Micro-emulsion-type wood and bamboo mould-proof agent, as well as preparation method and application thereof

A technology of microemulsion and antifungal agent, which is applied in the direction of wood impregnation, impregnated wood, wood processing utensils, etc., can solve the problem that the performance and effect of wood and bamboo are not supported by experimental results, and the stability of wood and bamboo protective agents lacks comprehensive evaluation. The effect is not very ideal and other problems, to achieve the effect of low equipment technical requirements, low degree of crystallization, and small particle size

Active Publication Date: 2013-09-25
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing water-borne wood protective agents have the following disadvantages: firstly, highly volatile and highly toxic substances are still used as the main organic solvents in the formula, such as toluene and xylene; secondly, most patents disclose only formula components There is no comprehensive evaluation on the stability of emulsion-type or microemulsion-type wood and bamboo protectants, and the performance and effect of treating wood and bamboo are not supported by experimental results, so it is difficult to popularize and apply
Chinese patent application CN1498535 discloses a method for preparing a stable water-insoluble isothiazolinone derivative microemulsion, but the microemulsion of this formula is used in pape

Method used

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  • Micro-emulsion-type wood and bamboo mould-proof agent, as well as preparation method and application thereof
  • Micro-emulsion-type wood and bamboo mould-proof agent, as well as preparation method and application thereof
  • Micro-emulsion-type wood and bamboo mould-proof agent, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1. Materials

[0051] DCOIT (Shanghai Sanbo Biochemical Technology Co., Ltd.), 2,2,4-trimethyl-1.3 pentanediol monoisobutyrate, sodium dioctyl sulfosuccinate and castor oil polyoxyethylene ether 40 (industrial product , without purification), benzyl alcohol and oleic acid (analytical grade), deionized water.

[0052] 2. Preparation method

[0053] Take 2.5g of the original drug DCOIT and dissolve it in 5g of 2,2,4-trimethyl-1.3pentanediol monoisobutyrate. The dissolution process is completed in a water bath at 60°C. After the original drug is completely dissolved, add 1.8g benzyl alcohol, after forming a stable oil phase, slowly add 9.5g castor oil polyoxyethylene ether 40, 1.8g oleic acid and 1g dioctyl sodium sulfosuccinate in turn while stirring, in a water bath at 60°C Heating and stirring at a speed of 200rpm for 3 minutes, the preparation of the emulsifiable concentrate is completed, and after freezing for 24 hours, take 1g of the emulsifiable concentrate and ad...

Embodiment 2

[0055] Others are the same as embodiment 1, the difference is:

[0056] 2. Preparation method

[0057] Take 2g of the original drug DCOIT and dissolve it in 6g of 2,2,4-trimethyl-1.3pentanediol monoisobutyrate. The dissolution process is completed in a water bath at 70°C. After the original drug is completely dissolved, add 1.5 g benzyl alcohol, after forming a stable oil phase, slowly add 10 g castor oil polyoxyethylene ether 40, 2.5 g oleic acid and 2 g sodium dioctyl sulfosuccinate while stirring, heat and Stir at a speed of 600rpm for 10 minutes, and the preparation of the EC is completed. After freezing for 24 hours, take 1 g of the EC and add deionized water to 170 g to obtain a microemulsion antifungal agent for wood and bamboo with a DCOIT concentration of 0.05%.

Embodiment 3

[0059] Others are the same as embodiment 1, the difference is:

[0060] 2. Preparation method

[0061] Take 3g of the original drug DCOIT and dissolve it in 5.5g of 2,2,4-trimethyl-1.3pentanediol monoisobutyrate. The dissolution process is completed in a water bath at 80°C. After the original drug is completely dissolved, add 2.5g of benzyl alcohol, after forming a stable oil phase, slowly add 9.0g of castor oil polyoxyethylene ether 40, 2g of oleic acid and 1g of sodium dioctyl sulfosuccinate in turn while stirring, and heat in a water bath at 70°C Stir at a speed of 1000rpm for 5 minutes, the preparation of the emulsifiable concentrate is completed, and after freezing for 24 hours, take 1g of the emulsifiable concentrate and add deionized water to 87g to obtain a microemulsion wood and bamboo fungicide with a DCOIT concentration of 0.15%.

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Abstract

The invention relates to a micro-emulsion-type wood and bamboo mould-proof agent, as well as a preparation method and application thereof. The micro-emulsion-type wood and bamboo mould-proof agent comprises the following components in parts by weight: 1 to 200 parts of isothiazolinone original medicaments, 1 to 1,000 parts of ester solvents, 1 to 500 parts of alcohol or ester cosolvents, 1 to 1,500 parts of polyoxyethylene non-ionic surfactants, 1 to 150 parts of succinate or polyoxyethylene ether salt non-ionic surfactants, 1 to 100 parts of long-chain carboxylic acid additives, and 1 to 1,000,000 parts of water. The micro-emulsion-type wood and bamboo mould-proof agent disclosed by the invention has the advantages that the chemical agents meet the requirements on environment friendliness and no toxicity; the preparation process is simple; the crystallization degree is low; the stability is high; the particle size is small; the permeability and the mould-proof performance are high; the volume expansibility of the processed bamboo and wood is reduced and the like; the micro-emulsion-type wood and bamboo mould-proof agent is stable, effective and environmentally-friendly, and is much better than that in the prior art.

Description

technical field [0001] The invention relates to the field of wood or bamboo antifungal agents, in particular to a microemulsion type wood and bamboo antifungal agent, as well as its preparation method and application. Background technique [0002] Wood and bamboo are natural renewable, recyclable, and degradable biomaterials with beautiful texture, high strength-to-weight ratio, excellent environmental characteristics and processability, and are loved by people, so they are widely used in production and life . However, untreated wood and bamboo wood is susceptible to mildew, discoloration and other defects caused by molds such as Trichoderma, Aspergillus, Penicillium and Mucor, which seriously reduces its use value. Moreover, the resistance of fungi to wood and bamboo protective agents is also higher than that of decay fungi, so the anti-mold of wood and bamboo and related products have important research significance and application value. [0003] At present, the commonl...

Claims

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Application Information

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IPC IPC(8): B27K3/50
Inventor 曹金珍朱愿
Owner BEIJING FORESTRY UNIVERSITY
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