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Production method of artificial latex

A production method and technology of artificial latex, which is applied in the field of artificial latex, can solve problems such as excessive foaming, and achieve the effects of excellent physical properties, controllable structure, and high cis content

Active Publication Date: 2012-10-03
盘锦信汇新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has improved the stability of the latex, but the problem of more foam has not been resolved

Method used

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  • Production method of artificial latex

Examples

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example 1

[0021] Weigh 20g of isoprene rubber and dissolve it in 180g of cyclohexane to prepare a 10 wt% rubber solution; dissolve 0.80g of sodium lauryl sulfate, 0.15g of Span 80 and 0.05g of potassium polyacrylate in 150g of deionized water and use Potassium hydroxide is used to adjust the pH value within the range of 9 to 13; the rubber solution and emulsifier aqueous solution are poured into a round-bottomed flask for strong mechanical stirring to form a macroscopically homogeneous mixed solution. The pre-emulsified emulsion was first emulsified with a high-speed emulsifier at a line speed of 10m / s for 5 minutes, and then emulsified at a line speed of 16m / s for 10 minutes, then left to stand for 3 hours and then filtered to remove the floating matter in the upper layer. Distill the emulsified emulsion at 30-90°C under atmospheric pressure, wait until 80% (most) of the solvent is removed, and then carry out vacuum distillation at a temperature of 30-90°C and a pressure of -0.01- -0.1M...

example 2

[0023] First take 18-20 kg of butadiene rubber and dissolve it in 180-190 kg of benzene to prepare a rubber solution; 0.2-3.2 kg of sodium dodecylsulfonate and sodium oleate as anionic emulsifiers account for half of each Mix in a ratio of 1, dissolve 0.1-2.8 kg of polyoxyethylene (20) sorbitan monostearate (Tween60) as a non-ionic emulsifier and 0.05-2.4 kg of potassium polyacrylate as a polymer emulsifier in 150-160 kg of deionized water and adjust the pH value to 9-13 with potassium hydroxide to make an aqueous emulsifier solution; pour the above-mentioned rubber solution and emulsifier aqueous solution at a ratio of 1:0.5-2.0 parts by weight at the same time and stir Perform strong mechanical stirring in the device to form a macroscopically homogeneous pre-emulsified mixed solution; the pre-emulsified emulsion is first emulsified with a high-speed emulsifier at a line speed of 10m / s for 5 minutes, and then emulsified with a line speed of 16m / s for 10 minutes, and then stati...

example 3

[0025] Dissolve 18-20 kg of isoprene rubber in 180-190 kg of cyclohexane to prepare a rubber solution; add 0.2-3.2 kg of sodium dodecylsulfonate and dodecylbenzenesulfonate as an anionic emulsifier Sodium abietate and potassium disproportionated abietate accounted for one-third of each, mixed with 0.1-2.8 kg of polyoxyethylene (8) octyl phenyl ether (Triton X-100) as a non-ionic emulsifier and 0.05- Dissolve 2.4 kg of potassium polyacrylate as a polymer emulsifier in 150-160 kg of deionized water and adjust the pH value to 9-13 with potassium hydroxide to make an aqueous emulsifier solution; mix the above rubber solution and emulsifier aqueous solution with 1 : 0.5 to 2.0 parts by weight and pour into the mixer for strong mechanical stirring to form a macroscopically homogeneous pre-emulsified mixture; the pre-emulsified emulsion is first emulsified with a high-speed emulsifier at a line speed of 10m / s for 5 minutes, and then Emulsify with a linear speed of 16m / s for 10 minutes,...

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Abstract

The invention discloses a production method of artificial latex. The method comprises the following steps of: dissolving a certain amount of isoprene rubber or butadiene rubber into cyclane or aliphatic hydrocarbon to prepare a rubber solution, dissolving a certain amount of anionic emulsifier, nonionic emulsifier and high molecular emulsifier into deionized water, and adjusting the pH value to 9-13 to obtain an emulsifier aqueous solution; mixing a certain amount of rubber solution and emulsifier aqueous solution, and stirring forcibly to form a macroscopic homogeneous pre-emulsified mixed solution; emulsifying an emulsifier emulsion with an emulsifying machine at the linear speed of 10m / s, emulsifying at the linear speed of 16m / s, standing, and filtering upper layer floating matters out; distilling the emulsified emulsion under the normal pressure, and distilling under reduced pressure after a part of solvents are removed till all solvents are removed; and after the temperature of latex to be diluted falls to the room temperature, and centrifuging under the condition of 8,000r / min with a centrifuge to obtain latex of which the solid content is 65-68 percent and the particle diameter is 400 nanometers.

Description

technical field [0001] The invention belongs to the field of organic chemical preparation, and in particular relates to a production method for producing artificial latex by using an emulsifier compound system. Background technique [0002] Polyisoprene latex refers to a stable colloidal dispersion system formed by dispersing synthetic polyisoprene particles in an aqueous medium. Synthetic polyisoprene and natural rubber are almost identical in molecular structure, and their physical properties are close to those of natural rubber; the performance of polyisoprene latex is also similar to that of natural latex. Natural rubber latex comes from rubber trees, and its main components are rubber hydrocarbons and water, and also contains non-rubber components such as proteins, lipid compounds, and enzymes. Polyisoprene latex does not contain non-rubber components, has higher purity, uniform quality, and does not cause protein allergies. It is suitable for the manufacture of produc...

Claims

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Application Information

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IPC IPC(8): C08C1/12C08C1/02C08L9/10
Inventor 张函陶俊裴素明苗丽娜武小华赵敏孙育成
Owner 盘锦信汇新材料有限公司
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