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High-solid and low-viscosity organosilicone-modified acrylate resin, preparation method and applications

An acrylic resin, high-solid and low-viscosity technology, used in biocide-containing paints, coatings, antifouling/underwater coatings, etc.

Active Publication Date: 2017-07-07
NIPPON PAINT CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the continuous improvement of coating performance requirements of coating manufacturers, coating manufacturers hope that the varnish coating film can have high friction resistance and slipperiness, and it is difficult to meet such requirements simply by using traditional acrylic resin

Method used

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  • High-solid and low-viscosity organosilicone-modified acrylate resin, preparation method and applications
  • High-solid and low-viscosity organosilicone-modified acrylate resin, preparation method and applications
  • High-solid and low-viscosity organosilicone-modified acrylate resin, preparation method and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0105] The formula of the preparation method of the organosilicon macromonomer G with a hydroxyhydrocarbyl group in the side chain and a methacrylic acid group in a single end is as follows:

[0106]

[0107] Hydroxyl protection: In a 1L reactor, slowly drop 338.1g (2.1mol) of hexamethyldisilazane into 232g (4mol) of allyl alcohol at room temperature. After the dropwise addition, the temperature of the reaction system was raised to 100° C., and the reaction was continued at this temperature for 6 hours, and then the reaction was stopped. The fraction at 98-100° C. was collected under normal pressure to obtain 473.2 g of allyloxytrimethylsilane with a yield of 91%.

[0108] like Figure 1~3 as shown, figure 1 It is the infrared spectrogram of allyl alcohol. In the figure: the ordinate Transmittance refers to the transmittance, and the abscissa wavenumbers refers to the wave number. Allyl alcohol is at 3332cm -1 There are broad hydroxyl stretching vibration absorption peak...

Embodiment 2

[0116] Hydroxyl protection: In a 1L reactor, slowly drop 338.1g (2.1mol) of hexamethyldisilazane into 288g (4mol) of 3-buten-1-ol at room temperature. After the dropwise addition, the temperature of the reaction system was raised to 100° C., and the reaction was continued at this temperature for 6 hours, and then the reaction was stopped. The fraction at 110-115°C was collected under normal pressure to obtain 558 g of butoxytrimethylsilane with a yield of 96.9%.

[0117] One-time hydrosilylation: In a 1L reaction kettle, add 436.3g (3.03mol) butyloxytrimethylsilane and 0.5g chloroplatinic acid catalyst in sequence, and after passing nitrogen gas for 20min, raise the temperature of the reaction system to 100°C At this temperature, 180 g (1 mol) of trimethylcyclotrisiloxane was added dropwise, and the reaction was terminated after 8 hours of reaction. Low boilers were distilled off under reduced pressure to obtain 601 g of trimethylsiloxyalkyl-modified cyclotrisiloxane with a y...

Embodiment 3

[0122] The allyl alcohol in the hydroxyl protection reaction of Example 1 is replaced by 4-penten-1-alcohol, the amount of n-butyllithium in the anionic polymerization is changed from 1mol to 0.5mol, and the substance of dimethyl monochlorosilane The amount of is changed from 1.1mol to 0.55mol, and other reaction conditions are as described in Example 1, and the molecular weight and structure are different from the organosilicon macromer of Example 1.

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Abstract

The invention discloses a high-solid and low-viscosity organosilicone-modified acrylate resin, the structure of which is shown as the general formula I, wherein the definitions of substituted groups in the formula are shown in a specification. The high-solid and low-viscosity organosilicone-modified acrylate resin can endow a varnish film with high rubbing resistance and smooth performances.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a high-solid and low-viscosity organosilicon-modified acrylic resin, a preparation method and an application. Background technique [0002] As we all know, because acrylic resin has excellent aging resistance and excellent physical and mechanical properties, it is widely and widely used in the preparation of various high-performance coatings; especially in the field of automotive finishing, acrylic resin can be combined with amino resin or multifunctional Isocyanates undergo a crosslinking reaction and are therefore used to prepare one-component solvent-based acrylic-amino or two-component solvent-borne acrylic-isocyanate clear coats that are applied over topcoats to form the outermost protective decorative coating. [0003] With the gradual improvement of people's awareness of environmental protection, the Chinese government officially included volatile org...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C08F212/08C08F220/18C08F220/28C08F220/06C08F220/14C08F218/10C08F222/14C08G77/14C08G77/12C08G77/38C09D151/08C09D5/16
CPCC09D151/08C08F283/128C08G77/12C08G77/14C08G77/38C09D5/1662C08F220/1812C08F220/281C08F220/1804C08F220/18
Inventor 张萌夏天渊许建华印维坚
Owner NIPPON PAINT CHINA
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