Carboxylic butadiene-styrene latex and preparation technology thereof

A carboxylated styrene-butadiene latex and a preparation process technology, applied in the field of carboxylated styrene-butadiene latex synthesis, can solve the problems of carboxylated styrene-butadiene latex polymerization stability, poor mechanical stability and chemical stability, insufficient polymerization of butadiene and styrene, and reduction of carboxyl groups Problems such as the conversion rate of styrene-butadiene latex, to achieve the effects of not being easy to form agglomerates, short reaction time, and preventing air bubbles

Inactive Publication Date: 2018-04-20
杭州龙驹合成材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the carboxylated styrene-butadiene latex prepared by the prior art has good mechanical stability and chemical stability, the prior art has disadvantages in that, first of all, mercaptan is used in the preparation process, and the odor is relatively heavy , affecting the production environment and the surrounding living environment of the enterprise; secondly, in the preparation process, the existing technology chooses to directly drop butadiene, styrene, mercaptan and other components, which will easily lead to the polymerization of butadiene and styrene Insufficient, thereby reducing the conversion ratio of carboxylated styrene-butadiene latex, and causing poor polymerization stability, mechanical stability and chemical stability of the obtained carboxylated styrene-butadiene latex

Method used

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  • Carboxylic butadiene-styrene latex and preparation technology thereof
  • Carboxylic butadiene-styrene latex and preparation technology thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0088] Embodiment 1: A kind of carboxylated styrene-butadiene latex, wherein the components included are as shown in Table 1, and are prepared through the following steps:

[0089] S1, under vacuum conditions, uniformly mix the first solvent, sodium stearate, acrylic acid, N-methylol acrylamide, acrylamide, and pH regulator in the corresponding weight fraction of the water phase material to form the water phase material;

[0090] S2, under vacuum conditions, the corresponding weight fractions of styrene, butadiene, and ethyl 3-mercaptobutyrate in the oil phase material are mixed uniformly to form the oil phase material;

[0091] S3, mixing the mbs seed latex, sodium dodecylbenzene sulfonate, and liquid caustic soda mixture of the corresponding weight fraction in the primer to form a primer;

[0092] S4, under vacuum conditions, take the fourth solvent in other materials, 260 parts of the water phase material obtained in the step S1, 555 parts of the oil phase material obtained...

Embodiment 2-5

[0097] Example 2-5: A carboxylated styrene-butadiene latex, the difference from Example 1 is that the components included in it are shown in Table 1.

[0098] Components and their corresponding parts by weight in Table 1 Embodiment 1-5

[0099]

Embodiment 6

[0100] Embodiment 6: a kind of carboxylated styrene-butadiene latex, the difference with embodiment 1 is, among other materials, the initiator mixture comprises the initiator and soft water that the ratio of parts by weight is 0.08:1, and the initiator is ammonium persulfate.

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PUM

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Abstract

The invention discloses carboxylic butadiene-styrene latex and a preparation technology thereof. The carboxylic butadiene-styrene latex is prepared from water phase materials, oil phase materials, priming materials, and other materials, wherein the water phase materials comprise a first solvent, a first emulsifier, acrylic acid, N-hydroxymethyl acrylamide, acrylamide and a pH (potential of hydrogen) regulator; the oil phase materials comprise styrene, butadiene and ethyl 3-mercaptobutyrate; the priming materials comprise mbs seed latex, sodium dodecyl benzene sulfonate, and a liquid alkaline mixture; the other materials comprise a fourth solvent, ethylenediaminetetraacetic acid disodium salt, an initiator mixture, a water-based defoamer, liquid alkaline, and a second emulsifier; the firstemulsifier selects an anion emulsifier; the second emulsifier selects a non-ionic emulsifier; the first solvent and the fourth solvent are respectively soft water. The prepared carboxylic butadiene-styrene latex has the advantages that the conversion rate is high, and the polymerizing stability, mechanical stability and chemical stability are good.

Description

technical field [0001] The invention relates to the technical field of carboxylated styrene-butadiene latex synthesis, more specifically, it relates to a carboxylated styrene-butadiene latex and a preparation process thereof. Background technique [0002] Carboxylated styrene-butadiene latex is a copolymer produced by emulsion polymerization of butadiene, styrene, a small amount of carboxylic acid and other additives. It is a milky white water dispersion with blue-purple luster. [0003] The application publication number is CN 104211858 A, and the Chinese patent application publication date is December 17, 2014 discloses a carboxylated styrene-butadiene latex, which is composed of styrene, butadiene, acrylic acid, seed glue, emulsifier, functional monomer, Sodium pyrophosphate, mercaptan, chelating agent ammonium persulfate and other components; ~40% of acrylic acid, sodium pyrophosphate, functional monomer, seed glue and chelating agent; (2) after heating up to 83~94°C, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F236/10C08F220/06C08F220/56C08F220/58C08F2/26C08F2/30C08K5/372
CPCC08F2/26C08F2/30C08F212/08C08K5/372C08F236/10C08F220/06C08F220/56C08F220/58
Inventor 李卫生季永忠刘培元
Owner 杭州龙驹合成材料有限公司
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