A kind of preparation method of low refractive index fluorine-containing styrene dimer chain transfer agent

A styrene dimer chain and low refractive index technology, which is applied in the field of preparation of low refractive index fluorine-containing styrene dimer chain transfer agents, can solve the problem of poor molecular weight adjustment effect, poor product miscibility, and sensitive addition amount and other problems to achieve the effect of overcoming expensive

Active Publication Date: 2022-04-19
中昊北方涂料工业研究设计院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing conventional chain transfer agent will have a greater impact on the refractive index of the resin while improving the molecular weight of the product due to its own molecular structure. Therefore, it is necessary to develop a chain transfer agent that can be used for low refractive index fluorine-containing resins. In the process of resin synthesis, it is ensured that the molecular weight of the resin will not be greatly affected by its refractive index.
[0003] At present, there are two main methods to solve this problem. One is to reduce the amount of chain transfer agent added to the synthetic resin so that it can minimize the impact on the refractive index of the product. However, the chain transfer agent itself is more sensitive to the amount added. , reducing the addition will make its adjustment effect on the molecular weight worse and thus affect the performance of the product resin; the second is to add fluorine-containing acrylic acid monomer after synthesis to adjust the refractive index increased by the addition of chain transfer agent, but this method will also affect the performance of the product resin. Resin viscosity, physical properties, etc. have a great influence, and most fluorine-containing acrylic monomers are expensive and have poor miscibility with products

Method used

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  • A kind of preparation method of low refractive index fluorine-containing styrene dimer chain transfer agent
  • A kind of preparation method of low refractive index fluorine-containing styrene dimer chain transfer agent

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Preparation of fluorine-containing styrene dimer chain transfer agent: Add 40g of styrene dimer and 100g of butyl acetate into the reactor, heat up and stir, raise the temperature to 121°C and keep it for 0.5h, add benzoyl peroxide, drop Add 20gG01, drop it for 3 hours, keep it warm for 3 hours, lower the temperature to 70°C, and vacuum it for 1 hour, the vacuum pressure is 0.06Mpa-0.07Mpa, and the material is discharged to obtain the fluorine-containing styrene dimer chain transfer agent number Y-1.

Embodiment 2

[0024] Preparation of fluorine-containing styrene dimer chain transfer agent: Add 60g of styrene dimer and 100g of butyl acetate into the reactor, heat up and stir, raise the temperature to 121°C and keep it for 0.5h, add benzoyl peroxide, drop Add 20gG03, drop it for 3 hours, keep it warm for 3 hours, lower the temperature to 70°C, reduce the pressure and vacuum for 1 hour, the vacuum pressure is 0.06Mpa-0.07Mpa, and the material is discharged to obtain the fluorine-containing styrene dimer chain transfer agent number Y-2.

Embodiment 3

[0026] Preparation of fluorine-containing styrene dimer chain transfer agent: add 55g styrene dimer and 100g butyl acetate into the reactor, heat up and stir, raise the temperature to 121°C and keep it for 0.5h, add benzoyl peroxide, drop Add 35gG01, drop it for 3 hours, keep it warm for 3 hours, lower the temperature to 70°C, reduce the pressure and vacuum for 1 hour, the vacuum pressure is 0.06Mpa-0.07Mpa, and the material is discharged to obtain the fluorine-containing styrene dimer chain transfer agent number Y-3.

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Abstract

The invention belongs to the technical field of chemical paint preparation, and in particular relates to a preparation method of a low-refractive-index fluorine-containing styrene dimer chain transfer agent. A low refractive index fluorine-containing acrylic resin includes: fluorine-containing styrene dimer chain transfer agent; fluorine-containing acrylate is one of G01, G02, and G06c; fluorine-containing acrylate monomer; acrylic acid; solvent A, solvent A is butyl acetate; Catalyst A, catalyst A is benzoyl peroxide; In the described fluorine-containing styrene dimer chain transfer agent, include: styrene dimer; Fluorine-containing acrylate, fluorine-containing acrylate is G03, a kind of in G01; Solvent A, solvent A is butyl acetate, catalyst A, catalyst A is benzoyl peroxide. A low-refractive-index fluorine-containing styrene dimer chain transfer agent, which has the function of conventional chain transfer agents to adjust the molecular weight of the resin, and has a lower refractive index, and has little impact on the refractive index of the product after being added into the synthesis.

Description

technical field [0001] The invention belongs to the technical field of chemical paint preparation, and in particular relates to a preparation method of a low-refractive-index fluorine-containing styrene dimer chain transfer agent. Background technique [0002] At present, in the synthesis of some fluorine-containing acrylic resins that are sensitive to low refractive index requirements, some conventional chain transfer agents are generally added to adjust the molecular weight of the resin to achieve certain physical properties. The existing conventional chain transfer agent will have a greater impact on the refractive index of the resin while improving the molecular weight of the product due to its own molecular structure. Therefore, it is necessary to develop a chain transfer agent that can be used for low refractive index fluorine-containing resins. During the resin synthesis process, it is ensured that the refractive index of the resin will not be greatly affected while a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F2/38C08F220/22C08F220/06C07C67/347C07C69/618
CPCC08F2/38C08F220/22C07C67/347C07C69/618C08F220/06
Inventor 沙伟华王国志刘文兴
Owner 中昊北方涂料工业研究设计院有限公司
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