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Modified resorcinol formaldehyde resin adhesion promoter and preparation method thereof

A technology of resorcinol formaldehyde resin and adhesion promoter, applied in the application of rubber composition, the field of preparation of resorcinol formaldehyde resin adhesion promoter, can solve the problem of high energy consumption, long time, Long response cycle and other issues, to achieve the effect of energy saving and emission reduction production, green production, and improve production efficiency

Active Publication Date: 2015-11-25
JIANGSU QIXIANG HIGH NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This new type of material can be used for various applications such as adhesives or coatings that improve their performance over existing materials while also being environmentally friendly due to its improved manufacturing process with reduced waste generation during production.

Problems solved by technology

The technical problem addressed in this patents relates to finding ways to reduce unwanted chemical reactions called residual unsaturated bonds (RBS) within rubbers without compromising their quality and functionality. Existing solutions such as modifying agents like sulfur acids or amines result in poor soluble behavior when combined together making up the rubbish after curing. Additionally, existing techniques involve complicated steps involving multiple components, causing environmental concerns from waste disposals.

Method used

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  • Modified resorcinol formaldehyde resin adhesion promoter and preparation method thereof
  • Modified resorcinol formaldehyde resin adhesion promoter and preparation method thereof
  • Modified resorcinol formaldehyde resin adhesion promoter and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Put 100g of resorcinol formaldehyde resin in a 500ml reaction kettle equipped with a mechanical stirrer, a thermometer, a reflux condenser and a dropping funnel, heat and melt it into a liquid; add 0.2g of p-toluenesulfonic acid and mix well;

[0038] (2) Raise the temperature of the reactor to 140°C, and add 2 g of ferulic acid dropwise to the above mixed solution for 20-30 minutes, and continue to react the materials in the reactor for 1 hour with constant stirring;

[0039] (3) Slowly add 3 g of formaldehyde solution with a mass percentage concentration of 37% dropwise under stirring, and react for 0.5 hours;

[0040] (4) Add NaOH with a mass percentage concentration of 10% to the above mixed solution to neutralize the acidic catalyst, so that the Ph is about 7;

[0041] (5) Atmospheric pressure distillation, vacuum dehydration, devolatilization, and then pour out the viscous liquid in the reaction kettle to obtain a resorcinol-formaldehyde resin adhesion promote...

Embodiment 2

[0043] (1) Put 100g of resorcinol formaldehyde resin in a 500ml reaction kettle equipped with a mechanical stirrer, a thermometer, a reflux condenser and a dropping funnel, heat and melt it into a liquid; add 0.3g of dimethylbenzenesulfonic acid and mix Uniform;

[0044] (2) Raise the temperature of the reactor to 140°C, and add 5 g of ferulic acid dropwise to the above mixed solution for 20-30 minutes, and continue to react in the reactor for 1.5 hours with constant stirring;

[0045] (3) Slowly add 3 g of formaldehyde solution with a mass percentage concentration of 37% dropwise under stirring, and react for 0.5 hours;

[0046] (4) Add NaOH with a mass percentage concentration of 10% to the above mixed solution to neutralize the acidic catalyst, so that the Ph is about 7;

[0047] (5) Atmospheric pressure distillation, vacuum dehydration, devolatilization, and then pour out the viscous liquid in the reaction kettle to obtain a resorcinol-formaldehyde resin adhesion promoter...

Embodiment 3

[0049] (1) Put 100g of resorcinol formaldehyde resin in a 500ml reaction kettle equipped with a mechanical stirrer, a thermometer, a reflux condenser and a dropping funnel, heat and melt it into a liquid; add 0.5g of hydrochloric acid and mix well;

[0050](2) Raise the temperature of the reactor to 140°C, and add 7 g of vanillic acid dropwise to the above mixture for 20-30 minutes, and continue to react in the reactor for 2 hours with constant stirring;

[0051] (3) Slowly add 4 g of formaldehyde solution with a mass percentage concentration of 37% dropwise under stirring, and react for 0.5 hours;

[0052] (4) Add NaOH with a mass percentage concentration of 10% to the above mixed solution to neutralize the acidic catalyst, so that the Ph is about 7;

[0053] (5) Atmospheric distillation, vacuum dehydration and removal of other substances, and then pour out the viscous liquid in the reaction kettle to obtain a resorcinol-formaldehyde resin adhesion promoter.

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Abstract

The invention discloses phenolic acid modified resorcinol formaldehyde resin adhesion promoter and a preparation method thereof. Resorcinol formaldehyde resin and acid catalyst are added to a reaction still and are stirred and heated to be molten into liquid, and modifier is slowly added dropwise; after a reaction is conducted in the reaction still for 1-2 hours, formalin continues to be slowly added dropwise, and a reaction is conducted for 0.5-1.5 hours; atmospheric distillation is conducted, and after water and other volatile substances are removed in a vacuumizing mode, the phenolic acid modified adhesion promoter is obtained. According to the modified adhesion promoter, while the process is improved, a stereoscopic cross-linked network structure is enhanced through a plurality of functional groups of phenolic acids, the content of free resorcinol is reduced, and the strength, bonding performance and ageing resisting performance of resin are improved. According to the preparation method, production efficiency is improved, and environment friendliness, energy saving, emission reduction and green production are achieved.

Description

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Claims

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Application Information

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Owner JIANGSU QIXIANG HIGH NEW MATERIAL
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