Cashew oil modified alkyl phenol-phenol formaldehyde tackifying resin, preparation method and application thereof

A technology of tackifying resin and cashew nut oil, applied in the field of rubber industry, can solve the problems of increasing the dynamic mechanical loss of rubber and increasing the friction effect of rubber molecular segments, so as to reduce dynamic heat generation, improve self-adhesion, and increase compatibility. sexual effect

Active Publication Date: 2014-07-16
SINO LEGEND CHINA CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The phenolic tackifying resin with benzene ring structure will increase the internal friction of rubber molecular segments and improve the dynamic mechanical loss of rubber

Method used

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  • Cashew oil modified alkyl phenol-phenol formaldehyde tackifying resin, preparation method and application thereof
  • Cashew oil modified alkyl phenol-phenol formaldehyde tackifying resin, preparation method and application thereof
  • Cashew oil modified alkyl phenol-phenol formaldehyde tackifying resin, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] On the 1000ml four-neck reaction flask, install stirring, thermometer, reflux condenser and addition funnel. Drop into p-tert-butylphenol 180g, cashew nut oil 240g, 37% formaldehyde aqueous solution 215g, triethylamine catalyst 5g. The temperature was raised to 100°C. The reaction was refluxed for 2 hours. Normal pressure dehydration. The temperature was raised to 190°C and kept at this temperature for 2 hours, then drained into a stainless steel pan and cooled to room temperature. The obtained resin of the present invention has a softening point of 120°C and is dark red.

Embodiment 2

[0044] On the 1000ml four-neck reaction flask, install stirring, thermometer, reflux condenser and addition funnel. Add 285 g of p-tert-butylphenol, 30 g of cashew nut oil, 195 g of 37% formaldehyde solution, and 4 g of triethylamine catalyst. Raise the temperature to 80°C and react for 5 hours. Normal pressure dehydration. The temperature was raised to 190°C and kept at this temperature for 2 hours, then drained into a stainless steel pan and cooled to room temperature. Obtain the resin of the present invention, the product is transparent, softening point 128 ℃, dark red.

Embodiment 3

[0046] On the 1000ml four-neck reaction flask, install stirring, thermometer, reflux condenser and addition funnel. Drop into p-tert-butylphenol 240g, cashew nut oil 120g, p-toluenesulfonic acid catalyst 3g. Heat up to 100°C to melt, add 200 g of 37% formaldehyde solution dropwise, complete the dropwise addition within 30 minutes, and reflux for 2 hours. Normal pressure dehydration. When the temperature rises to 180°C, add 3.2g of sodium hydroxide 20% aqueous solution to neutralize. The temperature was raised to 190°C and kept at this temperature for 2 hours, then drained into a stainless steel pan and cooled to room temperature. The obtained resin of the present invention has a softening point of 126°C and is dark red.

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Abstract

The present invention provides a cashew oil modified alkyl phenol-phenol formaldehyde tackifying resin, which is a cardanol and alkyl phenol formaldehyde copolymerized product, wherein the polymer side chain is a long carbon chain having unsaturated double bonds, and the softening point is 100-140 DEG C. The present invention further discloses a preparation method and an application of the cashew oil modified alkyl phenol-phenol formaldehyde tackifying resin, wherein the cashew oil modified alkyl phenol-phenol formaldehyde tackifying resin can be adopted as a rubber tackifier so as to provide good self-adhesion for the rubber material and reduce dynamic heat production of the rubber, and the rubber tackifier is particularly suitable for tire production.

Description

technical field [0001] The invention relates to the technical field of rubber industry, in particular to a cashew nut oil modified alkylphenol-phenolic tackifying resin and a preparation method and application thereof. Background technique [0002] The structural design of the tire requires the rubber used in different parts to have unique mechanical properties. A large number of different types of synthetic rubbers are used in the tire industry for various performance requirements. In order to improve the problem of insufficient viscosity between parts caused by synthetic rubber, solve the tight fit between rubber parts, reduce air bubbles, and prevent the relative position of parts from shifting, a variety of tackifying resins have been developed. The main categories are: hydrocarbon resins , Rosin resin, alkylphenolic resin and its modified products. Hydrocarbon resins include aliphatic, aromatic and cycloaliphatic resins generally having a number average molecular weig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G8/30C08L9/00C08L7/00C08L61/14
Inventor 侯远杨蒲启君
Owner SINO LEGEND CHINA CHEM
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