Radiation Curable Coatings and Pigment Binders for Textile Substrates

Luiken, A.; Marsman, Marielle; Holweg, R B M

doi:10.1177/152808379202100405

Cited by 13 publications

(6 citation statements)

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“…Thus UV curing produces a completely polymerized network in seconds and is faster than thermal curing [20]. UV curing for pigment printing has been studied [21][22][23]. Problems associated with the process include low crock fastness, stiff fabric hand and low curing efficiency of the resin when pigments are involved.…”

Section: Resultsmentioning

confidence: 99%

Use of the Newly Synthesized Aqueous Polyurethane Acrylate Binders for Printing Cotton and Polyester Fabrics

El‐Molla¹,

El‐Sayad²,

El‐Kashouti³

et al. 2012

ACES

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The use of the four new synthesized polyurethane acrylate binders in the pigment print paste for screen printing cotton and polyester fabrics and pigment fixation through the polymerization process of the binder by using the thermofixation technique as well as the UV curing technique was studied. The effect of changing time and temperature of thermofixation, and the time of UV curing on the color strength, and prints fastness properties were also studied. The results showed that, the newly synthesized polyurethane acrylate binders could be successfully used for pigment fixation on cotton and polyester using the two fixation techniques and in general their prints possessed better color strength values as compared to those obtained upon using the selected commercial binders.

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Section: Resultsmentioning

confidence: 99%

Use of the Newly Synthesized Aqueous Polyurethane Acrylate Binders for Printing Cotton and Polyester Fabrics

El‐Molla¹,

El‐Sayad²,

El‐Kashouti³

et al. 2012

ACES

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“…UV curable coatings save energy and reduce or eliminate solvent emission, compared to solvent based systems, since most of the formulations are composed of 100 per cent oligomers and reactive diluents. This technique has been applied commercially in printing thin film coatings, adhesives (Koshiba et al , 1982) and in textiles (Krijinen et al , 1994; Luiken et al , 1992). Recently, UV curing has also been used in photolithography, for polymer‐dispersed liquid crystal (Ono and Kawatsuki, 1994) as an electrolyte for lithium batteries (Santosh et al , 2006) and several waterborne formulations have also been developed (Wang and Wang, 2005).…”

Section: Introductionmentioning

confidence: 99%

UV curable polyurethane acrylate coatings for metal surfaces

Srivastava

Agarwal

Mistry

et al. 2008

Pigment & Resin Technology

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PurposeThe purpose of this paper is to synthesise environment friendly UV curable polyurethane acrylate resins for various industrial applications and study the performance properties of the cured coating films applied over metal surfaces.Design/methodology/approachThe polyurethane acrylate resin was synthesised using polyester polyol (synthesised using ethylene glycol, adipic acid and 1,6 hexane diol), isophorone diisocynate (IPDI) and 2‐hydroxy ethyl methacrylate (HEMA). The different formulations were developed using various reactive diluents viz. monofunctional, difunctional, trifunctional and tetrafunctional (ethoxylated phenol monoacrylate, 1, 6 hexane diol di acrylate, dipropylene glycol di acrylate, trimethylol propane triacrylate, propoxylated trimethylol propane triacrylate, pentaerythrol triacrylate – PETA). These samples were cured under UV radiation. For effective curing, various compositions of oligomers, photoinitiator and reactive diluents were used. The mechanical, optical, rheological, chemical and stain resistance properties were evaluated.FindingsThe designed polyurethane acrylate gave good performance properties when used with reactive diluents having different functionality in different ratios for application over metal surfaces as protective coatings for various industrial applications. While using reactive diluents, the coating compositions showed significant enhancement of mechanical, physical and chemical resistance properties. Owing to different functionality of reactive diluents used, highly cross‐linked structures are formed, which lead to excellent mechanical and chemical properties. The optimum results were obtained with PETA as reactive diluent.Research limitations/implicationsThe polyurethane resin has been synthesised from polyester polyol (made up of ethylene glycol, adipic acid and 1, 6 hexane diol), IPDI, 2‐HEMA. Besides, this, it can be synthesised from some other polyester polyol or polyether polyol. In addition to this, some other isocyanates such as TDI, MDI, HDI, HMDI, etc. may be used.Practical implicationsThe study has provided a better solution for developing low volatile organic compound (VOC) products by using UV radiations, which can be cured within a minimum period of time and can save significant application curing time for the end‐users. The developed product is also an environmentally friendly product.Originality/valueMetallic surfaces are widely used in packaging industry in rigid and semi‐rigid forms. One of the prime requirements of the surface is an attractive printing on it. Conventionally used coating system on metallic surfaces are not holding or retaining their decorative effect/gloss level to a large extent. For this purpose, an overprint varnish is normally used which is mostly solvent based. This paper has been able to suggest very good formulations for printing of metallic surfaces for packaging and for overprinting in particular, which is radiation curable and environment friendly.

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“…UV curing technology is used in many industrial applications for coating of paper, plastic, metals, wood and glass surfaces because of low energy consumption, short start‐up period, fast and reliable curing, low environmental pollution, curing at room temperature, and space saving 27. In the field of textile finishing processes the radiation curing was proposed for pigment printing,28, 29 to realize coatings for shrink‐resist wool,30, 31 and various functional finishes as flame retardant,32 durable press33 and water‐repellency 34. Only one limitation could arise from the fact that UV curing should be applied to fabrics while thermal grafting of silk can be applied also to yarns in common dyeing equipment.…”

Section: Introductionmentioning

confidence: 99%

Silk grafting with methacrylic and epoxy monomers: Thermal process in comparison with ultraviolet curing

Ferrero

Periolatto

Songia

2008

J of Applied Polymer Sci

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Silk grafting with methacrylic and epoxy monomers was studied with the aim to obtain high graft yields. With both monomer types optimum operating conditions of thermal grafting in water bath were established. In particular, three epoxy monomers were tested at various concentrations, at different temperatures and reaction times, with sodium chloride or sodium thiosulphate as catalysts. Optimum yields (76-82%) were found with Araldite DY-T for 2 h at 708C with 3M sodium chloride. The results were compared with those obtained with the same monomers by UV curing, radical with methacrylates and cationic with the epoxy resin. The UV curing efficiency was tested by gel content determinations. Thermal and UV cured fibers were then subjected to measurements of fibroin solubility in ethanolcalcium chloride-water mixture to evaluate the crosslinking degree. Except in the case of methacrylamide, radical UV curing yielded fibers more crosslinked than thermal treatment, or crosslinked to the same extent, whereas cationic UV curing showed lower crosslinking effects. The grafted fibers were characterized through DSC measurements and FTIR-ATR spectrometry. Finally, surface morphology of UV-cured samples was investigated through SEM analyses which showed that the better products could be obtained with UV curing at low add-on, mainly with dimethacrylates and Araldite DY-T, whereas the thermal grafting seems to be preferable for high add-on.

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Radiation Curable Coatings and Pigment Binders for Textile Substrates

Cited by 13 publications

References 1 publication

Use of the Newly Synthesized Aqueous Polyurethane Acrylate Binders for Printing Cotton and Polyester Fabrics

Use of the Newly Synthesized Aqueous Polyurethane Acrylate Binders for Printing Cotton and Polyester Fabrics

UV curable polyurethane acrylate coatings for metal surfaces

Silk grafting with methacrylic and epoxy monomers: Thermal process in comparison with ultraviolet curing

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