Surface treatment method for a substrate using denatured urushiol derived from Toxicodendron vernicifluum

一种烷基、烯基的技术，应用在使用源自漆树的改性漆酚处理基材表面领域，能够解决涂布表面光泽度降低、高引发剂含量、低聚合速度等问题，达到优异表面光泽度、优异抗菌效果、高交联速度的效果

Inactive Publication Date: 2012-11-21
POHANG IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, it has been shown that the catechol structure in urushiol due to the presence of figure 2 The side reactions (radical trapping reactions) of free radical polymerization (both thermal and photocuring) shown in content

Method used

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  • Surface treatment method for a substrate using denatured urushiol derived from Toxicodendron vernicifluum
  • Surface treatment method for a substrate using denatured urushiol derived from Toxicodendron vernicifluum
  • Surface treatment method for a substrate using denatured urushiol derived from Toxicodendron vernicifluum

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example 1

[0107] Preparation of UV coating solution

[0108] To extract urushiol from lacquer, lacquer was added to methylene chloride at a weight ratio of 1:1, and the resulting solution was stirred at about 23° C. for about 4 hours in a nitrogen atmosphere.

[0109] After stirring, the solution was filtered through a paper filter (Whatman, 100-μm pore size) and again through a polytetrafluoroethylene filter (Millipore, PTFE, 0.1-μm).

[0110] The filtered solution was dried in a vacuum oven at 20 °C to remove dichloromethane.

[0111] exist image 3 and Figure 4 The FT-IR spectra of extracted urushiol and 1 H-NMR data.

[0112] Afterwards, a monoisocyanate capable of reacting with the hydroxyl groups of the extracted urushiol is introduced to block the hydroxyl groups. The detailed description of the above steps is as follows:

[0113] Urushiol was mixed with THF at a weight ratio of 1:2 to 2, 0.1 parts by weight) in the presence of melting.

[0114] monoisocyanate (hexyl is...

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Abstract

The present invention relates to a surface treatment method for a substrate using denatured urushiol derived from Toxicodendron vernicifluum, and more specifically to one in which the reactivity of the hydroxyl group in urushiol extracted from fresh Toxicodendron vernicifluum is removed such that when it is used as a UV coating material for substrates such as steel sheets it can not only exhibit high level antimicrobial properties but can also exhibit outstanding surface-appearance and functional properties including a far-infrared radiating effect, an electromagnetic-wave shielding effect, a corrosion-resistance enhancing effect, a high crosslinking reaction rate while using a low content of photoinitiator, and outstanding surface glossiness and scratch resistance.

Description

technical field [0001] The present invention relates to a method for treating the surface of a substrate with modified urushiol derived from fresh sumac (Toxicodendron vernicifluum), and more particularly, to a method for treating a substrate with modified urushiol derived from fresh sumac surface approach, the modified urushiol can exhibit high antibacterial activity and excellent surface properties (surface appearance and functional properties), such as far-infrared radiation, blocking of electromagnetic waves, improved corrosion resistance, even when light-induced High crosslinking speed, excellent surface gloss and high scratch resistance are also obtained at low levels of lacquer, because urushiol is removed from fresh lacquer before using it as a UV coating agent for substrates (e.g. Reactivity of hydroxyl groups in extracted urushiol. Background technique [0002] Lacquer (often thought to be the Chinese lacquer tree that grows in Central Asia and the Himalayas) is c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D193/00C09D5/14
CPCC09D193/00C09D4/00C09D5/14Y10T428/31551
Inventor 刘惠珍郑仁宇边昌世李在隆金辰泰李政桓崔良镐
Owner POHANG IRON & STEEL CO LTD
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