37results about How to "Moderate drying speed" patented technology

The invention relates to a screen printing ink for polypropylene plastic. The screen printing ink consists of a resin basal body dissolved in a solvent, and a proper amount of an additive, a filler and coloring pigment; and based on the total weight of the ink, the resin basal body has 20 to 60 weight portions of cyclorubber with molecular weight of between 1,000 and 2,000,000 and cyclizing rate of between 10 and 90 percent, and 10 to 30 weight portions of chlorinated polypropylene. The resin basal body is added to the solvent, is heated and is stirred in a reactor to dissolve the resin out. A mixture of calcium carbonate, castor oil and ethanol is added to another reactor, is evenly stirred and dispersed, is added with the pigment and is ground. After ball milling, the mixture is added to the prior dissolved resin binder and is stirred and dispersed; and slurry is ground in a grinding machine.

The invention discloses a water-based ink and a special decoloring agent thereof, and the mixing proportion of the water-based ink is as follows: 2-4g of active dye, 1-2g of polymer, 3-5ml of glycerol, 0.01-0.02g of sodium dodecyl sulfate, 1-2ml of ethanol, 2-3g of cinnamic acid and 100ml of water. The decoloring agent consists of a reducing agent, an antioxidant and a dispersant. The ink has theadvantages of bright color, good water solubility and easy degradation, can use the special decoloring agent for carrying out decoloring on written words and is simultaneously conductive to decoloring, recycling and reutilization of waste paper.

The invention discloses environmentally-friendly acrylic ester coating printing adhesive emulsion and a preparation method. An emulsion polymerization process is adopted. The emulsion comprises the following raw materials in part by weight: 50 to 90 parts of soft monomer, 10 to 20 parts of hard monomer, 2 to 10 parts of functional monomer, 2 to 5 parts of emulsifying agent, 0.2 to 0.5 part of initiator, 0.2 to 0.5 part of pH buffer, 80 to 120 parts of deionized water and a proper amount of pH adjustor, wherein the total amount of the soft monomer, the hard monomer and the functional monomer is 100 parts by weight. The three monomers are cooperatively used as functional monomers for generating carboxyl crosslinking, hydroxy crosslinking, epoxy crosslinking and the like so that the obtainedprinting adhesive emulsion has excellent water tolerance and mechanical property. The crosslinking monomers and the emulsifying agent do not contain the components such as N-methylol acrylamide, APEOand the like, so the emulsion does not release formaldehyde during baking and using and is suitable for high-grade environmentally-friendly printing adhesive.