CN100393862C - Aqueous liquid cleaner compositions for LCD panels - Google Patents
Aqueous liquid cleaner compositions for LCD panels Download PDFInfo
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- CN100393862C CN100393862C CNB2005101259279A CN200510125927A CN100393862C CN 100393862 C CN100393862 C CN 100393862C CN B2005101259279 A CNB2005101259279 A CN B2005101259279A CN 200510125927 A CN200510125927 A CN 200510125927A CN 100393862 C CN100393862 C CN 100393862C
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Abstract
An aqueous liquid cleaner composition for LCD panels is provided. The composition is capable of effectively removing liquid crystal material. The composition comprises components (A)-(D) and a specific amount of water. The component (A) is expressed as RR1CH(CH2)No(AO)Mh (R and R1 are a C1-C8 alkyl group; as n=1 (2), the total carbon number of R and R1 is 9 (8); n=1 or 2; AO is C2-C4 oxyalkylene; and m=2-10), having an amount of 5-60 wt%. The component (B) is expressed as RR1CH(CH2)No(AO)Jh (j=12 to 30), having an amount of 1-25 wt%. The component (C) is expressed by R2O(AO)Kr3 (R2 includes a C1-C6 alkyl group, R3 includes a hydrogen atom, and k=1-5), having an amount of 1-20 wt%. The component (D) is a C8-C20 hydrocarbon compound, having an amount of 1-10 wt%.
Description
The application is to be on April 16th, 2003 applying date, and application number is 03122204.8, and denomination of invention is divided an application for " aqueous liquid cleaner compositions for LCD panels ".
Technical field
The invention relates to a kind of water-based detergent composition for liquid that is used for the scavenging solution crystal panel.
Background technology
Liquid crystal panel originally promptly has the low advantage of current consumption, and adding in recent years has considerable progress at technical elements such as height contrastizations, so be used for showing multiple image.For instance, in the extensive fields such as small panel of products such as computer terminal indicating meter, TV screen and mobile phone, its application is all very common.
In typical liquid crystal panel technology, make two sheet glass substrates at a distance of the following predetermined distance of 10 μ m, and bind two plate bases with solid, make and wherein form a hollow space, then liquid crystal material is enclosed in this hollow space.Above-mentioned two sheet glass substrate inside are provided with the electrode that display text and image are used, and it is made of transparent conductive film, and when applying control thereon and using electrical signal, i.e. the demonstration of may command literal and image.
In the technology of above-mentioned liquid crystal panel, the then outside of part of two plate bases can stay micron-sized little width unavoidably, and can't produce a space with avoiding.Therefore, when liquid crystal material was injected hollow space between two sheet glass substrates, liquid crystal material can be invaded in this space because of wicking action.Because the pollutent in the atmosphere can be dissolved in the liquid crystal material space in, and these spaces are applying electrical signal to transparency electrode in the position just, and with the electrode terminal of the insulating separately whereabouts of arranged in high density, so can cause the problem of insulativity deterioration.Therefore, the liquid crystal material in the intrusion space must be cleaned and remove.
Yet, because the substrate of gap interval is very narrow below 10 μ m, so as desiring to remove fully the liquid crystal material of intrusion, employed clean-out system must have the clean ability of height.In the known clean-out system that can be used for this, effect preferably is chloro-carbon solvents such as freon (Flon), trichloroethane, trieline, zellon and methylene dichloride.But, because the control of chloro-carbon solvent is a ring very important in world's environmental protection scheme, so greatly limited in the use.
For this reason, substitute in development under the height requirement of clean-out system, some can replace the novel detergent of aforementioned chloro-carbon solvent to be developed, it is the solvent of hydrocarbon, or the mixed component of hydrocarbon cosolvent and glycol ether, openly communique flat 10-25495 number is described in early days as the Japanese patent application case.Yet, because the flammable height of this kind clean-out system, so rather difficult on handling.
In addition, along with the densification Progress in technique of liquid crystal panel in recent years, the spacing of aforementioned interspace is narrower again, adds and the demand that promotes production capacity is arranged, and cleans ability so clean-out system must have at short notice the height of ablution crystal panel.Moreover, for improving the production qualification rate of liquid crystal panel, be not only the liquid crystal material of invading the gap, this clean-out system also must possess the ability of the foreign matter on clean electrode terminal surface.
In detail, in the technology of liquid crystal panel, usually the mother metal glass cutting must be become the glass substrate of bulk, and meeting produces a large amount of powder (hereinafter being generally called glass powder (cullet)) in cutting process, it will be attached to the surface of electrode terminal, and greatly hinder thereafter packaging process, remove so must clean.
The Superficial Foreign Body of glass powder and so on usually only with Intermolecular Forces attached on the liquid crystal panel, but also might make wedding agent, and closely attached on the liquid crystal panel, the clean-out system that therefore can remove Superficial Foreign Body must have higher clearing power with liquid crystal material.The clean-out system that this glass powder is used for example is Japanese patent application case openly communique flat 5-271699 number, flat 7-305093 number and 2001-181699 number described person in early days.Yet its employed alkaline cleaner not only has the possibility of destroying liquid crystal panel, and does not clean the effect of liquid crystal material fully, makes wedding agent and the glass powder of close attachment on liquid crystal panel so be difficult to remove with liquid crystal material.
As mentioned above, also do not have a kind of burden that environment is caused so far and toxicity is little, flammable low, and can clean the liquid crystal material of intrusion space part and the high clearing power liquid crystal panel clean-out system of the foreign matter on the liquid crystal panel electrode terminal surfaces simultaneously.
On the other hand, be that the demand of color liquid crystal panel increases hastily in response to the display quality requirement of PC, mobile phone and PDA etc. in recent years.Therefore, be used for the super of passive type panel and reverse digit group type (STN) liquid crystal material except known, the thin film transistor (TFT) that is used for active panel also has development with liquid crystal material.Used stn liquid crystal material is for to have with cyano group (cyano group) be the substituent aromatics of representative, and the TFT liquid crystal material is that to have with the fluorine atom be the substituent aromatics of representative.
Because the molecular structure and the rerum natura of stn liquid crystal material and TFT liquid crystal material are different, so must use different clean-out systems to be cleaned.In detail, the solvent that the stn liquid crystal material can aforementioned hydrocarbon, or the mixed component of hydrocarbon cosolvent and glycol ether cleans effectively, but the TFT liquid crystal material is then not all right, and must use different clean-out systems to clean.
Yet, for improving the productivity of liquid crystal panel, clean constituent as its demand now applicable to various type of the different plurality of liquid crystals material of molecular structure transitivity.But, up to now, also there is not a kind of good clearing power that can effectively clean the plurality of liquid crystals material that has, and the burden that environment is caused and toxicity is little, flammable low again cleaner compositions.
Summary of the invention
In view of this, one of the object of the invention is for proposing a kind of aqueous liquid cleaner compositions for LCD panels, it can remove the liquid crystal material in the space of invading the liquid crystal face effectively, and glass powder etc. is attached to the foreign matter on the electrode terminal surface of liquid crystal panel, burden and the toxicity that environment is caused is little simultaneously, and combustibility is also low.Another object of the present invention is for proposing a kind of aqueous liquid cleaner compositions for LCD panels, and it can effectively be removed because of molecular structure difference and cause the different plurality of liquid crystals material of rerum natura.
For reaching above-mentioned purpose, the contriver finds after further investigation, the cleaner compositions that contains following compositions can be removed the liquid crystal material in the space of invading liquid crystal panel effectively, simultaneously glass powder etc. is also had the quite high ability of soaking into attached to the foreign matter of substrate surface, and can effectively remove it.Those compositions comprise the specific non-ionic surfactant with side chain, specific glycol ether compound and hydrocarbon polymer.Simultaneously, the cleaner compositions that contains hydrocarbon polymer, specific glycol ether, teepol and methyl-sulphoxide (DMSO), its clearing power does not have considerable change because of the physical difference of stn liquid crystal material and TFT liquid crystal material, so can effectively remove this two.Above-mentioned cleaner compositions promptly is a content of the present invention.
In detail, the present invention proposes a kind of aqueous liquid cleaner compositions for LCD panels:
Comprise that composition (A), (D) reach (E) and the water of specified quantitative, wherein
Composition (A) is the compound shown in the general formula (1), and content is 5～60wt%:
RR
1CH(CH
2)
nO(AO)
mH (1)
Wherein R and R
1Be the alkyl of carbon number 1～8, and when n=1, R and R
1The carbon number summation more than or equal to 4 and smaller or equal to 9; When n=2, R and R
1The carbon number summation more than or equal to 3 and smaller or equal to 8; N is 1 or 2, and AO is an oxyethylene group, or uses oxyethylene group and oxypropylene group with, and m is 2～10;
Composition (D) is the hydrocarbon polymer of carbon number 10～14, content 3～40wt%; And composition (E) is following general formula (5) or (6) represented teepol, or the alkyl-sulphate of average carbon number 10～20, and content is 3～20wt%.
R wherein
6～R
9Alkyl or alkenyl for identical or different carbon number 3～22.
