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Copper dimethyldithiocarbamate wood preservative

A technology of sodium dimethyl dithiocarbamate and dimethyl dithioamino group is applied in the field of copper dimethyl dithiocarbamate wood preservatives, which can solve the problems of poor anti-loss performance and restricting the use of preservative wood. , to achieve the effect of strong anti-loss, reduce production labor and equipment costs, and improve anti-corrosion ability

Inactive Publication Date: 2015-11-11
FUJIAN ZHANGPING KIMURA FORESTRY PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of water-soluble salt preservative has extremely poor anti-loss performance, which limits the use of this type of preservative wood in outdoor environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] First add 30kg copper dimethyl dithiocarbamate (6.27kg divalent copper ions) and 15kg acetone to 51.24kg water for full solvent, then add 3.76kg didodecanyl dimethyl bromide to obtain The effective concentration is about 10% copper dimethyl dithiocarbamate wood preservative wood preservative water-soluble preparation. In batch production, the materials are fed in sequence and in proportion, fully stirred and reacted in the stainless steel reactor for 2-3 hours, and then filled after cooling.

Embodiment 2

[0016] Add 25.2kg of copper sulfate (containing 10kg of divalent copper ions) and 16kg of sodium dimethyl dithiocarbamate to 117.48kg of water, mix and react fully, then fully dissolve with 38.3kg of 60% acetone solution, and then add 3.02kg of Sodium dodecylbenzene sulfonate can be used to prepare copper dimethyl dithiocarbamate wood preservative wood preservative water-soluble preparation with an effective concentration of about 10%.

Embodiment 3

[0018] In 65.64kg of water, first add 54.36kg of aqueous copper chloride with a copper chloride content of 78% (about 42.4kg of copper chloride, that is, 20kg of divalent copper ions) and 20kg of sodium dimethyl dithiocarbamate, and then add 50kg of acetone is fully dissolved, and then 10kg of cocoyl trimethylammonium chloride is added to obtain a water-soluble preparation of copper dimethyl dithiocarbamate wood preservative wood preservative with an effective concentration of about 15.6%.

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Abstract

The invention relates to a copper dimethyldithiocarbamate wood preservative. The copper dimethyldithiocarbamate wood preservative is a solvent prepared from effective components and water. The effective components comprise, by weight, 16%-30% of bivalent copper ions, 0-32% of dimethyl carbamodithioic acid, 40%-60% of acetone and 4%-15% of surface active agent, and the bivalent copper ions and dimethyl carbamodithioic acid react to obtain copper dimethyldithiocarbamate. The copper dimethyldithiocarbamate wood preservative is formed by the bivalent copper ions and dimethyl carbamodithioic acid (SDDC), acetone is adopted as a solvent, and the preservative for forming preservative-treated wood at a time is formed. The preservative has the good corrosion preventing and termite preventing performance, has no toxic effect on people or environment, and is good in loss resisting performance. Due to the fact that the surface active agent is added, the corrosion preventing capacity of a preparation can be effectively improved, and the stability and penetrating performance of the preparation are guaranteed.

Description

technical field [0001] The present invention relates to wood preservatives, in particular to copper dimethyl dithiocarbamate wood preservatives. Background technique [0002] my country's preservative wood has begun to popularize, but so far, the most commonly used water-soluble preservatives are still CCA (main chemical composition copper chromium arsenic), ACQ (alkyl copper ammonium compound), CA (copper azole) etc., accounting for more than 90% of the total amount of preservatives used. However, these preservatives have certain shortcomings. For example, CCA contains toxic elements such as chromium and arsenic, which are harmful to the environment. At the same time, these types of preservative wood become darker due to the presence of copper ions, losing the natural color of wood. Therefore, people are constantly looking for environmentally friendly, colorless wood preservatives, such as water-soluble salts such as borides. However, this type of water-soluble salt prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27K3/52A01N47/14A01P1/00
Inventor 黄键张益宏陈云峰
Owner FUJIAN ZHANGPING KIMURA FORESTRY PROD
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