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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.MARVEL et al., this may cause long-term viscosity increase of the resin Adverse effects, at the same time, this method needs to be washed many times, the process is complicated, and more waste water and organic waste liquid are produced

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

Embodiment 1～4

[0039] Into the 500ml four-neck reaction flask that can be installed with stirring, thermometer, reflux condenser and adding funnel, drop alkylphenol and 2-allylphenol (see Table 2 for specific materials and consumption), heat up to 90°C and melt, add 2g of oxalic acid, after stirring evenly, add an appropriate amount of formaldehyde (see Table 2 for the specific dosage) into the four-necked bottle, after the dropwise addition, raise the temperature to 100°C, and reflux for 1 to 5 hours. Switch reflux to distillation, add a small amount of defoamer, raise the temperature to 180°C, and dehydrate under normal pressure. When the temperature rises to 180°C, distill under reduced pressure (-90~-95Kpa) to remove residual water. After no fraction flows out, break the vacuum , discharge the resin melt into a stainless steel pan, and cool to room temperature to obtain the long-acting tackifying resin of the present invention.

[0040] Table 2 Embodiment 1~4 raw material formula and res...

Embodiment 5

[0043] Put 150g of p-tert-butylphenol and 25g of 2-allylphenol into a 500ml four-neck reaction flask equipped with stirring, thermometer, reflux condenser and addition funnel, heat up to 90°C and melt, add 2g of triethanolamine, stir After uniformity, 95 g of 37% liquid aldehyde was added into the four-neck flask. After the addition was complete, the temperature was raised to 100° C. and refluxed for 2 hours. Switch reflux to distillation, raise the temperature to 180°C with a small amount of defoamer, and dehydrate under normal pressure. When the temperature rises to 180°C, distill under reduced pressure (-90~-95Kpa) to remove residual water. After no fraction flows out, break the vacuum. After aging at 180°C for 2 hours, the resin melt was discharged into a stainless steel pan and cooled to room temperature to obtain the long-acting tackifying resin of the present invention, with a softening point of 129°C and an iodine value of 20.6.

Embodiment 6

[0045] Put 150g of p-tert-butylphenol and 40g of 2,2'-diallyl bisphenol A into a 500ml four-neck reaction flask equipped with stirring, thermometer, reflux condenser and addition funnel, and heat up to 90°C to melt. Add 2g of triethylamine, stir evenly, add 92g of 37% liquid aldehyde into the four-neck flask, after the addition is complete, heat up to 100°C, add 9g of morpholine, and reflux for 2 hours. Switch reflux to distillation, heat up to 180°C with a small amount of defoamer, and dehydrate under normal pressure. When the temperature rises to 180°C, add 10g of stearic acid, stir well, and then distill under reduced pressure (-90~-95Kpa) to remove residual water. After no distillate flows out, break the vacuum, and after aging for 2 hours at 180°C, discharge the resin melt into a stainless steel pan, cool to room temperature to obtain the long-acting tackifying resin of the present invention, the softening point is 120°C, and the iodine value is 50.1.

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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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