Embodiment
Hereinafter will describe particular content of the present invention in detail.As mentioned above, first kind of aqueous liquid cleaner compositions for LCD panels of the present invention comprises: the composition (D) of the composition (B) of the composition of 5～60wt% (A), 1～25wt%, the composition (C) of 1～20wt%, 1～10wt%, and the water of specified quantitative.
In above-mentioned composition, when the content of composition (A) is lower than 5wt%, the power of impregnation of clean-out system will descend, and may reduce the clean effect of Superficial Foreign Bodies such as glass powder; When content surpassed 60wt%, the eccysis of clean-out system promptly may significantly reduce.When the content of composition (B) was lower than 1wt%, the stability of liquid may descend, and caused its cloud point (clouding point) to reduce; And when content surpassed 25wt%, the liquid stabilising under the low temperature may reduce; Thus, the content of composition (B) is preferably 5～15wt%.When the content of composition (C) is lower than 1wt%, may descend to the clearing power of liquid crystal material; And when content surpassed 20wt%, the stability of liquid may reduce; Thus, the content of composition (C) is preferably 3～15wt%.When the content of composition (D) is lower than 1wt%, may significantly descend to the clearing power of liquid crystal material; And when content surpassed 10wt%, the stability of liquid may descend, and caused phenomenon such as cloud point reduction; Thus, the content of composition (D) is preferably 1～6wt%.On the other hand, there is no particular restriction for the addition of water, but its content in constituent is preferable at least more than 10wt%, to reduce the combustibility of constituent.
Composition (A) is the oxyalkylene group affixture of branch's primary alcohol of middle long-chain, shown in general formula (1):
RR
1CH(CH
2)
nO(AO)
mH (1)
Wherein, R and R
1Be the alkyl of carbon number 1～8, and when n=1, R and R
1The carbon number summation smaller or equal to 9; When n=2, R and R
1The carbon number summation smaller or equal to 8; N is 1 or 2, and AO is the oxyalkylene group of carbon number 2～4, and m is 2～10.
Above-mentioned R and R
1So long as the alkyl of carbon number 1～8, and when meeting n=1, R and R
1The carbon number summation smaller or equal to 9; During n=2, R and R
1The carbon number summation get final product smaller or equal to 8 condition, there is no particular restriction, and can be: methyl, ethyl, propyl group, butyl, amyl group, hexyl, octyl group, isobutyl-, three grades of butyl, isopentyl, isohexyl and iso-octyl or the like.In detail, the example of branch's primary alcohol of long-chain comprises in aforementioned: 2-Ethylhexyl Alcohol, 2-ethyl enanthol, 2-ethyl butanol, 3-ethylhexanol, 3-ethyl enanthol, 3-ethyl butanol, 2-methyl-n-amyl carbinol, 2-isoocanol, 2-methyl octanol, 2-methyl nonyl alcohol and 2-methyl decyl alcohol or the like, wherein the preferably is 2-Ethylhexyl Alcohol and 2-methyl decyl alcohol.In addition, synthetic alcohols also can use, and it for example is Diadol 9 and Diadol 11 that Mitsubishi Chemical Ind produces.Because these synthetic alcohols contain branch's primary alcohol of 30～50wt%, so be applicable in this example.
In addition, AO is the oxyalkylene group of carbon number 2～4, can be oxyethylene group, oxypropylene group or oxybutylene base, or uses wherein more than one with.But, AO preferable pure be oxyethylene group, or use oxyethylene group and oxypropylene group with.In this example, the addition mole number m of oxyalkylene group is 2～10, is preferably 2～8.When the addition mole number less than 2 the time, the stability of liquid may be low excessively; And when the addition mole number greater than 10 the time, its detergency may be low excessively, particularly for glass powder.
Then, composition (B) also is the oxyalkylene group affixture of branch's primary alcohol of middle long-chain, shown in general formula (2):
RR
1CH(CH
2)
nO(AO)
jH (2)
Wherein, R, R
1, n and AO definition with identical before, and j is 12～30.R, R herein
1, n and AO variation with the compound shown in the general formula (1) is identical before.In addition, the addition mole number j of oxyalkylene group is 12～30, is preferably 15～20, and when the addition mole number is outside this scope, may cause the stability of liquid to reduce, and cloud point is descended.
Mentioned component (C) is the oxyalkylene group affixture of short-chain alkyl (thiazolinyl) monohydroxy-alcohol, phenol or phenylcarbinol, shown in general formula (3):
R
2O(AO)
kR
3(3)
R wherein
2Be alkyl, the phenyl or benzyl of carbon number 1～6, R
3Be the alkyl of hydrogen atom or carbon number 1～6, and k is 1～5, and the definition of AO is with identical before.
