Preparation method of tall oil modified alkyd resin

A technology of phenolic resin and tall oil, which is applied in the field of preparation of tall oil modified phenolic resin, can solve the problem of low scorch performance, and achieve the effects of simple process, improved product performance and increased production cost

Active Publication Date: 2008-07-30
WUHAN JINGHE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of existing products such as low scorch ...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 90g of phenol, 6g of tert-butylphenol, and 0.4g of catalyst (oxalic acid) into a 500mL three-necked flask, raise the temperature to 50°C, stir evenly, add 55g of 37% formaldehyde dropwise under reflux, and finish adding in about 1 hour, at 102°C Reflux for 3 hours. Heating and dehydration, when the system is 110°C, it becomes transparent, continue to heat up to 130°C, stop heating, stir for 15 minutes, heat up to maintain the dehydration state, start adding 38g of rosin oil dropwise at 160°C (30g of tall oil and 8g of rosin are heated and melted in advance) , 30 minutes to add. Continue to react at 180°C for 1 hour, add N 3 P 3 (OC 6 h 4 CHO) 6 0.1 g, vacuum dehydrated for 30 minutes (vacuum degree > 0.085 MPa), stopped the reaction, poured out the material, and obtained a reddish-brown transparent flaky solid after cooling.

Embodiment 2

[0020] Add 100g of phenol, 9g of tert-butylphenol, and 0.5g of catalyst (oxalic acid) into a 1L three-necked flask, raise the temperature to 50°C, stir evenly, add 65g of 37% formaldehyde dropwise under reflux, and finish adding in 1 hour and 10 minutes, 102 °C for 3 hours at reflux. Heating and dehydration, when the system is 110°C, it becomes transparent, continue to heat up to 130°C, stop heating, stir for 15 minutes, heat up to maintain the dehydration state, start adding 50g of rosin oil dropwise at 160°C (40g of tall oil and 10g of rosin are heated and melted in advance) , 30 minutes to add. Continue to react at 180°C for 1 hour, add N 3 P 3 (OC 6 h 4 CHO) 6 0.2 g, dehydrated in vacuum for 30 minutes (vacuum degree > 0.085 MPa), stopped the reaction, poured out the material, and obtained a reddish-brown transparent flaky solid after cooling.

Embodiment 3

[0022] Add 95kg of phenol, 7.5kg of tert-butylphenol, and 0.45g of catalyst (oxalic acid) into a 200L reactor, heat up to 50°C, start stirring, add 60kg of 37% formaldehyde dropwise under reflux, and finish adding in 1 hour and 30 minutes, 102 °C for 3 hours at reflux. After the reaction is over, adjust the reflux state to the dehydration state, heat up to 130°C, stop the heat rise, stir for 15 minutes, continue to heat up to maintain the dehydration state, and start to add 44kg of rosin oil dropwise at 160°C (35kg tall oil and 9kg rosin are added dropwise in advance. In the kettle, the temperature was raised to 130-150°C), and the addition was completed in 30 minutes. Raise the temperature to 180°C and continue the reaction for 1 hour, add N 3 P 3 (OC6H4CHO) 6 0.15 g, vacuum dehydrated for 30 minutes (vacuum degree > 0.085 MPa), and discharged to obtain a reddish-brown transparent flaky solid.

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PUM

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Abstract

The invention relates to a preparation method for tall oil-modified phenolic resin. The resin comprises the following components according to parts by weight: 90 to 100 shares of phenol, 6 to 9 shares of tert butylphenol, 55 to 65 shares of formaldehyde with 37 percent content, 0.4 to 0.5 shares of oxalic acid, 30 to 40 shares of tall oil, 8 to 10 shares of colophony, and 0.1 to 0.2 shares of hexa (4-aldehyde phenoxy) cyclic triphosphonitrile The invention adopts the brand-new production method of the technology of tall oil-modified phenolic resin, with simple process. The production cost is not increased, compared with the prior product, the product performance is greatly improved (reaching about 20 percent), and the product performance achieves or exceeds the performance of similar foreign products.

Description

technical field [0001] The invention relates to a preparation method of tall oil modified phenolic resin. technical background [0002] Reinforcing agent refers to additives that can increase the hardness and dynamic modulus of the rubber compound. Traditionally, the hardness of the rubber compound is increased by increasing the proportion of reinforcing fillers (such as carbon black), but this method will bring a series of process problems , and will damage other properties, and the use of reinforcing resin to increase the hardness can avoid these problems. Reinforcing agents include high styrene resin, phenolic resin, tall oil modified resin, cashew nut oil modified resin and other varieties. High styrene resin can be co-vulcanized with rubber, but its price is higher and its heat resistance is poor. Currently it is mainly used in non-colored miscellaneous products. The tire industry and the rubber roller industry mainly use phenolic reinforcing resins for reinforcement....

Claims

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Application Information

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IPC IPC(8): C08G8/32C08G8/34
Inventor 刘书正刘承美熊斌严建国王腊生袁春香
Owner WUHAN JINGHE CHEM
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