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A low-temperature cleaning agent suitable for fluorine-free refrigeration industry and its preparation method and application

A cleaning agent and industry technology, applied in the field of low-temperature cleaning agent and its preparation, can solve the problems of capillary blockage in refrigeration system, difficulty in rinsing with inorganic salts, harsh working environment, etc. Effect

Active Publication Date: 2021-11-05
GUANGZHOU LUODE CHEM SCI & TRADING
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Problems solved by technology

However, the inorganic salt in the formula is difficult to rinse and has a high residue. If it is used in the fluorine-free refrigeration industry, it will not only consume a lot of energy and cause a bad working environment, but also cause the capillary tube of the refrigeration system to be blocked or even scrapped after use.

Method used

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  • A low-temperature cleaning agent suitable for fluorine-free refrigeration industry and its preparation method and application
  • A low-temperature cleaning agent suitable for fluorine-free refrigeration industry and its preparation method and application

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preparation example Construction

[0026] The preparation of antirust additive in the embodiment is as follows:

[0027] Mix 25% of pure water, 35% of isooctanoic acid, and 15% of hydroxyethylethylenediamine at 100°C for 2 hours, then add 15% of triethylenetetramine, mix and react for 2 hours at 100°C, and finally add 10% ethanol, mixed and stirred at room temperature for 1 hour, and the stirring speed was 100 rpm, and the antirust additive was obtained.

Embodiment 1-2

[0029] The preparation method of embodiment 1-2 low temperature cleaning agent is as follows:

[0030] Mix water and hydroxyethylethylenediamine and stir for 0.5h, then add isooctanoic acid and stir for 0.5h, add ammonium lauryl alcohol ether sulfate and stir for 0.5h, add 2-mercaptobenzothiazole and stir for 0.5h, add cyclic Oxyalkyl modified acetylene glycol was stirred for 0.5 h, ethylene glycol butyl ether was added and stirred for 0.5 h, and antirust additive was finally added and stirred for 2 h to obtain the low-temperature cleaning agent. The stirring speed is 100 rpm. The addition amount of each component is shown in Table 1.

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Abstract

The invention belongs to the technical field of cleaning agents, and in particular relates to a low-temperature cleaning agent suitable for fluorine-free refrigeration industry and its preparation method and application. The low-temperature cleaning agent, its preparation raw materials include the following components in mass percentage: 30-40% of water, 10-20% of hydroxyethylethylenediamine, 5-15% of isooctanoic acid, 5% of ammonium lauryl alcohol ether sulfate ‑15%, 2‑Mercaptobenzothiazole 5‑15%, Oxyalkylene Modified Alkyne Diol 5‑15%, Ethylene Glycol Butyl Ether 5‑15%, Antirust Additive 5‑15%. The invention adopts a low-residue formula, which is easy to rinse, reduces the residual amount of cleaning agent on the surface of refrigeration parts, and solves the hidden danger of capillary blockage in the refrigeration system. Among them, epoxy-alkylene modified acetylene glycol and ethylene glycol butyl ether have excellent wettability, permeability, and dispersibility at room temperature, and can easily dissociate dirt from the surface of the object to be cleaned. Excellent cleaning performance can be exerted.

Description

technical field [0001] The invention belongs to the technical field of cleaning agents, and in particular relates to a low-temperature cleaning agent suitable for fluorine-free refrigeration industry and its preparation method and application. Background technique [0002] Cleaning agents used in the traditional refrigeration industry are generally made of inorganic salts (phosphates, nitrites), anionic surfactants, anti-rust additives, sodium hydroxide, potassium hydroxide, etc., but they need to be heated in actual use To 50 ℃ or above, in order to play an effective cleaning ability. However, the inorganic salt in the formula is difficult to rinse and has a high residue. If it is used in the fluorine-free refrigeration industry, it will not only consume a lot of energy, cause a bad working environment, but also cause the capillary tube of the refrigeration system to be blocked or even scrapped after use. Contents of the invention [0003] In order to overcome the shortc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D1/37C11D3/20C11D3/26C11D3/34C11D3/60
CPCC11D1/04C11D1/146C11D1/37C11D3/2068C11D3/26C11D3/349C11D11/0041
Inventor 罗伟森黎新浩罗国强黄金强张伟前
Owner GUANGZHOU LUODE CHEM SCI & TRADING
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