hyperbranched polyglycerol as an additive for water-based printing ink

2015

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“…Then, the ink was stirred for 30 min with a mechanical stirrer (Silverson, UK) as a disperser at 1800 rpm. The mass fractions of ILs in the printing ink were 0.01, as optimised for the best print quality from a previous investigation . The rheological characteristics of the flexographic printing inks were specified by the flow time in a flow cup (volume 100 ml, outlet diameter 4 mm).…”

Section: Methodsmentioning

confidence: 99%

Ionic liquids as performance additives for water‐based printing inks

Żołek‐Tryznowska

Izdebska

Gołąbek

2014

Coloration Technology

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For the first time, the use of ionic liquids as additives for printing inks in order to improve the wettability of the printing base by the ink is presented. The aim of this work was to study the influence of ionic liquids on the selected properties of water‐based printing ink and the prints. The contact angles of the printing inks on the printing base were measured. Modified flexographic inks were laboratory printed on polypropylene plastic film. The impact of small amounts of various ionic liquids on printing ink colour was examined in terms of the optical density of the full‐tone area, the colour parameters (L*, a*, b*, CIE), the total colour difference, and the gloss of the dried ink film. The influence of ionic liquids on the ink contact angle, the optical density, and the L*a*b* coordinates is discussed. In general, the investigated ionic liquids improve the wettability of water‐based flexographic printing ink, with an acceptable total colour difference. The optical density is increased for printing inks containing ionic liquids in comparison with the original flexographic printing ink, Process.

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The wettability effect of branched polyglycerols used as performance additives for water-based printing inks

2018

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The aim of this work was to study the influence of primary and secondary hydroxyl groups in the branched polyglycerol on the selected properties of water-based printing ink and copies printed with waterbased flexographic printing inks. The branched polyglycerols were synthesized through anionic ring-opening polymerization using trimethylolpropane as a starting material. Obtained polyglycerol exhibited an irregular structure containing primary and secondary or predominantly primary hydroxyl groups in the macromolecule. The analysis (FTIR, 1 H NMR, 13 C NMR) confirmed the structure of polyglycerols. Obtained polyglycerols were then used as a performance additive in a water-based flexographic printing ink. The contact angles of the printing inks on the printing base were measured. The impact of a small amount of branched polyglycerol on the printing ink color was examined by studying the optical density of a full-tone area, the color values (CIELAB), the total color difference DE Ã ab , and gloss of the dried ink film. In general, the addition of branched polyglycerol containing only primary hydroxyl groups improved the wettability of the plastic film and gloss of printing ink with an acceptable total color difference DE Ã ab in contrast to branched polyglycerol with primary and secondary hydroxyl groups.

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Hyperbranched polymers – their application in printing inks

Cited by 8 publications

References 12 publications

Hyperbranched polyglycerol as an additive for water-based printing ink

Hyperbranched polyglycerol as an additive for water-based printing ink

Ionic liquids as performance additives for water‐based printing inks

The wettability effect of branched polyglycerols used as performance additives for water-based printing inks

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