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Flexibility-adjustable core adding type hyper-branched urethane acrylate resin and preparing method

A technology of polyurethane acrylate and hyperbranched polyurethane, which is applied in polyurea/polyurethane coatings, polyurea/polyurethane adhesives, adhesive types, etc. It can solve the problems of molecular structure and the number of double bonds that cannot be adjusted, and achieve a wide range of applications. The effect of applying the foreground

Inactive Publication Date: 2015-06-10
JIANGMEN POLYTECHNIC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The number of urethane bonds contained in the obtained HBPUA is relatively high, but the molecular structure and the number of double bonds cannot be adjusted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Under stirring at 40°C, dissolve 33.33 g of isophorone diisocyanate (IPDI) in 50 g of DMF, add it to a mixture of 4.60 g of glycerin and 10 g of N, N-dimethylformamide (DMF), and react for 2 hours , a colorless transparent liquid 1 was obtained; at 40°C, 13.520g of 1,4-butanediol (BDO) and 25g of N, N-dimethylformamide (DMF) were added, and the reaction was stirred for 3 hours to obtain a colorless transparent liquid 2. Continue to add 66.66 g of Isofor IPDI and 75 g of DMF, and react for 3 hours to obtain a colorless transparent liquid. 3; Cool the reaction system to 2°C, and add a mixture of 31.54 g of diethanolamine (DEOA) and 40 g of DMF to the reaction system In the process, the reaction conditions were controlled, and after 2 hours of reaction, the end was capped, separated and dried to obtain a new nucleated UV photocurable nucleated hyperbranched polyurethane with adjustable flexibility in the form of white powder. Add the mixed solution of 33.33g IPDI and 50g D...

Embodiment

[0023] Example 2: Under stirring at 45°C, 13.93g of toluene diisocyanate (TDI) was dissolved in a mixture of 20 DMF, added to a mixture of 2.72g of pentaerythritol and 10g of DMF, and reacted for 1.5 hours to obtain a light yellow transparent liquid 1; Add 4.96g of ethylene glycol (EG) and 10g of DMF, continue to stir, react for 2 hours, capped, separated and dried to obtain a white powdery new nucleated UV photocurable nucleated hyperbranched polyurethane with adjustable flexibility. Under stirring at 45°C, add the mixed solution of 13.06g of HEA and 40g of DMF to the mixed solution of 13.93g of TDI and 40g of DMF, and react for 3 hours to obtain the semi-adduct of IPDI / HEA. Raise the temperature to 55°C, add 0.028mol HBPU-OH to the IPDI / HEA semi-adduct, react for 3 hours, capping, separate and dry to obtain a new type of nucleated UV light-cured nucleated white powder with adjustable flexibility Hyperbranched polyurethane acrylate.

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PUM

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Abstract

The invention provides a preparing method of a core adding type hyper-branched urethane acrylate (HBPUA) resin and the purpose of the resin. According to the preparing method, glycerin (or pentaerythritol), diisocyanate and polyhydric alcohol chain extenders react, so that hyper-branched urethane acrylate (HPBU-Xn, and n=3 or 4) containing terminal hydroxyl groups is obtained. The HPBU-Xn can continue to react with the diisocyanate and polyhydroxyl mono-amino monomers to prepare HPBU-Xan (a>=1) with six (or eight) terminal hydroxyl groups. Hydroxyalkyl acrylate reacts with the diisocyanate, so that a reaction middle body C containing acrylic double-bond terminal groups and isocyanate groups is obtained; the reaction middle body C reacts with the HPBU-Xan to prepare the UV solidification HBPUA resin. The number of terminal double bonds of the product is adjustable, UV solidification can be achieved, different chain extenders are introduced so that the flexibility can be adjusted, and the core adding type HBPUA resin can be compounded with other materials to serve as a UV solidification coating or an adhesive or others, so that the comprehensive performance of the materials is improved.

Description

technical field [0001] The invention belongs to the technical field of photocurable resins, and in particular relates to a preparation method of a novel nucleated UV light-cured nucleated hyperbranched polyurethane acrylate resin with adjustable flexibility. Background technique [0002] Ultraviolet (UV) curing is the most widely used type of curing technology in radiation curing. It emerged in the 1960s. German Bayer company took the lead in commercializing UV curing technology and developed the first generation of UV curing coatings. In our country, it developed rapidly after the 1990s. This technology has high production efficiency, fast curing speed, low pollution, energy saving, and is an environmentally friendly technology. [0003] Hyperbranched polymers have the characteristics of three-dimensional structure, low viscosity, high reactivity, and simple synthesis method. And it has a large number of terminal functional groups, which can be modified to prepare differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/32C08G18/66C08G18/48C09D175/14C09J175/14
Inventor 孙宁陈婵程建徐朝华李珩姜少华李亦彪黄晓昌
Owner JIANGMEN POLYTECHNIC