Alkyl phenolic resin rubber tackifier and preparation method

A technology of alkyl phenolic resin and tackifier, which is used in adhesives, aldehyde/ketone condensation polymer adhesives, adhesive types, etc. There is no significant increase in the resultant force, and the effect of good lasting viscosity, improved adhesion, and prevention of bead voiding and blasting can be achieved.

Active Publication Date: 2013-07-03
JIANGSU GUOLI CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] Although the prior art has many improvements to the alkylphenol-formaldehyde resin rubber tackifier, and the initial viscosity and continuous viscosity of the rubber material are improved to a certain extent, there are certain unsatisfactory situations in these improvements, mainly due to the comprehensive The performance is still not ideal, especially the adhesion between the rubber material and the steel cord is not significantly improved

Method used

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  • Alkyl phenolic resin rubber tackifier and preparation method
  • Alkyl phenolic resin rubber tackifier and preparation method
  • Alkyl phenolic resin rubber tackifier and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 82.4g (0.4mol) of p-tert-octylphenol and 100g methanol to a 500ml reaction flask, stir and slowly heat up to 65°C, respectively, through a dropping funnel and a screw feeder, and uniformly dropwise add 15% hydrogen peroxide 106.7 g (0.4 mol) of sodium methanol solution and 86.2 g (0.4 mol) of 2-chloromethylthiobenzothiazole were added, and the pH value was kept in the range of 9-11, and the addition time was about 120 minutes. Continue to stir and keep warm for 60 minutes after the addition is complete. Then the temperature was raised and methanol was distilled off. When the distillation temperature reached 110°C, it was kept for half an hour. Then it is lowered to room temperature, washed with water, filtered and dried, and it is the etherate monomer A of the present invention.

Embodiment 2

[0027] Into a 1000 ml reaction flask, 82.4 g (0.4 mol) of p-tert-octylphenol, 38.5 g (0.1 mol) of etherified monomer A, 40 ml of toluene, and 1 g of 36% hydrochloric acid were added. Turn on the condensed water in the reflux pipe, stir and heat up, and the reflux phenomenon occurs when the material rises to about 85 °C. Keeping the reflux state and continuous stirring, 34 g (0.42 mol) of 37% formaldehyde aqueous solution was added dropwise from the addition funnel, and the dropwise addition time was about 30 minutes. After the dropwise addition of formaldehyde, continue stirring and refluxing for 180 minutes, and then neutralize the material to neutrality with 20% aqueous sodium hydroxide solution. 90 ml of toluene was added, stirred for 20 minutes, left to stand for layers, and the aqueous phase was separated. Then 100 ml of water was added, the temperature was kept at 70° C. and stirred for 20 minutes. Continue to stir and heat up to steam out toluene and residual moisture...

Embodiment 3

[0029] Into a 1000 ml reaction flask, 72.1 g (0.35 mol) of p-tert-octylphenol, 57.8 g (0.15 mol) of etherified monomer A, 40 ml of toluene, and 1 g of 36% hydrochloric acid were added. Turn on the reflux condensed water, stir to heat up, and the reflux phenomenon occurs when the material rises to about 85 °C. Keeping reflux and stirring, 34 g (0.42 mol) of a 37% aqueous formaldehyde solution was added dropwise from the addition funnel for about 30 minutes. After the dropwise addition of formaldehyde, the mixture was continuously stirred and refluxed for 180 minutes, and then neutralized to neutrality with 20% aqueous sodium hydroxide solution. 90 ml of toluene was added, stirred for 20 minutes, left to stand for layers, and the aqueous phase was separated. Then 100 ml of water was added, the temperature was kept at 70° C., stirred for 20 minutes, left to stand for stratification, and the water phase was separated out again. Continue to stir and heat up to steam out toluene a...

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Abstract

An alkyl phenolic resin rubber tackifier of the invention has a molecular structure containing benzoxazole heterocyclic groups, and the benzoxazole heterocyclic groups are bonded into the molecules by forming ether bonds through etherification reactions between benzoxazole heterocyclic compounds with monoetherification reaction functional groups and alkylphenol. The tackifier can provide good viscosity for unvulcanized rubber materials. In addition, the alkyl phenolic resin rubber tackifier of the invention can also significantly improve the adhesive force between rubber materials and steel cord materials.

Description

technical field [0001] The invention belongs to the technical field of rubber tackifiers, and relates to an alkyl phenolic resin rubber tackifier and a preparation method thereof. Background technique [0002] In order to make rubber products with excellent performance, the unvulcanized rubber material must have enough viscosity to facilitate the production and storage in the process. [0003] The tack mentioned here refers to the self-adhesion ability of the unvulcanized rubber material or the adhesion ability between the unvulcanized rubber material and other materials that need to be adhered. This stickiness plays an important role in the process of making rubber products. [0004] In the production process of radial tires, the rubber raw materials and compounding agents are uniformly mixed before vulcanization, and then a film is formed and covered with steel cords, and then vulcanized and molded. Therefore, the rubber material needs good viscosity to satisfy the mutua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/36C08L61/14C08L21/00C09J161/14B60C1/00
Inventor 陈光炎胡立新郎旭东尤志东
Owner JIANGSU GUOLI CHEM TECH
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