CN1162525C - Water-base composite detergent for liquid crystal - Google Patents
Water-base composite detergent for liquid crystal Download PDFInfo
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- CN1162525C CN1162525C CNB011149108A CN01114910A CN1162525C CN 1162525 C CN1162525 C CN 1162525C CN B011149108 A CNB011149108 A CN B011149108A CN 01114910 A CN01114910 A CN 01114910A CN 1162525 C CN1162525 C CN 1162525C
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- liquid crystal
- alkyl
- ether
- cleansing composition
- fatty alcohol
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Abstract
The present invention relates to a cleaning method for residual liquid crystal after a water base liquid crystal cleaning agent composition and a liquid crystal display are encapsulated. The cleaning agent composition comprises the following components of 10 to 20% of fatty alcohol polyoxyethylated alkyl ether, 5 to 15% of fatty alcohol polyoxyethylene polyoxypropylene ether, 1 to 10% of wetting agents, 2 to 15% of alkyl alcohol amine, 10 to 20% of glycol alkyl ether, 0.1 to 0.5% of organic complexing agents and overmeasure deionized water. The cleaning agent of the present invention has no toxicity and corrosiveness, does not pollute the environment, does not destroy the ozonosphere at high altitudes, does not cause the greenhouse effect, and can reduce the cleaning cost.
Description
The present invention relates to a kind of water-base composite detergent for liquid crystal, and the purging method of the residual liquid crystal in liquid-crystal display encapsulation back, used in electronic industry clean-out system technical field belonged to.
Liquid-crystal display is in the course of processing, go up on its surface and slit is interior can stain various impurity, as dirts such as liquid crystal residual in display screen surface and the slit behind the can liquid crystal and finger mark, dust granules, generally all be to be adsorbed on the glass surface by electrostatic attraction and Van der Waals force.For residual liquid crystal dirt, generally be to adhere to into the thin even or uneven liquid crystal rete of one deck on glass surface or in the display screen slit.Because the characteristic of liquid crystal itself, and the difference of can complete processing, it is also inequality that it cleans complexity, generally is that slit is narrow more, and residual quantity is big more, and residual liquid crystal is difficult more to be removed.Liquid-crystal display industry occupies critical role as the basic activity of information industry and important export-oriented hi-tech industry in Chinese national economy.The cleaning of liquid crystal display is a committed step in the production of liquid crystal displays, and purpose is the liquid crystal residue of removing after encapsulating, the existence meeting corrosion target lead-in wire of residue, thus hinder the paster operation to have a strong impact on the quality and the life-span of liquid-crystal display.Present most production of liquid crystal displays enterprise is with fluorine Lyons (CFC-113), 1,1, ozone-depleting materials (ODS) such as 1-trichloroethane, tetracol phenixin are clean-out system, because it is good that they have chemical stability, toxicity is little, do not burn, and surface tension is less, do not damage being cleaned material and can keeping many advantageous characteristic such as strong perviousness, rapid-drying properties, be widely used as the clean-out system of kinescope, printed circuit board, electrovacuum, semi-conductor, electronic machine, precision component, liquid-crystal display etc. so far.But the ozonosphere in these ODS material havoc earth high-altitudes, the harm humans ecotope is that time limit stops material that to produce and use in the world.In recent years, also develop some short-term surrogates both at home and abroad, as Hydrochlorofluorocarbons (HCFC), perfluoroparaffin (PFC) and other halogenated solvents etc., but it still damages the ozone layer, and also will be eliminated to the year two thousand twenty, is no more than the year two thousand forty the latest.Some organic solvent also can be used as the surrogate of CFC, but cleaning performance is good not as the CFC cleaning performance, and flash-point is low, inflammable, explosive, and some is also toxic simultaneously, and operating environment is had relatively high expectations.Therefore people's expectation develop can substitute CFC high performance non-halogen be clean-out system, but do not have such clean-out system openly to report up to now as yet with excellent cleaning performance.
The objective of the invention is to overcome the shortcoming of prior art, a kind of nontoxic non-corrosiveness is provided, the water-base composite detergent for liquid crystal of readily biodegradable reaches the method with its residual liquid crystal in scavenging solution crystal display encapsulation back.