In composition (C), the alkyl of carbon number 1～6 and the example of AO are identical with the cited person of declaratives of the compound of general formula (1) before.In addition, the addition mole number k of oxyalkylene group is 1～5, is preferably 1～3, and when the addition mole number is outside this scope, may descend to the clearing power of liquid crystal material.
Mentioned component (D) is the hydrocarbon polymer of carbon number 8～20, be preferably the hydrocarbon polymer of carbon number 10～14, and be more preferred from paraffinic hydrocarbon (paraffin) or olefines (olefin) hydrocarbon polymer, for example be: octane, n-decane, n-dodecane, n-tetradecane, n-hexadecane, Octadecane, octane-iso, Permethyl 99A., isooctadecane, or the unsaturated compound of corresponding above-mentioned each alkanes.
As described above, second kind of aqueous liquid cleaner compositions for LCD panels of the present invention comprises: the composition (D) of the composition of 5～60wt% (A), 3～40wt%, the composition (E) of 3～20wt%, and the water of specified quantitative.In above-mentioned composition, when the content of composition (A) is lower than 5wt%, the power of impregnation of clean-out system will descend, and may reduce the clean effect of Superficial Foreign Bodies such as glass powder; And when content surpassed 60wt%, the eccysis of clean-out system may significantly reduce; Thus, the content of composition (A) is preferably 10～35wt%.When the content of composition (D) is lower than 3wt%, may reduce significantly the clean ability of liquid crystal material; And when content surpassed 40wt%, the stability of liquid may reduce; Thus, the content of composition (D) is preferably 3～30wt%.When the content of composition (E) was not in aforementioned range, the stability of liquid may reduce; Thus, the content of composition (E) is preferably 6～10wt%.On the other hand, there is no particular restriction for the addition of water, but its content in constituent is preferable at least more than 10wt%, to reduce the combustibility of constituent.
Compound shown in the above-mentioned general formula as composition (A) (1) and as the example of the hydrocarbon polymer of the carbon number 8～20 of composition (D) is identical with cited person in the declaratives of first kind of aqueous liquid cleaner compositions for LCD panels before.In addition, the example of above-mentioned teepol as composition (E) comprises: the sulfonated of average carbon number 10～20, sulphur succsinic acid (sulfosuccinate) teepol, the alkyl-sulphate of average carbon number 10～20, the straight chain with average carbon number 10～20 or branch's alkyl or alkenyl, and through alkyl (or thiazolinyl) ether sulfate of 0.5～8 mole ethylene oxide base addition, and the saturated or unsaturated fatty acid salt of average carbon number 5～22 etc.
For improving the ability of soaking into and the cloud point of cleaner compositions, be good with sulphur amber acid type teepol especially in the above-mentioned teepol.There is no particular restriction for available sulphur amber acid type teepol kind, be preferably by selecting more than one in following three kinds of interfacial agents and use: the sulphur succinamide/ester mixed type teepol shown in sulphur succsinic acid dioxane (alkene) the ester type teepol shown in the general formula (5), the general formula (6), and the sulphur mono succinate acid amide type teepol shown in the general formula (7).
Wherein, R
6～R
10Be the alkyl or alkenyl of identical or different carbon number 3～22, M is alkali metal group metal ion, alkaline earth metal ion or ammonium ion.
In the compound of above-mentioned general formula (5)～(7), there is no particular restriction for the alkyl or alkenyl of carbon number 3～22, the example is: isobutyl-, amyl group, hexyl, octyl group, 2-ethylhexyl, dodecyl and hexadecyl or the like, be good with octyl group and 2-ethylhexyl especially wherein, have good liquid stability because of it can make constituent.Particularly improving under the considering of power of impregnation the R in the sulphur succsinic acid dialkyl salt compounds shown in the general formula (5)
6And R
7Be preferably isobutyl-, amyl group, hexyl, octyl group or 2-ethylhexyl.In addition, alkali metal group metal ion and alkaline earth metal ionic kind also do not have special restriction, and ammonium ion can be the level Four ammonium ion of various amines.
As described above, the third aqueous liquid cleaner compositions for LCD panels of the present invention comprises: the composition (G) (being DMSO) of the composition (E) of the composition of 5～50wt% (D), 1～20wt%, the composition (F) of 1～40wt%, 1～20wt%, and the water of specified quantitative.
In above-mentioned composition, when the content of composition (D) is lower than 5wt%, may reduce the clearing power of the higher liquid crystal material of relative polarities such as stn liquid crystal material; And when content surpassed 50wt%, clean-out system may reduce the clearing power of the lower liquid crystal material of relative polarities such as TFT liquid crystal material, and the eccysis of clean-out system also may significantly reduce; Thus, the content of composition (D) is preferably 10～40wt%.When the content of composition (E) was lower than 1wt%, the eccysis of clean-out system may reduce; And when content surpassed 20wt%, the liquid stability of clean-out system may reduce; Thus, the content of composition (E) is preferably 5～20wt%.When the content of composition (F) was lower than 1wt%, the liquid stability of clean-out system and eccysis may reduce; And when content surpassed 40wt%, the cloud point of liquid may reduce; Thus, the content of composition (F) is preferably 10～35wt%.When the content of composition (G) is lower than 1wt%, may reduce the clearing power of the lower liquid crystal material of relative polarities such as TFT liquid crystal material; And when content surpassed 20wt%, the liquid stability of clean-out system may descend.On the other hand, there is no particular restriction for the addition of water, but its content in constituent is preferable at least more than 10wt%, to reduce the combustibility of constituent.In addition, because this cleaner compositions still exceeds one section to the clearing power of the higher liquid crystal material of relative polarities such as stn liquid crystal material, so the composition (D) and (G) the preferable person as previously discussed of content of (DMSO).
In this 3rd aqueous liquid cleaner compositions for LCD panels, as the hydrocarbon polymer of the carbon number 8～20 of composition (D) and as the teepol of composition (E), cited person is identical in the declaratives of the example and first and second aqueous liquid cleaner compositions for LCD panels before.In addition, mentioned component (F) is the oxyalkylene group affixture of short-chain alkyl (thiazolinyl) or middle chain alkyl (thiazolinyl) monohydroxy-alcohol, the oxyalkylene group affixture of phenol, or the oxyalkylene group affixture of phenylcarbinol, shown in general formula (4):
R
4O(BO)
oR
5(4)
R wherein
4Be alkyl or alkenyl, the phenyl of carbon number 4～11, or phenmethyl, R
5Be the alkyl of hydrogen atom or carbon number 1～4, BO is the oxyalkylene group of carbon number 2～3, and o is 1～6.
In the compound of general formula (4), the example of the alkyl of carbon number 4～11 comprises: normal-butyl, isobutyl-, three grades of butyl, amyl group, hexyl, octyl group, nonyl, decyl, undecyl, and 2-methyl decyl or the like, be good with carbon number 4～8 especially wherein; The example of the thiazolinyl of carbon number 4～11 comprises: butenyl, hexenyl, octenyl, decene base or the like are good with carbon number 4～8 especially wherein.In addition, the example of the alkyl of carbon number 1～4 comprises methyl, ethyl, propyl group, normal-butyl, isobutyl-, and three grades of butyl or the like.
In addition, above-mentioned BO is the oxyalkylene group of carbon number 2～3, and it can be pure is oxyethylene group or oxypropylene group, or uses this two with, but preferable pure for oxyethylene group or use oxyethylene group with and oxypropylene group.The additional mole number o of oxyalkylene group is 1～6 herein, and is preferably 1～4.If the o value is less than 1, the liquid stability of clean-out system may reduce; Otherwise greater than 6, then clearing power may reduce as the o value.
In sum, the example of the composition (F) that is suitable for comprising: Diethylene Glycol single-butyl ether, Diethylene Glycol dibutyl ether, Diethylene Glycol list hexyl ether, Diethylene Glycol list (2-ethylhexyl) ether, TEG list (2-ethylhexyl) ether, phenoxyethyl alcohol, and Diethylene Glycol list phenmethyl ether or the like.
There is no particular restriction for the manufacture method of above-described various aqueous liquid cleaner compositions for LCD panels of the present invention, and can comply with general method mixing preparation.Though the interpolation of each composition order can change arbitrarily, but preferable mode is earlier with each the composition thorough mixing beyond the water, again in wherein adding a spot of water, to mix uniform liquid constituent.In addition, when using aqueous liquid cleaner compositions for LCD panels of the present invention, can directly use, also can re-use behind the thin up.But, for giving full play to its clean ability, be good in the mode of direct use.Moreover, when using aqueous liquid cleaner compositions for LCD panels scavenging solution crystal panel of the present invention, after liquid crystal panel filling liquid crystal, be placed in the cleaner compositions of the present invention, and cleaned with infusion method or ultrasound etc.
In addition, various aqueous liquid cleaner compositions for LCD panels of the present invention is except that containing above-mentioned each neccessary composition, other composition that still can optionally add 1～30wt%, as the both sexes interfacial agent, clean promotor (cleaning builder) and the solvent of surging (hydrotrope) etc., to improve cloud point and to improve the clearing power and the liquid stability of clean-out system; The rust-preventive agent that more can add 0.1～5wt% is as benzotriazole and three grades of butyl benzoates etc.Moreover, be to improve the liquid stability or the clearing power of clean-out system, also can be under the prerequisite of the regulation of not violating chemical substance management promotion law (PRTR method), and with the oxyalkylene group affixture of carbon number 11 or following straight chain alcohols.
