Preparation method and application of fluorine-silicon modified acrylate emulsion

A technology of acrylate and fluorosilicone modification, which is applied in dyeing, textiles and papermaking, etc. It can solve the problems of substandard fastness, poor hand feeling, and low dosage, so as to improve color fastness and appearance. The effect of color quantity and synthesis process is simple

Active Publication Date: 2020-01-03
ZHEJIANG SCI-TECH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when acrylate emulsion is used to print dark fabrics (generally, the amount of liquid disperse dye is more than 2%), there are problems that the fastness is not up to standard when the amount is small, and the hand feeling is not good when the amount is large.

Method used

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  • Preparation method and application of fluorine-silicon modified acrylate emulsion
  • Preparation method and application of fluorine-silicon modified acrylate emulsion
  • Preparation method and application of fluorine-silicon modified acrylate emulsion

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Embodiment 1

[0039] (1) Synthesis of fluorosilicone:

[0040]

[0041] Weigh a certain amount of octamethylcyclotetrasiloxane (D 4 ), 1,3-divinyl-1,1,3,3-tetramethyldisiloxane (DVMS), methyltrifluoropropylcyclotrisiloxane (D 3 F) and tetramethyltetravinylcyclotetrasiloxane (D 4 Vi) Stir magnetically at 65°C for about 40 minutes and mix well, then take 0.15% trifluoromethanesulfonic acid as a catalyst, react at 65°C for 7 hours, add anhydrous sodium carbonate to neutralize to a pH value of about 6- 7. Bake in a vacuum oven at 120° C. for 5 hours to remove unreacted monomers and small molecule polysiloxanes.

[0042] Description: Monomer D n (D 4 +D 3 F): D 4 The molar ratio of Vi:DVMS is 17:1:1 where D 3 The molar content of F is 20%, and the fluorosiloxane with the molecular weight of 7916 is synthesized, and the yields are all over 90%.

[0043] The infrared spectrogram of the fluorosiloxane prepared in embodiment 1 is as follows figure 1 As shown, the infrared analysis of fluo...

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Abstract

The invention discloses a preparation method of a fluorine-silicon modified acrylate emulsion and application of the fluorine-silicon modified acrylate emulsion in liquid disperse dye printing. The preparation method comprises the following steps: (1) synthesis of fluorosiloxane; (2) taking isooctyl acrylate, methyl methacrylate, acrylic acid, n-hexadecane and the fluorosiloxane obtained in the step (1), uniformly stirring, and adding into an emulsifier aqueous solution to obtain a pre-emulsified liquid; and adding the pre-emulsified liquid into a reactor to serve as a seed emulsion, adding anammonium persulfate aqueous solution into the seed emulsion to react, and cooling to obtain the fluorine-silicon modified acrylate emulsion. According to the method, a fluorine-silicon chain segmentis introduced on the basis of acrylate. The handfeel of a printed fabric can be effectively improved by utilizing the softness of an organic silicon chain segment; by utilizing short C-F covalent bonds and large bond energy of organic fluorine segments, the hydrophobicity of the adhesive film is improved, the solubility parameter and the refractive index of the adhesive film are reduced, and the color fastness and the color yield of the fabric are improved.

Description

technical field [0001] The invention relates to the field of fluorosilicon-modified acrylate emulsion, in particular to a preparation method of fluorosilicon-modified acrylate emulsion and its application in liquid disperse dye printing. Background technique [0002] When printing with disperse dyes, most of the color paste dyes are powder disperse dyes, which are mainly developed by hot melting, and then washed to remove various residual auxiliaries and dyes. The process wastes water resources and pollutes the environment seriously. At present, there are liquid disperse dyes on the market. After the color is developed by hot melting, the water-free printing of light-colored fabrics (generally, the amount of dye is less than 0.5%) has been realized. After the water-free printing of medium-dark fabrics, the color fastness is not up to standard. Therefore, medium and dark fabrics still need to be washed after printing. In order to realize the washing-free processing of liqui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C08F220/18C08F220/14C08F220/06C08G77/08C08G77/24D06P1/16D06P1/52
CPCC08F283/124C08G77/24C08G77/08D06P1/16D06P1/5257C08F220/14C08F220/06
Inventor 姜建堂沈一峰
Owner ZHEJIANG SCI-TECH UNIV
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