Defoamer

A defoamer, weight technology, applied in the direction of foam dispersion/prevention, to achieve the effect of excellent defoaming performance

Active Publication Date: 2006-03-29
日本诺普科助剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conventional defoamers containing metal soaps had the problem of many dents on the coating film when used for low-viscosity coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0133] In a stainless steel reaction vessel equipped with a thermometer, a stirrer, and a reflux device, 100 parts of ion-exchange water, 50 parts of a 50% sodium hydroxide aqueous solution, and a surfactant {Naロアクテイ HN-80, Sanyo Chemical Industry Co., Ltd.} 10 Servings, heated to 70°C with stirring. Next, 90 parts of caprylic acid was added while stirring, and the mixture was stirred at 70°C for 1 hour. Next, 57.1 parts of aluminum hydroxide was put in at 70°C over 1 hour, and further stirred at 70°C for 1 hour. Then, the obtained mixture was cooled to 30°C over 1 hour, filtered and washed with water to obtain aluminum octoate (a4).

[0134] The content of aluminum mono(octanoate) (a41) is 39% relative to the total weight of (a41) and aluminum di(octanoate) (a42). In addition, the content of free caprylic acid (fal) is 5% relative to the total weight of (a41) and (a42). For aluminum octoate (a4), DSC (Differential Scanning Calorimetry) analysis was performed, and it was confirmed...

manufacture example 2

[0173] In a stainless steel reaction vessel equipped with a thermometer, a stirrer, and a reflux device, 100 parts of ion-exchange water, 25 parts of a 50% sodium hydroxide aqueous solution, and a surface active agent {Naroaktei HN-80, Sanyo Chemical Industry Co., Ltd.} 10 Servings, heated to 70°C with stirring. Next, 90 parts of behenic acid was put in stirring, and it stirred at 70 degreeC for 1 hour. Next, 39.4 parts of aluminum hydroxide was put in at 70°C for 1 hour, and further stirred at 70°C for 1 hour. Then, the obtained mixture was cooled to 30°C over 1 hour, filtered and washed with water to obtain aluminum behenate (a5).

[0174] Among them, the content of aluminum mono(docosanoate) (a5) relative to the total weight of (a51) and aluminum di(docosanoate) (a42) is 11%. In addition, the content of free behenic acid (fa2) is 11% relative to the total weight of (a51) and (a52).

[0175] In addition, DSC analysis was performed on aluminum behenate (a5), and it was confirmed ...

Embodiment 1

[0177] In a stainless steel reaction vessel equipped with a thermometer and a stirrer, put hydrocarbon oil (b1) {a mixed hydrocarbon composed of COSMO PURESPIN G715 parts and JSO Aromam 79071 parts 786 parts of oil}, and then add 44 parts of aluminum carboxylate (a1) {SA-1000, Sakai Chemical Industry Co., Ltd.} while stirring. The obtained mixture was heated to 135°C, and then 100 parts of polyoxyalkylene compound {Nippel LB-385(c1), Sanyo Chemical Industry Co., Ltd.} and natural wax {Licowax S(e1), Clarianto( Co., Ltd. montan wax} 70 parts, stirred at 135°C for 1 hour. Then, the obtained mixture was cooled to 20°C over a period of 1 hour to obtain the defoamer (S1) of the present invention. Then, through a dispersion test {JISK5600-2-5: 1999 (corresponding to ISO 1524: 1983): the same as below}, it was confirmed that there are no particles of 5 μm or more in this (S1).

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PUM

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Abstract

To provide a defoaming agent causing less cissing. The defoaming agent contains an aluminum carboxylate (A) and hydrocarbon oil (B), but contains no alkaline earth metals, wherein (A) is an aluminum di-carboxylate (A2) or a mixture of an aluminum mono-carboxylate (A1) and an aluminum di-carboxylate (A2), the content, by weight, of (A) is 0.1-60% and the content of (B) is 40-99.9% based on the weight of (A) and (B), and the content of A(1) is <=40% based on the total weight of (A1) and (A2). In addition, the defoaming agent contains free fatty acid (FA) and the content of (FA) is preferably 1-30% based on the weight of (A1) and (A2). In addition, the defoaming agent contains hydrocarbon oil (B) containing aromatic carbon (BA), and the content of (BA) is preferably 1-30% by number based on the total number of carbons of (B).

Description

Technical field [0001] The invention relates to a defoamer. More specifically, it relates to a defoamer applicable to processing steps and drainage treatment steps in the pulp industry, food industry, fiber industry, building board manufacturing, paint industry, chemical industry, etc. Background technique [0002] As known defoamers, there are polysiloxane-polyether block polymers, water-immiscible oils, polypropylene glycol-polyethylene glycol block polymers, emulsifiers, and metal soaps (fatty acid alkaline earth metal And / or fatty acid aluminum) (Patent Document 1). [0003] When conventional defoamers containing metal soaps are used in low-viscosity paints, there is a problem that many dents appear on the coating film. [0004] Patent Document 1: Japanese Patent Publication No. 63-52927 (corresponding to USP4384976) Summary of the invention [0005] The object of the present invention is to provide a defoamer with less dents. [0006] In order to solve the above-mentioned p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D19/04
Inventor 泉佳秀
Owner 日本诺普科助剂有限公司
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