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Maleimide modified p-tert-butyl phenol formaldehyde resin and synthesis method thereof

A technology of maleimidophenol and p-tert-butylphenol is applied in the field of maleimide-modified p-tert-butylphenol formaldehyde resin and its synthesis, which can solve the problem of restricting the use of Koresin resin and having high technical requirements. , high cost and other problems, to achieve the effect of easier control of product structure, simple process and low cost

Active Publication Date: 2020-06-05
SHANDONG YANGGU HUATAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, koresin resin is synthesized by the reaction of alkylphenol and acetylene, and the synthesis process is a gas-solid reaction, with complex process, high technical requirements and high cost.
Therefore, the high cost limits the application field of Koresin resin, and it is only used in some high-end products at present

Method used

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  • Maleimide modified p-tert-butyl phenol formaldehyde resin and synthesis method thereof
  • Maleimide modified p-tert-butyl phenol formaldehyde resin and synthesis method thereof
  • Maleimide modified p-tert-butyl phenol formaldehyde resin and synthesis method thereof

Examples

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Effect test

Embodiment 1

[0026] A kind of synthetic method of maleimide modified p-tert-butylphenol formaldehyde resin, comprises the steps:

[0027] Step 1: Weigh 100g (0.67mol) of p-tert-butylphenol, 1g of 4-maleimidophenol, and 0.3g of concentrated sulfuric acid, and add them to a 500ml solution equipped with a mechanical stirrer, a thermometer, a reflux condenser and a dropping funnel. In a four-neck round bottom flask, heat up to 90°C, add dropwise 44g of formaldehyde aqueous solution (phenol-formaldehyde ratio 1:0.8), and continue to react for 1 hour;

[0028] Step 2: After the reaction, add 150g of toluene, extract the organic phase, add lye to adjust the reaction solution to neutral. Drain the waste water, and slowly raise the temperature to 110°C to evaporate the water in the system. Subsequently, the temperature will be raised slowly, and water and toluene will be distilled off;

[0029] Step 3: heat up to 160°C for polycondensation, keep it for 1 hour, and distill under reduced pressure t...

Embodiment 2

[0032] A kind of synthetic method of maleimide modified p-tert-butylphenol formaldehyde resin, comprises the steps:

[0033] Step 1: Weigh 100g (0.67mol) of p-tert-butylphenol, 3g of 4-maleimidophenol, 0.2g of concentrated sulfuric acid, and add to a 500ml solution equipped with a mechanical stirrer, thermometer, reflux condenser and dropping funnel In a four-necked round bottom flask, the temperature was raised to 100°C, and 49 g of formaldehyde aqueous solution (phenol-formaldehyde ratio 1:0.9) was added dropwise, and the reaction continued for 3 hours.

[0034] Step 2: After the reaction, add 150g of toluene, extract the organic phase, add lye to adjust the reaction solution to neutral. Drain the waste water, and slowly raise the temperature to 110°C to evaporate the water in the system. Subsequently, the temperature will be raised slowly, water and toluene are distilled off,

[0035] Step 3: heat up to 190°C for polycondensation and keep for 2 hours; distill under reduce...

Embodiment 3

[0038] Step 1: Weigh 100g (0.67mol) of p-tert-butylphenol, 2g of 4-maleimidophenol, and 0.3g of p-toluenesulfonic acid, and add a mixture equipped with a mechanical stirrer, a thermometer, a reflux condenser and a dropping funnel In a 500ml four-neck round bottom flask, the temperature was raised to 95°C, and 44g of formaldehyde aqueous solution (phenol-formaldehyde ratio 1:0.8) was added dropwise, and the reaction continued for 2 hours.

[0039] Step 2: After the reaction, add 150g of toluene, extract the organic phase, add lye to adjust the reaction solution to neutral. Drain the waste water, and slowly raise the temperature to 110°C to evaporate the water in the system. Subsequently, the temperature will be raised slowly, water and toluene are distilled off,

[0040] Step 3: Carry out polycondensation at 180° C. for 3 hours; distill under reduced pressure to distill out small molecular substances and unreacted monomers. After discharging, the maleimide modified p-tert-but...

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Abstract

The invention provides a maleimide modified p-tert-butyl phenol formaldehyde resin and a synthesis method thereof. The synthesis method comprises the following steps: step 1, adding p-tert-butyl phenol, 4-maleimide phenol, formaldehyde and a catalyst into a reaction container, and carrying out a condensation reaction at the temperature of 80-100 DEG C; step 2, adding methylbenzene to extract the organic phase, adding alkali liquor to adjust reaction liquid to be neutral, discharging the water phase, and evaporating out water and solvents in the system; and step 3, heating to 160-190 DEG C, carrying out a polycondensation reaction, and carrying out reduced pressure distillation to remove water and unreacted monomers to obtain the maleimide modified p-tert-butyl phenol formaldehyde resin. Some R groups in the p-tert-butyl phenol-formaldehyde resin are substituted by maleimide groups, and double bonds can react with double bonds in rubber, so that migration of the resin in the rubber is reduced, heat generation is reduced, and the ageing resistance of the rubber is improved. Carbonyl of a modifying group has strong hydrogen-bond interaction, so that the interaction force between molecules can be effectively improved, and the lasting viscosity is improved.

Description

technical field [0001] The invention relates to the technical field of tackifying resins, in particular to a maleimide-modified p-tert-butylphenol formaldehyde resin and a synthesis method thereof. Background technique [0002] In the tire production process, the lamination molding method is usually adopted, that is, the films of each part are made into unvulcanized rubber according to different performance requirements, and then laminating and molding; this process requires the unvulcanized rubber material to have a high molding viscosity. In order to improve the lack of adhesion between the various parts of the film, it is usually necessary to add a tackifier when mixing the rubber. [0003] At present, the widely used tackifying agent is common tackifying resin, that is, alkylphenol-formaldehyde resin. This type of resin has the advantages of simple process and low price, but after the tackifying resin is added to the rubber compound, the It is in a free state and will ...

Claims

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Application Information

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IPC IPC(8): C08G8/08
CPCC08G8/08
Inventor 马德龙李庆朝杜孟成黄存影孟祥克
Owner SHANDONG YANGGU HUATAI CHEM
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