As mentioned above, because first and second aqueous liquid cleaner compositions for LCD panels of the present invention is made up of composition (A)～(D) and composition (A), (D), (E) respectively, so surface attachments such as the liquid crystal material of the gap of invading liquid crystal panel and glass powder are all had good clean effect, and its combustibility is low, and long-time stability of preserving is also fine.
In addition, because being reached by composition (D), (E), (F), the 3rd aqueous liquid cleaner compositions for LCD panels of the present invention (G) forms, so the different plurality of liquid crystals materials of rerum natura such as stn liquid crystal material and TFT liquid crystal material are all had good clean ability, and its combustibility is low, and long-time stability of preserving is also fine.Moreover, because the present invention does not use the ethylene oxide adduct of the alcohols of carbon number 12～15,, also needn't put on record according to the regulation that chemical substance is managed promotion law (PRTR method) so the burden that environment is caused is little in advance.
The example explanation:
Below will describe the practice of the present invention and advantage in detail, but it is not in order to limit scope of the present invention with several examples and comparative example.
Example 1～9
The aqueous liquid cleaner compositions for LCD panels of example 1～9 is allocated and is got according to composition shown in the table 1 and ratio respectively, and it adds less water again to form uniform liquid constituent behind each the composition thorough mixing beyond the water.
Table 1
Comparative example 1～4
The aqueous liquid cleaner compositions for LCD panels of comparative example 1～4 is allocated and is got according to composition shown in the table 2 and ratio respectively, and it adds less water again to form uniform liquid constituent behind each the composition thorough mixing beyond the water.
Table 2
Then, the aqueous liquid cleaner compositions for LCD panels of use case 1～9 and comparative example 1～4 cleans the liquid crystal panel of test usefulness respectively, and with its clearing power eccysis of the amount of commenting and liquid stability or the like, its result is as shown in table 3.In addition, projects comment metering method as described below:
[1] the clearing power amount of commenting
Preparation cuts into the liquid crystal panel of the gap length 5 μ m of suitable size, and in its gap coating of liquid crystalline material, 80 ℃ of following stabilizations are 8 hours again, promptly gets and waits to clean sample.In addition, be attached with 100～300 above glass powders of 5 μ m that are slightly larger than spacer (spacer) on the surface electrode terminal of test with liquid crystal panel.Then, each liquid crystal panel is soaked in the stoste of detergent composition for liquid of example 1～9 and comparative example 1～4, (50kHz 200W), cleans 3 minutes with ultrasound under 50 ℃ to re-use the SC-20 type ultrasound scrubber that Sun Electronics Industry Company produces.
Then, the panel of cleaning is taken out, the ultrasound of the same terms cleaned 1 minute when cleaning in 50 ℃ ion exchanged water, in 105 ℃ thermostatic drier dry 60 minutes then.Then, the polarizing microscope BX-60 that makes with Olympus industrial inspects the gap, and with liquid crystal material residual benchmark as the amount of commenting whether; Calculate the number of the glass powder of electrode terminal remained on surface simultaneously, and calculate its clearance with following method.
1. the detergency amount of commenting 1 (the residual degree of liquid crystal material)
◎: clean fully
Zero: most of cleaning
△: small part is cleaned
*: do not clean fully
2. the detergency amount of commenting 2 (clearance of glass powder)
Glass powder number * 100 of the clearance of glass powder (%)=(the glass powder number before cleaning-after cleaning glass powder number)/before cleaning
[2] the eccysis amount of commenting
Identical liquid crystal panel is placed ethanol, thoroughly to clean its gap.Then, each liquid crystal panel is soaked in the stoste of detergent composition for liquid of example 1～9 and comparative example 1～4, and with the ultrasound irradiation, so that cleaner compositions is full of the gap.Then, be that liquid crystal panel that cleaner compositions was full of is immersed in 50 ℃ the ion exchanged water and reaches 3 minutes with the gap, gently mention again, then in 105 ℃ dry 60 minutes down.After drying finished, the polarizing microscope BX-60 that makes with Olympus industrial inspected the gap, and with the residual of following each cleaner compositions of the benchmark amount of commenting.
