Acrylic ester swellable rheology modifier with core-shell structure and preparation method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of rheology modifier and acrylate, which can be applied in the direction of coating, etc., and can solve the problems of poor water resistance and water whitening resistance of the paint film.
Active Publication Date: 2022-02-18
WANHUA CHEM GRP CO LTD
View PDF10 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0011] The above patents are all methods of synthesizing thickeners, but they all swell and stretch the entire particle, so that when used in water-based formulations, the paint film has poor water resistance or water whitening 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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0069] A kind of acrylate swelling type rheology modifier of core-shell structure, its synthetic formula composition is as table 1:
[0070] Table 1
[0071]
[0072] The steps of the acrylic swelling type rheology modifier of the core-shell structure synthesized by this formula are as follows:
[0073] 1) Add 1g of SDS and 250g of water into a four-necked flask, connect the condenser, start stirring, mix well, and pass nitrogen to remove the oxygen in the reactor;
[0074] 2) The configuration of the core layer monomer: add 4.51g of SDS and 87.9g of water into flask 1, stir to fully dissolve the SDS, then add 151.81g of BA, 1.19g of cross-linking monomer TMPDE and 52g of MAA in sequence, and configure it as pre-emulsion 1;
[0075] 3) Configuration of the transition layer monomer: add 0.6g of SDS and 15g of water into the flask 2, stir to fully dissolve the SDS, then add 21g of BA, 17g of EHA and 7g of MAA in sequence to form a pre-emulsion 2;
[0076] 4) Configuration ...
Embodiment 2
[0084] A kind of acrylate swelling type rheology modifier of core-shell structure, its synthetic formula composition is as table 2:
[0085] Table 2
[0086]
[0087] The synthetic process of embodiment 2 is the same as embodiment 1, repeats it no longer here, the product A2 that obtains according to this formula.
Embodiment 3
[0089] A kind of acrylate swelling type rheology modifier of core-shell structure, its synthetic formula is composed as table 3:
[0090] table 3
[0091]
[0092] The synthetic process of embodiment 3 is the same as embodiment 1, repeats it no longer here, the product A3 that obtains according to this formula.
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
Property
Measurement
Unit
particle diameter
aaaaa
aaaaa
particle diameter
aaaaa
aaaaa
Login to view more
Abstract
The invention discloses a core-shell structure acrylate swelling type rheology modifier and a preparation method thereof. The rheology modifier has a three-layer hierarchical structure, which are: 1) a core structure layer, the The core structure layer is a slightly crosslinked copolymer containing acrylate monomers; 2) the transition layer is a non-crosslinked copolymer containing acrylate monomers; 3) the shell structure layer, The shell structure layer is a highly cross-linked copolymer containing acrylate monomers; the rheology modifier of the present invention can reduce the free water content of the system during the volume swelling process, thereby increasing the viscosity of the system, and Since the outer shell structure of the present invention will not burst, and the inner alkali-swellable hydrophilic substance will not enter the system, the effect on the water resistance and water whitening resistance of the product will be less affected.
Description
technical field [0001] The invention relates to a core-shell structure acrylate swelling type rheology modifier and a preparation method thereof, which has a three-layer hierarchical structure, which are respectively a core structure layer, a transition layer and a shell structure layer. The rheology modification The agent can be fully swelled after neutralization in water, and can form a transparent liquid to meet the rheological needs of different water-based systems. At the same time, the invention also relates to the synthesis method and application of the rheological additive. Background technique [0002] With the gradual improvement of people's requirements for environmental protection and the country's strict requirements for environmental protection, water-based coating systems have been widely used. Water-based coatings have the advantages of reducing environmental pollution, improving the operating and construction environment, and saving a lot of organic solvent...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more