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Acrylate copolymer as well as preparation method and application thereof

A technology of acrylates and copolymers, applied in the field of acrylates copolymers and its preparation, can solve the problems of poor compatibility of inorganic anti-opening agents, difficulty in dispersing, film surface properties and printing effects, etc., and achieve the effect of improving the opening performance

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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, inorganic anti-blocking agents usually have poor compatibility with polymers, and there are problems of easy agglomeration and difficulty in dispersing during processing
The addition of slip agents such as oleic acid amide and other antistatic agents will have a negative impact on the surface properties and printing of the film

Method used

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  • Acrylate copolymer as well as preparation method and application thereof
  • Acrylate copolymer as well as preparation method and application thereof

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preparation example Construction

[0020] A first aspect of the present invention provides a method for preparing an acrylate copolymer, wherein the method comprises the following steps:

[0021] (1) In an inert atmosphere, the polymerization monomer and the initiator are dissolved in an organic medium to form a homogeneous solution;

[0022] (2) After the homogeneous solution is subjected to a polymerization reaction to obtain a copolymer emulsion suspension, centrifugal separation is performed to obtain the acrylate copolymer;

[0023] Wherein, the polymerized monomer includes maleic anhydride, styrene and the monomer shown in formula (1); based on the total substance amount of the polymerized monomer, the molar content of the maleic anhydride is 47-52% ; The molar ratio of the styrene to the monomer represented by the formula (1) is 10:1-1:10;

[0024] Among them, R 1 selected from H, methyl or ethyl; R 2 It is a straight-chain or branched-chain alkyl group with 1-5 carbon atoms.

[0025] In the presen...

Embodiment 1

[0068] Add 11g of maleic anhydride, 0.6g of azobisisobutyronitrile, 10g of methyl methacrylate, 1.04g of styrene and 87.8g of isoamyl acetate into a 500mL three-necked flask, and mix the materials uniformly to obtain a homogeneous solution , blow nitrogen for 20 minutes, move the three-necked flask into a water bath at 60°C, and react for 12 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 a polymer solid A1 12.22 g, corresponding to a polymer yield of 61.6%. The particle size of the polymer microspheres is 1200 nm. Wherein, based on the total weight of the homogeneous solution, the concentration of the polymerizable monomer is 20wt%, and the concentration of the initiator is 0.54wt%. Based on the total amount of polymerized monomers, the molar content of maleic anhydride is 50.5%, and the molar ratio of styrene to methyl methacrylate is 1:10.

[0069] The polymer microsphere A...

Embodiment 2

[0073] Add 10.5g maleic anhydride, 0.89g azobisisobutyronitrile, 11.4g ethyl methacrylate, 2.08g styrene and 87.8g butyl butyrate into a 500mL three-necked flask, and mix the materials uniformly to obtain a homogeneous Solution, blow nitrogen for 20 minutes, move the three-neck flask into a 70°C water bath, and react for 5 hours. After the reaction is completed, the obtained polymer emulsion suspension is centrifuged at a speed of 2000rad / min for 20 minutes to obtain a polymer solid A2 13.9 g, corresponding to a polymer yield of 58%. 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 20.9wt%, and the concentration of the initiator is 0.79wt%. Based on the total amount of polymerized monomers, the molar content of maleic anhydride was 47.8%, and the molar ratio of styrene to ethyl methacrylate was 1:5.

[0074] The polymer microsphere A2 was carried out 1 ...

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Abstract

The invention relates to the field of high-molecular polymers, and discloses an acrylate copolymer as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) dissolving a polymeric monomer and an initiator in an organic medium in an inert atmosphere to form a homogeneous solution; and (2) carrying out polymerization reaction on the homogeneous solution to obtain a copolymer emulsion suspension, and carrying out centrifugal separation to obtain the acrylate copolymer, wherein the polymeric monomer comprises maleic anhydride, styrene and a monomer as shown in a formula (1); the molar content of maleic anhydride is 47-52% based on the total amount of substance of the polymeric monomer; the molar ratio of styrene to the monomer shown in the formula (1) is (10: 1)-(1: 10); the surface of the acrylate copolymer is clean and pollution-free, the copolymer is in a microsphere shape with uniform particles, and when the acrylate copolymer is used as an anti-blocking agent for a polyolefin film, especially for a polyethylene film prepared by copolymerization of ethylene and butylene, the anti-blocking performance of the polyolefin film can be remarkably improved.

Description

technical field [0001] The invention relates to the field of polymers, in particular to an acrylic ester copolymer and its preparation method and application. Background technique [0002] In the prior art, when the polyolefin film is prepared, there are a large number of exposed molecular chain ends and small oligomer molecules on the surface layer. Interpenetration and entanglement with the molecular chain ends will make it difficult to open; after the film is tightly bonded, due to the short distance, the van der Waals force between the molecules is obvious; In the film, a vacuum tight state is formed between the films, and it is not easy to separate; with the increase of the film production speed, the accumulation of static electricity on the surface of the film increases, showing the electrostatic adsorption between the films. The above reasons make it difficult to open the polyethylene film. , which greatly affects the finished product quality and product pass rate of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F222/08C08F212/08C08F220/14C08F220/18C08L23/08C08L35/00C08L33/10C08L33/12C08J5/18
CPCC08F222/08C08F220/1802C08F220/1803C08J5/18C08F220/1804C08J2323/08C08J2435/00C08J2433/10C08J2433/12C08F212/08C08F220/14
Inventor 刘振杰宋文波张洁邹发生赵梦垚
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