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Modified phenolic tackifying resins for rubber compounding applications

A tackifying resin, resole phenolic resin technology, used in other rubber adhesives, adhesives, adhesive types, etc., to solve problems such as high cost and availability

Active Publication Date: 2011-07-20
SINO LEGEND CHINA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Very expensive and its availability is limited

Method used

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  • Modified phenolic tackifying resins for rubber compounding applications
  • Modified phenolic tackifying resins for rubber compounding applications
  • Modified phenolic tackifying resins for rubber compounding applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Rosin and morpholine modified p-tert-butylphenol (PTBP)-formaldehyde resin

[0056] 50 kg of p-tert-butylphenol (PTBP) and 25 kg of toluene were added to the reactor and heated to 85 to 110° C. to dissolve the phenol. Triethylamine (TEA) catalyst was then added to adjust the pH of the reaction mixture to basic conditions. Then, under reflux conditions, 32 kg of aqueous formaldehyde (37%) was slowly added over a period of about 2-3 hours. Morpholine (5 kg) and rosin (5 kg) were added to the resole mixture and refluxed for an additional 2-3 hours. Finally, the reaction mixture is first dehydrated at atmospheric pressure, and then the volatile substances present in the resin product are removed under vacuum (temperature 180-200° C. and vacuum 25-50 mm Hg).

Embodiment 2

[0058] Rosin, stearic acid and morpholine modified p-tert-butylphenol (PTBP)-formaldehyde resin

[0059] 150 kg of p-tert-butylphenol (PTBP) and 75 kg of toluene were added to the reactor and heated to 85 to 110° C. to dissolve the phenol. Triethylamine (TEA) catalyst was then added to adjust the pH of the reaction mixture to basic conditions. Then, under reflux conditions, 95 kg of aqueous formaldehyde (37%) was slowly added over a period of about 2-3 hours. Morpholine (14 kg), rosin (15 kg) and stearic acid (6 kg) were added to the resole mixture and refluxed for an additional 2-3 hours. Finally, the reaction mixture is first dehydrated at atmospheric pressure, and then the volatile substances present in the resin product are removed under vacuum (temperature 180-200° C. and vacuum 25-50 mm Hg).

Embodiment 3

[0061] Rosin, stearic acid and morpholine modified p-tert-octylphenol (PTOP)-formaldehyde resin

[0062] 225 grams of p-tert-octylphenol (PTOP) and 150 grams of toluene were added to the reaction flask and heated to 85 to 110° C. to dissolve the phenol. Triethylamine (TEA) catalyst was then added to adjust the pH of the reaction mixture to basic conditions. Then, under reflux conditions, 104 kg of aqueous formaldehyde (37%) was slowly added over a period of about 2-3 hours. Morpholine (15 grams), rosin (16 grams) and stearic acid (6 grams) were added to the resole mixture and refluxed for an additional 2-3 hours. Finally, the reaction mixture is first dehydrated at atmospheric pressure, and then the volatile substances present in the resin product are removed under vacuum (temperature 180-200° C. and vacuum 25-50 mm Hg).

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PUM

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Abstract

This invention is related to modified alkylphenol aldehyde resins and a method for preparing them from the reactions of alkylphenols, aldehydes, amines, rosins and fatty acids. When used in rubber compounds, these modified alkylphenol aldehyde resins provide much improved tack properties.

Description

field of invention [0001] The present invention relates to modified alkylphenolic resins and a process for their preparation from the reaction of alkylphenols, aldehydes, amines, rosins and fatty acids. When used in rubber compounds, the tack of these modified alkylphenolic resins is greatly improved. Background of the invention [0002] Modern radial and diagonal / striped passenger car tires are designed with good crack resistance and wear resistance, low hysteresis, low rolling resistance and good gas mileage and long service life. To this end, the tire industry employs blends of styrene-butadiene (SBR) and butadiene (BR) rubbers in rubber formulations, particularly tread cap and undertread compounds. In general, natural rubber is inherently tacky enough for most applications that tackifiers are not required. Styrene-butadiene (SBR) is less polar than other synthetic rubbers; unlike natural rubber, SBR does not produce surface peroxidal activity after mastication. Theref...

Claims

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Application Information

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IPC IPC(8): C08L21/00C08L61/14C08G8/32C08G8/34C09J121/00B60C1/00C08G8/28
CPCC08L21/00C08L7/00C08L9/00C08L93/04C08L61/14B60C1/00
Inventor 杨全海蒲启君
Owner SINO LEGEND CHINA CHEM
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