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Vinyl acetate-vinyl versatate polymer emulsion as well as preparation and application thereof

A technology of vinyl tertiary carbonate and vinyl acetate is applied to vinyl acetate-vinyl tertiary carbonate polymer emulsion and its preparation and application fields, and achieves the effects of less emulsifier dosage, good balance performance and excellent performance

Active Publication Date: 2018-06-22
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Compared with other monomers, domestic studies on the emulsion reaction involving vinyl tertiary carbonate are less, and most of them use anionic surfactants and nonionic surfactants as emulsifiers, and cationic emulsifiers to prepare vinyl acetate and vinyl tertiary carbonate

Method used

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  • Vinyl acetate-vinyl versatate polymer emulsion as well as preparation and application thereof
  • Vinyl acetate-vinyl versatate polymer emulsion as well as preparation and application thereof
  • Vinyl acetate-vinyl versatate polymer emulsion as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Formulation:

[0028] Surfactant (hexadecyltrimethylammonium bromide) 0.6%, vinyl acetate monomer 19.3%, vinyl tert-carbonate monomer 8.3%, functional monomer (hexafluorobutyl methacrylate and vinyl Triethoxysilane (1:0.6) 2.4%, initiator (azobisisobutylamidine hydrochloride V50) 0.12%, the balance is deionized water, and the total amount of each component is 100%.

[0029] (2) Preparation method:

[0030] In a 250mL four-necked flask equipped with a stirrer, a reflux condenser, and a dropping funnel, add 0.6g of cetyltrimethylammonium bromide and 39.4g of deionized water, stir and raise the temperature to 65°C in a water bath. Add 3.0 g of mixed monomers and 3.0 g of V50 aqueous solution dropwise within 15 minutes, and continue to keep warm for 30 minutes after the dropwise addition to prepare the seed emulsion. Then the remaining 27.0g V50 aqueous solution and 27.0g mixed monomer were added dropwise to the four-necked flask at a constant speed within 2.0h. The ...

Embodiment 2

[0036] (1) Formulation:

[0037] Surfactant (hexadecyltrimethylammonium bromide and nonylphenol polyoxyethylene ether 2:1) 0.6%, vinyl acetate monomer 22.5%, vinyl tertiary carbonate monomer 7.5%, initiator V500. 09%, functional monomer (hexafluorobutyl methacrylate) 1.5%, the balance is deionized water, and the total amount of each component is 100%.

[0038] (2) Preparation method:

[0039] In a 250mL four-necked flask equipped with a stirrer, a reflux condenser, and a dropping funnel, add 0.4g of cetyltrimethylammonium bromide and 0.2g of nonylphenol polyoxyethylene ether (OP-10) and 39.4g of deionized water, stirred and heated to 65°C in a water bath. Add 3.0 g of mixed monomer and 3.0 g of V50 aqueous solution dropwise within 15 minutes respectively, and continue to keep warm for 15 minutes after the dropwise addition is completed. Then the remaining 27.0g of V50 aqueous solution and 27.0g of mixed monomers were added dropwise into the four-neck flask within 2.0h. Afte...

Embodiment 3

[0044] (1) Formulation:

[0045] Surfactant (cetyl trimethyl ammonium bromide, dodecyl dimethyl benzyl ammonium chloride and nonylphenol ethoxylate 6:1.5:1) 1.7%, vinyl acetate monomer 18.3 %, vinyl tert-carbonate monomer 9.9%, functional monomer (hexafluorobutyl methacrylate and vinyl triethoxysilane 1:1) 1.8%, initiator V50 0.12%, the balance is deionized water , the total amount of each component is 100%.

[0046] (2) Preparation method:

[0047] In a 250mL four-necked flask equipped with a stirrer, a reflux condenser, and a dropping funnel, add 1.2g of cetyltrimethylammonium bromide, 0.3g of dodecyldimethylbenzylammonium chloride and 0.2g of nonylphenol polyoxyethylene ether and 38.3g of deionized water, stirred and heated to 65°C in a water bath, added dropwise 3.0g of mixed monomer and 3.0g of V50 aqueous solution within 15 minutes, and continued to keep warm for 15 minutes after the dropwise addition. Then the remaining 27.0 g of mixed monomer and 27.0 g of V50 aqueo...

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Abstract

The invention provides vinyl acetate-vinyl versatate polymer emulsion as well as preparation and application thereof. The emulsion is prepared from the following raw materials in percentage by mass: 0.4 to 2.0 percent of surfactant, 18.3 to 21.4 percent of vinyl acetate monomer, 5.4 to 10.1 percent of vinyl versatate monomer, 1.2 to 4 percent of functional monomer, 0.09 to 0.24 percent of initiator and the balance of deionized water, wherein the total amount of the components is 100 percent. The emulsion has exquisite appearance and has semi-transparent blue fluorescence, the pH value is 7+ / -0.5, the solid content is 30+ / -3 percent, the grain size of the emulsion is 50 to 80 nm, and the polymer emulsion has excellent comprehensive performance at the reaction temperature of 65 DEG C and heat-insulating temperature of 85 DEG C. The obtained nanometer polymer emulsion has the characteristics of small grain size, small emulsifier content and the like. After the nanometer emulsion forms a film, the latex film has excellent weather resistance, chemical resistance, high-temperature resistance, alkali resistance, ultraviolet resistance and the like.

Description

(1) Technical field [0001] The invention relates to a method for preparing fluorine-containing and silicon-crosslinked vinyl acetate-vinyl tert-carbonate nanopolymer emulsions from cationic surfactants and nonionic surfactants. The polymer emulsions can be used for architectural coatings, dyes, sewage treatment, and flocculation as well as textile and leather finishing agents. (2) Background technology [0002] The cationic polymer emulsion refers to a polymer emulsion in which monomers of the formed polymer are positively charged or the emulsifier participating in the reaction is positively charged. Due to its own positive charge, it is more firmly combined with the negatively charged substrate, the treatment effect is better and more durable, and the washing resistance is better, and it also has strong sterilization, anti-corrosion and anti-static effects. In some areas where it is difficult to use ionic emulsions, the advantages of cationic emulsions are more prominent, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F218/08C08F218/10C08F220/22C08F230/08C08F2/28C08F2/30C09D131/04C09D5/16
CPCC08F2/28C08F2/30C08F218/08C09D5/1637C09D5/1668C09D131/04C09D143/04C08F218/10C08F220/22C08F230/08
Inventor 陈立军戴欧阳汪秀明张信陈大为
Owner ZHEJIANG UNIV OF TECH
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