Method for manufacturing organosilicon surfactant with T-shaped structure for pesticide

A surfactant and organosilicon technology, applied in the fields of botanical equipment and methods, organic silicon compounds, chemical instruments and methods, etc., can solve the problems of environmental and human harm, hydrogen chloride gas emission, etc., and reduce the amount of pesticides and catalysts. The effect of less amount and reducing pesticide residues

Inactive Publication Date: 2010-04-07
GUANGZHOU TINCI SILICONE TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] All need to use solvent in the synthesis step two and three of this method, comprise sherwood oil, hexane, benzene, toluene, acetylacetone, acetone, cyclohexanone etc., also have hydrogen chloride gas emission in addition, this all is harmful to environment and personnel of

Method used

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  • Method for manufacturing organosilicon surfactant with T-shaped structure for pesticide
  • Method for manufacturing organosilicon surfactant with T-shaped structure for pesticide
  • Method for manufacturing organosilicon surfactant with T-shaped structure for pesticide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Add 50g of hydrogen-containing silicone oil (n=100), 900g of hexamethyldisiloxane and 1g of concentrated sulfuric acid into a 2L four-neck flask, control the temperature at 10°C while stirring, react for 12 hours, wash and dry with water, and then carry out Purified by rectification to obtain 111 g of hydrogen-containing trisiloxane with a content of 98%.

[0042] 70g98% hydrogen-containing trisiloxane and 930g allyl polyether (m=20, n=20, R=CH 3 ) into a 2L four-neck flask, heated to 120°C under stirring with nitrogen, added 1g of platinum-allyl polyether catalyst, reacted for 2 hours, vacuumed for 30 minutes, cooled to room temperature, and obtained 980g of silicone surfactant, The structure is as follows:

[0043]

Embodiment 2

[0045] Add 150g of hydrogen-containing silicone oil (n=5), 150g of hexamethyldisiloxane and 3g of perfluorosulfonic acid into a 500ml four-port reactor, control the temperature at 50°C under stirring, cool down after 8 hours, and remove The catalyst was then purified by rectification to obtain 198g of hydrogen-containing trisiloxane with a content of 98%;

[0046] Put 98g of hydrogen-containing trisiloxane with a content of 98% and 98g of allyl polyether (m=4, n=0, R=H) in a 250ml flask, heat up to 60°C under stirring with nitrogen, and add 2g of platinum-ene Propyl polyether catalyst, reacted for 12 hours, took off the vacuum for 30 minutes, cooled to room temperature, obtained 197g organic silicon surfactant, the structure is as follows:

[0047]

Embodiment 3

[0049] Add 20g of hydrogen-containing silicone oil (n=30), 100g of hexamethyldisiloxane and 30g of strongly acidic ion-exchange resin into a 250ml flask, control the temperature at 100°C while stirring, cool down after 6 hours of reaction, and filter out the resin , and then carry out rectification and purification to obtain 27g content of 98% hydrogen-containing trisiloxane;

[0050] 20g of hydrogen-containing trisiloxane with a content of 98%, 80g of allyl polyether (m=6, n=2, R=C 2 h 5 ) into the reactor, heated to 85°C under stirring with nitrogen, added 0.2g of platinum-allyl polyether catalyst, reacted for 6 hours, vacuumed for 30 minutes, cooled to room temperature, and obtained 98g of silicone surfactant, structure as follows:

[0051]

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Abstract

The invention relates to a method for preparing an organosilicon surfactant with a T-shaped structure for a pesticide. The method comprises the following steps: (1) preparation of hydrogen containing trisiloxane, in which, full containing hydrogen silicone oil, hexamethyl disiloxane and catalyst are added into a reactor, the temperature of the mixture is controlled to be between 10 and 100 DEG C with stirring, after reacting for 0.5 to 12 hours, the mixture is cooled, and then distilled and purified to prepare the hydrogen containing trisiloxane; and (2) synthesis of the organosilicon surfactant, in which, the hydrogen containing trisiloxane and allyl polyether are added into the reactor, are heated to a temperature of between 60 and 120 DEG C under stirring in nitrogen, catalyst platinum-allyl polyether is added into the reactor to react for 2 to 12 hours, and the mixture is devolatilized in vacuum for 30 minutes and is cooled to a room temperature to prepare the organosilicon surfactant. The method has a simple process, easy industrial production and high product purity without cross linked polymer impurities.

Description

technical field [0001] The invention relates to a preparation method of a T-structure organic silicon surfactant, in particular to a preparation method of a T-structure organic silicon surfactant for pesticides. Background technique [0002] Surfactant is one of the important adjuvants commonly used in contemporary pesticides. It is an additive to enhance the spreading and adhesion of medicinal liquid on the plant surface. We know that most of the plant surface is composed of wax-containing cornea, and these substances constitute a low-energy surface, and most pesticides are applied in the form of aqueous solution. Since the surface tension of water is higher than that of this low-energy surface, usually, the liquid medicine will aggregate into droplets on the plant surface like water droplets on lotus leaves, which cannot be spread, and the droplets are easily released from the plant surface. Drips on the face. In this way, the contact area between the pesticide and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/54C07F7/08A01N25/30C08G65/336C08G65/48C09K23/54
Inventor 张宇张利萍林祥坚杨思广唐涛王哲
Owner GUANGZHOU TINCI SILICONE TECHNOLOGY CO LTD
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