Polyacrylate emulsion with high water resistance and preparation method thereof

A technology of polyacrylate emulsion and butyl acrylate, which is applied in the field of high water resistance polyacrylate emulsion and its preparation, can solve the problems that water resistance cannot be greatly improved, and achieve reduced emulsifier dosage, uniform particle size distribution, conducive to stabilizing effect

Inactive Publication Date: 2009-09-09
SHANGHAI APPLIED TECHNOLOGIES COLLEGE
View PDF0 Cites 35 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Acrylic emulsions have been developed and produced at home and abroad, but due to the traditional preparation method of polyacrylate emulsions, in order to endow acrylic emulsions with better performance, a small amount of functional monomers are usually introduced into the copolymerization formula to for

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0038] The preparation method of the above-mentioned high water resistance polyacrylate emulsion includes the following steps (the following are all parts by weight):

[0039] a. Pre-emulsification

[0040] Combine 60-80% of the total amount of 50-100 parts of deionized water with 0.5-2 parts of reactive emulsifier, 1-10 parts of isooctyl acrylate, 15-40 parts of butyl acrylate, and 10-45 parts Part of methyl methacrylate, 3 to 5 parts of methacrylic acid, and 2 to 8 parts of epoxy functional monomer are added to the emulsifying kettle, and high-speed stirring is started for pre-emulsification, and the time is controlled within 10 to 30 minutes;

[0041] b. Seed aggregation

[0042] Add the remaining 20-40% deionized water and 0.1-0.3 parts of non-ionic emulsifier OP to the reaction kettle. Start heating under stirring. When the temperature reaches 60°C, add a total of 0.1-0.4 parts of initiator. 20-50% of the ammonium sulfate, ammonium persulfate is added as an aqueous solution. ...

Example Embodiment

[0045] Example 1

[0046] Mix 70 grams of deionized water, 1.2 grams of allyl polyoxyethylene ether ammonium sulfate, 8 grams of isooctyl acrylate, 38 grams of butyl acrylate, 10 grams of methyl methacrylate, 5 grams of methacrylic acid, 3 grams of methyl All the glycidyl acrylate is added to the emulsification kettle, and high-speed stirring (2000 rpm) is started for pre-emulsification, and the time is controlled at 10 minutes.

[0047] In a four-necked flask equipped with an electric stirrer, a spherical reflux condenser and a thermometer, add 20 grams of deionized water, 0.3 grams of emulsifier OP-10, turn on the stirrer and start to heat up, when the temperature rises to 60 ℃, add 1 / 4 of a 10% solution made up of 0.3g ammonium persulfate, continue to heat up to 75°C, quickly add 30g of pre-emulsion liquid dropwise, and react at 75~85°C for about 30 minutes. When the emulsion is light blue fluorescent, When the reflux is significantly reduced, the seed emulsion has formed, and ...

Example Embodiment

[0049] Example 2

[0050] 60 grams of deionized water, 1.4 grams of 2-acrylamido-2-methyl-propyl ammonium sulfonate, 1 gram of isooctyl acrylate, 20 grams of butyl acrylate, 45 grams of methyl methacrylate, 3 grams of methyl methacrylate Acrylic acid and 7 grams of bisglycidyl methacrylate were all added to the emulsification kettle, and high-speed stirring (1500 rpm) was started for pre-emulsification, and the time was controlled at 20 minutes.

[0051] In a four-necked flask equipped with an electric stirrer, a spherical reflux condenser and a thermometer, add 15 g of deionized water, 0.1 g of emulsifier OP-10, turn on the stirrer and start to heat up, when the temperature rises to 60 ℃, add 1 / 4 of a 10% solution made up of 0.3g ammonium persulfate, continue to heat up to 75°C, quickly add 30g of pre-emulsion liquid dropwise, and react at 75~85°C for about 30 minutes. When the emulsion is light blue fluorescent, When the reflux is significantly reduced, the seed emulsion has bee...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a polyacrylate emulsion with high water resistance and a preparation method thereof. The polyacrylate emulsion consists of the following components (in parts by weight: 1-10 parts of isooctyl acrylate; 15-40 parts of butyl acrylate; 10-45 parts of methyl methacrylate; 3-5 parts of methylacrylic acid; 2-8 parts of epoxy functional monomer; 0.5-2 parts of a reactive emulsifier; 0.1-0.3 part of a nonionic emulsifier OP; 0.1-0.4 part of ammonium persulfate and 50-100 parts of deionized water. The preparation method thereof comprises three steps of pre-emulsification, seeding polymerization and polyreaction. In the preparation method, a monomer with vinyl and epoxy is taken as the functional monomer, which facilitates to improve the water resistance of the polyacrylate emulsion.

Description

technical field [0001] The invention relates to a highly water-resistant polyacrylate emulsion and a preparation method thereof. Background technique [0002] Polyacrylate emulsion is the product of emulsion polymerization of acrylate or methacrylate and other vinyl ester monomers. Currently the most widely used are (meth)acrylate copolymer emulsion, vinyl acetate / (meth)acrylate copolymer emulsion, styrene / (meth)acrylate copolymer emulsion. The emulsion polymerization process generally includes batch emulsion polymerization, semi-continuous emulsion polymerization, continuous emulsion polymerization, pre-emulsification process, seed emulsion polymerization, etc. Acrylate copolymer emulsion overcomes the shortcomings of oily copolymers such as flammability, explosion, toxicity, and serious environmental pollution. Acrylate copolymer emulsion is widely used as base material and adhesive for architectural coatings. The market continues to develop and the amount of use is incre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08F220/18C08F220/14C08F220/32C08F2/24
Inventor 潘安健黄剑清
Owner SHANGHAI APPLIED TECHNOLOGIES COLLEGE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap