Patent ID: 8410212
Filing Date: 2013-04-02
Classification: A61K,A61Q,C08F,C09D,C09J

Abstract:
1. An ink comprising: a pigment; a solvent; and an alcohol-soluble resin including the following raw materials: with an initiator of 0.1% to 1.1% by weight, wherein each of the weight percentages of the raw materials is based on the total weight of the raw materials, and polymerized in at least one of ester and alcohol solvent(s); said reactive functional group-containing compound selected from the group consisting of acrylic acid, methacrylic acid, butane dioic acid, hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, glycidyl acrylate, glycidyl methacrylate, reaction product of unsaturated acid and diepoxide, acrylamide, methacrylamide, and hydroxymethyl acrylamide; said intiator is at least one of azodiisobutyronitrile and benzoyl peroxide, wherein the alcohol-soluble resin is prepared by the following steps: 1) adding into a reactor tank constituent A comprising 40 kg of vinyl acetate, 2 kg of ethyl acrylate, 1 kg of methyl acrylate and 3 kg of methyl methacrylate, along with solvents comprising 10 kg of isopropyl alcohol and 5 kg of ethyl acetate for dilution, and heating while stirring the ingredients added into the reactor tank; 2) preparing in a dropper constituent B comprising 40 kg of vinyl acetate, 3 kg of ethyl acrylate, 1 kg of methyl acrylate, 3 kg of methyl methacrylate, 4 kg of acrylic acid, 3 kg of hydroxypropyl acrylate and 0.5 kg of azodiisobutyronitrile, after the ingredients provided in step 1) being heated up to the reflux temperature, adding the constituent B drop wise into the reactor tank over a period of 2 hours, and then allowing the reaction to proceed for 1 hour; 3) dissolving 0.2 kg of azodiisobutyronitrile in 2.5 kg of isopropyl alcohol and 2.5 kg of ethyl acetate, and adding the resulting solution drop wise into the reactor tank over a period of 0.5 hour, and then allowing the reaction to proceed for 2 hours under a constant temperature; and 4) adding 20 kg of ethyl acetate and 60 kg of industrial alcohol into the reactor tank, and then cooling down and discharging the resulting mixture in the reactor tank to obtain 200.7 kg of resin with 50% of solid content.