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Synthetic method of stannous ricinoleate

A technology of stannous ricinoleate and a synthesis method, applied in chemical instruments and methods, carboxylate preparation, carboxylate preparation and other directions, can solve problems such as slow reaction speed, inability to stannous chloride, etc., and achieve side reactions to occur. The effect of less, high reaction efficiency and low cost of raw materials

Active Publication Date: 2021-03-30
SHANGHAI MAIPU NEW MATERIAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is due to the weak acidity of ricinoleic acid and the slow reaction rate with stannous chloride, yet stannous chloride can react rapidly with water under heating (80-100° C.) to generate stannous hydroxide or stannous oxide, which As a result, stannous chloride cannot fully react with ricinoleic acid
And, the generation of tin protooxide also can cause the intramolecular esterification reaction of ricinoleic acid, generate a large amount of ricinoleic acid lactone by-products (see comparative example 1)

Method used

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  • Synthetic method of stannous ricinoleate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]

[0034] The first step of reaction is to prepare sodium ricinoleate: add ricinoleic acid (107.4g, 0.36mol) and sodium hydroxide (14.4g, 0.36mol) into ethanol (360mL), and the molar concentration of ricinoleic acid is 1.0M. The system was stirred and reacted at 64°C for 4 hours. After the reaction, the system was a clear system. Collect the reaction solution, carry out post-processing operation: decompression distillation recovery solvent (can be recycled), then through oil pump vacuum drying, grinding, to obtain light yellow powdery solid, which is the target product sodium ricinoleate (114.3g), yield 99.0 %.

Embodiment 2

[0036]The reaction steps and operations are the same as in Example 1, except that the reaction solvent is methanol (360 mL). The reaction was stopped, and the target product sodium ricinoleate (114.4 g, yield 99.1%) was obtained through aftertreatment.

Embodiment 3

[0038] The reaction steps and operations are the same as in Example 1, except that the reaction solvent is isopropanol (360 mL). The reaction was stopped, and the target product sodium ricinoleate (114.1 g, yield 98.9%) was obtained through aftertreatment.

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Abstract

The invention discloses a synthetic method of stannous ricinoleate. According to the method, two steps of reactions are adopted, ricinoleic acid is used as a raw material in the first step of reaction, and a solvent A is used for reacting with sodium hydroxide, sodium methoxide or a sodium methoxide methanol solution under certain reaction conditions to synthesize sodium ricinoleate; and in the second step of reaction, the sodium ricinoleate is used as a raw material to react with anhydrous stannous chloride, stannous chloride hydrate or stannous sulfate by using a solvent B under a heating condition to synthesize stannous ricinoleate. The solvent A is an alcohol solvent; the solvent B is an alcohol solvent, an aromatic solvent or a polar aprotic solvent; and the solvent A and the solventB can be recovered by a distillation method and can be recycled. The method has the advantages of low raw material cost, simple operation, less discharge of three wastes, high reaction efficiency andthe like.

Description

technical field [0001] The invention relates to a synthesis method of stannous ricinoleate, which belongs to the technical field of chemical organic synthesis. Background technique [0002] Polyurethane foam material has the advantages of light weight, good thermal insulation performance, excellent flexibility, wear resistance, heat resistance, elasticity, mechanical properties and high strength, and is widely used in refrigerators, freezers, building insulation boards, pipeline insulation, logistics refrigeration, etc. Chain, modern automobile manufacturing and other fields. Because of the various requirements for making polyurethane foams, catalysts are used in many cases. In addition to accelerating the reaction, these catalysts can also control the relative speed of parallel reactions, affect the fluidity of the reaction mixture, the physical and mechanical properties of the finished product, and the technical parameters of the process. [0003] Stannous octoate and di...

Claims

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Application Information

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IPC IPC(8): C07C51/41C07C59/44
CPCC07C51/412C07C59/44
Inventor 吴凯凯余正坤周永贵
Owner SHANGHAI MAIPU NEW MATERIAL TECH CO LTD
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