Method for preparing cardanol polyoxyethylene ether

A technology of cardanol polyoxyethylene ether and cardanol, which is applied in the preparation of ether from alkylene oxide, ether preparation, organic chemistry, etc. It can solve the problems of internal quality factors such as product molecular weight distribution, etc., and achieve a stable and controllable reaction , mild process conditions, good quality effect

Inactive Publication Date: 2018-06-08
上海邦高化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, internal quality factors such as product molecular weight distribution are not mentioned

Method used

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  • Method for preparing cardanol polyoxyethylene ether
  • Method for preparing cardanol polyoxyethylene ether
  • Method for preparing cardanol polyoxyethylene ether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 (preparation of BGF-10EO-A)

[0015] 304 grams of cardanol and 1.116 grams of sodium methoxide were put into the autoclave, and then the air in the autoclave was replaced by nitrogen filling and vacuuming for 3 times. Heat the material under stirring, and dehydrate it under vacuum at 90-120°C for 45min. Then start adding ethylene oxide under negative pressure, maintain the reaction temperature at 130-165°C, and pressure -0.08-0.26MPa, and finish adding 440 grams of ethylene oxide within 2.5 hours. Then carry out aging reaction 50MIN. to negative pressure in the kettle. Then remove the residual gas in the kettle at 125°C and -0.08MPa vacuum. Cool down to 80°C and add 1.9 g of lactic acid to neutralize the material to pH ~ 6, and discharge to obtain 734 g of product BGF-10EO-A.

Embodiment 2

[0016] Embodiment 2 (preparation of BGF-20EO-A)

[0017] 250 grams of cardanol and 1.5 grams of sodium methylate were dropped into the autoclave, and then the air in the autoclave was replaced by nitrogen filling and vacuuming for 3 times. Heat the material under stirring, and dehydrate it under vacuum at 90-120°C for 45min. Then start adding ethylene oxide under negative pressure, maintain the reaction temperature at 130-165°C, and pressure -0.08-0.25MPa, and finish adding 735 grams of ethylene oxide within 2.5 hours. Then carry out aging and heat preservation reaction for 1h to negative pressure in the kettle. Then remove the residual gas in the kettle at 125°C and -0.08MPa vacuum. Cool down to 80°C and add 2.5 grams of lactic acid to neutralize the material to pH ~ 6, and discharge to obtain 976 grams of product BGF-20EO-A.

Embodiment 3

[0018] Embodiment 3 (preparation of BGF-30EO-A)

[0019] 220 grams of cardanol and 1.8 grams of sodium ethylate were dropped into the autoclave, and then the air in the autoclave was replaced by nitrogen filling and vacuuming for 3 times. Heat the material under stirring, and dehydrate it under vacuum at 90-120°C for 45min. Then start adding ethylene oxide under negative pressure, maintain the reaction temperature at 130-165°C, and pressure -0.08-0.24MPa, and finish adding 968 grams of ethylene oxide within 3.0 hours. Then carry out aging and heat preservation reaction for 1h to negative pressure in the kettle. Then remove the residual gas in the kettle at 125°C and -0.08MPa vacuum. Cool down to 85°C and add 2.4 grams of lactic acid to neutralize the material until slightly acidic, and discharge to obtain 1178 grams of the product BGF-30EO-A.

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Abstract

The invention provides a method for preparing cardanol polyoxyethylene ether. The method comprises the following steps of, in a pressure-resistant reactor, enabling raw materials cardanol and ethyleneoxide, under the action of an alkoxide catalyst, in heating and pressurizing conditions, to complete a polymerization reaction within 2h to 4h; afterwards, cooling reaction materials, and neutralizing by using lactic acid, so that the cardanol polyoxyethylene ether is prepared. As alkoxide is used as the catalyst to replace a conventional inorganic strong base (such as NaOH and KOH) and the lactic acid is used as a neutralizer to replace usually used acetic acid, the polymerization reaction is enabled to be stable and controllable; an obtained product is light in color and luster, narrower inmolecular weight distribution and good in rheological characteristic, and therefore, has favorable application performance. The method provided by the invention is high in adaptability to the raw materials. A commercially available unsaturated cardanol raw material can be directly used. According to application demand, the molecular number of the ethylene oxide needing to be added can be adjusted, and thus, the hydrophile-lipophile balance (an HLB value) of the product is regulated, so as to prepare functional products of an emulsifier, a wetting and dispersing agent, a washing agent, a leveling agent and the like, which are applicable to corresponding fields.

Description

technical field [0001] The invention relates to the use of biomass raw material cardanol to carry out ethoxylation addition polymerization to prepare a class of nonionic surfactants. The invention belongs to the technical category of polymer synthesis chemistry and fine chemical industry. Background technique [0002] Cardanol is produced from cashew nut shell liquid. It is a very rare natural biomass phenol. With its unique structure and properties, it may replace petroleum-based phenolic raw materials in chemical synthesis, and produce biophenols used in chemical building materials, vehicle and ship construction, aerospace, electronic communications and other fields. New polymer materials. At present, cardanol has been well used in the synthesis of thermosetting epoxy resins, phenolic resins and other polymer materials. [0003] With the advancement of science and technology and the development of industrial production, the production and application of surfactants have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/28C07C41/03C07C43/23
CPCC08G65/2612C07C41/03C07C43/23
Inventor 车飞张景清吕会朝王利民赵雪华
Owner 上海邦高化学有限公司
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