Cleansing composition of the present invention basic composition is:
Weight percentages (%)
A. aliphatic alcohol polyethenoxy alkyl oxide 10-20
B. aliphatic alcohol polyethenoxy polyethenoxy ether 5-15
C. wetting agent 1-10
D. alkyl alcoholamine 2-15
E. ethylene glycol alkyl oxide 10-20
F. complexing agent 0.1-0.5
G. deionized water surplus
Aliphatic alcohol polyethenoxy alkyl oxide A polyoxyethylene number of the present invention is 8-12, and the Fatty Alcohol(C12-C14 and C12-C18) carbon number is 12-16, and the alkyl carbon number is 1-4.
Aliphatic alcohol polyethenoxy polyethenoxy ether B of the present invention is a segmented copolymer, and its polyoxyethylene number is 4-8, and the polyoxypropylene number is 3-6, and the Fatty Alcohol(C12-C14 and C12-C18) carbon number is 12-14.
Wetting agent C of the present invention is a fatty alcohol-polyoxyethylene ether, and the Fatty Alcohol(C12-C14 and C12-C18) carbon number is 8-10, and the polyoxyethylene number is 5-7.
Alkyl alcoholamine D of the present invention can be an alkyl alcoholamine, dialkyl group hydramine or trialkyl hydramine, and alkyl is ethyl, propyl group or butyl.
Described ethylene glycol alkyl oxide E can be an alkyl oxide, dialkyl ether, and alkyl is ethyl, propyl group or butyl.
The complexing agent F that the present invention uses is organic chelate and agent, as ethylenediamine tetraacetic acid (EDTA) (EDTA) and sodium salt or Trisodium Citrate.
In all raw materials, aliphatic alcohol polyethenoxy alkyl oxide, aliphatic alcohol polyethenoxy polyethenoxy ether, wetting agent are colourless to light yellow transparent liquid, and these tensio-active agents are water-soluble fully, do not fire, not quick-fried, and readily biodegradable is the main component of clean-out system.The complexing agent that the present invention uses is organic chelate and agent, as ethylenediamine tetraacetic acid (EDTA) (EDTA) and sodium salt thereof, Trisodium Citrate, is white particle or Powdered, except can chelating Ca
2+, Mg
2+Outward, can also chelating Fe
3+, Cu
2+Etc. many other metal ions, thereby prevent the consumption of tensio-active agent, also overcome the overfertilization phenomenon of using the deterioration water quality that the phosphoric acid salt inorganic assistant agent causes simultaneously, environment is not produced pollution.Described ethylene glycol alkyl oxide can be an alkyl oxide, also can be dialkyl ether, can be ethyl, propyl group or butyl ether, is colourless transparent liquid, can dissolve dirt, also can regulate the viscosity of clean-out system.Described alkyl alcoholamine is colourless or light yellow transparent liquid, can certain solvency action be arranged to dirt, also can regulate the pH value of clean-out system.
With above-mentioned raw materials heating for dissolving under 40-60 ℃ of temperature, add above-mentioned each component one by one, make its whole dissolvings, can obtain the light yellow liquid of homogeneous transparent, can be mixed with arbitrary proportion with water, and nontoxic, non-corrosiveness, free from environmental pollution, its key technical indexes is:
Outward appearance and yellow homogeneous transparent liquid of light color
PH value 8.0～9.0 (25 ℃)
Viscosity 10～60 centipoises (25 ℃)
Proportion (25 ℃ of water=1) 1.00 ± 0.02
Surface-active substance content is greater than 35%
-10～+ 50 ℃ of stability are stable
Harmful metal ion content is less than 1ppm
The cleansing composition of preparation can replace the ODS clean-out system according to the present invention, and following advantage is arranged:
1, to be cleaned the substance dissolves of removing good to various, and clean range is wide;
2, safe owing to be aqua, do not fire not quick-fried, euosmia invariably;
3, use and can directly discharge, easy to use;
4, not phosphorous and halogen is free from environmental pollution, does not destroy the high-altitude ozonosphere:
5, because usage ratio is less, therefore can reduce cost;
6, cleaning performance reaches the ODS cleaning performance, and has no adverse effect to being cleaned thing.
When omitting liquid crystal outside when being applied to clean packaged liquid crystal display, can easier clean up, effect is suitable when cleaning with ODS.
