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Hyperbranched polyurethane-acrylate UV (Ultraviolet) light cured resin

A polyurethane acrylate and light-curing resin technology, which is applied in the direction of polyurea/polyurethane coatings, polyurea/polyurethane adhesives, adhesive types, etc., can solve the problems of non-acrylic double bonds and inability to be light-cured

Inactive Publication Date: 2014-04-16
JIANGMEN POLYTECHNIC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Macromolecules, Vol.36, 613-620 (2003), Chinese patent CN 1385450 (2002), Chinese patent CN 1385451 (2002), Chinese patent CN1791621 (2006), Chinese patent CN1966544 (2007), Chinese patent CN101074278 (2007) have overruns According to reports on the structure of polyurethanes, such hyperbranched polyurethanes all contain urethane bonds and urea bonds, but do not contain acrylic double bonds and cannot be photocured.

Method used

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  • Hyperbranched polyurethane-acrylate UV (Ultraviolet) light cured resin
  • Hyperbranched polyurethane-acrylate UV (Ultraviolet) light cured resin
  • Hyperbranched polyurethane-acrylate UV (Ultraviolet) light cured resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 6.75g of 1,4-butanediol (BDO) and 20g of N, N-dimethylformamide (DMF) to 33.344g of isophorone diisocyanate (IPDI) under stirring at 50°C. Reaction 5 Hours, a colorless transparent liquid was obtained; the reaction system was cooled to 0°C, and a mixture of 7.89g diethanolamine (DEOA) and 20g N, N-dimethylformamide (DMF) was added to the reaction system and reacted for 3 hours , to obtain a colorless transparent liquid; control the reaction conditions, add capping after 3 hours of reaction, separate and dry to obtain white powder hyperbranched polyurethane.

[0018] 44.458g IPDI and 50g DMF were added under stirring at 50°C, 23.224g HEA and 30g DMF solution were added dropwise to the constant pressure dropping funnel, and the reaction was carried out for 4 hours to obtain a semi-adduct of IPDI / HEA.

[0019] According to the remaining -OH content in the hyperbranched polyurethane, add IPDI / HEA in an equimolar amount, raise the temperature to 40°C, react for 4 hours a...

Embodiment 2

[0022] Dissolve 26.123g of toluene diisocyanate (TDI) in 30g of N,N-dimethylformamide (DMF), add 30g of polyethylene glycol 400 (PEG 400) and 10g of N,N-dimethylformamide (DMF) under stirring at 25°C A mixture of formamide (DMF) was reacted at constant temperature for 3 hours to obtain a yellowish transparent liquid; the system was cooled to -10°C, and 7.89g of diethanolamine (DEOA) and 20g of N,N-dimethylformamide (DMF ) was added to the reaction system and reacted for 3 hours to obtain a yellowish transparent liquid; raise the temperature to 40°C and react for 2.5 hours to end-cap, separate and dry to obtain a white powder hyperbranched polyurethane acrylate UV light Cured resin.

[0023] 33.344g IPDI and 50g DMF were added under stirring at 40°C, and 19.521g HPA and 40g DMF solution were added dropwise into the constant pressure dropping funnel, and the semi-adduct of IPDI / HPA was obtained after 4 hours of reaction.

[0024] According to the remaining -OH content in the hy...

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Abstract

The invention provides a preparation method for hyperbranched polyurethane-acrylate UV (Ultraviolet) light cured resin, and relates to the application of the resin. The preparation method of the resin comprises the following steps: 1), a diisocyanate monomer reacts with divalent alcohol to obtain a reaction intermediate A2 containing an isocyanate radical; 2) the reaction intermediate A2 reacts with a single-amino-group multi-oxhydryl monomer to obtain a reaction intermediate ABn containing isocyanate and multi-hydroxyl; 3) the reaction intermediate ABn performs a self-polycondensation reaction to obtain hyperbranched polyurethane (HPU-Xm); 4) the diisocyanate monomer reacts with an acrylic acid hydroxyl ester monomer to obtain a reaction intermediate C containing isocyanate and double unions; 5) C reacts with the HPU-Xm to obtain the hyperbranched polyurethane-acrylate UV (Ultraviolet) light cured resin. The preparation method is wide in the raw material source, good in controllability and easy to regulate the number of double unions of the product. The product is applicable to a carrier for a quickly UV-cured coating, an adhesive, an elastomer or an active compound or a carrier for catalysts, and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of photocurable resins, in particular to a novel structure hyperbranched polyurethane acrylate UV photocurable resin. Background technique [0002] Ultraviolet (UV) curing technology has the advantages of fast curing, low energy consumption, high efficiency, and less pollution, and conforms to the "5E" principle: Energy (energy saving), Ecology (ecological environmental protection), Economy (economy), Ease of application (easy to apply ), Excellence of finish (excellent performance), is an environmentally friendly green technology. In 1946, Inmont Company of the United States applied for the first patent of UV curing ink. In 1968, Bayer Company of Germany developed the first generation of UV curing wood coatings. UV curing technology developed rapidly in the world. [0003] In 1952, Flory proposed the possibility of preparing highly branched polymers from multifunctional monomers. In the mid-1980s, Kim et a...

Claims

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Application Information

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IPC IPC(8): C08G18/67C08G18/32C09D175/16C09J175/16
CPCC08G18/12C08G18/672C08G18/833
Inventor 孙宁冯春云程建徐朝华李珩姜少华李亦彪黄晓昌
Owner JIANGMEN POLYTECHNIC
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