◎: eccysis fully, no clean-out system is residual
Zero: most of eccysis, it is residual almost not have clean-out system
△: part is by eccysis, and the part clean-out system is residual
*: not eccysis fully, the volume clean-out system is residual
[3] liquid stability
Generally speaking, for improving the efficient of cleaning, above-mentioned cleaner compositions regular meeting is in use heated; But because it at high temperature has inhomogeneity problem, so it is at the cloud point of the high-temperature zone pointer as its liquid stability.Be the cloud point of measuring the detergent composition for liquid stoste of example 1～9 and comparative example 1～4 herein, again with the following benchmark amount of commenting:
◎: more than 50 ℃
Between zero: 40 ℃ to 50 ℃
△: between 30 ℃ to 40 ℃
*: be lower than 30 ℃ or gonorrhoea/separation
Table 3
| (is liquid crystal material residual for clearing power 1?) | Clearing power 2 (glass powder clearance (%)) | Eccysis | Liquid stability | |
| Example 1 | ○ | 90 | ◎ | ◎ |
| Example 2 | ○ | 98 | ◎ | ○ |
| Example 3 | ◎ | 82 | ○ | ◎ |
| Example 4 | ○ | 90 | ◎ | ○ |
| Example 5 | ○ | 85 | ◎ | ◎ |
| Example 6 | ◎ | 82 | ◎ | ◎ |
| Example 7 | ◎ | 80 | ◎ | ◎ |
| Example 8 | ○ | 88 | ◎ | ◎ |
| Example 9 | ◎ | 80 | ◎ | ◎ |
| Comparative example 1 | ○ | 55 | ○ | ○ |
| Comparative example 2 | △ | 72 | ○ | ○ |
| Comparative example 3 | × | 75 | ○ | ○ |
| Comparative example 4 | △ | 78 | ◎ | ○ |
As shown in table 3, compare down with comparative example 1～4, the various aqueous liquid cleaner compositions for LCD panels of example 1～9 gained are no matter it is aspect the two clearing power of liquid crystal material and glass powder, still aspect eccysis and liquid stability, all be better than the former.
Example 10～15
The aqueous liquid cleaner compositions for LCD panels system of example 10～15 allocates and gets according to composition shown in the table 4 and ratio respectively, and it all behind each the composition thorough mixing beyond the water, adds a spot of water to form uniform liquid constituent again.
Table 4
Comparative example 5～7
The aqueous liquid cleaner compositions for LCD panels of comparative example 5～7 is allocated and is got according to composition shown in the table 5 and ratio respectively, and it all behind each the composition thorough mixing beyond the water, adds a spot of water to form uniform liquid constituent again.
Table 5
Then, the aqueous liquid cleaner compositions for LCD panels of use case 10～15 and comparative example 5～7 cleans the STN type and the TFT type liquid crystal panel of test usefulness respectively, and with its clearing power eccysis of the amount of commenting and liquid stability or the like, its result is as shown in table 6.In addition, projects comment metering method as described below:
[1] the clearing power amount of commenting
Preparation cuts into the liquid crystal panel of the gap length 5 μ m of suitable size, in the liquid crystal material of its gap coating STN type or TFT type, in 80 ℃ of following stabilizations 8 hours, promptly gets and waits to clean sample again.Then, each liquid crystal panel is placed the stoste of the detergent composition for liquid of example 10～15 and comparative example 5～6, use the SC-20 type ultrasound scrubber that Sun electronic industry worker department produces (50kHz, 200W), under 50 ℃ with clean 3 minutes of ultrasound.Then, the panel of cleaning is taken out, the ultrasound of the same terms cleaned 1 minute when cleaning in 50 ℃ ion exchanged water, in 105 ℃ thermostatic drier dry 60 minutes then.Then, the polarizing microscope BX-60 that produces with Olympus industrial inspects the gap, and with liquid crystal material residual benchmark as the amount of commenting whether.
The clearing power amount of commenting (the residual degree of liquid crystal material)
◎: clean fully
Zero: most of cleaning
△: small part is cleaned
*: do not clean fully
[2] the eccysis amount of commenting
Identical liquid crystal panel is placed ethanol, thoroughly to clean the gap.Then, each liquid crystal panel is soaked in the stoste of detergent composition for liquid of example 10～15 and comparative example 5～7, and with the ultrasound irradiation, so that cleaner compositions is full of the gap.Then, be that liquid crystal panel that cleaner compositions was full of is immersed in 50 ℃ the ion exchanged water and reaches 3 minutes with the gap, gently mention again, then in 105 ℃ dry 60 minutes down.After drying finishes, inspect the gap with the polarizing microscope BX-60 that produces with Olympus industrial, and with the residual of following each cleaner compositions of the benchmark amount of commenting.
