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Room-temperature self-crosslinking water-soluble polyurethane acrylic resin and preparation method and application thereof

A polyurethane acrylic, water-based polyurethane technology, applied in the direction of polyurea/polyurethane coatings, polyurea/polyurethane adhesives, applications, etc., can solve the problems of air pollution, energy consumption, affecting the drying performance of resin, etc., to improve the conversion rate, Improve drying speed, not easy to gel and delaminate

Inactive Publication Date: 2009-09-30
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solvent with high boiling point is difficult to remove, and the residue in the emulsion will affect the drying performance of the resin; while the solvent with low boiling point must be removed at the end of the reaction, which will cause air pollution or consume energy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] This embodiment adopts the in-situ emulsion polymerization method to prepare the room temperature self-crosslinking waterborne polyurethane acrylate resin in two steps:

[0043] (1) Synthesis of water-based polyurethane prepolymer;

[0044] (2) Synthesis of room temperature self-crosslinking waterborne polyurethane acrylic resin.

[0045] The raw materials of the synthetic water-based polyurethane acrylic resin used in this example and their proportions are shown in Table 1.

[0046] Table 1 Raw materials and proportions of synthetic water-based polyurethane acrylic resin

[0047] Polyurethane prepolymer monomer Dosage (g) Acrylate monomer Dosage (g) IPDI 32.44 DAAM 3.40 TMXDI 11.89 MAA 1.00 PEA 100.00 BA 35.20 NPG 2.61 2-EHA 22.50 DMPA 8.58 MMA 51.90 HEMA 5.15 TEA 5.83 ADH 5.15 Subtotal 171.65 Subtotal 114.00 Initiator Dosage (g) water Dosage (g) AIBN 5....

Embodiment 2

[0060] The room temperature self-crosslinking waterborne urethane acrylate resin was prepared according to the same steps as in Example 1, and the raw materials and proportions of the synthetic waterborne urethane acrylic resin used in it are shown in Table 3.

[0061] Table 3 Raw materials and proportions of synthetic water-based polyurethane acrylic resin

[0062] Synthetic Polyurethane Prepolymer Monomer Dosage (g) Acrylate monomer Dosage (g) IPDI 32.44 DAAM 5.13 TMXDI 11.89 MAA 3.42 PPG 100.00 BA 63.27 NPG 2.61 2-EHA 22.23 DMPA 8.58 MMA 76.95 HEMA 5.15 TEA 5.83 ADH 5.15 Subtotal 171.65 Subtotal 171.00 Initiator Dosage (g) water Dosage (g) AIBN 3.43 Deionized water 472.00 APS 1.37 Total mass of material (g) 819.45

[0063] In Table 3, PPG is a polyoxypropylene glycol with a molecular weight of 2000; the same below.

[0064] In Table...

Embodiment 3

[0069] In this example, the self-crosslinking water-based polyurethane acrylate resin is prepared by the in-situ emulsion polymerization method at room temperature. The steps are the same as those in Example 1.

[0070] Table 4 Raw materials and proportions of synthetic water-based polyurethane acrylic resin

[0071] Synthetic Polyurethane Prepolymer Monomer Dosage (g) Acrylate monomer Dosage (g) IPDI 28.64 DAAM 2.19 2. 4HTDI 11.61 MAA 1.10 PTMG 100.00 BA 51.51 DPG 2.68 MMA 54.80 DMPA 7.89 HEMA 3.28 TEA 5.36 ADH 4.93 Subtotal 164.39 Subtotal 109.60 Initiator Dosage (g) water Dosage (g) AIBN 3.29 Deionized water 411.00 APS 1.37 Total mass of material (g) 689.65

[0072] In Table 4, PTMG is polytetramethylene ether glycol with a molecular weight of 2000; 2,4HTDI is 2,4 methylcyclohexyl diisocyanate; DPG is dipropylene glycol; the same be...

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Abstract

The invention discloses a room-temperature self-crosslinking water-soluble polyurethane acrylic resin and a preparation method and an application thereof. The preparation method adopts an in-situ emulsion polymerization method and improves the prior preparation method, introduces tetramethyl benzene dimethylene diisocyanate or 2, 4 methyl cyclohexyl diisocyanate, and dipropylene glycol or neopentyl glycol functioning as chain extendor in raw materials, thereby lowering the viscosity of polyurethane prepolymer, and achieving the purpose of performing the synthetic reaction without organic solvent; oil-soluble evocating agent and water-soluble evocating agent are adopted to together evocate radical copolymerization so that oil-soluble monomer and water-soluble monomer can more effectively perform the radical copolymerization, thereby improving the reaction conversion rate. In addition, the combination of the two evocating agents also leads emulsion in the reaction to keep stable without easily jellifying and layering. The resin can be used for preparing plastics, aluminum foil package compound gel, paper-plastics compound gel, water color ink, water oil polish, water wooden ware paint or water plastic paint.

Description

technical field [0001] The invention relates to a preparation method of urethane acrylate resin, in particular to a room temperature self-crosslinking waterborne urethane acrylate resin and its preparation method and application. Background technique [0002] Traditional coatings and adhesives use a large amount of volatile organic solvents (VOCs), which cause great harm to the environment, and their use is increasingly restricted. The product has the advantages of non-flammable, non-toxic, non-polluting the environment, saving energy and resources, and has developed rapidly. The performance of such products mainly depends on the resin, so to improve the performance of water-based coatings, water-based varnishes, and water-based adhesives, we should start with research and development of high-performance water-based resins. [0003] Waterborne polyurethane acrylic resin combines the advantages of polyurethane PU and polyacrylate PA, and has the advantages of high hardness, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/66C08G18/10C09D11/10C09J175/04C09D175/04
Inventor 王小妹何彦萱范云玉
Owner SUN YAT SEN UNIV
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