Monoepoxy material and preparation method thereof

A single epoxy, CH2CH3 technology, used in the chemical industry, can solve the problems of no choice of toughening agent, oily (water-based) epoxy resin is brittle, etc., to achieve good flexibility and adhesion, large room for adjustment, stability Good results

Active Publication Date: 2020-06-05
上海固帮新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a kind of single epoxy material and preparation method thereof, described this kind of single epoxy material and preparation method thereof will solve the problems in the prior art The technical problem of oily (water-based) epoxy resin being brittle, and to solve the technical problem that the current water-based epoxy resin system toughener has no or less choices

Method used

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  • Monoepoxy material and preparation method thereof
  • Monoepoxy material and preparation method thereof
  • Monoepoxy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020]

[0021] A preparation method of a single epoxy material: Add cardanol polyoxyethylene ether (n=0) (344g, 1mol) into a four-necked bottle, add an appropriate amount of solvent to dilute, and then add (92.5g, 1mol) epichlorohydrin , heated to 50°C, then slowly added 35g of boron trifluoride diethyl ether dropwise, stirred at this temperature for 5 hours, then added dropwise a 50% aqueous solution of sodium hydroxide (1eq) at this temperature, and controlled the temperature during the dropwise addition Do not exceed 120°C. After the dropwise addition, keep the temperature at 50-120°C for 10 hours. After the reaction is detected by GC, wash with water 2-3 times, each time with 250 mL of water, and then distill the organic phase under reduced pressure at 120°C. When the solid content > 99.5%, the vacuum distillation was stopped, and the indicators were detected, and a light yellow liquid WO (398g, 99.5%) was obtained after meeting the requirements. Epoxy value: 0.2499mol...

Embodiment 2

[0028]

[0029] A kind of preparation method of single epoxy material: cardanol polyoxyethylene ether (n=50) (2104g, 1mol) is added in the four-necked bottle, adds toluene (20L) to dilute, then adds epichlorohydrin (462.6, 5mol ), heated to 100°C, added 2.1g of boron trifluoride diethyl ether at this temperature and then stirred for 5 hours, then slowly added NaOH aqueous solution (160g, 50% aqueous solution) dropwise, and the temperature should not exceed 120 ℃, keep the temperature at 80-110℃ for 10 hours after the dropwise addition, wash with water for 2-3 times after GC detection, then distill the organic phase under reduced pressure at 50-120℃, and detect when the solid content is >99.5% Stop the distillation under reduced pressure, and check the indicators. After meeting the requirements, the off-white solid W1 is obtained, 2140g (Y=99%). Epoxy value: 0.0468mol / 100g

Embodiment 3

[0031]

[0032] A kind of preparation method of single epoxy material: cardanol polyoxyethylene ether (4444g, 1mol) is added in the four-necked bottle, adds xylene (40L), then adds epichlorohydrin (925g, 10mol), is heated to 60 ℃, add boron trifluoride diethyl ether 50g at this temperature and then stir for 5 hours, add KOH aqueous solution (224g, 50% aqueous solution) dropwise at this temperature, and pay attention to controlling the temperature not exceeding 120°C during the dropping process. Keep the temperature at 50°C for 10 hours, wash with water for 2-3 times after GC detection, then distill the organic phase under reduced pressure at 50-120°C, stop the reduced-pressure distillation when the solid content is >99.5%, and check the indicators , after meeting the requirements, the off-white solid W2 was discharged, 4720g, (Y=98.3), epoxy value: 0.022mol / 100g.

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Abstract

The invention provides a monoepoxy material. The monoepoxy material has the following structural formula. The invention also provides a preparation method of the monoepoxy material. The compound not only can be used as an oily active toughening agent, but also can be used as a water-based epoxy active toughening agent, and has the characteristics of good stability, excellent heat resistance, goodflexibility and good adhesive force. The monoepoxy material is also a good emulsifier, and because the product does not contain environmental pollution components such as nonylphenol and the like, theadjustable margin is large, so that the product has a good application prospect.

Description

technical field [0001] The invention belongs to the field of chemical industry and relates to an epoxy material, in particular to a single epoxy material and a preparation method thereof. Background technique [0002] Calderol is extracted from natural cashew nut shell oil by advanced technology, and can replace or partially replace phenol to make epoxy curing agent, liquid phenolic resin, liquid or powdered thermosetting phenolic resin. [0003] Due to its special chemical structure, cardanol also has the following characteristics: 1. Contains benzene ring structure and has high temperature resistance; 2. The polar hydroxyl group can provide the system with wetting and activity on the contact surface; 3. The meta-position contains unsaturation The carbon 15 straight chain of the double bond can provide the system with good toughness, excellent hydrophobicity, low permeability and self-drying property. Contents of the invention [0004] The present invention provides a ki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D301/28C07D303/24C08L63/00C08L71/02C08K5/1515C08G65/337
CPCC07D301/28C07D303/24C08K5/1515C08L63/00C08G65/337C08L71/02
Inventor 宋云霞
Owner 上海固帮新材料科技有限公司
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