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A kind of preparation method of modified alkylphenol formaldehyde tackifying resin and rubber composition thereof

A technology of rubber composition and alkyl phenolic resin, applied in the field of phenolic resin, can solve the problems of difficult production, complicated process, unfavorable environmental protection and the like

Active Publication Date: 2021-07-06
SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] BASF's Koresin resin is an alkylphenol-acetylene resin. Although it has excellent synergistic effects such as long-term effect and heat and humidity resistance, the disadvantages of this resin are: difficult production, complicated process, high equipment requirements, high price, and raw materials used for production. Acetylene has great safety hazards, etc.
Although the tackifying resin prepared by this method has excellent long-term tackifying ability and has excellent long-lasting tackifying effect under harsh conditions such as high temperature and high humidity, this kind of resin uses acetylene gas as raw material, and its production requires high temperature and high pressure. reaction, not only the operation is difficult, the risk factor is high, and it is not conducive to environmental protection

Method used

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  • A kind of preparation method of modified alkylphenol formaldehyde tackifying resin and rubber composition thereof
  • A kind of preparation method of modified alkylphenol formaldehyde tackifying resin and rubber composition thereof
  • A kind of preparation method of modified alkylphenol formaldehyde tackifying resin and rubber composition thereof

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preparation example Construction

[0033] The preparation method of the present invention also includes: heating and dehydrating the obtained modified alkylphenolic resin, usually the temperature needs to be raised to above 170°C, purifying the modified alkylphenolic resin, and vacuuming, for example, to -0.09MP, and keep the vacuum constant for more than 0.5h, when the temperature of the reaction mixture rises above 180°C, the purification is completed when the free phenol is less than 2%.

[0034] According to the present invention, after the above purification is completed, it may also include: pouring the obtained modified alkylphenolic resin into a cooling pan while hot, and cooling to obtain a yellow transparent block-shaped modified alkylphenolic resin.

[0035] The modified alkylphenolic tackifying resins prepared according to the present invention can be used in a wide variety of applications. The modified resins are useful as, for example, binders, dispersants, surfactants, emulsifiers, elastomers, co...

preparation example 1

[0041] (1) 500g of nonylphenol, 120g of formaldehyde solution with a mass concentration of 50%, and 1g of oxalic acid with a mass fraction of more than 98% are added to a 2000mL four-necked flask to carry out phenolic polycondensation reaction. The four-necked flask is equipped with an electric stirrer Injector, thermometer and constant pressure dropping funnel, start the agitator, and start heating, raise the temperature of the reaction mixture to 100°C within 30 minutes, keep the system boiling, reflux at a constant temperature of 100°C, and react for 3 hours to obtain a thermoplastic alkylphenol-formaldehyde resin;

[0042] (2) 50g 2-ethylanthraquinone is added in the thermoplastic phenolic resin that step (1) obtains, continue constant temperature reflux reaction 2h, obtain modified alkylphenolic resin;

[0043] (3) The obtained modified alkylphenolic resin is dehydrated by heating, when the temperature rises to 170°C, the modified alkylphenolic resin is purified, vacuumed ...

preparation example 2

[0046] (1) 500g p-teroctylphenol, 110g mass concentration of 50% formaldehyde solution and 1g mass fraction of more than 98% dodecylbenzenesulfonic acid are added to a 2000mL four-necked flask to carry out phenolic polycondensation reaction , the four-neck flask is equipped with an electric stirrer, a thermometer and a constant pressure dropping funnel. Start the stirrer and start heating. Within 30 minutes, the reaction mixture is heated to 100°C. Keep the system boiling and reflux at a constant temperature of 100°C. After 3 hours of reaction Obtain thermoplastic alkylphenol-formaldehyde resin;

[0047] (2) Dehydrate the thermoplastic alkylphenolic resin obtained in step (1). When the temperature rises to 150°C, add 50g of 2,3,4,6-tetramethyl-d-glucose, and continue to keep the temperature at about 150°C Reflux reaction 2h, obtains modified alkyl phenolic resin;

[0048] (3) The obtained modified alkylphenolic resin is dehydrated by heating, when the temperature rises to 170...

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Abstract

The invention relates to a modified alkylphenol formaldehyde tackifying resin prepared by reacting an alkylphenol formaldehyde resin with a modifier in the presence of an acid catalyst; the invention also relates to a rubber composition comprising rubber or rubber mixture and the modified alkylphenolic tackifying resin. The modified alkylphenol formaldehyde tackifying resin provided by the invention can not only improve the tackifying effect of the rubber compound under high temperature and high humidity conditions, but also adopt non-dangerous solvents such as acetylene for modification, and the preparation process is safe; no solvent is used in the process, The operation is simpler; the added modifier does not produce additional liquid or gas waste, which is more environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of phenolic resins, in particular to a preparation method of a modified alkylphenolic tackifying resin and a rubber composition thereof. Background technique [0002] Viscosity is the basic chemical property of the material surface, especially in the tire industry, the surface of unvulcanized rubber must have a certain degree of viscosity and initial adhesion, so that the various parts of the tire can be glued together until it is formed. If the rubber material lacks adhesion, especially the synthetic rubber material, not only the size of the semi-finished rubber part is easily deformed, but also the adhesive part of the rubber part will crack due to the expansion during molding. [0003] Among all kinds of tackifiers, synthetic tackifiers have higher tackifying performance than natural tackifiers. Among synthetic tackifiers, non-heat-reactive alkylphenol formaldehyde resins have better initial tackifying pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/28C08G8/30C08L9/00C08L61/14
CPCC08G8/28C08G8/30C08L9/00C08L61/14
Inventor 李枝芳陈英军李圣哲
Owner SHANDONG SHENGQUAN NEW MATERIALS CO LTD
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