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Method for preparing polyurethane linking agent used for environment-friendly ink

An environment-friendly, polyurethane technology, applied in ink, applications, household appliances, etc., can solve the problem of low adhesion between ink and printing substrate, and achieve the effect of reducing and eliminating harmful substances

Inactive Publication Date: 2008-04-30
江阴市诺科生物新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Before the present invention was made, the linking agent for ink in the past was phenolic resin and rosin modified phenolic resin, which only had the function of oxidation and film formation, but the adhesion fastness between ink and printing substrate was not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 80 grams of PBA2000 and 36 grams of MDI to the flask, react at 85 ° C for 1.5 hours, cool down to 70 ° C, add 6 grams of DMPA, 8.6 grams of 1, 4 butanediol, keep stirring for 30 minutes, drop 5 drops of dibutyl Tin dilaurate, add 40 grams of acetone to reduce the viscosity of the system, keep the temperature for 4.5 hours, then drop to room temperature, add 4 grams of triethylamine to neutralize, add 310 grams of ethanol, stir, and remove the acetone to obtain a polyurethane linking agent for ink.

Embodiment 2

[0016] Add 117 grams of polybutylene adipate and 40 grams of MDI to the flask, react at 85 ° C for 1.5 hours, cool down to 70 ° C, add 6 grams of DMPA, 7.5 grams of 1, 4 butanediol, keep stirring for 30 minutes, Add 5 drops of dibutyltin dilaurate dropwise, add 50 grams of acetone to reduce the viscosity of the system, keep the temperature for 4.5 hours, and then drop to room temperature, add 4 grams of triethylamine to neutralize, add 350 grams of ethanol, stir, and remove the acetone to obtain Polyurethane linker for inks.

[0017] The number-average molecular weight of the prepared linking agent prepared by the present invention is 10000-30000 (detected by a gel chromatograph of waters company), and the viscosity is 1000-1200 cps (detected by an Emira viscometer).

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Abstract

The invention relates to a preparation method of environmentally friendly printing ink polyurethane coupling agent. The invention is characterized in that vulcabond and polyester polyol are used to generate performed polymer with -NCO end group, then dimethylolpropionic acid and 1,4-butanediol are used to operate the chain extension reaction, finally, spasmolytol is used to adjust the pH value toneutrality, ethanol is added into the spasmolytol to be agitated, and then the printing ink polyurethane coupling agent is attained. The agglutination fastness of the coupling agent is strong, and thebinding strength of the printing ink and printing backing material can be obviously promoted. The invention has the advantages that no harmful solvent exists in the processing process. The inventionfully accords with the environmentally friendly technical requirements of chemical engineering accessory ingredient.

Description

technical field [0001] The invention relates to a preparation method of an environment-friendly polyurethane linking agent for ink, which is added to printing ink to improve the bonding fastness of the ink and a printing substrate. It belongs to the technical field of chemical textile auxiliaries. Background technique [0002] Before the present invention, the conventional linking agent for ink was phenolic resin and rosin-modified phenolic resin, which only had the function of oxidative film-forming, but the adhesion fastness between ink and printing substrate was not high. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to overcome the above-mentioned deficiencies, and to provide a preparation method of an environmentally friendly polyurethane linker for ink with high adhesion of the ink to the substrate. [0004] The object of the present invention is achieved in this way: a kind of preparation method of the polyurethane linking agent for envi...

Claims

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Application Information

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IPC IPC(8): C09D11/10C08G18/10C08G18/83C09D11/00C09D11/102
Inventor 华明扬
Owner 江阴市诺科生物新材料科技有限公司
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