Anti-foaming agent for papermaking system

A defoamer and system technology, applied in the direction of defoamer, papermaking, textiles and papermaking, etc., can solve problems such as process influence and product instability, and achieve the effect of eliminating harmful foam

Inactive Publication Date: 2011-08-17
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

If these harmful foams are not eliminated in time, it will have a serious impact on the subsequent process and easily cause product instability.

Method used

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  • Anti-foaming agent for papermaking system

Examples

Experimental program
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Effect test

preparation example Construction

[0029] Preparation of Silicone Composition:

[0030] The organosilicon composition was prepared by using the above-mentioned preparation process of the organosilicon composition and the conditions in the following table.

[0031] Table 1 Silicone composition

[0032]

Embodiment 1

[0034] Add 5 parts of octadecyl alcohol, 2 parts of glycerol monostearate, 5 parts of higher fatty alcohol polyethers (structural formula is C 13 h 27 O(EO) 5 (PO) 7 H), 2 parts of silicone composition A, 2 parts of N-90 (polyether modified polysiloxane, made by Nanjing Sixin Technology Application Research Institute Co., Ltd.) and 1 part of P-70 (polyether modified polysiloxane Oxane, made by Nanjing Sixin Technology Application Research Institute Co., Ltd.), the system was heated to 80 ° C, stirred for a while, so that the components were mixed evenly; then slowly added 70 parts of water to it, and after the water was added, it was ground and dispersed by a colloid mill. Until the particle size of the emulsion is less than 15 μm, the defoamer E is obtained.

Embodiment 2

[0036] Add 5 parts of lauryl alcohols, 5 parts of higher fatty alcohol polyethers (structural formula is C 18 h 37 O(PO) 10 H), 4 parts of octyl stearate, 6 parts of silicone composition B, 2 parts of nonylphenol polyoxyethylene ether (10) and 2 parts of nonylphenol polyoxyethylene ether (3), the temperature of the system was raised to 70°C , keep warm for 10 minutes, slowly add 70 parts of water, after adding water, grind and disperse by colloid mill to make the particle size of the emulsion less than 15 μm, and obtain defoamer F.

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Abstract

The invention provides an anti-foaming agent for a papermaking system. The anti-foaming agent consists of advanced fatty alcohol, advanced fatty alcohol polyether, aliphatic ester, organic silicon composition, emulsifying agent and water. The anti-foaming agent can effectively eliminate the harmful foam in the processes of papermaking, coating, pulp washing, sewage treatment and the like in the industries of coating and starch processing and the like and the papermaking industry, the performance of the anti-foaming agent is not affected by temperature, and the problem of foam elimination under the jointed foam stabilizing condition of multiple surfactants can be well solved.

Description

technical field [0001] The invention relates to a defoamer for papermaking and papermaking systems. The defoamer is a fine chemical additive and therefore belongs to the technical field of fine chemical preparations. Background technique [0002] In modern industrial production, such as textile printing and dyeing, paint, papermaking, cleaning, metal processing and other industries, a large number of chemical additives are usually used to meet different purposes, because many of the chemical additives used are surfactants and polymers. Compounds, so a lot of foam will be produced in production, especially the foaming phenomenon of anionic and nonionic surfactants is the most serious. If these harmful foams are not eliminated in time, it will have a serious impact on the subsequent process and easily cause product instability. In response to this problem, the more efficient method is to add a defoamer to the foaming system. [0003] In the paper industry, it generally conta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/12D21H17/59
Inventor 吴飞曹添钟翔许勇
Owner JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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