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Block polysiloxane polymer and pigment dispersant containing same

A technology of polysiloxane and polymer, which is applied in the field of pigment dispersants, can solve the problems of unsatisfactory organic pigment effects, achieve the effects of shortening the grinding time, good dispersion effect, improvement of fluidity and tinting strength

Active Publication Date: 2015-04-01
杭州百合辉柏赫颜料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN101862619A discloses a block polymer dispersant and a preparation method thereof, wherein polyammonium acrylate is used as an anchoring block for dispersing organic pigments in organic solvents, but the effect of dispersing organic pigments in aqueous systems is not ideal

Method used

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  • Block polysiloxane polymer and pigment dispersant containing same
  • Block polysiloxane polymer and pigment dispersant containing same
  • Block polysiloxane polymer and pigment dispersant containing same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0043]10.00g polyethylene glycol (n=20), 8.00g sodium hydroxide, 0.8059g tetrabutylammonium bromide, 5.00g dichloromethane are placed in the four-necked flask that mechanical stirring and thermometer are housed, 15.33g Allyl chloride was slowly added dropwise to the reaction liquid, and after the dropwise addition was completed, the temperature was raised to 60°C and kept for 6 hours. After the reaction is complete, filter under reduced pressure to remove excess sodium hydroxide and generated sodium chloride, distill methylene chloride under reduced pressure to obtain a light yellow transparent liquid, dissolve it with ethyl acetate, and add an equal mass of deionized water , saturated saline and washed twice respectively, take the supernatant, add anhydrous sodium sulfate to dry, remove ethyl acetate by distillation under reduced pressure to obtain light yellow allyl polyoxyethylene ether A-1, the test data of its infrared spectrum As follows.

[0044] IR (tablet method): 34...

preparation example 2

[0046] 10.00g polyethylene glycol (n=20), 1.83g sodium hydroxide, 0.1612g tetrabutylammonium bromide, 4.50g dichloromethane are placed in the four-necked flask that mechanical stirring and thermometer are housed, 3.13g Allyl chloride was slowly added dropwise to the reaction liquid, and after the dropwise addition was completed, the temperature was raised to 60°C and kept for 6 hours. After the reaction is complete, filter under reduced pressure to remove excess sodium hydroxide and generated sodium chloride, distill methylene chloride under reduced pressure to obtain a light yellow transparent liquid, dissolve it with ethyl acetate, and add an equal mass of deionized water and saturated saline twice, take the supernatant, add anhydrous sodium sulfate to dry, remove ethyl acetate by distillation under reduced pressure to obtain light yellow allyl polyoxyethylene ether A-2, the test data of its infrared spectrum As follows.

[0047] IR (tablet method): 3449.59 (s, υ-OH), 2889....

preparation example 3

[0049] 10.00g polyethylene glycol (n=20), 10.00g sodium hydroxide, 0.8059g tetrabutylammonium bromide, 7.00g dichloromethane are placed in the four-necked flask that mechanical stirring and thermometer are housed, 19.13g Allyl chloride was slowly added dropwise to the reaction liquid, and after the dropwise addition was completed, the temperature was raised to 60°C and kept for 6 hours. After the reaction is complete, filter under reduced pressure to remove excess sodium hydroxide and generated sodium chloride, distill methylene chloride under reduced pressure to obtain a light yellow transparent liquid, dissolve it with ethyl acetate, and add an equal mass of deionized water , saturated saline and washed twice respectively, take the supernatant, add anhydrous sodium sulfate to dry, remove ethyl acetate by distillation under reduced pressure to obtain light yellow allyl polyoxyethylene ether A-3, the test data of its infrared spectrum As follows.

[0050] IR (tablet method): ...

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Abstract

The invention discloses a block polysiloxane polymer with a structure shown by a formula (I) shown in the specification, wherein n is 5-100, m is 10-200, R1 is H, -CH3, -CH2CH3 or -CH2CH2CH3, R2 is H, -CH3, -CH2CH3 or -CH2CH2CH3, and R3 is H or C1-C20 alkane or C1-C20 alkyl containing hydroxy. An acrylic acid or methacrylate block in the block polysiloxane polymer is an anchoring chain segment which can be adsorbed on the surface of organic pigment particles under the action of hydrogen bonds, acid-base action and covalent bonds; in a waterborne system, a polyether block is used as a solvation chain and can be well dissolved in a dispersion medium, the steric hindrance of the polyether block can prevent the pigment particles from flocculation, and the polyether block can quickly wet the organic pigment particles and shorten the grinding time; a polysiloxane chain can effectively improve the fluidity and coloring power of the pigment; and the polyether block is used as a dispersant of the solvation chain, and has a good dispersion effect on the pigment in the waterborne system.

Description

technical field [0001] The invention relates to a block polysiloxane high polymer and a pigment dispersant containing the polymer. Background technique [0002] Organic pigments are widely used in coatings, plastics, inks and other industries, among which the excellent dispersibility of pigments is an important factor affecting performance. Organic pigments and application systems often form a solid-liquid dispersion, which is highly thermodynamically unstable. Under the action of intermolecular forces, organic pigment particles are prone to agglomeration, which affects the application performance of the product. Therefore, in order to obtain a uniform and stable dispersion system, it is often necessary to use a dispersant. [0003] Polymer pigment dispersant is a new generation of high-efficiency pigment dispersant, which has a significant effect on improving the dispersion of organic pigments. In addition, it can also improve some other properties of pigments. The block ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/46C08F283/12C08F210/04C08F283/06C08F220/06C08F220/10C09B67/20C09B67/40
Inventor 王利民陈倩如黄卓吴生英罗德亮田禾朱星星
Owner 杭州百合辉柏赫颜料有限公司
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