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A kind of high-solid polyurethane ink resin, preparation method and application thereof

A technology of ink resin and polyurethane, applied in the direction of polyurea/polyurethane coating, ink, application, etc., can solve the problems of loss of usability, high viscosity, etc., and achieve the effect of enhancing affinity and excellent application performance

Active Publication Date: 2022-07-12
WANHUA CHEM BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In fact, the solid content of the resin in the prior art is generally below 35%, if the solid content is increased to more than 45%, it will lose its usability due to excessive viscosity

Method used

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  • A kind of high-solid polyurethane ink resin, preparation method and application thereof
  • A kind of high-solid polyurethane ink resin, preparation method and application thereof
  • A kind of high-solid polyurethane ink resin, preparation method and application thereof

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preparation example Construction

[0033] A preparation method of high-solid polyurethane ink resin, comprising the following steps:

[0034] 1) Preparation of functional amine chain extender E: put amine chain extender and solvent isopropanol into the flask, stir evenly at room temperature, add glycidyl tertiary carbonate dropwise to it, drip it for 0.5 to 1 hour, then The temperature is raised to 55 to 65° C. and the reaction is stirred for 4 to 6 hours to obtain a functional amine chain extender E, which is kept for later use.

[0035] 2) Preparation of functional end-capping agent T: put monohydroxy tertiary amine, lactone and catalyst tetrabutyl titanate in a flask, pass nitrogen, stir evenly, heat up to 140-160 ° C and react for 24-36 hours to obtain functional Type end capping agent T, keep it for later use.

[0036] 3) Put the polymer polyol, polyisocyanate, catalyst and part of the solvent into the flask, pass nitrogen, react at 60~120°C for 3~5 hours, add functional end capping agent T, and continue ...

preparation example E1

[0079] Put 50g IPDA and 83.53g solvent IPA into the flask, stir evenly at room temperature, add 33.53g of glycidyl tertiary carbonate E10P dropwise to it, drop it in 0.5 hours, then be heated to 60 ° C and stir for 5 hours to obtain the functional type Amine chain extender E1, molecular weight 284.42, solid content 50%.

preparation example E2

[0081] Put 50g HDA and 108.96g solvent IPA into the flask, stir evenly at room temperature, add 58.96g of glycidyl tertiary carbonate E10P dropwise to it, drop it in 0.5 hours, then heat up to 60°C and stir for 5 hours to prepare the functional type Amine chain extender E1, molecular weight 253.22, solid content 50%.

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Abstract

The invention discloses a high-solid polyurethane ink resin, a preparation method and application thereof. The resin is prepared by reacting raw materials comprising the following components in parts by mass: 28-46 parts of polymer polyol, 3-15 parts of polyisocyanate , 2-9 parts of functional amine chain extender E, 0.1-13 parts of functional end-capping agent T, and 30-60 parts of solvent. The polyurethane resin of the invention still has lower viscosity and higher molecular weight when the solid content is above 45%, and the prepared ink has excellent leveling property, adhesion fastness, and anti-blocking properties.

Description

technical field [0001] The invention relates to the technical field of polyurethane ink resins, in particular to a high-solid polyurethane ink resin, a preparation method and applications thereof. Background technique [0002] In the domestic plastic flexible packaging printing field, gravure printing occupies an absolute dominant position with its exquisite printing effect and high printing efficiency. The inks used in gravure printing can be divided into polyurethane inks, acrylic inks, chlorinated polypropylene inks and polyamide inks according to the main resin type. Among them, polyurethane ink has the characteristics of wide adaptability to substrates, integration of dry and light cooking, and general use of surface printing and printing. [0003] GB38507-2020 has made mandatory regulations on the limits of volatile organic compounds (VOCs) in various inks including gravure inks, of which the limit of solvent-based gravure inks is ≤75%. Polyurethane inks on the marke...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/42C08G18/10C08G18/32C09D175/06C09D175/04C09D11/102
CPCC09D175/06C09D175/04C08G18/10C08G18/4238C08G18/425C08G18/4825C08G18/4018C09D11/102C08G18/3275C08G18/3271
Inventor 吴迪贾海亭何国平雷生亮张磊
Owner WANHUA CHEM BEIJING
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