A kind of unsaturated organosilicon and preparation method, a kind of silicon-acrylic emulsion and preparation method and use thereof

A silicone-acrylic emulsion and organosilicon technology, which is applied in the fields of building interior wall latex paint, silicone-acrylic emulsion and preparation, unsaturated silicone and preparation field, can solve the problem of reducing the usage of titanium dioxide, incapable of adding a large amount, affecting the performance of paint film, etc. problem, to achieve the effect of excellent scrub resistance

Active Publication Date: 2022-08-02
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hollow polymer (op) developed by American Rohm and Haas can replace part of titanium dioxide to provide covering (US006020435A), but it cannot be added in large quantities, otherwise it will affect the performance of the paint film; CN 102775861A adopts hollow polymer with hollow glass microspheres , can only reduce the amount of titanium dioxide used by 30%, and a large amount of use will also affect the performance of the paint film

Method used

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  • A kind of unsaturated organosilicon and preparation method, a kind of silicon-acrylic emulsion and preparation method and use thereof
  • A kind of unsaturated organosilicon and preparation method, a kind of silicon-acrylic emulsion and preparation method and use thereof
  • A kind of unsaturated organosilicon and preparation method, a kind of silicon-acrylic emulsion and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Preparation of unsaturated organosilicon M20 (n=20) represented by formula (I):

[0070] 1) 1600g (1mol) of single-ended hydrogen-containing silicone oil with a degree of polymerization of 20 is added to the reactor, stirring and heating are turned on; after the temperature rises to 70°C, 352g (1mol) pentaerythritol tetraacrylate and 0.016g are added dropwise. Casterplatin catalyst was added dropwise for 2 hours, while the drop rate was controlled to keep the reaction temperature below 90°C.

[0071] 2) After the dropwise addition, keep the temperature at 80°C for 1h, check that the residual of silicon hydrogen is less than 10ppm and the reaction ends, cool down to below 40°C, filter and discharge the material to obtain unsaturated silicone M20.

[0072] In the infrared test spectrum, the Si-H characteristic peak basically disappears after the reaction, which proves that the single-ended hydrogen-containing silicone oil and pentaerythritol tetraacrylate undergo a hydros...

Embodiment 2

[0074] Preparation of unsaturated silicone 10 (n=10) represented by formula (I):

[0075] 1) 860g (1mol) of single-ended hydrogen-containing silicone oil with a degree of polymerization of 10 is added to the reactor, and stirring and heating are turned on; after the temperature rises to 75°C, 373.12g (1.06mol) of pentaerythritol tetraacrylate and 0.0017g of Custer catalyst was added dropwise for 1h, while the drop rate was controlled to keep the reaction temperature not exceeding 90°C.

[0076] 2) After the dropwise addition, keep the temperature at 70°C for 1 hour, check that the residual of silicon hydrogen is less than 10 ppm and the reaction is completed, cool down to below 40°C, and filter out the material to obtain unsaturated silicone M10.

Embodiment 3

[0078] Preparation of unsaturated organosilicon 15 (n=15) represented by formula (I):

[0079] 1) 1230g (1mol) of single-ended hydrogen-containing silicone oil with a degree of polymerization of 15 is added to the reactor, and stirring and heating are turned on; after the temperature rises to 80°C, 380.16g (1.08mol) of pentaerythritol tetraacrylate and 0.0246g of Castel catalyst was added dropwise for 3 hours, while the drop rate was controlled to keep the reaction temperature not exceeding 90°C.

[0080] 2) After the dropwise addition is completed, keep the temperature at 75°C for 0.5h, detect that the residual silicon hydrogen is less than 10ppm and the reaction is completed, cool down to below 40°C, and filter out the material to obtain unsaturated silicone M15.

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Abstract

The invention relates to an unsaturated organosilicon and a preparation method, a silicone-acrylic emulsion, a preparation method and application thereof. The structure of the unsaturated organosilicon is shown in formula (I): the organosilicon contains multiple double bonds, and can be polymerized to form a polymer network with high crosslink density without hydrolysis. The silicone-acrylic emulsion of the present invention is prepared by including unsaturated organosilicon represented by formula (I) and acrylate monomers. The silicone-acrylic emulsion has self-covering properties, is used for building interior wall paint, and has excellent covering performance and scrub resistance.

Description

technical field [0001] The invention relates to an unsaturated organosilicon and a preparation method, as well as a silicone-acrylic emulsion prepared by using the unsaturated organosilicon, a preparation method and use thereof for latex paint of interior walls of buildings, and belongs to the field of acrylic emulsion synthesis. Background technique [0002] In many coating fields, architectural coatings are the most water-based, and titanium dioxide plays an important role in architectural coatings, providing high coverage, but titanium dioxide is expensive and is an important contributor to the cost of architectural coatings formulations. Because of its excellent cost performance, acrylic emulsion is the main film-forming material of water-based architectural coatings, which endows the paint film with scrub resistance, stain resistance and other properties, but it has no covering effect. [0003] At present, titanium dioxide is widely used in architectural coatings to pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/38C08F283/12C08F220/14C08F220/18C08F220/06C09D151/08C09D5/02C09J151/08
CPCC08G77/38C08F283/128C09D151/085C09D5/02C09J151/085C08F220/14C08F220/1804C08F220/06
Inventor 马吉全高源封玲珑纪学顺
Owner WANHUA CHEM GRP CO LTD
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