TW201016840A - Detergent compositions for cleaning liquid crystal material and method of cleaning liquid crystal panel - Google Patents

Abstract

This invention relates to providing detergent compositions which have high detergency for liquid crystal smears and enables reduction of effluent load on the environment and a method of cleaning a liquid crystal panel using the detergent compositions. The detergent compositions for cleaning liquid crystal is characterized by containing an aromatic compound represented by the following Formula (1) [In Formula, R1 indicates OCH3 or CH2OH3, and R2 indicates CH3, OCH3 or CH2OCH3]; a method of cleaning the liquid crystal panel is characterized by using the detergent composition for cleaning liquid crystal. The detergent composition for cleaning liquid crystal is preferably made of a mixture of the aromatic compound represented by the formula (1) and water. [Formula 1]

Description

201016840 VI. Description of the Invention: [Minghu Jinxuan Xuan cold page] TECHNICAL FIELD The present invention relates to a detergent composition for removing liquid crystals and a cleaning method for a liquid crystal panel. The present invention claims priority based on the application of the Japanese Patent Application No. 2008-125785, filed on Sep. .液晶 BACKGROUND OF THE INVENTION A liquid crystal panel is generally manufactured in such a manner that a pair of glass substrates on which an electrode and an alignment film are formed are left with a part of an opening and bonded into a liquid crystal chamber by an adhesive, a liquid crystal is injected into the liquid crystal chamber, and the opening is sealed. After the mixture is sealed, the cleaning is performed, and the deflecting plates are respectively attached to the surface 0 of the pair of glass substrates. In the manufacturing method, the outer side of the bonding portion between the pair of glass substrates (the opposite side to the liquid crystal) is opposed to the glass substrate. In a narrow space, a void portion (narrow portion) is inevitably generated. Therefore, when liquid crystal is injected into the liquid crystal cell, the liquid crystal enters the narrow portion due to capillary action and has an undesired effect. When the liquid crystal in the narrow portion (hereinafter referred to as "liquid crystal dirt") is left as it is, the liquid crystal dirt residue can function as a release agent. In the subsequent manufacturing steps, there is a fear that the deflecting plate may be peeled off. Problems such as incomplete connection of the driver terminals, defects in the underfill interface of the driver, peeling of the peelable coating film for the thinning technique of the substrate, etc., 201016840. For this reason, it is necessary to wash and remove the liquid crystal dirt with high cleanliness for the cleaning of the liquid crystal panel. The above liquid crystal soil is generally known as a polar compound, and has high dispersibility or solubility to an aqueous solvent due to strong intermolecular interaction and high hydrophobicity. In order to wash and remove the liquid crystal fouling, a detergent composition has been proposed in the past. The detergent composition contains a hydrocarbon solvent, a specific polyoxyalkylene dialkyl ether compound, and an aromatic compound represented by the following formula. Monocyclic compound Rn-C6H4-CpH2p-0-(CqH2qO)rH [wherein R11 represents a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or an alkenyl group having 1 or 2 carbon atoms, and p is a hydrazine or 1~ An integer of 2, an integer of 2 to 4, an integer of 0 or 1 to 4, and a CqH2qO of r may be the same or different. (Reference Patent Document 1) Further, a liquid crystal panel aqueous liquid detergent composition is proposed. The composition contains a hydrocarbon having a carbon number of 8 to 20 and an epoxide of a specific medium chain branched monovalent alcohol. The product is represented by R120(A0)kR13 [wherein, R12 represents an alkyl group having a carbon number of 1 to 6, a phenyl group or a benzyl group, a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, and a k-system represented by The number of 1 to 5, the AO system represents an epoxide adduct represented by an alkylene group having 2 to 4 carbon atoms, and a quantitative amount of water. (Patent Document 2) Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. According to the invention, the detergent composition described in Patent Documents 1 and 2 is attached to liquid crystal soil of a narrow space (narrow portion) of 2 to 5 inches between the liquid crystal panel and the glass substrate. The detergency is not sufficient. Moreover, the invention described in Patent Document 1 discloses that the detergent composition containing the aliphatic hydrocarbon as a main component and the washed matter are directly washed in the wipe of the washed 'aircraft, and washed. Methods. However, the method of using the above-mentioned detergent composition uses a large amount of an organic solvent such as an aliphatic hydrocarbon, and has a problem of high drainage load to the environment. Further, in the detergent composition described in Patent Document 2, although the proportion of the water-free preparation is 77% by weight or less, it is still searching for a step other than water such as an organic solvent. The proportion of the ingredients is adjusted to suppress the drainage load on the environment, and at the same time, the cleaning power of the liquid crystal dirt can be further increased. In view of the foregoing, the present invention provides a cleaning agent for removing liquid crystals and a cleaning method for a liquid crystal panel, which are used for the cleaning of liquid crystal dirt by the detergent composition of the night crystal. High net power and reduced drainage load on the environment. Means for Solving the Problem The inventors of the present invention have focused on the results of the above-mentioned problems, and the following means are provided for 201016840. In other words, the detergent composition of the present invention which contains the following formula (1) = the liquid crystal-removing detergent composition is characterized by an aromatic compound.

