Neorez R 960

Neorez R 960. Field of The InventionBackground of The InventionSummary of The InventionDetailed Description of The Preferred EmbodimentsExamplesExample 1Example 2Example 3Example 4Example 5The invention relates to articles comprising a substrate comprising an ink receptive layer and an inkjet printed image as well as methods of ink jet printing The ink receptive layer comprises certain urethanecontaining polymers and blends A variety of print methods have been employed for imaging various sheet materials Commonly employed print methods include gravure offset flexographic lithographic electrographic electrophotographic (including laser printing and xerography) ion deposition (also referred to as electron beam imaging [EBI]) magnetographics ink jet printing screenprinting and thermal mass transfer More detailed information concerning such methods is available in standard printing textbooks One of ordinary skill in the art appreciates the differences in these various print methods and recognizes that a combination of ink and receiving substrate that results in high image quality in one printing method often exhibits an entirely different image quality with another print method For example in contact printing methods such as screenprinting a blade forces the ink to advance and wet the receiving substrate Image defects are typically due to a subsequent recession of the ink contact angle wi The present inventors have found that certain urethanecontaining compositions exhibit a proper balance of ink uptake in combination with good color density (ie dot gain) even though such compositions are substantially free of filler In the present invention the ink receptive layer is derived from and thus comprises certain urethanecontaining polymeric resins As used herein “base polymer” refers to a single urethanecontaining copolymer such as a urethane acrylic copolymer optionally blended with a polyurethane polymer or an acrylic polymer a blend of at least one polyurethane polymer and at least one acrylic polymer a blend of at least two polyurethane polymers and mixtures thereof Further the urethanecontaining base polymer may optionally be crosslinked The blend of polymers may form a homogeneous mixture or may be multiphase exhibiting two or more distinct peaks when analyzed via differential scanning calorimetry (DSC) Further the ink receptive composition may comprise an interpenetrating network of the base polymer in an insoluble matrix or viceversa In order to achieve good image quality during ink jet printing the printed ink drops must spread to within an acceptable range in order to provide Examples 14 and 6 as follows comprise coating compositions and thus ink receptive layers comprising a blend of a polyurethane polymer and an acrylic resin In Examples 13 and 6 the coated polymeric sheet is inkjet printed with a solvent based ink whereas in Example 4 a radiation curable ink is employed Examples 5 and 79 exemplify coating compositions comprising a urethane acrylic copolymer In Examples 5 and 8 the base polymer consists of solely the urethane acrylic copolymer alone in Examples 7 the urethane acrylic copolymer is blended with an acrylic polymer and in Example 9 the urethane acrylic copolymer is blended with a polyurethane polymer Example 10 exemplifies an ink jet receptive coating comprising a blend of polyurethanes A dispersion mixture was made by adding water (54 g) to isopropyl alcohol (30 g) and mixing Then the NEOREZ R960 aqueous polyurethane dispersion (10 g) and the NEOCRYL A612 aqueous acrylic polymer dispersion (5 g) were added to the wateralcohol mixture with stirring to give a dispersion mixture A solution was then made by dissolving in Nmethylpyrrolidone (10 g) TINUVIN 1130 (005 g) TINUVIN 292 (005 g) and the UVITEX OB (0005 g) The solution was then added to the dispersion mixture with stirring to give a coating mixture The final formulation of the coating mixture is shown in Table 2 The coating mixture was coated onto a vinyl film commercially available from 3M under the trade designation “Controltac Plus Graphic Film 18010” using a wire wrapped rod Mayer Rod #12 (available from RD Specialties Inc Webster NY as a size 12 laboratory coating rod) designed to provide a wet coating thickness of 274 microns (one mil) and dried for two minutes at 95° C (203° F) Th Example 1 was repeated except that “NeoRez R966” was substituted for “NeoRez R960” The sample was visually inspected and found to exhibit good image quality no intercolor bleed and no mottle defects Example 1 was repeated except that the ratio of “NeoRez R960” to “NeoCryl A612” was 55/45 rather than 2/1 The sample was visually inspected and found to exhibit good image quality no intercolor bleed and no mottle defects The coating composition of Example 1 was coated onto the vinyl film as described in Example 1 A radiation curable ink was ink jet printed with Ink Composition 2 employing the Xaar Jet XJ128200 printheads with an xY translation stage at room temperature as described in WO02/085638 Offline curing was achieved using either the Fusion Systems UV Processor equipped with the indicated bulb commercially available from Fusion Systems Inc Gaithersburg Md or the RPC UV Processor equipped with two 305 cm medium pressure mercury bulbs commercially available from RPC Industries Plainfield Ill The inline and delayed inline curing was accomplished with an EFOS ULTRACURE 100SS Plus lamp was also used to achieve immediate partial cure of the ink With this method ultraviolet (“UV”) light from the EFOS unit lamp was delivered via a gelfilled flexible connection to a location adjacent the printhead In this configuration the elapsed time between printing and curing was a fraction An aliphatic urethane acrylic copolymer commercially available from Neoresins Inc Wilmington Mass under the trade designation “NeoPac R9000” was coated onto white oriented polypropylene film commercially available from Nan Ya Corporation under the trade designation “XL80B” using a #14 Meyer rod The coated sample was dried in a forced air oven for 10 minutes at 150° F A 12″×12″ sample of the dried coating was laminated to a transfer adhesive and the assembly was laminated to a roll of “18010” film that acts as a carrier film for carrying the sample through the printer The carrier roll containing the 12″×12″ sample was printed with an ink jet printer commercially available from Océ Wide Format Printing Systems Eagan Minn under the trade designation “Océ Arizona 180 Piezo Ink Jet printer” equipped with solventbased ink jet inks commercially available from 3M under the trade designation “3M Piezo Ink Jet Ink Series 6700” using a 200% solid green test pattern (100% cyan and Author Bret W Ludwig Jeffrey O Emslander Caroline M Ylitalo Oh Sang Woo Jennifer L Lee Richard L Cited by Publish Year 2003.

resistance flow and leveling are listed in our NeoRez ® R960 bulletin Drying Characteristics Three mil wet films of NeoRez® R966 were cast on a glass plate Dry times and sward hardness development were obtained at 72°F and 54% relative humidity Set to touch min 30 Dry to touch min 45 Through dry min 50.

Product Data Sheet

NeoRez® R9603 Technical Datasheet | Supplied by DSM Aliphatic urethane polymer Used in coatings Offers very good stain resistance and film clarity Provides very good color retention Read More View less download Product Type.

Product Data Sheet

NeoRez® R9407 by DSM is an APEOfree aromatic urethane Provides ultimate durability & chemical resistance has a fast cure rate exhibits high gloss & clarity It is waterbased and developed for view more.

NeoRez® R9603 DSM datasheet

Recommendations to improve foam resistance flow and leveling are listed in our NeoRez® R960 bulletin Drying Characteristics Three mil wet films of NeoRez® R967 were applied on a glass plate Dry times and sward hardness development were obtained at 72qF and 54% relative humidity Set to touch min 25.