◎: eccysis fully, no clean-out system is residual
Zero: most of eccysis, it is residual almost not have clean-out system
△: part is by eccysis, and the part clean-out system is residual
*: not eccysis fully, the volume clean-out system is residual
[3] liquid stability
Measure the cloud point of the detergent composition for liquid stoste of example 10～15 and comparative example 5～7, the more liquid homogeneity hold facility under its high temperature of the amount of commenting in the following manner:
◎: more than 50 ℃
Between zero: 40 ℃ to 50 ℃
△: between 30 ℃ to 40 ℃
*: be lower than 30 ℃ or gonorrhoea/separation
Table 6
As shown in table 6, compare down with comparative example 5～7, the various aqueous liquid cleaner compositions for LCD panels of example 10～15 gained are no matter it is aspect the two clearing power of STN type and TFT type liquid crystal material, still aspect eccysis and liquid stability, all be better than the former.
The invention effect
As mentioned above, the present invention can provide a kind of aqueous liquid cleaner compositions for LCD panels, and it is to the liquid crystal material of the gap of invading liquid crystal panel, and the surface attachments such as glass dust all has good clean effect; And another kind of aqueous liquid cleaner compositions for LCD panels can be provided, and it all has good clean ability to STN type liquid crystal material and TFT with the different plurality of liquid crystals material of the physical property such as liquid crystal material. Simultaneously, burden and the toxicity that environment is caused of these aqueous liquid cleaner compositions for LCD panels are little, and flammable low, add the oxidation of alcohols Addition on ethylene thing that it does not use carbon number 12～15, so also needn't put on record according to the regulation that chemical substance is managed promotion law (PRTR method) in advance.
Claims (1)
1. an aqueous liquid cleaner compositions for LCD panels is characterized in that, comprises that composition (A), (D) reach (E), and water, wherein
Composition (A) is the compound shown in the general formula (1), and content is 5～60wt%:
RR
1CH(CH
2)
nO(AO)
mH (1)
Wherein, R and R
1Be the alkyl of carbon number 1～8, and when n=1, R and R
1The carbon number summation more than or equal to 4 and smaller or equal to 9; When n=2, R and R
1The carbon number summation more than or equal to 3 and smaller or equal to 8; N is 1 or 2, and AO is an oxyethylene group, or uses oxyethylene group and oxypropylene group with, and m is 2～10;
Composition (D) is the hydrocarbon polymer of carbon number 10～14, content 3～40wt%; And
Composition (E) is following general formula (5) or (6) represented teepol, or the alkyl-sulphate of average carbon number 10～20, and content is 3～20wt%
R wherein
6～R
9Alkyl or alkenyl for identical or different carbon number 3～22.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002116200 | 2002-04-18 | ||
| JP2002116200 | 2002-04-18 | ||
| JP2003041390 | 2003-02-19 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03122204 Division CN1253545C (en) | 2002-04-18 | 2003-04-16 | Water liquid detergent composition for liquid crystal panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1900247A CN1900247A (en) | 2007-01-24 |
| CN100393862C true CN100393862C (en) | 2008-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005101259283A Expired - Fee Related CN100543122C (en) | 2002-04-18 | 2003-04-16 | Aqueous liquid cleaner compositions for LCD panels |
| CNB2005101259279A Expired - Fee Related CN100393862C (en) | 2002-04-18 | 2003-04-16 | Aqueous liquid cleaner compositions for LCD panels |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005101259283A Expired - Fee Related CN100543122C (en) | 2002-04-18 | 2003-04-16 | Aqueous liquid cleaner compositions for LCD panels |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0153857B2 (en) * | 1984-02-29 | 1996-05-08 | Unilever N.V. | Detergent compositions |
| CN1188795A (en) * | 1998-01-20 | 1998-07-29 | 山东大学 | Aqueous cleaning agent composite |
| JPH10338897A (en) * | 1997-06-10 | 1998-12-22 | Sanyo Chem Ind Ltd | Detergent composition for liquid crystal cell |
| CN1316496A (en) * | 2001-04-30 | 2001-10-10 | 山东大学 | Water-base composite detergent for liquid crystal |
-
2003
- 2003-04-16 CN CNB2005101259283A patent/CN100543122C/en not_active Expired - Fee Related
- 2003-04-16 CN CNB2005101259279A patent/CN100393862C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0153857B2 (en) * | 1984-02-29 | 1996-05-08 | Unilever N.V. | Detergent compositions |
| JPH10338897A (en) * | 1997-06-10 | 1998-12-22 | Sanyo Chem Ind Ltd | Detergent composition for liquid crystal cell |
| CN1188795A (en) * | 1998-01-20 | 1998-07-29 | 山东大学 | Aqueous cleaning agent composite |
| CN1316496A (en) * | 2001-04-30 | 2001-10-10 | 山东大学 | Water-base composite detergent for liquid crystal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1818049A (en) | 2006-08-16 |
| CN100543122C (en) | 2009-09-23 |
| CN1900247A (en) | 2007-01-24 |
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