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A kind of synthetic method of 00 birefringence material

A birefringence and polymer technology, applied in the field of synthesis of 00 birefringence materials, can solve the problems of difficult molecular weight, poor control and relative molecular mass distribution, and low monomer conversion rate.

Active Publication Date: 2016-08-24
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this synthesis method has certain limitations. Due to the presence of chain transfer and chain termination reactions in bulk free radical polymerization, the relative molecular weight, relative molecular weight distribution and macromolecular structure cannot be well controlled, and its monomer conversion rate is low, which is easy to explode. Polymerization, the molecular weight is not easy to control and the relative molecular mass distribution is not good; therefore, the properties of 00 birefringence materials synthesized by bulk free radical polymerization are poorly controllable

Method used

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  • A kind of synthetic method of 00 birefringence material
  • A kind of synthetic method of 00 birefringence material
  • A kind of synthetic method of 00 birefringence material

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Embodiment 1

[0053] Select the monomer methyl methacrylate (MMA), trifluoroethyl methacrylate (TFEMA) and benzyl methacrylate (BzMA), through the formula (1), (2) (3) in combination with Table 1 The data is calculated as follows: MMA: TFEMA: BzMA=0.51:0.42:0.07

[0054] The reaction kettle undergoes strict baking-vacuum degassing-argon gas cooling, and repeats it three times, then adds the pre-dried catalyst cuprous halide (CuCl) / multi-nitrogen ligand 2,2-bipyridine (bpy), and seals it. After three times of vacuum degassing and filling with argon, the deoxygenated ATRP monomers (MMA, TFEMA and BzMA), the initiator bromoisobutyrate (NA) and the solvent ethyl acetate were used in the injector Add it into the reaction bottle, seal the reaction bottle and place it in an oil bath to adjust to 60°C for reaction. After the reaction is over, cool to end the reaction, dissolve with ethyl acetate, and neutralize Al 2 o 3 The column removes the cuprous / multi-nitrogen ligand complex catalyst system...

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Abstract

The invention discloses a method for synthesizing a 00 birefringent material. According to the method, two or more than two types of monomers polymerized by free radicals are subject to polymerization reaction by atom transfer radical polymerization, and the 00 birefringent polymer material is prepared by adjusting the ratio of two or more than two types of monomers polymerized by free radicals. By the method, problems that the molecular weight in the traditional method for synthesizing the 00 birefringent material is difficult to control, implosion can be caused in the reaction process, the distribution of the molecular weight corresponding to molecular mass is bad, the deviation of 00 birefringence is large and the reaction efficiency is low can be solved, and the 00 birefringence of the material can be adjusted by a click reaction.

Description

technical field [0001] The invention relates to a method for synthesizing 00 birefringence materials, in particular to a method for synthesizing 00 birefringence materials by using atom transfer radical polymerization and click chemistry synthesis techniques. Background technique [0002] Compared with glass, high molecular polymer materials have the advantages of light weight, low cost and easy processing, and have been widely used in various optical devices such as liquid crystal displays (LCD), optical discs and gratings. However, polymeric materials often exhibit birefringence properties due to their use in the manufacturing process or in the environment. Therefore precise lenses or other means are required to maintain the polarization state of the light. Therefore, it is very necessary to design and synthesize a kind of 00 birefringence material, and its polarization state does not change after light passes through this material. Films and other devices made of this m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/22C08F220/18C08G81/02
Inventor 祝明杨亚锋谭继风
Owner BOE TECH GRP CO LTD