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Hydrocarbyl-terminated hyperbranched polyester and photopolymer material comprising same

A technology of hyperbranched polyester and photopolymer, which is applied in the direction of photosensitive materials, optics, and optomechanical equipment used in optomechanical equipment. Reduce the storage stability of the film layer and other issues, and achieve the effects of improving storage stability, avoiding adverse effects, and good solubility

Active Publication Date: 2021-02-09
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing solvent-based photopolymer film-forming agent is a linear polymer or a cross-linked polymer (the most commonly used is polyvinyl acetate PVAc), which has molecular chain entanglement and cross-linked structures. With the prolongation of the storage time of the film, the solvent in the film will gradually volatilize, the film will gradually harden, and the monomer migration will become difficult after exposure, which will lead to a decrease in the holographic performance of the film, such as the diffraction efficiency.
[0005] Hydroxyl-terminated hyperbranched polyester is a hyperbranched polyester whose end-capping group is hydroxyl. It has the structural characteristics of highly branched structure, no molecular entanglement, and a large number of cavities inside the molecule. It can reduce the viscosity of the photopolymer solution and can Improve solution compatibility and film-forming properties, but its capping group is the polar group hydroxyl-OH. On the one hand, the presence of hydroxyl groups will make the film layer absorb moisture in the air during storage and reduce the storage stability of the film layer. On the other hand, it will introduce hydrogen bonds, which will adversely affect the reaction and migration of components in the film layer

Method used

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  • Hydrocarbyl-terminated hyperbranched polyester and photopolymer material comprising same
  • Hydrocarbyl-terminated hyperbranched polyester and photopolymer material comprising same
  • Hydrocarbyl-terminated hyperbranched polyester and photopolymer material comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Synthesis of Hydrocarbyl Terminated Hyperbranched Polyester

[0045] 34.5g (hydroxyl moles n 1 =0.135mol, Mw=12000) terminal hydroxyl hyperbranched polyester and 30g triethylamine are dissolved in 70gDMF, pour in the there-necked flask, stir, then slowly drip 20g benzoyl chloride (acyl chloride group mole number) with constant pressure funnel no 2 =0.14mol), the drop rate is 6mL / h. The reaction was stirred for 10 h in a cold water bath, and nitrogen was used as a protective gas. The resulting mixture was filtered twice to remove the hydrochloride of triethylamine, and the filtrate was rotated to remove the solvent at 130° C. and -0.08 MPa. The residue is washed several times with cold n-hexane to obtain the benzyl-terminated hyperbranched polyester. The reaction equation is shown in formula (3), and the infrared spectra before and after the reaction are shown in figure 1 shown. From figure 1 It can be seen that, relative to the hydroxyl-terminated hyperbranched ...

Embodiment 2

[0053] Synthesis of Hydrocarbyl Terminated Hyperbranched Polyester

[0054] 34.5g (hydroxyl moles n 1 =0.135mol, Mw=12000) terminal hydroxyl hyperbranched polyester and 30g triethylamine are dissolved in 70gDMF, pour in the there-necked flask, stir, then slowly drip 11g acetyl chloride (acyl chloride group molar number n 2 =0.14mol), the drop rate is 6mL / h. The reaction was stirred for 10 h in a cold water bath, and nitrogen was used as a protective gas. The resulting mixture was filtered twice to remove the hydrochloride of triethylamine, and the filtrate was rotated to remove the solvent at 130° C. and -0.08 MPa. The residue is washed several times with cold n-hexane to obtain ethyl-terminated hyperbranched polyester. The reaction equation is shown in formula (4), and the infrared spectra before and after the reaction are shown in figure 2 shown.

[0055]

[0056] Preparation of photopolymer film layer

[0057] In a dark room and a safe light environment, the ph...

Embodiment 3

[0062] Synthesis of Hydrocarbyl Terminated Hyperbranched Polyester

[0063] Dissolve 34.5g (hydroxyl mole number n1=0.135mol, Mw=12000) hydroxyl-terminated hyperbranched polyester and 30g triethylamine into 70gDMF, pour it into a three-necked flask, stir, and then slowly add 42.4g dropwise with a constant pressure funnel Octadecanoyl chloride (the number of moles of acid chloride groups n2=0.14mol), the dropping rate is 6mL / h. The reaction was stirred for 10 h in a cold water bath, and nitrogen was used as a protective gas. The resulting mixture was filtered twice to remove the hydrochloride of triethylamine, and the filtrate was rotated to remove the solvent at 130° C. and -0.08 MPa. The residue is washed several times with cold n-hexane to obtain octadecyl-terminated hyperbranched polyester. The reaction equation is shown in formula (5), wherein S represents alkyl CH 3 (CH 2 ) 16 -,Such as image 3 shown.

[0064]

[0065] Preparation of photopolymer film layer ...

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Abstract

The invention relates to a hydrocarbyl-terminated hyperbranched polyester and a photopolymer material containing the same, and the hydrocarbyl-terminated hyperbranched polyester has a structure as shown in a formula (1) in the specification, wherein R is one or a combination of more of C1-C18 alkyl groups and C6-C8 aryl groups. When the hydrocarbyl-terminated hyperbranched polyester disclosed by the invention is used for a photopolymer material, the viscosity of a photopolymer system is reduced, the fluidity is improved, the storage stability of a photopolymer film layer is improved, and the diffraction efficiency of the photopolymer film layer is improved.

Description

technical field [0001] The invention relates to the field of photopolymer holographic storage materials, in particular to a hydrocarbon-terminated hyperbranched polyester and a photopolymer material containing the same. Background technique [0002] Photopolymer is a holographic storage material with broad application prospects. Generally, the composition of photopolymer materials includes film-forming agent, photosensitizer, photoinitiator, monomer and other additives. Solvent-based photopolymers refer to photopolymers obtained by preparing photopolymer photosensitive solutions with organic solvents, which have high diffraction efficiency and optical sensitivity, wide spectral response range, no wet treatment, and simple production and processing Etc. [0003] The principle of photopolymer recording information is to use two laser beams to interfere with each other to form light and dark stripes, which are irradiated on the photopolymer material. The monomers in the dark ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91G03F7/004G03F7/033
CPCC08G63/91G03F7/004G03F7/033
Inventor 李卫平李少杰陈海宁刘慧丛
Owner BEIHANG UNIV
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