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A kind of low-foaming nonionic surfactant and its preparation method and application

A non-ionic surface and active agent technology, applied in the direction of surface active detergent composition, polymer surface active compound, chemical equipment and methods, etc., can solve the problems of ecological environment pollution, catalyst poisoning, environmental pollution, etc. Corrosion equipment, low cost, low salt effect

Active Publication Date: 2020-11-10
联泓(江苏)新材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Isomeric alcohols have outstanding defoaming effects, and the surfactants derived from them also have good low-foaming properties. Among the low-foaming surfactants, the phosphate-derived surfactants of isooctyl alcohol are a class of low-foaming surfactants. Anionic surfactants, reported by Mao Fengyin et al. (Mao Fengyin, Niu Xinchao, Qiu Yi et al. Synthesis of Octanol Phosphate and Research on Filter-Aid Performance of Heavy Alkali. Journal of Chengdu University (Natural Science Edition), 2012, 31(1) : 1-3), prepared isooctyl alcohol polyoxyethylene ether phosphate, also has certain emulsifying performance, but as phosphoric acid ester anionic surfactant, thereafter processing difficulty, ecological environment is polluted, and emulsifying performance is not as good as Block type oxyalkylene polyether significantly
End-capped polyethers are also an important category of low-foaming surfactants. They are generally alkane-based end-capped polyethers, such as methyl-end capped and butyl-end capped. A large amount of alkaline alkoxide reagents will produce a large amount of solid waste such as salt during the capping process, which needs to be refined and removed, otherwise the residual salt will poison the catalyst in the synthesis process of the foam stabilizer, and this kind of solid waste will also pollute the environment and corrode equipment

Method used

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  • A kind of low-foaming nonionic surfactant and its preparation method and application
  • A kind of low-foaming nonionic surfactant and its preparation method and application
  • A kind of low-foaming nonionic surfactant and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0054] (1) Put starter C into the reactor 8-10 100g of straight-chain aliphatic alcohol is reacted with 168g propylene oxide (PO) under the effect of 1.2gKOH as catalyst at a reaction temperature of 100°C and a reactor pressure of 60Psi;

[0055] (2) Raise the reaction temperature to 120° C., keep the pressure constant and the catalyst constant, and react the polyether obtained in step (1) with 418 g of ethylene oxide (EO) to generate intermediate I;

[0056] (3) At a reaction temperature of 100°C, add 70g of butyl isocyanate and 0.35g of stannous octoate catalyst to 186g of intermediate I under normal pressure, then raise the temperature to 120°C and keep it warm for 8 hours to obtain a low-foaming nonionic Surfactant FCB01P.

[0057]

[0058] R 1 for C 8 straight chain alcohol or C 10 The alkane moiety of a straight chain alcohol.

Embodiment 2

[0060] (1) In the reactor, drop into initiator 60g isooctyl alcohol and 40g 2-ethylhexanol, be 100 ℃ at reaction temperature, reactor pressure is 60Psi, under the effect of 1.7gKOH as catalyst, with 186g propylene oxide (PO) response;

[0061] (2) Raise the reaction temperature to 120° C., keep the pressure constant and the catalyst constant, and react the polyether obtained in step (1) with 435 g of ethylene oxide (EO) to generate intermediate I;

[0062] (3) At a reaction temperature of 80°C, add 90g of cyclohexyl isocyanate and 0.60g of bismuth isooctanoate catalyst to 158g of intermediate I under normal pressure, then raise the temperature to 120°C and keep it warm for 6 hours to obtain a low-foaming nonionic Surfactant FCB02D.

[0063]

[0064] R 1 is the alkane moiety of isooctyl alcohol or 2-ethylhexanol.

Embodiment 3

[0066] (1) Put starter C into the reactor 8-10 100g of straight-chain aliphatic alcohol reacts with 174g of ethylene oxide (EO) at a reaction temperature of 120°C, a reactor pressure of 60Psi, and 1.4gKOH as a catalyst;

[0067] (2) Elevate the reaction temperature to 160° C., keep the pressure constant and the catalyst constant, and react the polyether obtained in step (1) with 100 g of ethylene oxide (BO) to generate intermediate I;

[0068] (3) Keeping the reaction temperature at 160° C., the pressure constant, and the catalyst constant, the polyether obtained in step (2) reacts with 174 g of ethylene oxide (EO) to generate intermediate II;

[0069] (4) At a reaction temperature of 90°C, add 130g of phenylisocyanate and 0.54g of stannous octoate catalyst to 180g of intermediate II under normal pressure, then raise the temperature to 130°C and keep it warm for 4 hours to obtain a low-foaming nonionic Surfactant FCB01F.

[0070]

[0071] R 1 for C 8 straight chain alco...

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Abstract

Low-foaming nonionic surfactant and its preparation method. The invention provides a nonionic surfactant with general formula (1) and its preparation method and application: it relates to the preparation of the nonionic surfactant by alkoxylation and addition reaction, especially in the presence of catalysts such as alkaline, acidic or double metal cyanides. Methods for the compositions described above, and their use as nonionic surfactants. In particular, the use of the composition disclosed in the present invention in the textile, industrial and public cleaning and daily chemical industries.

Description

technical field [0001] The invention relates to a preparation method and application of a novel alkoxylate, in particular to a preparation and application of a low-foaming nonionic surfactant. [0002] technical background [0003] Surfactants are widely used and have penetrated into various civil and industrial fields. Among them, nonionic surfactants do not ionize in water, and are amphiphilic molecules with hydroxyl or ether bonds as hydrophilic groups. Due to the nonionic surface Active agents have the characteristics of non-ionization in water, which makes non-ionic surfactants superior to ionic surfactants in some aspects, such as better solubility in water and organic solvents, and high stability in solutions , not easily affected by strong electrolyte inorganic salts and acids and bases. Because of its good compatibility with other types of surfactants, it can often be mixed and compounded well. Nonionic surfactants have good hard water resistance and low foaming pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/42C08G65/333C08G65/28C11D1/722C09K23/42
CPCC11D1/008C11D1/722C08G65/2609C08G65/33351C08G65/33355C09K23/16
Inventor 刘广宇朱军成李方
Owner 联泓(江苏)新材料研究院有限公司
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