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Tall oil modified phenolic resin and preparation method thereof

A technology of phenolic resin and tall oil, which is applied in the field of tall oil modified phenolic resin and its preparation, can solve the problems of poor resin dispersion, influence on dispersion, and low efficiency

Active Publication Date: 2014-07-09
SINO LEGEND CHINA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yet the inventor finds that the compatibility of tert-butylphenol and rubber is not very good and influences its dispersion in rubber, and the efficiency of oxalic acid catalyzed tall oil and phenolic resin reaction is also very low, and introduces six (4 -Aldehydephenoxy)cyclotriphosphazene (may lead to partial crosslinking of the resin, and the crosslinked resin is not well dispersed in the rubber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 90 grams of phenol, 10 grams of tert-octylphenol, and 1 gram of concentrated sulfuric acid into a 500 ml four-neck flask, heat to 100°C, stir evenly, add 70 grams of 37% formaldehyde dropwise within 45 minutes, reflux for 45 minutes, and then Raise the temperature to 160 DEG C and dehydrate for 1 hour to obtain the resin matrix, then add 40 grams of tall oil and raise the temperature to 220 DEG C and stir for 60 minutes, then add 1.6 grams of NaOH aqueous solution with a concentration of 50% (weight), continue to stir for 10 minutes, and vacuum dehydrate for 30 minutes. Minutes (vacuum degree-0.095MPa), the reaction was stopped to obtain tall oil modified phenolic resin PF-1, with a softening point of 98°C.

Embodiment 2

[0019] Add 100 grams of phenol, 15 grams of dodecylphenol, and 1 gram of p-toluenesulfonic acid into a 500 ml four-necked flask, heat to 100°C, and after stirring evenly, add 60 grams of 37% formaldehyde dropwise within 45 minutes, and reflux for 45 minutes. Minutes, and then heated up to 160 ° C dehydration for 1 hour to obtain the resin matrix, then add 40 grams of tall oil and heat up to 220 ° C and stir for 50 minutes, add 0.5 grams of 1,8-diazabicyclo (5,4,0) For monocarbene-7 (DBU), continue to stir for 10 minutes, then vacuum dehydrate for 20 minutes (vacuum degree -0.095MPa), stop the reaction, and obtain tall oil modified phenolic resin PF-2, with a softening point of 95°C.

Embodiment 3

[0021] Add 900 grams of phenol, 100 grams of tert-octylphenol, 100 grams of dodecylphenol, and 20 grams of dodecylbenzenesulfonic acid into a 5-liter four-necked flask, heat to 100 ° C, stir well, and within 60 minutes Add 80 grams of 37% formaldehyde dropwise, reflux for 60 minutes, then raise the temperature to 160°C for 90 hours to obtain the resin matrix, then add 400 grams of tall oil and heat up to 220°C and stir for 90 minutes, add 10 grams of DBU, and continue stirring for 20 minutes , vacuum dehydration for 30 minutes (vacuum degree-0.095MPa), stop the reaction, and obtain tall oil modified phenolic resin PF-3, with a softening point of 97°C.

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Abstract

The invention discloses tall oil modified phenolic resin including the following components by weight: 50-100 parts of phenol, 1-50 parts of alkylphenol, 50-100 parts of a 37% formaldehyde aqueous solution, 0.1-5 parts of a catalyst, 1-100 parts of tall oil and 0.1-5 parts of a terminating agent. The invention also discloses a two-step preparation method of the tall oil modified phenolic resin. The tall oil modified phenolic resin is suitable for rubber reinforcement, and is particularly suitable for the production of tires.

Description

technical field [0001] The invention relates to a tall oil modified phenolic resin and a preparation method thereof. Background technique [0002] Natural rubber and synthetic rubber (such as styrene-butadiene rubber, nitrile rubber, etc.) have low hardness and elastic modulus, which cannot meet the needs of practical applications. Improving the hardness and elastic modulus of rubber can be achieved by filling a large amount of carbon black in the rubber compound. However, some rubber parts, such as tire apex rubber, require a high hardness of the rubber compound. Filling too much carbon black will make processing difficult, and tire molding is very difficult. The improved method is to add thermoplastic phenolic resin to the rubber compound. Before vulcanization, the resin acts as a plasticizer in the rubber compound to facilitate the mixing and processing of the rubber compound; during the vulcanization process, the resin and rubber are co-vulcanized to form a resin networ...

Claims

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Application Information

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IPC IPC(8): C08G8/34C08G8/32C08L61/14C08L7/00
Inventor 鲁代仁
Owner SINO LEGEND CHINA CHEM
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