A kind of polymerization method of naphthalimide fluorescent dye

A technology for polymerizing and fluorescent dyes, applied in the field of functional polymer material synthesis, can solve the problems of poor color fastness, high cost and difficult processing.

Active Publication Date: 2021-05-18
NINGBO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to its large conjugated structure will inevitably bring rigidity, difficult to dissolve, difficult to disperse, difficult to process, poor color fastness
One transformation method is to turn naphthalimide fluorescent molecules into polymerizable monomers, but this transformation is chemically difficult and costly, and it is easy to affect key polymerization reactions, and its adaptability and diversity are poor

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  • A kind of polymerization method of naphthalimide fluorescent dye
  • A kind of polymerization method of naphthalimide fluorescent dye
  • A kind of polymerization method of naphthalimide fluorescent dye

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Embodiment Construction

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

[0020] Preparation of functional initiators:

[0021] With 4-bromonaphthalimide fluorescent dye starting material, there is a ready-made method for the preparation of this raw material compound, which will not be repeated here. The following are the specific preparation steps:

[0022] 1) Dissolve 4-bromonaphthalimide fluorescent dye in dioxane solvent, then add ethylenediamine, the molar ratio of fluorescent dye to butanediamine is 1:2, the weight of dye and dioxane The ratio is controlled in the range of 1:5 to 1:6, the temperature of the reaction solution is controlled in the range of 80 to 100°C under stirring, and the reaction time is 4 to 5 hours. After the reaction is completed, it is cooled to room temperature, and then poured into clean water to collect the precipitated substance Washing with clear water several times to remove unreacted ethylenediamine and solvent, an...

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Abstract

The invention relates to a method for polymerizing a naphthalimide fluorescent dye. Synthesize a kind of amphiphilic compound containing 4-amino-1,8-naphthalimide fluorescent group and tertiary amine structure, can be used as the initiator of free radical polymerization, and its tertiary amine can react with potassium persulfate at normal temperature Oxidation-reduction reactions occur, and active free radicals are generated many times, which can initiate the polymerization of oil-soluble monomer styrene and water-soluble monomer acrylamide on the water / oil interface, so as to realize the polymer of naphthalimide fluorescent dye For the purpose of chemicalization, this mode can make functionalization and polymerization do not interfere with each other, has a large degree of freedom of operation, a variety of products, mild polymerization conditions, no organic solvents and emulsifiers, and meets the requirements of green chemistry.

Description

technical field [0001] The invention relates to the technical field of synthesis of functional polymer materials, in particular to a polymerized preparation technology of naphthalimide fluorescent dyes, through which the new synthesis technology can introduce naphthalimide fluorescent dye molecules into polyolefin polymers Materials, resulting in a new class of functional polymer materials and related application technologies. Background technique [0002] Polyolefin is a very important general-purpose polymer material. It is formed by free radical polymerization of several olefin monomers. For different purposes, the structure can be adjusted according to the monomer copolymerization technology, so it is widely used. Initiators are essential in the preparation of polymer materials. The usual initiators are a class of compounds that can generate free radicals, such as oil-soluble peroxygen, azo initiators, and water-soluble persulfates. The use of an initiator must be coord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F257/02C08F220/56C08F112/08C08F4/08
CPCC08F4/08C08F112/08C08F257/02C08F220/56
Inventor 李艳张瑞丰李赛赛肖通虎龙能兵
Owner NINGBO UNIV
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