Dendritic hyper-branched polymer, preparation method and application thereof

A branched polymer and dendritic technology, applied in the field of dendritic hyperbranched polymers, can solve the problem of low branching degree, achieve high branching degree, short production cycle, and easy operation

Inactive Publication Date: 2009-09-23
SHANGHAI HUAYI GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To overcome the shortcoming of low branching degree in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 10g ethylene glycol dimethacrylate (EGDMA), 15ml toluene, 0.2g azobisisobutyronitrile (AIBN), 2g butyl mercaptan respectively in the reactor with stirring, heating and thermometer, stirring Simultaneously heat up, keep temperature 65 ℃ of reaction 2.5hr, obtain the viscous polyethylene glycol dimethacrylate (poly-EGDMA) solution 23g, record monomer transformation rate 90% with precipitation method, GPC analysis Mn= 5650.

Embodiment 2

[0023] Add 104g divinylbenzene (DVB), 2.08g azobisisobutyronitrile (AIBN), 8.08g dodecyl mercaptan respectively in the reactor with stirring, heating, thermometer, 2hr, get viscous 114 g of polydivinylbenzene (poly-DVB) solution, the monomer conversion rate was 44% as measured by the precipitation method, and the GPC analysis Mn=3807.

Embodiment 3

[0025] Add 104g divinylbenzene (DVB) respectively in the reactor with stirring, heating, thermometer, 1.04g azobisisobutyronitrile (AIBN), 8.08g dodecyl mercaptan, heat up while stirring, The temperature was maintained at 70° C. for 3 hours to obtain 113 g of a viscous polydivinylbenzene (poly-DVB) solution. The conversion rate of the monomer was 56% as measured by the precipitation method, and the GPC analysis Mn=4875.

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PUM

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Abstract

The invention discloses a dendritic hyper-branched polymer, a preparation method and application thereof. The homo-polymerized or co-polymerized dendritic hyper-branched polymer is obtained by taking poly-alkenyl monomers or poly-alkenyl monomers and mono-alkenyl monomers as raw materials to carry out polymerization in the presence of radical initiator and chain transfer agent. The invention comprises the following components by the weight percentage: 69% to 92% of poly-alkenyl monomers or poly-alkenyl monomers and mono-alkenyl monomers, 0.05% to 2% of radical initiator and 7% to 30% of chain transfer agent. In the invention, the monomer conversion rate of polymers is 40% to 90%, and the number average molecular weight of polymers is 2,000 to 6,000. Compared with the prior art, the invention has the advantages of various material sources, high product branching coefficient and short production period, therefore, the invention is applicable to industrialized production on a large scale. The photo-curable coatings which are obtained by mixing the dendritic hyper-branched polymer of the invention, photo initiator and photo-initiation additive are applicable to coil coatings, board coatings, and film coatings for electronic products.

Description

technical field [0001] The invention relates to a dendritic hyperbranched polymer, a preparation method and application. Background technique [0002] With a highly branched structure, the polymer is difficult to crystallize, has no chain entanglement, exhibits good solubility and low solution viscosity. The molecular surface of dendritic hyperbranched polymers contains a large number of terminal functional groups, so that it can be mixed with photoinitiators and photoinitiation aids as light-curing coatings for coil steel paints, wood paints, and coatings for electronic products . [0003] In the prior art, U.S. Patent No. 6,713,584B1 has reported a kind of synthetic method of branched polymer, uses mercaptan as chain transfer agent, with a kind of polyfunctional group vinyl monomer and conventional vinyl monomer through traditional The free radical polymerization carries out the copolymerization reaction to obtain the target product. However, in this method, the amount ...

Claims

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Application Information

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IPC IPC(8): C08F222/10C08F220/18C08F212/36C08F122/10C08F112/36C08F2/38C09D133/08C09D135/02C09D135/06C09D125/02
Inventor 许家福唐来安吴梓新
Owner SHANGHAI HUAYI GRP CO
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