When with this cleansing composition scavenging solution crystal display, said composition and the deionized water of available 5-10% are mixed with scavenging solution, soak or ultrasonic cleaning in the time of 40-60 ℃, rinse well with deionized water then to get final product.
The invention will be further described below in conjunction with embodiment.
100 kilograms of embodiment 1. clean-out systems
Weight percentages (%)
A. the aliphatic alcohol polyethenoxy methyl ether is 15 kilogram 15
(produce in Shijiazhuang, light yellow transparent liquid)
B. the aliphatic alcohol polyethenoxy polyethenoxy ether is 10 kilogram 10
(produce in Hangzhou, light yellow transparent liquid)
C. fatty alcohol-polyoxyethylene ether is 5 kilogram 5
(is produced from the auxiliary reagent factory, Shanghai, light yellow transparent liquid)
D. ethylene glycol monobutyl ether (analytical pure) is 15 kilogram 15
E. thanomin (analytical pure) is 5 kilogram 5
F. ethylenediamine tetraacetic acid (EDTA) (analytical pure) is 0.15 kilogram 0.15
G. deionized water is 49.85 kilogram 49.85
Above-mentioned clean-out system outward appearance is light yellow homogeneous transparent liquid, and proportion is 1.00, and viscosity is 17 centipoises, and the pH value is cleaned with Ultrasonic Cleaners for 8.46., remains in outer liquid crystal and other impurity in the time of effectively cleaning packaged liquid crystal display.When remaining in outer liquid crystal when using this cleansing composition to clean packaged liquid crystal display, cleaning performance is compared with the ODS clean-out system, and the result is as follows:
| Clean-out system | Clean number of packages | Clean the front surface situation | Clean the rear surface situation | Qualification rate |
| Embodiment 1 | 280 | There are a large amount of liquid crystal residual | 11 have a small amount of liquid crystal residual | 96.1％ |
| CFC113 | 163 | There are a large amount of liquid crystal residual | 9 have a small amount of liquid crystal residual | 94.5％ |
Embodiment 2. is as described in the embodiment 1, and different is that component A is the aliphatic alcohol polyethenoxy butyl ether.
Embodiment 3. is as described in the embodiment 1, and different is that component F is a Trisodium Citrate, and component E is a glycol ethyl ether.
100 kilograms of embodiment 4. clean-out systems
Weight percentages (%)
A. the aliphatic alcohol polyethenoxy methyl ether is 18 kilogram 18
(produce in Shijiazhuang, light yellow transparent liquid)
B. the aliphatic alcohol polyethenoxy polyethenoxy ether is 8 kilogram 8
(produce in Hangzhou, light yellow transparent liquid)
C. fatty alcohol-polyoxyethylene ether is 4 kilogram 4
(auxiliary reagent factory, Shanghai, light yellow transparent liquid)
D. ethylene glycol monobutyl ether (analytical pure) is 18 kilogram 18
E. thanomin (analytical pure) is 2 kilogram 2
F. ethylenediamine tetraacetic acid (EDTA) (analytical pure) is 0.15 kilogram 0.15
G. deionized water is 49.85 kilogram 49.85
Above-mentioned raw materials is dissolved at 50-70 ℃ of temperature range internal heating, stir, obtain yellow homogeneous transparent liquid through static.When using cleansing composition of the present invention to clean packaged liquid crystal display to remain in outer liquid crystal, cleaning performance compared with the prior art, the result is as follows:
| Clean-out system | Cleaning temperature (℃) | Scavenging period (S) | Cleaning rate (%) |
| CFC-113 | 45-50 | 285 | 95.8 |
| Embodiment 4 | 45-50 | 285 | 96.2 |
Embodiment 5. is as described in the embodiment 4, and different is that component A is the aliphatic alcohol polyethenoxy butyl ether, and E is a trolamine.
Embodiment 6. is as described in the embodiment 4, and component D is an ethylene glycol monomethyl ether, and E is a diethanolamine.
Claims (8)
1. a water-base composite detergent for liquid crystal is characterized in that, basic composition is:
Weight percentages (%)
A. aliphatic alcohol polyethenoxy alkyl oxide 10-20
B. aliphatic alcohol polyethenoxy polyethenoxy ether 5-15
C. fatty alcohol-polyoxyethylene ether 1-10
D. alkyl alcoholamine 2-15
E. ethylene glycol alkyl oxide 10-20
F. complexing agent 0.1-0.5
G. deionized water surplus.
2. cleansing composition as claimed in claim 1 is characterized in that, described aliphatic alcohol polyethenoxy alkyl oxide A, and the polyoxyethylene number is 8-12, and the Fatty Alcohol(C12-C14 and C12-C18) carbon number is 12-16, and the alkyl carbon number is 1-4.
