Allyl para-tert-butyl phenyl ether formaldehyde tackifying resin and preparation method thereof

A technology of tert-butyl phenyl ether and tackifying resin, which is applied in the field of chemical engineering, can solve problems such as the decline of adhesion performance, and achieve the effects of high self-adhesive strength, good rubber compatibility, and excellent long-term tackifying ability

Inactive Publication Date: 2012-03-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All kinds of tackifying resins can make the rubber compound have high initial viscosity, but the adhesive performance of the rubber compound will decrease rapidly after storage or under aeration, humid and hot conditions

Method used

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  • Allyl para-tert-butyl phenyl ether formaldehyde tackifying resin and preparation method thereof
  • Allyl para-tert-butyl phenyl ether formaldehyde tackifying resin and preparation method thereof
  • Allyl para-tert-butyl phenyl ether formaldehyde tackifying resin and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Mix p-tert-butylphenol and formaldehyde at a molar ratio of 1:1, raise the temperature to 90°C to dissolve it completely, add hydrochloric acid until the reaction boils for 3 hours, dissolve it with toluene, wash with hot water until neutral, and press the obtained resin Mix the resin and allyl chloride at a molar ratio of 5:1, dissolve in ethanol, then add 1M potassium hydroxide solution to adjust the pH to 10, heat for 30 minutes, extract with toluene, add 0.5M hydrochloric acid to wash, and let stand to separate. , the supernatant was washed with distilled water to pH 7, and allyl p-tert-butylphenyl ether formaldehyde resin was obtained after vacuum distillation, with a yield of 89% and a purity of 98.2%.

Embodiment 2

[0023] Mix p-tert-butylphenol and formaldehyde at a molar ratio of 1:1, heat up to 100°C to dissolve completely, add hydrochloric acid until the reaction boils for 4 hours, dissolve with toluene, wash with hot water until neutral, and press the obtained resin Mix the resin and allyl chloride at a molar ratio of 4:1, dissolve in ethanol, then add 1M potassium hydroxide solution to adjust the pH to 10, heat for 60 minutes, extract with toluene, add 0.5M hydrochloric acid to wash, and let stand to separate. , the supernatant was washed with distilled water to pH 7, and allyl p-tert-butylphenyl ether formaldehyde resin was obtained after vacuum distillation, with a yield of 91% and a purity of 98.5%.

Embodiment 3

[0025] Mix p-tert-butylphenol and formaldehyde at a molar ratio of 1:1, heat up to 120°C to dissolve it completely, add hydrochloric acid until the reaction boils for 4 hours, dissolve it with toluene, wash with hot water until neutral, and press the obtained resin Mix the resin and allyl chloride at a molar ratio of 2:1, dissolve in ethanol, then add 1M potassium hydroxide solution to adjust the pH to 10, heat for 60 minutes, extract with toluene, add 0.5M hydrochloric acid to wash, and let stand to separate. , the supernatant was washed with distilled water to pH 7, and allyl p-tert-butylphenyl ether formaldehyde resin was obtained after vacuum distillation, with a yield of 89.5% and a purity of 97.5%.

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Abstract

The invention discloses allyl para-tert-butyl phenyl ether formaldehyde tackifying resin and a preparation method thereof. The preparation method comprises the following steps: mixing para-tert-butyl phenol with formaldehyde at the molar ratio of 1:1, increasing the temperature to 80-120 DEG C, adding hydrochloric acid till the boiling of reaction lasts for 3-5 hours, using toluene to dissolve, washing with hot water till neutrality, mixing the obtained resin with allyl chloride at the molar ratio of (3-1):(0.5-2), using ethanol to dissolve, further adding potassium hydroxide to regulate the pH to 8-10, heating for 30-90 minutes, then using the toluene to extract, washing with distilled water till the neutrality, and performing reduced pressure distillation so as to get an allyl para-tert-butyl phenyl ether formaldehyde resin purified product. The product has higher self-adhesion strength and excellent long-acting tackifying capability.

Description

technical field [0001] The invention relates to the technical field of chemical engineering, in particular to a preparation method of allyl p-tert-butylphenyl ether formaldehyde tackifying resin. Background technique [0002] In the production of rubber products, especially radial tires and bias rubber tires, they are often formed by pasting, which requires unvulcanized rubber to have high molding adhesion. Natural rubber has good self-adhesiveness, so the process performance is good; although synthetic rubber has wear resistance, aging resistance and some special advantages, but because of the lack of sufficient self-adhesiveness, it brings difficulties to the molding process, thus limiting the synthetic rubber. use. [0003] If there is a lack of viscosity between the rubber materials, especially for synthetic rubber compounds, the semi-finished rubber parts will not only deform in size due to creep, but also cause the adhesive parts of the rubber parts to come off due to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/36C08G8/12C08L9/06C08L7/00C08L61/14
Inventor 陈朝晖李幸秦霞孙仙平
Owner SOUTH CHINA UNIV OF TECH
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