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Preparation process of modified carboxylic butadiene-styrene latex

A carboxylated styrene-butadiene latex and preparation technology, applied in sustainable manufacturing/processing, chemical industry, climate sustainability, etc., can solve problems such as poor stirring efficiency, difficulty in mixing, and excessive air bubbles, so as to improve work efficiency and Work effect, avoid air bubbles, improve the effect of yield

Active Publication Date: 2022-08-02
日照锦湖金马化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the above-mentioned patents are in use, there are many deficiencies. First, the carboxylated styrene-butadiene latex in the above-mentioned patents will produce a large number of bubbles during the stirring process, and the carboxylated styrene-butadiene latex The viscosity of the carboxylated styrene-butadiene latex is relatively large, and it is difficult for the bubbles to separate from the carboxylated styrene-butadiene latex independently, which will cause the volume of the carboxylated styrene-butadiene latex to expand. When stirring work, there will be a large amount of air between the carboxylated styrene-butadiene latex, and too many bubbles will be generated. When the latex is stirred, the carboxylated styrene-butadiene latex is rotated by the L-shaped stirring body and the vertical stirring blade, and the latex rotates with the L-shaped stirring body and the vertical stirring blade, and the stirring efficiency is poor.

Method used

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  • Preparation process of modified carboxylic butadiene-styrene latex
  • Preparation process of modified carboxylic butadiene-styrene latex
  • Preparation process of modified carboxylic butadiene-styrene latex

Examples

Experimental program
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Effect test

Embodiment 1

[0043] A preparation technology of modified carboxylated styrene-butadiene latex, comprising the steps:

[0044] S1, in parts by weight, add 100 parts of carboxylated styrene-butadiene latex, 2 parts of modifiers, 5 parts of sodium lignosulfonate in stirring equipment and stir to form the first polymer;

[0045] S2, add 20 parts of ethylene glycol, stir and react to form the second polymer;

[0046] S3, vaporizing the second polymer through a degassing vessel to form a third polymer;

[0047] S4, packing and discharging the third polymer;

[0048] In S1, an inert gas is also introduced, and the inert gas is nitrogen.

[0049] The modifier is benzoyl peroxide.

Embodiment 2

[0051] A preparation technology of modified carboxylated styrene-butadiene latex, comprising the steps:

[0052] S1, in parts by weight, add 100 parts of carboxylated styrene-butadiene latex, 5 parts of modifiers, 5 parts of sodium lignosulfonate in stirring equipment and stir to form the first polymer;

[0053] S2, add 50 parts of ethylene glycol, stir and react to form the second polymer;

[0054] S3, vaporizing the second polymer through a degassing vessel to form a third polymer;

[0055] S4, packing and discharging the third polymer;

[0056] In S1, an inert gas is also introduced, and the inert gas is nitrogen.

[0057] The modifier is benzoyl peroxide.

Embodiment 3

[0059] A preparation technology of modified carboxylated styrene-butadiene latex, comprising the steps:

[0060] S1, in parts by weight, add 100 parts of carboxylated styrene-butadiene latex, 3.5 parts of modifiers, 4 parts of sodium lignosulfonate in stirring equipment and stir to form the first polymer;

[0061] S2, add 35 parts of ethylene glycol, stir and react to form the second polymer;

[0062] S3, vaporizing the second polymer through a degassing vessel to form a third polymer;

[0063] S4, packing and discharging the third polymer;

[0064] In S1, an inert gas is also introduced, and the inert gas is nitrogen.

[0065] The modifier is benzoyl peroxide.

[0066] refer to Figure 1 to Figure 10 As shown, the stirring device provided in the embodiment of the present invention includes a stirring drum 1, a support frame 11, a driving mechanism 2, a multiple mixing mechanism 3, a defoaming mechanism 4, a lifting mechanism 6, an extrusion mechanism 7 and a rotating mech...

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Abstract

The invention discloses a preparation process of modified carboxylic butadiene-styrene latex, and belongs to the technical field of chemical engineering, and the preparation process comprises the following steps: S1, adding 100 parts by weight of carboxylic butadiene-styrene latex, 2-5 parts by weight of a modifier and 3-5 parts by weight of sodium lignin sulfonate into stirring equipment, and stirring to form a first polymer; s2, adding 20-50 parts of ethylene glycol, and stirring for reaction to form a second polymer; s3, performing water vapor evaporation on the second polymer through a degassing container to form a third polymer; s4, packaging and discharging the third polymer; the stirring equipment comprises a stirring barrel, a supporting frame, a driving mechanism, a multi-mixing mechanism, a defoaming mechanism, a lifting mechanism, an extruding mechanism and a rotating mechanism, and the stirring barrel is installed on the supporting frame. The lifting mechanism can drive the extruding mechanism to operate, and the rotating mechanism can discharge extruded latex.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a preparation process of a modified carboxylated styrene-butadiene latex. Background technique [0002] Carboxylated styrene-butadiene latex is a copolymer formed by emulsion polymerization of butadiene, styrene and a small amount of carboxylic acid and other additives. It is a milky white water dispersion with a blue-violet luster. It has the advantages of high adhesive force and conjunctival strength, good mechanical and chemical stability, good fluidity and storage stability, and large filling amount. The residual benzene monomer is very small, and it is an environmentally friendly product. [0003] The existing Chinese patent with publication number CN109200976A discloses a stirring device for producing carboxylated styrene-butadiene latex. The invention relates to a stirring device for producing carboxylated styrene-butadiene latex, comprising a main shaft and a st...

Claims

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Application Information

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IPC IPC(8): C08L13/02C08L97/00C08K5/053C08K5/14C08G81/02B01F33/80
CPCC08L13/02C08G81/02B01F33/80C08L97/005C08K5/053C08K5/14Y02P20/10
Inventor 李江年
Owner 日照锦湖金马化学有限公司
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