3. cleansing composition as claimed in claim 1 is characterized in that, described aliphatic alcohol polyethenoxy polyethenoxy ether B is a segmented copolymer, and the polyoxyethylene number is 4-8, and the polyoxypropylene number is 3-6, and the Fatty Alcohol(C12-C14 and C12-C18) carbon number is 12-14.
4. cleansing composition as claimed in claim 1 is characterized in that, the Fatty Alcohol(C12-C14 and C12-C18) carbon number of described fatty alcohol-polyoxyethylene ether is 8-10, and the polyoxyethylene number is 5-7.
5. cleansing composition as claimed in claim 1 is characterized in that, described alkyl alcoholamine D is an alkyl alcoholamine, dialkyl group hydramine or trialkyl hydramine, and alkyl is ethyl, propyl group or butyl.
6. cleansing composition as claimed in claim 1 is characterized in that, described ethylene glycol alkyl oxide E is an alkyl oxide or dialkyl ether, and alkyl is ethyl, propyl group or butyl.
7. cleansing composition as claimed in claim 1 is characterized in that, employed complexing agent F is edta and its sodium salt or Trisodium Citrate.
8. the method for the residual liquid crystal in scavenging solution crystal display encapsulation back is mainly used in and cleans behind the can liquid crystal residual liquid crystal and other pollutents in the display screen surface and slit, and comprise and use the described cleansing composition of claim 1,
Clean and use this detergent solution to clean or soak with Ultrasonic Cleaners, use deionized water rinsing then, hot blast or vacuum-drying get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011149108A CN1162525C (en) | 2001-04-30 | 2001-04-30 | Water-base composite detergent for liquid crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011149108A CN1162525C (en) | 2001-04-30 | 2001-04-30 | Water-base composite detergent for liquid crystal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1316496A CN1316496A (en) | 2001-10-10 |
| CN1162525C true CN1162525C (en) | 2004-08-18 |
Family
ID=4661512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011149108A Expired - Fee Related CN1162525C (en) | 2001-04-30 | 2001-04-30 | Water-base composite detergent for liquid crystal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1162525C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100543122C (en) * | 2002-04-18 | 2009-09-23 | 狮王株式会社 | Aqueous liquid cleaner compositions for LCD panels |
| CN100351361C (en) * | 2004-06-23 | 2007-11-28 | 比亚迪股份有限公司 | Water-based liquid-crystal cleaning agent |
| CN100350030C (en) * | 2005-09-15 | 2007-11-21 | 山东大学 | Semi-water base detergent specially for liquid crystal and its prepn process |
| CN1995305B (en) * | 2005-12-26 | 2010-06-23 | 比亚迪股份有限公司 | Water-soluble liquid crystal cleaning agent composition and its preparing method |
| JP4246252B2 (en) * | 2007-07-10 | 2009-04-02 | 花王株式会社 | Surfactant composition |
| CN104028164B (en) * | 2013-03-08 | 2016-08-03 | 上海天坛助剂有限公司 | A kind of environment-friendly type compounds penetrating agent |
| CN104804881A (en) * | 2015-05-20 | 2015-07-29 | 龚灿锋 | Cleaning liquid for display screen of computer |
| CN104893830B (en) * | 2015-06-29 | 2018-01-30 | 邓婷 | Electronic device display screen cleaning fluid |
| CN105255621A (en) * | 2015-09-27 | 2016-01-20 | 常州市奥普泰科光电有限公司 | Preparation method of semi water-based liquid crystal cleaning compound |
| CN108559660A (en) * | 2018-06-25 | 2018-09-21 | 安徽全兆光学科技有限公司 | A kind of liquid crystal display detergent |
| CN108865539A (en) * | 2018-07-06 | 2018-11-23 | 安徽腾奎智能科技有限公司 | Medical X-ray photo-electric display cleaning agent |
-
2001
- 2001-04-30 CN CNB011149108A patent/CN1162525C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN1316496A (en) | 2001-10-10 |
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