[In the formula, R1 represents fine 3, and R2 represents CH3, OCH or CH2OCH3. In the present invention, it is preferred to remove the liquid crystal cleaning product and to mix the compound of the (4) group represented by the above formula (1) with water. Further, the present invention is characterized in that, in addition to the aromatic compound represented by the above formula (1) and water, it is further further mixed with at least one selected from the group consisting of the following groups. This group is composed of a compound of the following formula (2), a surfactant of HLB11 or more, and an aprotic polar organic solvent. [2] R3—〇~fCH2CH2〇)η η ··· (2) [wherein, R3 represents a sleek, stupid or stupid methyl group having a carbon number of i to 6, and a η system represents a number of 0 to 50. . Further, the cleaning method of the liquid crystal panel of the present invention is characterized by the above-described detergent composition for removing liquid crystal of the present invention. EFFECTS OF THE INVENTION 201016840 According to the present invention, the detergent composition for removing liquid crystals can improve the cleaning power against liquid helium and reduce the drainage load on the environment. Further, according to the liquid crystal panel cleaning method of the present invention, liquid crystal dirt adhering to the gap (narrow portion) of the liquid helium panel can be sufficiently removed, and the drainage load on the environment can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS [Fig. 1] Table 7K The space before injection of liquid crystal material used in the present embodiment Φ liquid positive panel' Fig. 1(a) is a schematic perspective view of a liquid crystal panel. Fig. 1(b) is a partial side view of the liquid crystal panel viewed from the side of the end portion 1bl of the glass substrate 1b in the 1st (4) circle. - [Fig. 2] A photograph showing the state of residual liquid crystal material in the void (narrow portion) in the liquid crystal panel designation region (X in Fig. 1) corresponding to the evaluation criteria of the present embodiment. The best form % of the invention is a detergent composition for removing liquid crystals. The detergent composition for removing liquid crystal of the present invention contains the aromatic compound represented by the above formula (1) (hereinafter referred to as "(Sal) component"). <(Sal) component > In the above formula (1), R1 represents OCH3 or CH2〇CH3. R2 represents ch3, 〇ch3 or CH2OCH3. The combination position of R2 is any position of the ortho, meta or para position of the benzene ring; and the cleaning power of the liquid crystal dirt and the possibility of being easily obtained industrially are better, and the alignment is preferred. . The components of 201016840 (Sal) are specifically exemplified by o-nonyloxymethyl, methoxytoluene, p-methoxytoluene, 1,2-dimethoxybenzene, 1, methoxy group. Benzene, 1,4-dimethoxybenzene, o-methoxy-α-methoxymethyl, o-methoxy-α-methoxyindole, p-methoxy-α-methoxy Alkyl, α-methoxy-o-xylene, α-methoxy-m-xylene, α-methoxy-p-xylene, o-benzenedimethanol dimethyl, m-benzene Methanol dimethyl ether, p-stupholyl dimethyl ether. The component (Sal) is preferably one having the above-mentioned R1 and the above-mentioned R2 substituents, and in particular, from the viewpoint of further improving the detergency against liquid crystal soil, the water solubility (25 ° C) lg / 100 g aqueous solution The following are preferred, preferably 5g/l〇〇g aqueous solution or less (Ug~〇.5g/1〇〇g aqueous solution is preferred. (Sal) may be used alone or in combination. The content ratio of the component (S a 1) in the detergent composition for removing liquid crystal of the present invention is 1% by mass or more, preferably 5% by mass or more. If the content of the wound is at the lower limit, the cleaning power of the liquid crystal dirt can be further improved. The upper limit of the content ratio of the (Sal) component can be 1% by mass, preferably 9 〇% or less. (4) The amount is less than or equal to, and the mass is equal to or less than %. (> The following is particularly preferable. The content of the (Sal) component is preferably 9% by mass, ητ, and '60% by mass or less. It is 5 〇 mass. / 〇 ^ ^ ^ ^ ^ ^ 更 更 更 更 更 更 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对 对7 Chengyang fouling can sufficiently obtain the detergency and can further reduce the water load to the environment. <Optional component> 201016840 The detergent composition for removing liquid crystal of the present invention may also contain the aforementioned (Sal) component. Other components other than the component (Sal) include water, a surfactant, and an organic solvent. In addition, the "surfactant" in the present invention means 253⁄4 when diluted with pure water to 1% by mass. The lower surface tension is a compound of 5 〇 mN/m or less. The surface tension is a value measured by using a surface tension meter and a platinum plate according to the Wimdmy method. The term "pure water" in the present invention means a physical method. Or chemically removing impurities from water. For pure water, for example, deionized water or distilled water, etc. (surfactant) For the surfactant, for example, a nonionic surfactant or an anion can be used. Surfactant, cationic surfactant, and amphoteric surfactant. In particular, the compatibility of (Sal) components with water is improved, and the (Sal) component is prevented from being mixed under conditions of high temperature preservation in summer. The effect of the white turbidity of the material is the secret _, from the electrode liquefaction caused by the electrification of the liquid crystal panel (four) material green ride, the _ sub-interface excretion is better. The viewpoint of the turbidity effect of the mixture of water and water is that the nonionic surfactant on HLBim is excellent, and the nonionic surfactant HLB14 2G on HLBmx is particularly good. Specifically, for example, polyoxyethylene ethyl sulphate on HLmm may be mentioned. 201016840 In addition, "HLB" in the present invention means the relative strength of hydrophilicity and lipophilicity of a surfactant molecule, and is hydrophilic. The balance of oleophilic oil is expressed in terms of quantity, and is based on the value obtained by the Griffin method (refer to Yoshida, Idena, Otsuka, Yamamoto, "New Edition of Surfactant Manual", Industrial Book Co., Ltd., 1991, Page 234). The cloud point of the substance in which the (Sal) component is mixed with water is preferably 3 〇 t or more, and more preferably 40 C or more. When the cloud point is at least the lower limit value, the detergent composition having a uniform and transparent appearance of E can be easily prepared. The "cloud point" in the present invention means the following temperature: 0 to 30. (: A predetermined amount of the washed and formed product is prepared in the range, and the solution is placed in a homogenous transparent solution, and the solution is placed in a mosquito dish, soaked in a water bath towel to raise the temperature of the water bath, and the temperature of the water bath when the solution starts to become (4). The water-off temperature can be measured by, for example, reading the standard temperature (IV). (Organic solvent) For the solvent of the machine, a polar organic solvent or a solution can be used, especially from the improvement of the (Sal) component and the water compatibility. Enhance _ point quality stability (uniformity 'transparency) to watch 'to make a secret organic solvent. Sex machine = agent can be a protic polar organic solvent, can also be a protic substance into the liquid especially It is particularly preferable to use an aprotic polar organic solvent from the viewpoint of further increasing the (Sal) component and mixing with water. *Hexuality (uniformity, permeability). H is a non-protic non-protic polar organic飒 飒 80 80 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒 飒Guess, etc. In particular, in the case of aprotic polar organic solvents, From the point of view of the detergency, it is preferable that the liquid crystal contains oxygen atoms, and the DMSO, DMF, and C are excellent, and the job is the best. (, 〇) is for the protic polar organic solution. For example, a carbon number such as methanol butanol or a third butanol, a valence =, a single bond of a carbon number such as acetic acid, formic acid or T acid;

