Adhesion-promotion resin and preparation method thereof, and rubber prepared by same

A technology of tackifying resin and formaldehyde, which is applied in the field of preparing tackifying resin with modifiers and catalysts, can solve the problems of poor moisture resistance and high temperature resistance, poor adhesion, short retention period, etc., achieve strong water repellency, rapid response, Enhance the effect of interpenetration and diffusion

Inactive Publication Date: 2010-01-20
烟台首一化学制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing tackifying resin has poor adhesion, short retention period, poor moisture resistance and high temperature resistance, so the rubber prepared by using it has the disadvantages of easy breakage and poor strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Aldehyde pickling: After adding 650 parts of formaldehyde to the 1# reactor, under the condition of stirring, turn on the jacket cooling water, add 300 parts of concentrated sulfuric acid, and control the pickling temperature at 80°C;

[0031] (2) Reaction: After adding 430 parts of toluene to the 2# reactor, and then adding the aldehyde after the pickling of the 1# reactor to the 2# reactor, the temperature was raised to 150° C., and refluxed for a certain period of time;

[0032] (3) Separation: the reaction solution in the 2# reactor was left still for a certain period of time to isolate excess sulfuric acid, then washed with water until the reaction solution was neutral, then distilled excess toluene, and finally obtained the reaction solution containing resin;

[0033] (4) Modification treatment: Add 54 parts of p-tert-butylphenol to the reaction solution containing resin in 2# reactor, add 0.11 parts of p-toluenesulfonic acid as a catalyst to obtain a mixed sol...

Embodiment 2

[0035] (1) Aldehyde pickling: After adding 650 parts of formaldehyde to the 1# reactor, under the condition of stirring, turn on the jacket cooling water, add 300 parts of concentrated sulfuric acid, and control the pickling temperature at 80°C;

[0036] (2) Reaction: After adding 430 parts of toluene to the 2# reactor, and then adding the aldehyde after the pickling of the 1# reactor to the 2# reactor, the temperature was raised to 150° C., and refluxed for a certain period of time;

[0037] (3) Separation: the reaction solution in the 2# reactor was left still for a certain period of time to isolate excess sulfuric acid, then washed with water until the reaction solution was neutral, then distilled excess toluene, and finally obtained the reaction solution containing resin;

[0038] (4) Modification treatment: Add 150% phenol to the separated reaction solution in 2# reactor, add 0.15 parts of p-toluenesulfonic acid as a catalyst, heat up to 120°C for 30min, then heat up to 18...

Embodiment 3

[0040] (1) Aldehyde pickling: After adding 650 parts of formaldehyde to the 1# reactor, under the condition of stirring, turn on the jacket cooling water, add 300 parts of concentrated sulfuric acid, and control the pickling temperature at 80°C;

[0041] (2) Reaction: After adding 430 parts of toluene to the 2# reactor, and then adding the aldehyde after the pickling of the 1# reactor to the 2# reactor, the temperature was raised to 150° C., and refluxed for a certain period of time;

[0042] (3) Separation: the reaction solution in the 2# reactor was left still for a certain period of time to isolate excess sulfuric acid, then washed with water until the reaction solution was neutral, then distilled excess toluene, and finally obtained the reaction solution containing resin;

[0043] (4) Modification treatment: Add 500% phenol to the separated reaction solution in the 2# reactor, add 3 parts of p-toluenesulfonic acid as a catalyst, heat up to 120°C for 30min, then heat up to 1...

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Abstract

The invention relates to a method for adhesion-promotion resin by enabling aromatic compound to react with formaldehydes under the insistence of an acid catalyst, and a product thereof, in particular to a method for producing long-acting adhesion-promotion resin by using a modifying agent and a catalyst, a product, and application of the product. In the preparation method after steps of condensation reaction between the aromatic compound and the formaldehydes, separation of excessive acid, neutralization reaction, distillation of excessive formaldehydes, a step of modification treatment is added, namely, monohydric phenol and organic acid are added and respectively uses as the modifying agent and the catalyst to prepare the adhesion-promotion resin. The adhesion-promotion resin has the advantages of long storage period, humidity resistance, high temperature resistance and the like; and rubber prepared by the adhesion-promotion resin has high drag extension rate, high tear strength and the like.

Description

technical field [0001] The present invention relates to a method and the product obtained by reacting aromatic compounds and formaldehydes in the presence of an acid catalyst to prepare a tackifying resin, especially a method and a product for preparing a tackifying resin with a modifier and a catalyst, and the product of the above-mentioned product use. Background technique [0002] In the case of acid catalysis, it is known in the prior art that aromatic compounds and formaldehyde can be reacted to synthesize resinous low-molecular polymers, such as the content disclosed in Chinese patent CN1203928A using dilute sulfuric acid as a catalyst. In the rubber industry, low-molecular polymers are widely used as tackifiers. Commonly used tackifiers include alkylphenol-formaldehyde resins, coumarone-indene resins, polybutenes, and petroleum resins. However, the existing tackifying resin has the disadvantages of poor adhesion, short retention period, poor moisture resistance and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G14/04C08L21/00C08L61/34
Inventor 柳忠光
Owner 烟台首一化学制品有限公司
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