Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

One-component organosiloxane/inorganic silica sol hybrid high silicon content polyacrylate aqueous dispersion and preparation method thereof

A technology of organosiloxane and polyacrylate, which is applied in the direction of coating, can solve problems such as difficult preparation, and achieve the effect of improving the comprehensive performance of the coating film, better stability, and improving electrostatic repulsion

Active Publication Date: 2019-06-18
SOUTH CHINA UNIV OF TECH
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In summary, in the prior art, it is still difficult to prepare an organic-inorganic silicon hybrid water-based polyacrylate with storage stability, high coating film hardness and high resistance.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • One-component organosiloxane/inorganic silica sol hybrid high silicon content polyacrylate aqueous dispersion and preparation method thereof
  • One-component organosiloxane/inorganic silica sol hybrid high silicon content polyacrylate aqueous dispersion and preparation method thereof
  • One-component organosiloxane/inorganic silica sol hybrid high silicon content polyacrylate aqueous dispersion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: Preparation of a single-component organosiloxane / inorganic silica sol hybrid high silicon content polyacrylate aqueous dispersion (ABC-1)

[0045] Add 50 g of propylene glycol methyl ether into a reaction vessel equipped with a stirring paddle, a thermometer, a dropping funnel, and a condenser, and heat up to 80° C. 25.2g methyl methacrylate, 19.6g n-butyl acrylate, 21g n-butyl methacrylate, 4.2g acrylic acid, 1.4g azobisisobutyronitrile and 2.1g γ-methacryloxypropyl trimethoxy Mix the base silane evenly to prepare the monomer initiator mixture, put it in the dropping funnel, add it dropwise to the above solvent within 3 hours, and continue the reaction at 80°C for 4 hours. The temperature was lowered to 40°C, and 5g of triethylamine was added to neutralize the carboxyl groups in the resin to obtain a silylated polyacrylate resin (A-1), which was discharged for later use.

[0046] Add 67 g of silica sol into the reaction vessel, and raise the temperature to ...

Embodiment 2

[0057] Example 2: Preparation of One-Component Organic-Inorganic Silicon / Polyacrylate Hybrid Aqueous Dispersion (ABC-2)

[0058] Silylated polyacrylate resin (A-2) was prepared in the same usage, dosage and process as in Example 1.

[0059] The same usage, dosage and process as in Example 1 were used to prepare the functionalized silica sol (B-2).

[0060] Polyorganosiloxane (C-2) was prepared in the same usage, dosage and process as in Example 1.

[0061] Mix the silanized polyacrylate resin (A-2) and polyorganosiloxane (C-2) uniformly at 40°C, and disperse it into 64g of deionized water at a speed of 3000 rpm, and then in Add the above-mentioned functionalized silica sol (B-2) under the same rotating speed to obtain a high-silicon-content polyacrylate aqueous dispersion (ABC- 2).

Embodiment 3

[0062] Example 3: Preparation of high silicon content polyacrylate aqueous dispersion (ABC-3) hybridized with one-component organosiloxane / inorganic silica sol

[0063] Add 30 g of propylene glycol methyl ether and 40 g of isopropanol into a reaction vessel equipped with a stirring paddle, a thermometer, a dropping funnel, and a condenser, and heat up to 80° C. 25.2g methyl methacrylate, 16.8g n-butyl acrylate, 21g n-butyl methacrylate, 3.5g acrylic acid, 3.5g hydroxypropyl acrylate, 1.4g azobisisobutyronitrile and 2.1g vinyltrimethoxy Mix the base silane evenly to prepare the monomer initiator mixture, put it in the dropping funnel, add it dropwise to the above mixed solvent within 3 hours, and continue the reaction at the same temperature for 4 hours. Cool down to 40°C, turn on the vacuum pump, pump out the isopropanol, then add 4.2g of triethylamine to neutralize the carboxyl groups in the resin to obtain a silylated polyacrylate resin (A-3), and discharge it for later use....

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
hardnessaaaaaaaaaa
hardnessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a single-component organosiloxane / inorganic silica sol hybrid polyacrylate aqueous dispersion with high silicon content and a preparation method thereof. The preparation method firstly prepares silanized polyacrylate resin, then prepares polyorganosiloxane and functionalized silica sol, and mixes silanized polyacrylate resin and polyorganosiloxane uniformly at 40-80°C to prepare Composite resin, the obtained functionalized silica sol is diluted with 50 to 300 parts of deionized water at room temperature, and the composite resin is added to the diluted functionalized silica sol under high-speed stirring to obtain a single-component organosilicone Alkane / inorganic silica sol hybrid high-silicon-content polyacrylate aqueous dispersion; the present invention is obtained by neutralizing carboxyl-containing silanized polyacrylate segments, polysiloxane segments, and functionalized silica hydrosols Simple mixing is carried out, and the formed aqueous composition can be stored for a long time without problems such as coagulation, viscosity increase, and gelation.

Description

technical field [0001] The present invention relates to a polyacrylate hybrid aqueous dispersion, especially a single-component self-crosslinking polyacrylic acid with high silicon content hybridized with organosiloxane / inorganic silica sol and having high coating film hardness and tolerance Aqueous ester dispersions and methods for their preparation. Background technique [0002] The use of organic-inorganic hybrid technology to modify water-based acrylic resin can learn from each other's strengths and obtain hybrid resins with excellent comprehensive properties. A common practice is to introduce inorganic components into the organic resin system to form an inorganic network to form an organic-inorganic composite resin. Among the inorganic components, silica particles and silicone resin are more common. [0003] Chinese patent CN 101517021A describes a method for the manufacture of a water-based two-liquid curing coating composition, which mainly consists of passing di- o...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/10C08F220/06C08F220/08C08G77/06
CPCC09D143/04C08F220/14C08G77/06C08G77/08C09D5/1675C09D5/1687C08K2201/011C08L83/04C08K9/06C08K3/36C08F220/1804C08F220/06C08F230/08C08F220/281
Inventor 皮丕辉曾一成文秀芳徐守萍程江
Owner SOUTH CHINA UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com