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Water-resistant waterborne polyurethane ink vehicle and preparation method thereof

A technology of water-based polyurethane and ink connecting material, which is applied in the direction of ink, household appliances, application, etc., can solve the problem of insufficient water resistance of water-based polyurethane ink connecting material

Active Publication Date: 2016-07-20
禾瑞(漳州)助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a water-resistant water-based polyurethane ink binder and its preparation method for the problem of insufficient water resistance of the water-based polyurethane ink binder

Method used

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  • Water-resistant waterborne polyurethane ink vehicle and preparation method thereof
  • Water-resistant waterborne polyurethane ink vehicle and preparation method thereof
  • Water-resistant waterborne polyurethane ink vehicle and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] The preparation method of a kind of water-resistant type water-based polyurethane ink binder of the present embodiment is as follows:

[0030] (1) Take 200ml of absolute ethanol, add hydrochloric acid dropwise to it to adjust the pH value to 3~4, then take 25ml of 3-methacryloxypropyltrimethoxysilane and add it to the ethanol-hydrochloric acid system for 30min Hydrolyze thoroughly until the mixed solution is clear and transparent, and let it stand at room temperature for later use;

[0031] (2) Weigh 1.0g of bacterial cellulose and 100.0g of thoroughly hydrolyzed silanol and ethanol-hydrochloric acid mixed solution and place it in a conical flask. The surface modification process of bacterial cellulose requires a reaction temperature of 60°C and a reaction time of 2h , the mechanical stirring speed is 60r / min, after the modification reaction is finished, the bacterial cellulose is vacuum-filtered and washed 3 times with absolute ethanol to prepare 1.06g of modified bact...

Embodiment 2

[0037] The preparation method of a kind of water-resistant type water-based polyurethane ink binder of the present embodiment is as follows:

[0038] (1) Take 300ml of absolute ethanol, add hydrochloric acid dropwise to it to adjust the pH value to 3~4, then take 34ml of 3-(2,3-glycidoxy)propyltrimethoxysilane and add it to the above ethanol- Carry out hydrolysis in the hydrochloric acid system for 30 minutes until the mixed solution is clear and transparent, and let it stand at room temperature for later use;

[0039] (2) Weigh 2.0g of bacterial cellulose and 200.0g of thoroughly hydrolyzed silanol and ethanol-hydrochloric acid mixed solution and place it in a conical flask. The surface modification process of bacterial cellulose requires a reaction temperature of 60°C and a reaction time of 2h , the mechanical stirring speed is 60r / min, after the modification reaction is finished, the bacterial cellulose is vacuum filtered and washed 3 times with absolute ethanol to prepare ...

Embodiment 3

[0045] The preparation method of a kind of water-resistant type water-based polyurethane ink binder of the present embodiment is as follows:

[0046] (1) Take 200ml of absolute ethanol, add hydrochloric acid dropwise to it to adjust the pH value to 3~4, then measure 20ml of 3-(2,3-glycidoxy)propyltrimethoxysilane and add it to the above ethanol- Carry out hydrolysis in the hydrochloric acid system for 30 minutes until the mixed solution is clear and transparent, and let it stand at room temperature for later use;

[0047] (2) Weigh 1.5g of bacterial cellulose and 150.0g of thoroughly hydrolyzed silanol and ethanol-hydrochloric acid mixed solution and place it in a conical flask. The surface modification process of bacterial cellulose requires a reaction temperature of 60°C and a reaction time of 2h , the mechanical stirring speed is 60r / min, after the modification reaction is finished, the bacterial cellulose is vacuum filtered and washed 3 times with absolute ethanol to prepa...

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Abstract

The invention discloses a water-resistant waterborne polyurethane ink vehicle and a preparation method thereof. The main components of the ink vehicle are bacterial cellulose after modification treatment by a silane coupling agent and waterborne polyurethane prepolymer, wherein the length of the bacterial cellulose is 200-500nm, and the diameter is 60-100nm. The preparation method comprises the following steps: hydrolysis of the silane coupling agent, modification of the bacterial cellulose, synthesis of the waterborne polyurethane prepolymer, synthesis of a waterborne polyurethane emulsion and preparation of the water-resistant waterborne polyurethane ink vehicle. According to the water-resistant waterborne polyurethane ink vehicle disclosed by the invention, the 24h water absorption is lower than 8.0%; and the preparation method is simple and conforms to the requirement of environmental protection for sustainable development.

Description

technical field [0001] The invention belongs to the technical field of preparation of organic polymer materials, in particular to a water-resistant water-based polyurethane ink binder mainly based on the cross-linked structure of bacterial cellulose and polyurethane molecular chains and a preparation method thereof. Background technique [0002] The performance of water-based ink is directly affected by the binder. The early water-based ink binder is mainly a resin modified by rosin and maleic acid, and its performance is poor. Later, people began to apply the copolymer of acrylate monomer and styrene to water-based ink. Although it can have outstanding performance in terms of gloss and weather resistance, the effect of improving water resistance is still not obvious. [0003] At present, the research on the water resistance of water-based inks is mainly focused on improving the crosslinking degree of the ink coating film. Common methods include internal crosslinking, extern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/102C09D11/03C08G18/10C08G18/64C08G18/32
CPCC08G18/10C08G18/6484C09D11/03C09D11/102C08G18/3206C08G18/64
Inventor 张浩辛长征陈垒仝瑞芳李姝汶
Owner 禾瑞(漳州)助剂有限公司
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