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Preparation method of dimer acid-modified itaconic acid epoxy resin

A technology of itaconic acid epoxy resin and dimer acid, which is applied in the field of modified epoxy resin, achieves the effects of strong operability, environmental protection and easy industrialization implementation

Active Publication Date: 2015-02-18
JINAN SHENGQUAN GROUP SHARE HLDG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] But, so far, also do not see in the prior art that the itaconic acid epoxy resin is modified to obtain the preparation method of corresponding resin with dimer acid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In a 1000ml four-necked bottle, add 180g of dimer acid (product of Aiturek, acid value 196mgkOH / g), 420g of itaconic acid epoxy resin (product of Shandong Shengquan Chemical Co., Ltd., EEW 192g / eq), double Phenol A (produced in Ufa, Russia) was 30g, fed with nitrogen, heated to 100°C, added 0.3g of catalyst triphenylphosphine, and kept at 140°C for 5h to obtain a resin with an epoxy equivalent of 506.7g / eq.

Embodiment 2

[0026] In a 1000ml four-necked bottle, add 210g of dimer acid (product of Aiturek, acid value 196mgkOH / g), 420g of itaconic acid epoxy resin (product of Shandong Shengquan Chemical Co., Ltd., EEW 192g / eq), double Phenol A (product of Ufa, Russia) 3g, blow nitrogen, heat up to 130°C, add catalyst triethylphosphine 0.084g, keep the temperature at 145°C for 8h to obtain a resin, the epoxy equivalent is 463.8g / eq.

Embodiment 3

[0028] In a 1000ml four-necked bottle, add 186g of dimer acid (product of Aiturek, acid value 196mgkOH / g), 403g of itaconic acid epoxy resin (product of Shandong Shengquan Chemical Co., Ltd., EEW 192g / eq), double Phenol A (produced in Ufa, Russia) 5.7g, blow nitrogen, heat up to 120°C, add catalyst tributylphosphine 0.26g, keep the temperature at 170°C for 2h to obtain a resin, the epoxy equivalent is 455.4g / eq.

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Abstract

The invention discloses a preparation method of dimer acid-modified itaconic acid epoxy resin, belonging to the technical field of modified epoxy resin. The preparation method disclosed by the invention comprises the following steps: 1) adding dimer acid, the itaconic acid epoxy resin and a chain extender into a reaction container, heating and stirring, introducing nitrogen gas and adding a catalyst when the temperature is raised to 100-130 DEG C; 2) raising the temperature to 140-180 DEG C and reacting at the constant temperature for 2-8 hours to obtain the dimer acid-modified itaconic acid epoxy resin. The molecular weight of the modified epoxy resin prepared by the preparation method disclosed by the invention is increased; nonpolar alkyl of the dimer acid is introduced into the structure, so that the flexibility of the modified epoxy system is increased, and the curing cross-linking density of the resin is lowered, and therefore, the dimer acid-modified itaconic acid epoxy resin is applicable to the fields of adhesives, paint, laminated materials and casting materials. The preparation method disclosed by the invention is simple in process, easy to operate and control, and suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of modified epoxy resins, in particular to a preparation method of dimer acid-modified itaconic acid epoxy resins. Background technique [0002] Epoxy resin refers to the general term for compounds that contain two or more epoxy groups in their molecular structure and can form a three-dimensional network cured product under appropriate chemical reagents. It is an important class of thermosetting resins. Because of its excellent mechanical properties, insulation properties, corrosion resistance, and adhesiveness, it is widely used in machinery, construction, electronics, chemical industry, aviation and other fields. [0003] The current epoxy resin is mainly synthesized from petroleum resources. With the depletion of petroleum resources, finding sustainable, high-quality and cheap petroleum substitutes is the key to the existence and development of the polymer industry. In addition, the most widely used typ...

Claims

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Application Information

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IPC IPC(8): C08G59/14
Inventor 江成真朱红军葛成利刘萌
Owner JINAN SHENGQUAN GROUP SHARE HLDG