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Scratch-resistant butylbenzene resin and preparation method thereof

A technology of styrene-butadiene resin and butadiene, which is applied in the field of finger-scratch-resistant styrene-butadiene resin and its preparation, can solve the problems that it is difficult to meet the demand of finger-scratch-resistant styrene-butadiene resin, poor friction, easy to produce scratches, etc. Rigidity , to achieve the effect of improving rigidity, reducing internal friction and increasing smoothness

Active Publication Date: 2022-03-01
广东众和高新科技股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the styrene-butadiene resin obtained in this patent still has the problems of poor friction, easy scratches and weak rigidity when used, which shows that it is difficult to meet the required resistance of the styrene-butadiene resin only from the perspective of physical modification. Refers to sexual needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A preparation method of scratch-resistant styrene-butadiene resin, said preparation method comprising the steps of:

[0055] (1) In a 10L stainless steel reactor with a stirring paddle, add 4.5L of cyclohexane and n-hexane with a mass ratio of 8:2, then add 0.9g of THF and 0.45g of DTHFP to obtain a compound solvent;

[0056] (2) Add 6.75g of n-butyllithium and 900g of styrene monomer to the compound solvent obtained in step (1) to react at 45°C. After all the styrene monomers have reacted, polystyrene segments are obtained ;

[0057] (3) Add 75g of butadiene monomer to the styrene segment obtained in step (2), control the termination temperature to be 65°C to complete the reaction, then add 0.12g of tert-butyllithium potassium and 120g of pre-mixed benzene Continue the reaction between ethylene monomer and 75g of butadiene mixture, and control the final reaction temperature at 68°C to obtain styrene / butadiene random copolymerization segments;

[0058] (4) Add 225g of...

Embodiment 2

[0061] A preparation method of scratch-resistant styrene-butadiene resin, said preparation method comprising the steps of:

[0062] (1) In a 10L stainless steel reactor with a stirring paddle, add 4.5L of cyclohexane and n-hexane with a mass ratio of 9:1, then add 0.9g of THF and 0.45g of DTHFP to obtain a compound solvent;

[0063] (2) Add 6.75g of n-butyllithium and 900g of styrene monomer to the compound solvent obtained in step (1) to react at 45°C. After all the styrene monomers have reacted, polystyrene segments are obtained;

[0064] (3) Add 60g of butadiene monomer to the styrene segment obtained in step (2), control the termination temperature to be 65°C to complete the reaction, then add 0.12g of tert-butyl lithium potassium, 120g of pre-mixed benzene Continue the reaction between ethylene monomer and 90g of butadiene mixed solution, and control the final reaction temperature at 68°C to obtain styrene / butadiene random copolymerization segments;

[0065] (4) Add the ...

Embodiment 3

[0068] A preparation method of scratch-resistant styrene-butadiene resin, said preparation method comprising the steps of:

[0069] (1) In a 10L stainless steel reactor with a stirring paddle, add 4.5L of cyclohexane and n-hexane with a mass ratio of 8:2, then add 0.9g of THF and 0.45g of DTHFP to obtain a compound solvent;

[0070] (2) Add 6.75g of n-butyllithium and 900g of styrene monomer to the compound solvent obtained in step (1) to react at 45°C. After all the styrene monomers have reacted, polystyrene segments are obtained;

[0071] (3) Add 75g of butadiene monomer to the styrene segment obtained in step (2), control the termination temperature to be 65°C to complete the reaction, then add 0.12g of tert-butyl lithium potassium, 120g of pre-mixed benzene Continue the reaction between ethylene monomer and 75g of butadiene mixture, and control the final reaction temperature at 68°C to obtain styrene / butadiene random copolymerization segments;

[0072] (4) Add the butadie...

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Abstract

The invention provides scratch-resistant butylbenzene resin and a preparation method thereof.The preparation method comprises the steps that firstly, a styrene monomer and an initiator are subjected to a reaction to obtain a polystyrene chain segment, then the polystyrene chain segment, a random regulator and a mixture of the styrene monomer and a butadiene monomer are subjected to a reaction, and the scratch-resistant butylbenzene resin is obtained. The styrene / butadiene random copolymerization chain segment and the butadiene monomer are subjected to a block reaction to obtain the styrene / butadiene block copolymerization chain segment, so that the side chain content of the styrene-butadiene resin is increased, the rigidity of the styrene-butadiene resin is enhanced, and finally, the lubricant is added in a matched manner, so that the rigidity of the styrene-butadiene resin is improved. The surface smoothness of the styrene-butadiene resin product is improved, the internal friction of the material is reduced, the probability that the styrene-butadiene resin product is scratched by the outside is further effectively reduced, and the styrene-butadiene resin has excellent finger scraping resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and in particular relates to a scratch-resistant styrene-butadiene resin and a preparation method thereof. Background technique [0002] The environmental protection, transparency and impact resistance of styrene-butadiene resin products are unmatched by most plastic products, but its finger-scratch resistance is relatively insufficient compared with many high-rigidity or high-toughness materials. Styrene resin products are often scratched by external impact, touch or finger scratches, which will affect the wide promotion of styrene-butadiene resin products in the fields of equipment panels, reagent bottles, display racks and electronic packaging. [0003] At present, in order to improve its scratch resistance and rigidity, it is often subjected to physical modification treatment, such as adding a lubricant to the styrene-butadiene resin masterbatch. CN106046461A discloses a kind of re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F297/00C08F297/04C08K5/20
CPCC08F297/00C08F297/044C08K5/20Y02T10/86
Inventor 黎广贞王平张海涛廖伟超李才亮舒畅吴国波刘君李林峰刘敏谢高嘉柏木兰
Owner 广东众和高新科技股份公司