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Light-sensitive self-initiated polyurethane acrylic ester oligomer and method for synthesizing the same

A urethane acrylate and self-initiating technology is applied in the field of urethane acrylate oligomer mixture and preparation, which can solve the problems of non-substitution and achieve the effects of reducing toxicity, simplifying formulation process and good compatibility

Inactive Publication Date: 2012-12-12
南通新昱化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these three components can affect various properties of the material, the basic functions of these three components can still be roughly distinguished and cannot replace each other.

Method used

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  • Light-sensitive self-initiated polyurethane acrylic ester oligomer and method for synthesizing the same
  • Light-sensitive self-initiated polyurethane acrylic ester oligomer and method for synthesizing the same
  • Light-sensitive self-initiated polyurethane acrylic ester oligomer and method for synthesizing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In a 3000ml reaction flask equipped with a thermometer, a stirrer, a dropping funnel, a condenser and a nitrogen inlet, add 400g of polyethylene glycol 400, then raise the temperature to 80°C, feed nitrogen throughout the reaction process, and drop 348g of toluene di The mixture of isocyanate (TDI) and 0.5% catalyst dibutyltin dilaurate, after reacting for 2 hours, raise the material temperature to 90°C and continue the reaction for 2 hours, stop the reaction, lower the system to room temperature, seal the reactor with black material, and heat up To 70°C, add a total of 90g of photoinitiator UV2959 (dissolved in 400g of ethyl acetate), continue the reaction for 1 hour after the addition, then add 186g of hydroxyethyl acrylate dropwise, continue the reaction for a certain period of time, and test with an infrared spectrometer The content of the isocyanate group in the reaction solution is until the absorption peak of this group disappears, the net solvent is vacuumed off,...

Embodiment 2

[0036] The material obtained in Example 1 is mixed with tripropylene glycol diacrylate in a ratio of 1:1

[0037] (DPGDA) mixed, coated on a glass plate to form a 0.1mm liquid film, irradiated with a high-pressure mercury lamp, and the liquid film can be polymerized and solidified without adding a photoinitiator.

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Abstract

The invention discloses a photosensitive self-initiation polyurethane acrylic ester oligomer and a method for synthesizing the same. The method comprises the following steps: first, reacting diisocyanate with a terminal hydroxy compound so as to obtain a compound with isocyanate as the terminal group; and then, reacting the hydroxyl-containing light initiator and acrylic acid hydroxy ester with the rest isocyanate to obtain the polyurethane acrylic ester oligomer that has a mixed terminal capped by propylene acyloxy and light initiator active group. When in use, the photosensitive self-initiation polyurethane acrylic ester oligomer can achieve the photosensitive self-initiation polymerization and curing proposal with the addition of no or little light initiator. Besides, the photosensitive self-initiation polyurethane acrylic ester oligomer also can be used as a macro molecular light initiator; and the photosensitive self-initiation polyurethane acrylic ester oligomer has excellent compatibility with other polyurethane acrylic ester oligomers.

Description

Technical field: [0001] The invention belongs to a photosensitive self-initiating polyurethane acrylate oligomer mixture and a preparation method. Background technique: [0002] UV curing technology is a new technology in the material industry. It has many advantages such as no solvent, no pollution, energy saving, resource saving, etc. It is an environmentally friendly new technology. For nearly half a century, this technology has been widely used in industrial fields such as coatings, inks, and adhesives, and has increasingly shown good development prospects. [0003] In the formulation of UV-curable products, the most basic components are photocurable resin oligomer, monomer diluent and photoinitiator. Although these three components can affect various properties of the material, the basic functions of these three components can still be roughly distinguished and cannot replace each other. Photocurable resin is the most basic polymeric material, which determines the ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/67C08G18/42C08G18/48C08G18/32C08G18/76
Inventor 周谭
Owner 南通新昱化工有限公司
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