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Rosin-based chelating gemini surfactant and preparation method thereof

A Gemini surface, rosin-based technology, applied in the field of functional green surfactants and its preparation, can solve the problems of unfavorable sustainable development, and achieve the effects of increasing added value, easy biodegradation, and low toxicity of products

Active Publication Date: 2013-05-08
广东威斯达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many surfactant raw materials used today are derived from petroleum products, which is not conducive to sustainable development

Method used

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  • Rosin-based chelating gemini surfactant and preparation method thereof
  • Rosin-based chelating gemini surfactant and preparation method thereof
  • Rosin-based chelating gemini surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of rosin-based chelating gemini surfactant, general structural formula is as follows:

[0023]

[0024] In the formula, M is metal ion K or Na, PEG is polyethylene glycol, and the molecular weight of polyethylene glycol is any one of 400, 600, 1000, 2000, 4000.

[0025] A method for preparing the rosin-based chelating gemini surfactant, first esterifying rosin with polyethylene glycol, adding the conjugated double bond of rosin through D-A addition, and reacting with an alkali solution to obtain the rosin chelating surfactant , specifically prepared according to the following formula,

[0026]

[0027] The ratio of the amount of rosin to polyethylene glycol is 2: (1-1.1), wherein the preferred ratio is 2: 1, the catalyst consumption is 0.1%-0.2% of the mass of rosin, and the esterification temperature is 230-280°C. The curing time is 6-8 hours.

[0028] The reaction process is controlled by measuring the acid value of the reactant. When the acid value of ...

Embodiment 2

[0032] A kind of preparation method of rosin base chelating surfactant, synthesis comprises the following steps:

[0033] Respectively take rosin and Polyethylene Glycol 400 with a molar ratio of 2:1 and pour them into a 500ml four-neck flask, then add an appropriate amount of zinc oxide (the amount of zinc oxide accounts for about 0.1-0.2% of the rosin quality) as a catalyst, Heat to 250°C to make it fully react, and when the acid value drops to about 10, the reaction is basically completed, then cool down.

[0034] Cool rosin polyethylene glycol ester to 220°C, add maleic anhydride (mass ratio of maleic anhydride to rosin = 1:5), the catalyst is heteropolyphosphotungstic acid, and the catalyst dosage is 0.1%-0.2% of the mass of rosin , React at 220°C for 5h, cool down to about 120°C and pour out the product.

[0035] Take 50g of maleic rosin polyethylene glycol ester and put it in a 250ml four-necked flask, slowly add 30% NaOH solution dropwise at room temperature while sti...

Embodiment 3

[0039] Synthetic technique is similar to embodiment 2, and rosin double bond D-A addition raw material can replace maleic anhydride with fumaric acid, and the mass ratio of its rosin and fumaric acid is (4-5): 1, for example can choose 4: 1, 4.2:1, 4.4:1, 4.6:1, 4.8:1, 5:1.

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PUM

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Abstract

The invention discloses a rosin-based chelating gemini surfactant and a preparation method thereof. The rosin-based chelating gemini surfactant has the structure general formula as follows, and in the formula, M is metal ion K or Na, and PEG is polyethylene glycol with the molecular weight which is any in 400, 600, 1000, 2000 and 4000. The invention also discloses the compound and the preparationmethod thereof; and the preparation method comprises the steps of: using rosin and polyethylene glycol for esterification, carrying out D-A addition on conjugated double bonds in the rosin, and obtaining the rosin-based chelating surfactant by alkali neutralization. The prepared surfactant has metal ion chelating performance and strong surface activity, and the raw materials are low in price, easily obtained and can be biodegradable. The rosin-based chelating gemini surfactant is a novel functional green surfactant.

Description

technical field [0001] The invention relates to a functional green surfactant and a preparation method thereof, in particular to a rosin-based chelating surfactant and a preparation method and application thereof. Background technique [0002] Chelating surfactant is a new type of functional surfactant, which is derived from organic chelating agents such as EDTA. It is one of the most important additives in detergent formulations, especially for heavy-duty and concentrated detergents, the choice of the type and amount of chelating agent is not only related to the washing performance of the product, but also affects the manufacturing cost of the product. Studies have shown that EDTA derivatives have excellent chelating ability, but the biodegradation rate is too slow; although NTA has sufficient chelating ability and good biodegradability, it seems that there are hidden dangers in safety, and the amount used in the United States has declined. At the same time, the preparatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01F17/52C08G65/48C09K23/52
Inventor 饶小平宋湛谦商士斌高宏
Owner 广东威斯达新材料有限公司
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