Synthesis and applications of long-acting tackifying phenol formaldehyde resin

A phenolic resin, long-acting technology, used in the field of rubber processing aids, can solve the problems of multiple waste water and organic waste liquid, reduce the density of phenolic hydroxyl groups, complex processes, etc., achieve long-term viscosity increase, reduce dynamic heat generation, phase Good capacitive effect

Active Publication Date: 2017-07-21
SINO LEGEND CHINA CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resin prepared by this method contains the ether bond formed between the phenolic hydroxyl group and the allyl chloride, which reduces the density of the phenolic hydroxyl group in the resin molecule. According to the research of C.S

Method used

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  • Synthesis and applications of long-acting tackifying phenol formaldehyde resin
  • Synthesis and applications of long-acting tackifying phenol formaldehyde resin
  • Synthesis and applications of long-acting tackifying phenol formaldehyde resin

Examples

Experimental program
Comparison scheme
Effect test

Example

[0032] Comparative example 1~2

[0033] Put a certain amount of p-tert-butylphenol or p-tert-octylphenol into a 500ml four-necked reaction flask that can be equipped with stirring, thermometer, reflux condenser and addition funnel (see Table 1 for specific dosage), and melt at 90℃ , Add 0.5g of p-toluenesulfonic acid and stir evenly, drop an appropriate amount of 37% liquid aldehyde (see Table 1 for specific dosage) into the four-neck flask, after the addition is completed, heat to 100°C and reflux for 2 hours. Switch reflux to distillation, add 0.11g solid sodium hydroxide, a small amount of defoamer, heat up to 180℃, dehydration at normal pressure, wait until the temperature rises to 180℃, vacuum distillation (-90~-95Kpa) to remove residual water, wait After no distillate flows out, the vacuum is broken, the resin melt is discharged into a stainless steel pan, and the resin melt is cooled to room temperature to obtain the alkyl phenolic resin of Comparative Example 1, 2.

[0034...

Example

[0038] Examples 1~4

[0039] Into a 500ml four-necked reaction flask that can be equipped with a stirrer, thermometer, reflux condenser and addition funnel, put alkylphenol and 2-allylphenol (see Table 2 for specific materials and dosage), heat to 90°C to melt, and add 2g of oxalic acid, after stirring evenly, add an appropriate amount of formaldehyde (see Table 2 for specific dosage) into the four-necked flask, after the addition is completed, heat up to 100°C and reflux for 1 to 5 hours. Switch reflux to distillation, add a small amount of defoamer, heat up to 180°C, dehydrate at normal pressure, wait until the temperature rises to 180°C, and remove residual water by vacuum distillation (-90~-95Kpa). When no distillate flows out, break the vacuum , The resin melt is discharged into a stainless steel pan and cooled to room temperature to obtain the long-lasting tackifying resin of the present invention.

[0040] Table 2 The raw material formulations and resin softening points of ...

Example Embodiment

[0042] Example 5

[0043] Put 150g p-tert-butylphenol and 25g 2-allylphenol into a 500ml four-necked reaction flask that can be equipped with a stirrer, thermometer, reflux condenser and addition funnel. Heat to 90℃ to melt, add 2g triethanolamine and stir. After uniformity, 95 g of 37% liquid aldehyde was added to the four-neck flask. After the addition, the temperature was raised to 100° C. and refluxed for 2 hours. Switch reflux to distillation, a small amount of defoamer, heat up to 180°C, dehydration at normal pressure, after the temperature rises to 180°C, vacuum distillation (-90~-95Kpa) to remove residual water, when no distillate flows out, break the vacuum, After curing for 2 hours at 180°C, the resin melt is discharged into a stainless steel pan and cooled to room temperature to obtain the long-lasting tackifying resin of the present invention, with a softening point of 129°C and an iodine value of 20.6.

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Abstract

The present invention relates to a long-acting tackifying phenol formaldehyde resin and applications of the long-acting tackifying phenol formaldehyde resin in rubbers, wherein the long-acting tackifying phenol formaldehyde resin is prepared by carrying out a co-condensation reaction on a phenol compound containing a carbon-carbon double bond, an alkylphenol compound and an aldehyde compound. According to the present invention, the long-acting tackifying phenol formaldehyde resin contains the unsaturated double bond structure, such that the long-acting tackifying phenol formaldehyde resin can provide good initial self-adhesion and long-acting tackifying for rubbers when the long-acting tackifying phenol formaldehyde resin is adopted as the rubber tackifier, and the dynamical heat generation of the rubber can be reduced; and the long-acting tackifying phenol formaldehyde resin is particularly suitable for the manufacture and production of tires.

Description

technical field [0001] The invention relates to the field of rubber processing aids, in particular to a long-acting tackifying resin and its application in rubber. Background technique [0002] In the production of rubber products, especially tires, they are often molded by lamination, which requires the unvulcanized rubber to have high molding adhesion. Natural rubber has good self-adhesiveness and good process performance; synthetic rubber has wear resistance, aging resistance and some special advantages, but because of its lack of sufficient self-adhesiveness, it brings difficulties to the molding process. In order to improve the lack of adhesion between rubber parts, tackifiers are usually added to the rubber. Natural rubber itself has high self-adhesive ability, so general hydrocarbon resins, such as rosin, polyterpene and petroleum resin, can provide sufficient structural adhesion. Due to the poor self-adhesive ability of synthetic rubber, general hydrocarbon resins ...

Claims

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Application Information

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IPC IPC(8): C08G8/08C08G8/12C08L9/00C08L7/00C08L61/08C08K13/02C08K3/22C08K3/04
CPCC08G8/08C08G8/12C08L9/00C08L2205/03C08L7/00C08L61/06C08K13/02C08K2003/2296C08K3/04
Inventor 王万兴赵燕超侯远杨黄进
Owner SINO LEGEND CHINA CHEM
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