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Quaternary phosphonium salt bactericide supported on silica gel as well as preparation and application thereof

A bactericide and silica gel technology, applied in silica gel immobilized quaternary phosphonium salt fungicides and its preparation and application fields, can solve the problems of high cost, large environmental pollution, etc., and achieve easy operation, low dosage, low toxicity and pH value adaptation range effect

Inactive Publication Date: 2011-04-13
CHONGQING YUANDA WATER SERVICE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, one of the purposes of the present invention is to provide a bactericide for silica gel-loaded quaternary phosphonium salts, which has high-efficiency, broad-spectrum bactericidal performance, and solves the high cost and relatively large environmental pollution of existing commonly used organic resin carriers. technical problem, and can be recycled and reused, the bactericide is characterized in that: a repeating unit with a general formula I structure, two repeating units are linked by a silicon-oxygen bond, and at least one of the repeating units is independently linked to R on the silicon atom 2 Groups and groups as described in the general formula II structure:

Method used

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  • Quaternary phosphonium salt bactericide supported on silica gel as well as preparation and application thereof
  • Quaternary phosphonium salt bactericide supported on silica gel as well as preparation and application thereof
  • Quaternary phosphonium salt bactericide supported on silica gel as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take the saturated solution in step 101 as a saturated ethyl silicate solution with a modulus of 2;

[0040] The acid in step 102 is acetic acid;

[0041] Take the silica gel aging temperature in step 103 as 80°C, and the aging time as 12 hours;

[0042] Take the silica gel drying temperature in step 104 as 100°C, the drying time is 15 hours, and the silica gel powder is ground to 60 mesh;

[0043] The sintering temperature of the silica gel powder in step 105 is 600°C, and the sintering time is 8 hours;

[0044] Taking the haloalkylsiloxane in step 106 as 0.8 parts of γ-chloropropyltrimethoxysilane, the temperature is controlled to 80°C, and the reaction time is 18 hours;

[0045] The tertiary phosphine compound in step 107 is tributylphosphine, the stirring time of intermediate product A is 40 hours, and the drying temperature of intermediate product C is 60°C.

[0046] The structure of the bactericide 1 is:

[0047]

Embodiment 2

[0049] Take the saturated solution in step 101 as a saturated ethyl silicate solution with a modulus of 2.5;

[0050] Take the acid in step 102 as hydrochloric acid;

[0051] Take the aging temperature of the silica gel in step 103 as 90°C, and the aging time as 20 hours;

[0052] Take the silica gel drying temperature in step 104 as 120°C, the drying time as 20 hours, and grind the silica gel powder to 70 mesh;

[0053] The sintering temperature of the silica gel powder in step 105 is 700°C, and the sintering time is 10 hours;

[0054] Take the haloalkylsiloxane in step 106 as 1.2 parts of γ-chloropropyltriethoxysilane, control the temperature at 90°C, and the reaction time at 20 hours;

[0055] Take the tertiary phosphine compound triphenylphosphonium in step 107, the stirring time of intermediate product A is 48 hours, and the drying temperature of intermediate product C is 70°C.

[0056] The structure of the fungicide 2 is:

[0057]

Embodiment 3

[0059] Take the saturated solution in step 101 as a water glass saturated solution, with a modulus of 2;

[0060] The acid in step 102 is nitric acid;

[0061] Take the silica gel in step 103 when the temperature is 85°C during aging, and the aging time is 16 hours;

[0062] Take the silica gel drying temperature in step 104 as 110°C, the drying time is 17 hours, and the silica gel powder is ground to 80 mesh;

[0063] The sintering temperature of the silica gel powder in step 105 is 650°C, and the sintering time is 9 hours;

[0064] Take the haloalkylsiloxane in step 106 as 0.9 parts of γ-chloropropylmethyldimethoxysilane, control the temperature to 85°C, and the reaction time to be 19 hours;

[0065] The tertiary phosphine compound in step 107 is trioctylphosphine, the stirring time of intermediate product A is 44 hours, and the drying temperature of intermediate product C is 65°C.

[0066] The structure of the fungicide 3 is:

[0067]

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Abstract

The invention discloses a quaternary phosphonium salt bactericide supported on silica gel. The bactericide comprises repeating units shown in the general formula 1; two repeating units are linked by a silicon-oxygen bond, and a silicon atom of at least one repeating unit is independently linked with an R2 group and groups shown in the general formula II; silica gel and quaternary phosphonium saltare linked by a silane coupling agent and then reacted, then bactericidal active groups are loaded on the silica gel so as to obtain an insoluble silica gel bactericide; and the quaternary phosphonium salt bactericide has the advantages of firm active-group bonding, good product stability, less pollution to environment, and no toxicity. The invention also discloses a method for preparing the bactericide and a method for applying the bactericide. Experimental data shows that the bactericide has an efficient and rapid sterilization property, can be used by cyclic regeneration, and is expected to be applied to industrial and civil water treatment.

Description

Technical field [0001] The invention relates to a non-water-soluble bactericide and its preparation and application, in particular to a silica gel immobilized quaternary phosphonium salt bactericide and its preparation and application. Background technique [0002] In order to overcome the shortcomings of long-term use of water-soluble non-oxidizing bactericides, such as high toxicity, large dosage, easy foaming, and bacterial resistance, the quaternary ammonium salt group with bactericidal activity is fixed on the polymer carrier to prepare water-insoluble Fungicide. At present, many related patents have been published, such as: US4349646, US4826924, CN97116726.5. Among them, the method disclosed in CN97116726.5 is to immobilize a chloromethylated styrene-divinylbenzene resin on the resin to synthesize a polymer with the above two charge groups, which is beneficial to improve the bactericidal activity. [0003] In recent years, studies have found that quaternary phosphonium salt...

Claims

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Application Information

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IPC IPC(8): A01N57/20A01N57/22A01N25/08A01P1/00C01B33/16C02F1/50
Inventor 何世德张占梅樊星
Owner CHONGQING YUANDA WATER SERVICE
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