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Synthetic method of novel tackifying resin

A technology of tackifying resin and synthesis method, which is applied in the field of synthesis of new tackifying resin, can solve the problems of damp heat resistance, poor washing resistance, unsatisfactory effect, etc., and achieve good water resistance, good economic benefits and market prospects.

Inactive Publication Date: 2013-05-15
于文明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the various tackifying resins mentioned above, the tackifying effect of various alkylphenol-formaldehyde resins is the most significant, but since the alkylphenol-formaldehyde resins all have phenolic hydroxyl groups, the resistance to heat and humidity and washing resistance of this type of resin is poor. The effect is not ideal in the application of rubber, paint, adhesive and other industries. Now there is an urgent need for a new type of resin with good water resistance and tear resistance to meet the needs of the industry.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] (1) Mix tert-butylphenol, abietic acid, toluene, and sulfuric acid in proportions by weight of tert-butylphenol:abietic acid:toluene:sulfuric acid at 25:30:90:0.5, heat up to 130°C for reflux dehydration reaction for 4 hours ;

[0013] (2) After dehydration, slowly add 37% formaldehyde solution, heat to 90°C and reflux for 3.5 hours;

[0014] (3) Add 30% NaOH solution for neutralization, after washing with water, evaporate the volatile matter under the condition of negative pressure 0.05~0.08mpa, kettle temperature 200~210℃, take a sample after 30-35 minutes and measure the softening point when it reaches 125℃, put material, that is, a new type of tackifying resin.

[0015] Wherein above-mentioned steps add tert-butylphenol, abietic acid, toluene, sulfuric acid, formaldehyde solution by weight ratio tert-butylphenol:abietic acid:toluene:sulfuric acid:formaldehyde solution is 25:30:90:0.5:15.

Embodiment 2

[0017] (1) Mix tert-butylphenol, abietic acid, toluene, and sulfuric acid in proportions by weight of tert-butylphenol:abietic acid:toluene:sulfuric acid at 40:60:100:5, heat up to 160°C for reflux dehydration reaction for 5 hours ;

[0018] (2) After dehydration, slowly add 37% formaldehyde solution, heat to 90~110°C and reflux for 4 hours;

[0019] (3) Add 30% NaOH solution for neutralization, after washing with water, evaporate the volatile matter under the condition of negative pressure 0.05-0.08mpa, kettle temperature 200-210℃, take a sample after 30-35 minutes and measure the softening point when it reaches 155℃, put material, that is, a new type of tackifying resin.

[0020] Wherein in the above-mentioned step, add tert-butylphenol, abietic acid, toluene, sulfuric acid, formaldehyde solution by weight ratio tert-butylphenol: abietic acid: toluene: sulfuric acid: formaldehyde solution is 40: 60: 100: 5: 40.

Embodiment 3

[0022] (1) Mix tert-butylphenol, abietic acid, toluene, and sulfuric acid in proportions by weight of tert-butylphenol:abietic acid:toluene:sulfuric acid at 30:30:100:0.6, heat up to 140°C for reflux dehydration reaction for 4 hours , the dehydration rate reaches 77.8%;

[0023] (2) After dehydration, slowly add 37% formaldehyde solution, heat to 95°C and reflux for 3.5 hours;

[0024] (3) Add 30% NaOH solution for neutralization, after washing with water, evaporate the volatile matter under the conditions of negative pressure 0.05-0.08mpa, kettle temperature 200-210°C, take a sample after 30-35 minutes and measure the softening point when it reaches 140°C, put material, that is, a new type of tackifying resin.

[0025] Wherein above-mentioned steps add tert-butylphenol, abietic acid, toluene, sulfuric acid, formaldehyde solution in proportion by weight tert-butylphenol:abietic acid:toluene:sulfuric acid:formaldehyde solution is 30:30:100:0.6:20.

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PUM

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Abstract

The invention relates to a synthetic method of a novel tackifying resin. By adopting the synthetic method, phenolic hydroxyl is partially or completely removed; and a new substituent group with larger steric effect is led in, so as to synthesize the novel tackifying resin with a brand-new structure. The resin has better water-resisting property than p-tert-Butylphenol formaldehyde resin, octyl phenolic resin, modified alkyl phenolic resin, tertiary phenol acetylene resin, rosin modified phenolic resin, petroleum resin, terpene resin and the like, can prevent tearing, and can be widely applied to the industries such as plastic, paint, and adhesive, and has better economic benefit and market prospect.

Description

technical field [0001] The invention relates to the technical field of synthesis of chemical raw materials, in particular to a synthesis method of a novel tackifying resin. Background technique [0002] At present, tackifiers widely used in rubber, paint, adhesives and other industries, such as: p-tert-butylphenol-formaldehyde resin, p-tert-octylphenol-formaldehyde resin, modified alkylphenol-formaldehyde resin, tert-phenol acetylene resin, rosin modified Phenolic resins, petroleum resins, terpene resins, etc., all use the steric hindrance effect of the aromatic ring or modified aromatic ring group on the molecular chain of the tackifying resin to achieve its tackifying performance. Among the various tackifying resins mentioned above, the tackifying effect of various alkylphenol-formaldehyde resins is the most significant, but since the alkylphenol-formaldehyde resins all have phenolic hydroxyl groups, the resistance to heat and humidity and washing resistance of this type o...

Claims

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Application Information

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IPC IPC(8): C08G8/34C08G8/08
Inventor 于冰于文明王明彦
Owner 于文明
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