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Alpha-olefin-maleic anhydride copolymer as well as preparation method and application thereof

A maleic anhydride and copolymer technology, which is applied in the field of alpha-olefin-maleic anhydride copolymer microspheres and their preparation, can solve the problems of reduced polyolefin performance, etc. uniform effect

Pending Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problem of the existing polyolefin inorganic filling modification additives in the prior art that reduce the performance of polyolefin, and provide a kind of α-olefin-maleic anhydride copolymer and its preparation method and application. The copolymer is in the shape of microspheres, and the surface of the copolymer microspheres is clean and pollution-free, and the particles of the microspheres are uniform. It is used as a filling modification additive in polyolefins, especially polypropylene, without causing a significant decrease in polymer performance.

Method used

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  • Alpha-olefin-maleic anhydride copolymer as well as preparation method and application thereof
  • Alpha-olefin-maleic anhydride copolymer as well as preparation method and application thereof
  • Alpha-olefin-maleic anhydride copolymer as well as preparation method and application thereof

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preparation example Construction

[0040] The second aspect of the present invention provides a kind of preparation method of α-olefin-maleic anhydride copolymer, wherein, described method comprises the following steps:

[0041] (1) In an inert atmosphere, the polymerization monomer and the initiator are dissolved in an organic medium to form a homogeneous solution;

[0042] (2) After the homogeneous solution is subjected to a polymerization reaction to obtain a copolymer emulsion suspension, centrifugal separation is performed to obtain the α-olefin-maleic anhydride copolymer;

[0043] Wherein, the polymerized monomer is maleic anhydride and the α-olefin shown in formula (3); based on the total substance amount of the polymerized monomer, the molar content of the maleic anhydride is 48-53%, and the α - the molar content of olefins is 47-52%;

[0044]

[0045] Wherein, R is an alkane with 6-12 carbon atoms.

[0046] In the present invention, in the presence of an organic medium, the α-olefin shown in malei...

Embodiment 1

[0084] Add 11g of maleic anhydride, 0.6g of azobisisobutyronitrile, 8.4g of hexene, 90mL of hexane, and 87.8g of isoamyl acetate into a 500mL three-necked flask. After the materials are mixed evenly, a homogeneous solution is obtained. For 20 minutes, move the three-necked flask into a water bath at 60°C and react for 24 hours. After the reaction is completed, the obtained polymer emulsion suspension is centrifuged at a speed of 2000 rad / min for 20 minutes to obtain 9.7 g of polymer solid A1, corresponding to Polymer yield 50%. The particle size of the polymer microspheres is 1600 nm. Wherein, based on the total weight of the homogeneous solution, the concentration of the polymerizable monomer is 11.6wt%, and the concentration of the initiator is 0.36wt%.

[0085] The polymer microsphere A1 was carried out 1 According to H NMR measurement, in the polymer, the molar content of the structural unit provided by maleic anhydride is 50%, and the molar content of the structural uni...

Embodiment 2

[0089] Add 20g of maleic anhydride, 0.2g of azobisisobutyronitrile, 70mL of hexane, 17.2g of hexene and 87.8g of butyl butyrate into a 500mL three-necked flask. After the materials are mixed evenly, a homogeneous solution is obtained. Minutes, the three-neck flask was moved into a 95°C water bath, and reacted for 2 hours. After the reaction was completed, the obtained polymer emulsion suspension was centrifuged at a speed of 2000rad / min for 20 minutes to obtain 8.9g of polymer solid A2, corresponding to polymer Yield 48%. The particle size of the polymer microspheres is 1500 nm. Wherein, based on the total weight of the homogeneous solution, the concentration of the polymerizable monomer is 21.6wt%, and the concentration of the initiator is 0.12wt%.

[0090] The polymer microsphere A2 was carried out 1 According to H NMR measurement, in the polymer, the molar content of structural units provided by maleic anhydride is 48%, and the molar content of structural units provided b...

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Abstract

The invention relates to the field of high-molecular polymers, and discloses an alpha-olefin-maleic anhydride copolymer as well as a preparation method and application thereof. The copolymer comprises a structural unit as shown in a formula (1) and a structural unit as shown in a formula (2), wherein R is alkane with the carbon atom number of 6 to 12; based on the total molar weight of the copolymer, the molar content of the structural unit as shown in the formula (1) is 48-53%, and the molar content of the structural unit as shown in the formula (2) is 47-52%. The copolymer is in a microsphere shape, the surface of the copolymer microsphere is clean and pollution-free, the microsphere particles are uniform, and when the copolymer is used as a filling modification auxiliary agent in polyolefin, especially polypropylene, the performance of the polymer cannot be obviously reduced.

Description

technical field [0001] The invention relates to the field of high molecular polymers, in particular to an α-olefin-maleic anhydride copolymer microsphere and its preparation method and application. Background technique [0002] In the prior art, most copolymers containing maleic anhydride are prepared by solution or traditional precipitation polymerization. Shen Rong et al. disclosed in "Research on Styrene-Maleic Anhydride Copolymerization in Different Solvents" that maleic anhydride and styrene were reacted in ethyl acetate and N,N-dimethylformamide. After the reaction was completed, A polymer of maleic anhydride and styrene was prepared using ethanol as a precipitating agent (Journal of Wuhan Engineering University, 2019, 41(1):65-68). [0003] Liu Tingguo and others synthesized styrene-maleic anhydride copolymers by precipitation polymerization in toluene in "Synthesis of Low Molecular Weight Styrene-Maleic Anhydride Alternating Copolymers". [0004] Shi Xuelong et al....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F222/06C08F210/14C08L23/12C08L35/00C08L23/20
CPCC08F222/06C08F210/14C08L23/12C08L2205/18C08L35/00C08L23/20
Inventor 宋文波刘振杰张洁袁浩邵清
Owner CHINA PETROLEUM & CHEM CORP
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