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Waterborne polyurethane acrylate emulsion and waterborne plastic ink prepared by same

A polyurethane acrylate and acrylate technology, applied in the chemical industry, can solve the problems of small molecular weight of the polyurethane part, affecting the water resistance of the ink, insufficient mechanical strength, etc., and achieve the effects of strong peeling force, good PP adhesion fastness, and good water resistance.

Active Publication Date: 2017-10-24
SUN YAT SEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when preparing polyurethane acrylate emulsions, before adding hydroxyl-containing acrylate monomers to end-block polyurethane prepolymers, the amino-terminated chain extension and emulsification processes are generally not carried out, resulting in a generally small molecular weight of the polyurethane part and insufficient mechanical strength. , used to prepare plastic composite ink, its peeling force is insufficient, and it affects the water resistance of the ink

Method used

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  • Waterborne polyurethane acrylate emulsion and waterborne plastic ink prepared by same
  • Waterborne polyurethane acrylate emulsion and waterborne plastic ink prepared by same
  • Waterborne polyurethane acrylate emulsion and waterborne plastic ink prepared by same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Preparation of water-based polyurethane acrylate emulsion:

[0039] The main composition of described polyurethane pre-emulsion is as follows:

[0040]

[0041]

[0042] S1. Add IPDI to the reaction kettle, heat up to 90°C, add dehydrated BY3305, PBA-1000 and DMPA, and react until the residual -NCO reaches the theoretical value; drop to room temperature, add triethylamine, and stir well; the reaction process Use acetone to control the viscosity to avoid climbing rods; put the reaction kettle in an ice-water bath, add IPDA and deionized water and stir at high speed for 2 hours at a speed of 1200r / min; add isocyanate ethyl acrylate to continue the reaction for 1 hour;

[0043] S2. Control the temperature to 60°C, vacuumize for 1 hour to remove acetone, and obtain a polyurethane pre-emulsion;

[0044]S3. Weigh 15.0g methyl methacrylate, 4.0g butyl acrylate and 1.0g acrylic acid, and mix them uniformly for subsequent use; 0.2g ammonium persulfate is dissolved in 5...

Embodiment 2

[0053] 1. Preparation of water-based polyurethane acrylate emulsion:

[0054] The main composition of described polyurethane pre-emulsion is as follows:

[0055] Substance name

Mass / g

Hexamethylene diisocyanate (HDI)

10.9

Sulfonate polyol (BY3305, Mn=2000)

68.4

Polyether polyol (N210, Mn=1000)

17.1

2,2-Dimethylolpropionic acid (DMPA)

1.0

sodium hydroxide

0.3

Isophoronediamine (IPDA)

1.5

Ethyl isocyanate acrylate

0.8

Deionized water

180

[0056] S1. Add HDI to the reaction kettle, heat up to 70°C, add dehydrated BY3305, N210, DMPA and 0.02g dibutyltin dilaurate, react until the residual -NCO reaches the theoretical value; cool down to room temperature, add sodium hydroxide , stir evenly; during the reaction process, use acetone to control the viscosity to avoid climbing rods; place the reaction kettle in an ice-water bath, add IPDA and deionized water and stir at a high spe...

Embodiment 3

[0065] 1. Preparation of water-based polyurethane acrylate emulsion:

[0066] The main composition of described polyurethane pre-emulsion is as follows:

[0067] Substance name

Mass / g

Isophorone Diisocyanate (IPDI)

19.8

Sulfonate polyol (BY3301, Mn=1500)

49.0

Polytetrahydrofuran ether glycol (PTMEG-1500)

24.3

Sodium ethylenediaminoethanesulfonate (AAS)

2.0

Hexamethylenediamine

3.9

Ethyl isocyanate acrylate

1.0

Deionized water

200

[0068] S1. Add IPDI to the reaction kettle, raise the temperature to 90°C, add dehydrated BY3301, PTMEG-1500 and AAS, and react until the residual -NCO reaches the theoretical value; use acetone to control the viscosity during the reaction to avoid climbing rods; Place the kettle in an ice-water bath, add hexamethylenediamine and deionized water and stir at high speed for 2 hours at a speed of 1000r / min; add isocyanate ethyl acrylate and continue the react...

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PUM

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Abstract

The invention discloses a waterborne polyurethane acrylate emulsion and waterborne plastic ink prepared by the same. During an emulsifying process of polyurethane prepolymer, an amino chain extender is used to extend the chain and seal the end, then polyurethane prepolymer is reacted with isocyanate acrylate to introduce double bonds, and finally graft acrylate, thus preparing the waterborne polyurethane acrylate emulsion. The obtained waterborne polyurethane acrylate emulsion has large molecular weight of polyurethane segment, improves the mechanical property of waterborne polyurethane acrylate, has both the flexibility of polyurethane and the excellent adhesive force on PET and NY, and has both the good water resistance of polyacrylate and the adhesive fastness of PP; no emulsifier exists in the waterborne polyurethane acrylate emulsion, thus an excellent dispersion effect on pigments is obtained and the waterborne polyurethane acrylate emulsion can be used as grinding resin to prepare mill base. The waterborne polyurethane acrylate emulsion can be used for preparing waterborne plastic ink, the prepared waterborne plastic ink is non-toxic and odorless, good in resolubility, good in water resistance, has excellent adhesive force on substrates such as PP, PET and NY, has strong release force and can be applied to plastic packaging composite ink.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a water-based polyurethane acrylate emulsion and the prepared water-based plastic ink. Background technique [0002] At present, my country's plastic film packaging printing basically uses solvent-based plastic inks, and the printing materials are mainly PET, OPP, PE, etc., and these materials are non-absorbent. As far as plastic composite inks are concerned, the domestic systems are mainly based on chlorinated polypropylene and polyurethane systems. The inks contain a large amount of harmful solvents (including toluene and methyl ethyl ketone) and the use of harmful halogen monomers has caused serious pollution to the environment. At present, most water-based inks are developed for absorbent substrates such as paper and cardboard. For non-absorbent plastic substrates, only a few domestic companies are trying to use them. There are still a lot of problems i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08F220/14C08F220/18C08F220/06C08F220/56C09D11/023C09D11/102
CPCC08F290/067C09D11/023C09D11/102C08F220/14
Inventor 王小妹郑嘉颖冯文照麦允程杨焕丽伍雪芬
Owner SUN YAT SEN UNIV
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