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A kind of polyhydroxy polyamine surfactant initiator and preparation method thereof

A technology of surface active and hydroxyl polyamines, which is applied in the preparation of amino hydroxyl compounds, chemical instruments and methods, and the preparation of organic compounds. It can solve the problem of insufficient adaptability of block polymers, inability to achieve cross-phase polymerization, and limited application value. and other problems, to achieve the effect of fast polymerization reaction, high conversion rate, mild and controllable reaction conditions

Active Publication Date: 2018-03-30
NINGBO UNIV
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Problems solved by technology

For example, living radical polymerization technology can make the synthesis of block copolymers easy and convenient, but these living radical polymerizations can only be carried out in the organic phase generally, and cross-phase polymerization cannot be achieved. The synthesized block polymers are suitable for Insufficient performance, limited application value, so far cannot be widely promoted

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  • A kind of polyhydroxy polyamine surfactant initiator and preparation method thereof
  • A kind of polyhydroxy polyamine surfactant initiator and preparation method thereof
  • A kind of polyhydroxy polyamine surfactant initiator and preparation method thereof

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the embodiments.

[0020] Preparation of polyhydroxypolyamine surface active initiator:

[0021] 1. Dissolve hexadecylamine in absolute ethanol, control the weight ratio of hexadecylamine to ethanol in the range of 1:3~1:3.5, then add epichlorohydrin and keep stirring, hexadecylamine and epichlorohydrin Keep the molar ratio of 1:2 as much as possible, control the temperature of the system in the range of 25-30℃, and the reaction time should reach 15-16 hours;

[0022] 2. Add diethanolamine and sodium hydroxide to the above reaction mixture. The number of moles of diethanolamine and sodium hydroxide should be the same as the number of moles of the above-mentioned epichlorohydrin. Under stirring, the reaction temperature is gradually increased to 60-70°C. At this time, a white precipitate precipitates out. This is the NaCl fine crystals produced by the reaction. React at this temperature for 3 t...

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Abstract

The invention relates to a polyhydroxy polyamine surface active initiator and a preparation method thereof. Synthesize a tri-tertiary amine compound containing polyhydroxyl and hexadecyl, so that it exhibits the characteristics of a surfactant. At the same time, the tertiary amine can undergo a redox reaction with potassium persulfate at room temperature, and first form a cation on the nitrogen atom Free radicals are then converted into carbon free radicals at adjacent positions. The generation of free radicals can be repeated many times and flexibly controlled to achieve multi-phase series polymerization. Styrene and methyl acrylate and Styrene and acrylamide are polymerized to obtain corresponding multi-block copolymers. The experiment proves that the feed ratio of the monomer is very consistent with the composition ratio of the copolymer, indicating that the initiator has a high initiation efficiency, and the polymerization reaction conditions of this mode are mild. Controllable, low energy consumption, no other organic solvents and emulsifiers, pure product, fully meet the requirements of green chemistry.

Description

Technical field [0001] The invention relates to the technical field of polymer material synthesis, in particular to a polyhydroxy polyamine surface active initiator and a chemical preparation method thereof. The novel initiator can be used for the green synthesis of olefin multi-block copolymers. Background technique [0002] Polyolefin is a very important class of polymer materials with a wide variety of applications. These materials are generally obtained by homopolymerization or copolymerization of olefin monomers through initiators. According to different polymerization occasions, initiators can be divided into two categories: oil-soluble and water-soluble. They are used for the polymerization of oil-soluble and water-soluble monomers. The water-soluble initiator can also initiate the polymerization of oil-soluble monomers by diffusing into tiny emulsion micelles. In the existing polymer polymerization technology, the combination of initiator and monomer is not flexible enou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C213/02C07C215/18B01F17/16C08F2/30C08F295/00C08F212/08C08F220/18C08F220/56C09K23/16
Inventor 孙怀艳张瑞丰李伟逊尚传洋江峰肖通虎龙能兵
Owner NINGBO UNIV
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