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Process for preparing SBS aqueous emulsion

The technology of water emulsion and emulsifier is applied in the field of preparation of SBS water emulsion to achieve the effect of soft hand feeling, good compatibility and good calendering effect

Inactive Publication Date: 2005-11-30
BALING PETRO CHEM CO LTD SINOPEC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, SBS cannot be produced by emulsion polymerization, but it is required to be used in emulsion form for convenience

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In a 10L stainless steel reactor with stirring, add 20 parts of SBSM solution (in terms of SBSM mass), start stirring, first stir at a low speed, and slowly add 80 parts of water (containing 1.0 wt% sodium dodecylbenzenesulfonate in water) , 0.25wt% polyoxyethylene octylphenol ether with an ethylene oxide addition number of 10, 0.25wt% potassium chloride, and 0.2wt% defoamer CRA), at a temperature of 30-60°C, stirring at a high speed for 30min, and then At 60°C, the organic solvent was removed in vacuo. The mechanical stability of the obtained emulsion was measured by the SH / T1151-92 method, and the coagulum content was 3%.

Embodiment 2

[0027] In a 10L stainless steel reactor with stirring, add 30 parts of SBSM solution (in terms of SBSM mass), start stirring, stir at a low speed first, and slowly add 70 parts of water (water contains 0.8 wt% of ammonium oleate, ethylene oxide 0.25wt% of polyoxyethylene octylphenol ether with an addition number of 10, 0.25wt% of potassium chloride, and 0.2wt% of defoaming agent CRA), at a temperature of 30-60°C, high-speed stirring for 30min, at 60°C, pumping The organic solvent was removed in vacuo. The mechanical stability of the obtained emulsion was measured by the SH / T1151-92 method, and the coagulum content was 3%.

Embodiment 3

[0029] In a 10L stainless steel reactor with stirring, add 60 parts of SBSM solution (in terms of SBSM mass), start stirring, first stir at a low speed, and slowly add 40 parts of water (containing 2.5 wt% sodium dodecylbenzenesulfonate in water) , polyoxyethylene octylphenol ether with an ethylene oxide addition number of 10 1.0wt%, potassium chloride 0.8wt%, defoamer CRA 0.5wt%), temperature at 30-60°C, high-speed stirring for 30min, in At 60°C, the organic solvent was removed by vacuum. The mechanical stability of the obtained emulsion was measured by the SH / T1151-92 method, and the coagulum content was 4%.

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PUM

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Abstract

The SBS water emulsion is prepared with SBSM 20-60 wt%, non-ionic emulsifier 0.2-0.5 wt%, ionic emulsifier 0.5-1.0 wt%, electrolyte 0.2-0.4 wt% and defoaming agent 0.1-0.3 except water. The preparation process includes dissolving polarized SBS (SBSM) in organic solvent; adding water solution of emulsifier, defoaming agent and electrolyte slowly under stirring of 3000-5000 rpm to obtain O / W type emulsion; stirring in raised rotation speed of 8000-10000 rpm to crush the particles to under 1 micron; heating and decompressing to eliminate solvent via pumping to obtain stable SBS water emulsion. The SBS water emulsion has small particle size, high stability, solidified matter content of 1-4 %, good compatibility with stuffing and has high stuffing capacity.

Description

technical field [0001] The invention relates to a preparation method of SBS water emulsion. Background technique [0002] In many cases, SBS can be processed into required parts and products by extrusion, calendering, blow molding, etc., and in other cases, it can also be used in the form of SBS solution or emulsion. Using SBS solution will bring many disadvantages. Most organic solvents are flammable, explosive, toxic, and odorous. The harsh working conditions at the construction site will cause environmental pollution and harm to the human body. Use is strictly limited. At the same time, organic solvents are usually expensive and costly, which hinders the further development and application of SBS solution products. The use of SBS water emulsion has many advantages. Water is the cheapest medium, there is no danger of burning, explosion and poisoning, the working conditions at the construction site are superior, there is no danger to the human body, and it will not caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/03C08L51/06
Inventor 熊远凡夏金魁许安军肖哲
Owner BALING PETRO CHEM CO LTD SINOPEC
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