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Maleic anhydride copolymer as well as preparation method and application thereof

A technology of maleic anhydride and copolymer, applied in the field of maleic anhydride copolymer and its preparation, can solve the problems of polluted environment, complex preparation process of maleic anhydride polymer and the like

Pending Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the preparation process of the maleic anhydride polymer as the photoluminescent material is complicated and pollutes the environment in the prior art, and at the same time overcome the problem that the material has a special smell due to the use of an ester solvent, A maleic anhydride copolymer and its preparation method and application are provided. The surface of the maleic anhydride copolymer is clean and pollution-free, and the polymer is in the shape of microspheres. agent, significantly reducing the environmental pollution caused by the preparation process, the prepared polymer material is spherical, and has no special odor of ester solvents such as isoamyl acetate, and can be used as a photoluminescent material

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  • Maleic anhydride copolymer as well as preparation method and application thereof
  • Maleic anhydride copolymer as well as preparation method and application thereof
  • Maleic anhydride copolymer as well as preparation method and application thereof

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preparation example Construction

[0025] The first aspect of the present invention provides a kind of preparation method of maleic anhydride copolymer, it is characterized in that, described method comprises the following steps:

[0026] (1) In an inert atmosphere, the polymerization monomer and the initiator are dissolved in the reaction medium to form a homogeneous solution;

[0027] (2) After the homogeneous solution is polymerized to obtain a copolymer emulsion suspension, the maleic anhydride copolymer is obtained after solid-liquid separation;

[0028] Wherein, the polymerized monomers are maleic anhydride and α-methylstyrene; based on the total weight of the polymerized monomers, the amount of the maleic anhydride is 29-63wt%, and the amount of the α-methylstyrene 36-72wt%;

[0029] The reaction medium is a mixture of compound I shown in formula (1) and compound II shown in formula (2);

[0030]

[0031] Among them, R 1 and R 2 Each is independently an alkyl group with 1 to 3 carbon atoms; R 3 ,...

Embodiment 1

[0069] Add 5g maleic anhydride, 0.9g azobisisobutyronitrile, 6g α-methylstyrene, 40ml acetone and 60ml toluene into a 500mL three-necked flask. After the materials are mixed evenly, a homogeneous solution is obtained, and nitrogen gas is passed for 20 minutes. Move the three-necked flask into a water bath at 70°C and react for 5 hours. After the reaction is completed, the obtained polymer emulsion suspension is centrifuged at a speed of 1000 rad / min for 40 minutes to obtain 7.8 g of polymer A1, corresponding to a polymer yield of 71%. . The size of the polymer microsphere A1 is 1200 nm. Wherein, based on the total weight of the homogeneous solution, the concentration of the polymerizable monomer is 11.5wt%, and the concentration of the initiator is 0.9wt%.

[0070] The polymer microsphere A1 was carried out 1 H NMR measures, and records based on the total molar weight of each structural unit in the polymer, the molar content of the structural unit A provided by maleic anhydr...

Embodiment 2

[0075] Add 2.6g of maleic anhydride, 1g of azobisisobutyronitrile, 3g of α-methylstyrene, 40ml of acetone and 60ml of p-xylene into a 500mL three-necked flask. After the materials are mixed evenly, a homogeneous solution is obtained, and nitrogen gas is passed for 20 minutes. , moved the three-necked flask into a 90°C water bath, and reacted for 2 hours. After the reaction was completed, the obtained polymer emulsion suspension was centrifuged at a speed of 4000 rad / min for 10 minutes to obtain 4.2 g of polymer solids, corresponding to the polymer yield. 75%. The size of the polymer microsphere A2 is 500 nm. Wherein, based on the total weight of the homogeneous solution, the concentration of the polymerizable monomer is 6.3 wt%, and the concentration of the initiator is 1.1 wt%.

[0076] The polymer microsphere A2 was carried out 1 H NMR measures, and records based on the total molar weight of each structural unit in the polymer, the molar content of the structural unit A pr...

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Abstract

The invention relates to the field of high-molecular polymers, and discloses a maleic anhydride copolymer as well as a preparation method and application thereof. The method comprises the following steps: in an inert atmosphere, dissolving a polymeric monomer and an initiator in a reaction medium to form a homogeneous solution; carrying out polymerization reaction on the homogeneous solution to obtain a copolymer emulsion suspension, and carrying out solid-liquid separation; the polymeric monomers are maleic anhydride and alpha-methyl styrene; wherein the use amount of the maleic anhydride is 29-63 wt%, and the use amount of the alpha-methyl styrene is 36-72 wt%; the reaction medium is a mixture of a compound I shown in a formula (1) and a compound II shown in a formula (2); the surface of the maleic anhydride copolymer is clean and pollution-free, the copolymer is in the shape of microspheres with uniform particles, and pollution aids such as an emulsifier and the like are not used in the preparation process, so that the environmental pollution caused in the preparation process is remarkably reduced. The copolymer has no special odor of ester solvents. The material has a photoluminescence effect.

Description

technical field [0001] The invention relates to the field of polymers, in particular to a maleic anhydride copolymer and its preparation method and application. Background technique [0002] Traditional organic photoluminescent materials are mainly molecules with rigid planes and π-electron conjugated systems and rare earth complexes (Journal of Natural Sciences, Harbin Normal University, 2006, 22(3): 70-70). The synthesis and preparation of these luminescent materials require relatively complicated process routes and relatively high preparation costs, which are not conducive to the promotion and application of photoluminescent materials. Finding a simple, environmentally friendly and economical method for preparing photoluminescent polymer materials is of great significance to the promotion and application of photoluminescent materials. Maleic anhydride polymers have photoluminescent properties and have many potential applications in the field of fluorescent materials (Pol...

Claims

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Application Information

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IPC IPC(8): C08F212/12C08F222/06C09K11/06
CPCC08F212/12C09K11/06C09K2211/145C08F222/06
Inventor 张洁刘振杰宋文波胡慧杰李德展
Owner CHINA PETROLEUM & CHEM CORP
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