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Hyperbranched polyvinyl acetate and its high stability writing ink

A polyvinyl acetate and vinyl acetate technology, which is used in inks, household appliances, applications, etc., can solve the problems of not involving the application of hyperbranched polyvinyl acetate, affecting the quality of emulsified ink, and increasing the viscosity of ink, and achieves excellent water solubility. Properties and emulsifying properties, good writing performance and line appearance, high thixotropic value

Active Publication Date: 2022-06-28
苏州雄鹰笔墨新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aldehyde ketone resin or epoxy resin is generally linear, and it is prone to entanglement and agglomeration during long-term storage, destroying the emulsified state, resulting in an increase in the viscosity of the ink, and problems such as difficulty in ink flow and disconnection during the writing process, which affect the emulsified ink. the quality of
[0003] CN 101891843 A discloses a preparation method of hyperbranched polyvinyl acetate, using ECTVA as RAFT reagent to synthesize hyperbranched polyvinyl acetate, but it does not involve the application of hyperbranched polyvinyl acetate in the field of ink manufacturing

Method used

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  • Hyperbranched polyvinyl acetate and its high stability writing ink
  • Hyperbranched polyvinyl acetate and its high stability writing ink
  • Hyperbranched polyvinyl acetate and its high stability writing ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The synthesis of hyperbranched polyvinyl acetate, step is as follows:

[0044] (1) Synthesis of RAFT reagent PCTVA: Add 300mL of solvent dimethylformamide into the reaction kettle, add 100g of potassium phenoxyxanthate while stirring, fully dissolve and mix well, slowly add 80g of vinyl chloroacetate dropwise, mix The solution was stirred and reacted at room temperature for 3-5 hours. After separation and purification, 110 g of a yellow-green product was obtained, and the calculated yield was 63%. The purity of the obtained product can reach 99% through HPLC detection.

[0045] (2) 500g of monomer vinyl acetate (Vac), 50g of initiator azobisisobutyronitrile (AIBN), 50g of PCTVA and 500mL of solvent (1,4-dioxane) were added successively in the reactor. (40-70° C.) to carry out the reaction for 5-8 hours. After the reaction finishes, separation promptly obtains hyperbranched polyvinyl acetate 540g, and product is carried out GPC measurement, and its molecular weight dis...

Embodiment 2

[0047] Using self-made hyperbranched polyvinyl acetate as polymer resin additive, configure black writing ink.

[0048] (1) Heat 60 grams of ethylene glycol phenyl ether solvent to 80-95 degrees Celsius, gradually add 20 grams of black dye solvent black 209 to it and stir until completely dissolved, add 1 gram of stabilizer Tween after slightly cooling and stir Evenly, make dye compound solution A.

[0049] (2) 45 grams of deionized water and 20 grams of diethylene glycol ether were mixed, heated and stirred evenly to obtain solvent compound solution B.

[0050](3) Slowly add the solvent compound solution B into the dye compound solution A, add while stirring, control the stirring speed at 600-900 rpm, stir for 30 minutes, continue to accelerate the stirring for 60-80 minutes after adding all of it, The rotating speed is 3000 rpm, and the system temperature is maintained at 60 degrees Celsius to prepare emulsified alcohol solution C.

[0051] (4) Take 18 grams of polyvinyl a...

Embodiment 3

[0054] Using self-made hyperbranched polyvinyl acetate as an important polymer resin additive, a blue writing ink is configured.

[0055] (1) Heating 60 grams of phenylethyl alcohol and ethylene glycol phenyl ether solvent (35 grams of phenylethyl alcohol, 25 grams of ethylene glycol phenyl ether) to 80-95 degrees Celsius, gradually adding 18 grams of blue dye solvent Blue No. 38 and Stir evenly until completely dissolved, then add 1 g of stabilizer Tween after slightly cooling down and stir evenly to make dye compound solution A.

[0056] (2) 45 grams of deionized water and 22 grams of diethylene glycol ether were mixed, heated and stirred evenly to obtain solvent compound solution B.

[0057] (3) Slowly add the solvent compound solution B into the dye compound solution A, add while stirring, control the stirring speed at 600-900 rpm, stir for 30 minutes, continue to accelerate the stirring for 60-80 minutes after adding all of it, The rotating speed is 3000 rpm, and the sys...

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Abstract

The invention relates to a hyperbranched polyvinyl acetate and a high-stable writing ink based on it. The invention adopts a simple method to synthesize hyperbranched polyvinyl acetate, which has a symmetrical spherical three-dimensional structure, and molecular chains are not easily entangled, has low viscosity, has good fluidity, and is easy to form a film. Using the polyvinyl acetate as a polymer additive, a writing ink formula was designed and optimized. On the one hand, the components in the emulsified ink formula were simplified, and on the other hand, the stability of the emulsified ink was greatly improved. The prepared The writing ink has the characteristics of low viscosity, high thixotropic value, good writing performance and line appearance.

Description

technical field [0001] The invention relates to the technical field of ink manufacture, in particular to a hyperbranched polyvinyl acetate and a high-stability writing ink based on it. Background technique [0002] Emulsified ink for writing has the advantages of oil-based ink and water-based ink, and is becoming more and more popular among users and markets in today's environment-friendly environment. At present, aldehyde, ketone resin or epoxy resin is generally used as a polymer additive in the production process of emulsified ink, which mainly acts as a binder in the ink, and has a great influence on the viscosity, adhesion, gloss, drying and writing adaptability of the ink. influences. Aldehyde and ketone resins or epoxy resins generally need to be dissolved with a large amount of organic solvents and a certain amount of emulsifiers are added, which reduces the environmental protection of emulsified inks. Aldehyde ketone resin or epoxy resin is generally linear, and i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F118/08C08F2/38C09D11/16
CPCC08F118/08C08F2/38C09D11/16C08F2438/03
Inventor 章建东朱健张胜红
Owner 苏州雄鹰笔墨新材料有限公司
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