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Moderate temperature prnited and dyed organosilicon anti-bubbling and its preparing method

A technology of organosilicon defoamer and polyorganosiloxane, which is applied in the fields of dyeing, foam dispersion/prevention, textiles and paper making, and can solve problems such as demulsification, oil floating, and unsatisfactory defoaming performance

Inactive Publication Date: 2005-07-20
JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the addition of "organic silicon" defoaming agent will be attacked by ionic properties of sodium sulfate and dyes, resulting in demulsification, oil floating and other phenomena, which will eventually lead to the appearance of "silicon spots" (silicon spots), Germany Henkel Company Kristina M. et al. introduced a defoaming mixture composed of silicone emulsion, mineral oil, white carbon black, emulsifier, thickener and water in the US patent US5599481 applied for, but the defoaming performance is difficult to make people satisfy
[0007] The inventor of the present invention thinks that the emulsion type defoamer itself is in a metastable state, and the antifoaming performance of the defoamer and the stability of the emulsion are a pair of contradictory unity. The performance will definitely be affected. Unstable defoamer emulsion has excellent defoaming performance, but it is very unsafe, especially for dyeing, surface treatment and other processes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] Mix 90 parts of methyl silicone oil with a viscosity of 500cs and 6 parts of white carbon black with a grade of A-200 at room temperature, and add 3 parts of hexamethyldisilazane and 1 part of NaOH silicone oil sol, and then at 135 □Keep at low temperature for 5h, and always keep negative pressure in the system to remove low molecular weight. Cool to room temperature to obtain the defoaming active.

[0027] Take 20 parts of the above-mentioned defoaming active substance, add 2 parts of S-65, 1.4 parts of T-80, 5 parts of model 2090 and 5 parts of N-208, keep the temperature at 65 □, slowly add 20 parts of propellant to the system The thickener aqueous solution is passed through a colloid mill after the addition, and then the remaining thickener aqueous solution is added and stirred evenly, and the obtained product is defoamer A.

example 2

[0029] Mix 92.5 parts of methyl silicone oil with a viscosity of 1000cs and 5 parts of white carbon black with the brand A-200 at room temperature, and add 2 parts of methyltriethoxysilane and 1 part of Me 4 The silicone oil sol of NOH is kept at 105□ for 4h, then raised to 150□ and kept for 1h, and the system is always kept under negative pressure to remove low molecules. Cool to room temperature to obtain the defoaming active.

[0030] Take 29 parts of the above-mentioned defoaming active substance, add 8 parts of model 2090 and 5 parts of N-208 to it, maintain the temperature at 70°C, slowly add 25 parts of thickener aqueous solution to the system, pass through the colloid mill after the addition, and then Then add 25 parts of the thickener aqueous solution, pass through the colloid mill again, and finally add the remaining thickener aqueous solution therein, stir evenly, cool to room temperature, and the obtained product is defoamer B.

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Abstract

The invention discloses an organic silicon anti-bubbling agent and the way to manufacture it which used in printing and dyeing in middle temperature. Including anti-bubbling active things, emulsification medicament, thickener and deinized water. The anti-bubblina including poly-organic silicone, water sparse particle, coupler and catalyst. The frame formula of poly-organic silicone is RaSiO(4-a) / 2, Among them 'R' for one price replace or not replace hydrocarbon that , water sparse particle for the air white charcoal, unexpectedly the silicon oil processing formation mutually of catalyst is NaOH and Me4NOH mixtures, its dosage is 0.5-8%.This invention mainly is to ask for help from some efficiently organic silicons to emulsify the active thing.

Description

technical field [0001] The invention relates to a silicone defoamer for medium-temperature printing and dyeing and a preparation method thereof, more precisely, the invention relates to a defoamer for eliminating harmful foam in the dyeing process and a preparation method thereof. The invention belongs to the technical field of fine chemical additives. Background technique [0002] In the process of industrial production, defoamers have a wide range of uses. It can be applied to various fields in the national economy, such as petroleum processing, paper industry, coatings, emulsion polymerization, sewage treatment, textile printing and dyeing, chemical cleaning and surface treatment. Etc., eliminate the foam generated by surfactant or stirring and some gases, so as to increase the machine operation speed, increase productivity and improve product quality. [0003] In the process of textile dyeing, in order to achieve uniform dyeing, many auxiliaries are used, such as penetr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04D06P1/44
Inventor 曹治平吴飞丁曦
Owner JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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