A kind of uv-led offset printing ink and preparation method thereof
A UV-LED and offset printing ink technology, applied in the field of ink, can solve the problems of not taking into account the wettability of adhesion pigments, not suitable for paper materials, poor flexibility, etc., and achieve bright colors, excellent adhesion, and fast curing speed Effect
Active Publication Date: 2021-04-16
BAUHINIA VARIEGATA INK & CHEM (ZHONGSHAN) LTD +1
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Problems solved by technology
[0004] As the printing industry has higher and higher requirements for ink printing speed, ordinary UV offset printing inks mostly use multifunctional polyester acrylate, epoxy acrylate or polyurethane acrylate as the main resin, but this type of resin has poor flexibility and cannot Considering both adhesion and pigment wettability, it is not suitable for printing on paper materials
Method used
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preparation example Construction
[0038] Preparation of Modified Epoxy Acrylate A
[0039] Mix epoxy resin with hydroxyl-terminated polybutadiene liquid rubber (equivalent ratio of epoxy group to hydroxyl group is 1:0.2), add 1% catalyst triethylamine and 0.1% polymerization inhibitor p-methoxyphenol, at 90 React at ~100°C for at least 3 hours, then add acrylic acid (equivalent ratio of epoxy group to carboxyl group is 1:0.8) dropwise into the reaction system, react at 100~110°C until the acid value reaches below 2mgKOH / g, and obtain terminal Hydroxypolybutadiene modified epoxy acrylate.
[0040] Preparation of modified epoxy acrylate B
[0041] Mix epoxy resin with hydroxyl-terminated nitrile rubber liquid rubber (equivalent ratio of epoxy group to hydroxyl group is 1:0.2), add 1% catalyst triethylamine and 0.1% polymerization inhibitor p-methoxyphenol, at 90~ React at 100°C for at least 3 hours, then add acrylic acid (the equivalent ratio of epoxy group to carboxyl group is 1:0.8) into the reaction system ...
Embodiment 1～5 and comparative example 1～4
[0045] Preparation Examples 1-5 and Comparative Examples 1-4 according to the formula in Table 1;
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The invention discloses a UV-LED offset printing ink and a preparation method thereof. The ink is composed of the following components calculated in parts by weight: 20-35 parts of modified epoxy acrylate, 10-20 parts of rosin-modified polyester Acrylic ester, 5-15 parts of acrylic modified alkyd resin, 5-10 parts of vinyl-terminated rosin derivatives, 1-10 parts of multifunctional crosslinking monomer, 1-10 parts of monofunctional diluting monomer, 5-10 parts 1 part of photoinitiator, 15-40 parts of pigment, 3-10 parts of filler, 1-3 parts of wax powder, 0.1-5 parts of additive. The ink uses UV-LED as the curing method, no solvent volatilization, meets the national VOC emission standard, and is environmentally friendly and energy-saving. Moreover, the ink has fast curing speed, high production efficiency, and is suitable for high-speed operations. At the same time, it has excellent flexibility and adhesion, and has good wear resistance, heat resistance, and chemical resistance. It is very suitable for composite gold and silver cardboard and white cardboard , coated paper, metal foil paper, synthetic paper, composite laser paper, transfer paper and other paper and packaging products printing.
Description
technical field [0001] The invention relates to the technical field of inks, more specifically, to a UV-LED offset printing ink and a preparation method thereof. Background technique [0002] UV-LED offset printing inks are generally composed of acrylic prepolymers, acrylate monomers, photoinitiators, pigments and fillers, and additives. The basic principle of its curing is to absorb 200-450nm UV-LED ultraviolet light, activate the photoinitiator to generate free radicals or cations, trigger the double bonds in the resin or monomer to cause polymerization and crosslinking, and complete the curing process, which belongs to the radiation curing method kind of. [0003] Compared with traditional offset printing inks, UV-LED offset printing inks have the following advantages: 1. More environmentally friendly, UV-LED offset printing inks generally have a solid content close to 100%, no solvent volatilization, and meet the national VOC emission standards, which are harmful to the...
Claims
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IPC IPC(8): C09D11/101C09D11/102C09D11/104C09D11/105C09D11/08C09D11/107C09D11/03C09D11/037
CPCC09D11/03C09D11/037C09D11/08C09D11/101C09D11/102C09D11/104C09D11/105C09D11/107
Inventor 封亮廷郑嘉颖伍雪芬沙济洪王小妹陈海星周洪波
Owner BAUHINIA VARIEGATA INK & CHEM (ZHONGSHAN) LTD