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Polyhydroxy polyamine surface activity initiator and preparing method thereof

A polyhydroxy polyamine and surface active technology, which is applied in the preparation of amino hydroxyl compounds, chemical instruments and methods, and the preparation of organic compounds, can solve the problems of limited application value, inability to achieve cross-phase polymerization, and inability to popularize in large quantities. Achieve the effect of pure product, mild and controllable polymerization reaction conditions, and low energy consumption

Active Publication Date: 2016-08-24
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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  • Polyhydroxy polyamine surface activity initiator and preparing method thereof
  • Polyhydroxy polyamine surface activity initiator and preparing method thereof
  • Polyhydroxy polyamine surface activity initiator and preparing method thereof

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Embodiment Construction

[0019] Below in conjunction with embodiment the present invention is described in further detail.

[0020] Preparation of polyhydroxy polyamine surfactant initiator:

[0021] 1. Dissolve cetylamine in absolute ethanol, control the weight ratio of cetylamine to ethanol in the range of 1:3~1:3.5, then add epichlorohydrin and keep stirring, cetylamine 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°C, and the reaction time should reach 15-16 hours;

[0022] 2. Add diethanolamine and sodium hydroxide to the above reaction mixture, the moles of diethanolamine and sodium hydroxide should be the same as the moles of epichlorohydrin above, and gradually raise the reaction temperature to 60-70°C while stirring, At this time, a white precipitate is precipitated, which is the fine crystals of NaCl produced by the reaction. React at this temperature for 3 to 4 hours. After gradually cooling, the NaCl crystal...

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Abstract

The invention discloses a polyhydroxy polyamine surface activity initiator and a preparing method thereof. A tri-tert amine compound containing polyhydroxy group and cetyl group is synthesized and is made to have the characteristics of a surfactant; meanwhile, redox reaction can be conducted between tertiary amine and potassium persulfate at normal temperature, cation free radicals are formed on nitrogen atoms firstly and then converted into carbon free radicals at adjacent positions, free radicals can be generated repeatedly under flexible control, multiphase tandem connection polymerization can be achieved, polymerization between styrene and methyl acrylate and polymerization between styrene and acrylamide are triggerned on a water / oil interface in sequence, and a corresponding segmented copolymer is obtained; experiments prove that the rate of charge of a monomer is quite consistent with the component ratio of the copolymer, which implies that the ignition efficiency of the initiator is high. The polymerization reaction condition of the mode is mild and controllable, energy consumption is low, no other organic solvent or emulgator is used, the product is pure, and the requirement of green chemistry is completely met.

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] Polyolefins are a very important class of polymer materials with a wide variety of applications. These materials are generally obtained by homopolymerizing or copolymerizing olefin monomers through initiators. According to different polymerization occasions, initiators can be divided into two categories: oil-soluble and water-soluble, which are used for the polymerization of oil-soluble and water-soluble monomers respectively. , water-soluble initiators can also initiate the polymerization of oil-soluble monomers by diffusing into tiny emulsion micelles. In the existing polymer polymerization technology, the coordination between the initiator and the m...

Claims

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Application Information

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Patent Type & Authority Applications(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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