Preparation method of water-based UV ink (ultraviolet) of unsaturated polyester polyurethane segmented copolymer

A polyester polyurethane and block copolymer technology, applied in inks, household appliances, applications, etc., can solve the problems of reducing mechanical properties, reducing curing shrinkage, etc., achieving small curing shrinkage, good printability, and low VOC emissions Effect

Inactive Publication Date: 2011-08-17
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For a long time, people have focused on the modification of UPR by adding polyurethane elastomer and UPR physical blending to achieve the purpose of modification, but it often improves its impact toughness and reduces curing shrinkage while reducing other mechanical properties.

Method used

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  • Preparation method of water-based UV ink (ultraviolet) of unsaturated polyester polyurethane segmented copolymer
  • Preparation method of water-based UV ink (ultraviolet) of unsaturated polyester polyurethane segmented copolymer
  • Preparation method of water-based UV ink (ultraviolet) of unsaturated polyester polyurethane segmented copolymer

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preparation example Construction

[0017] The present invention is the preparation method of unsaturated polyester polyurethane block copolymer aqueous UV printing ink, and its steps are:

[0018] (1) Add the measured maleic anhydride, phthalic anhydride, ethylene glycol, xylene, and catalysts into the reaction vessel equipped with electric stirring, water separator, thermometer, and electric heating mantle in turn. The dibasic anhydride is phthalic anhydride. Saturated acid anhydride, maleic anhydride is an unsaturated acid anhydride, the molar ratio of phthalic anhydride to maleic anhydride is 2:1 to 3:1, the excess molar percentage of hydroxyl is 50% to 100%, and the number average molecular weight of the oligomer is 500 to 1000 ;Heat until the solid dissolves, start stirring, and raise the temperature to 150°C, react for 2 hours, raise the temperature to 190±2°C and react for 1 hour, cool down to 150°C and add the measured diol, vacuumize until the hydroxyl value meets the requirements, Evaporate the solven...

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Abstract

The invention relates to a preparation method of water-based UV ink (ultraviolet) of unsaturated polyester polyurethane segmented copolymer. The preparation method includes the steps as follows; dihydric alcohol, maleic anhydride and phthalic anhydride are adopted to generate unsaturated polyester oligomer of hydroxyl end group by progressive polycondensation; after progressive addition polymerization with reactive diluent as the solvent, the unsaturated oligomer, polyethylene glycol ether and diisocyanate are subjected to chain extension with water functional monomer to generate unsaturatedpolyester polyurethane segmented prepolymer solution of isocyanate end group and with hydrophilic function; and after the prepolymer is end-sealed with methacrylic acid-beta hydroxyethyl, monoethanolamine is taken as neutralizer that is dispersed in water while stirred to obtain water-based joining material of unsaturated polyester polyurethane segmented prepolymer. The water-based joining material and the pigment filler, the photosensitizer and the assistant are formulated to prepare water-based UV ink of unsaturated polyester polyurethane segmented prepolymer.

Description

technical field [0001] The invention relates to a method for preparing ink. Background technique [0002] At present, the research focus of water-based UV inks is on the water-based and photoactive ink binder resins. The water-based methods of resin mainly include physical dispersion method, chemical dissolution method and physical and chemical compound method. The physical method is to disperse the resin in the water medium with the help of strong stirring in the presence of a dispersant to form a water-dispersed resin emulsion; chemical dissolution The method is to introduce polymerizable water-based functional monomers into the resin synthesis design, and after polymerization, the resin has hydrophilic solubility through salt formation to form an aqueous solution of resin salts; the physical-chemical composite method takes into account both physical and chemical methods to make the resin water-based. Considering the comprehensive performance of water-based resin ink, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/68C09D11/10C09D11/101C09D11/102
Inventor 崔锦峰杨保平周应萍郭军红杨宏斌马永强李延华刘永亮
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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