In the case of the glycol ether, there may be mentioned, for example, an ethylene group which is an aliphatic nicotine group or an aromatic nicotyl group at the end and a hydrogen atom at the other end; a terminal aliphatic hydrocarbon group or an aromatic hydrocarbon group, and Further, the terminal hydrogen atom of the propylene oxide; the two ends are alkyl bisalkyl glycol ethers. In the above-mentioned "protonic polar organic solvent", the compound represented by the following general formula (2) is particularly preferable from the viewpoints of the two cleaning power for liquid crystal dirt and the low drainage to the environment (4). [化3]

R3—〇~fCH2CH20^-H (2) [In the formula, R3 represents a number of yards, stupid or benzoquinone η having a carbon number of 1 to 6, and represents a number from 0 to 50. In the formula (2), R3 represents an alkyl group having a carbon number of 丨6 or a phenyl group or a phenyl group. In the case of n~〇, the compound represented by the formula (2) is a monovalent alcohol. In this case, R3 is preferably an alkyl group having 1 to 6 carbon atoms, preferably methanol, ethanol, hydrazine-propanol, 2-propanol, 1-butanol or tert-butanol, and ethanol is more preferred. . In the case of 201016840, the compound represented by the formula (2) is an ethyl ethane glycol oxime. In this case, it is preferable that the base of the ruler is preferably a carbon number of 4 to 6. In the above formula (7), from the viewpoint of further improving the liquid stability (homogeneity, properties) of the substance in which the component (4) is mixed with water, 11 is preferably a number of 1 to 3 inches, and a number of 1 to 0 is Better. Further, the compound represented by the general formula (2) is not included in the surfactant defined above. f. For the non-polar organic solvent, for example, a stony hydrocarbon such as a dodecene or a tetradecene, or an aliphatic cyclic compound such as a decane or a cyclopentane may be used. The detergent composition for removing liquid crystal of the present invention has a reason that the drainage load on the ring is lowered, and it may be easily made non-hazardous, etc., and the (Sal) component is mixed with water. In this case, the content of water in the above-mentioned (4) in addition to the crystallization of the nucleus is preferably 10 to 95% by mass, preferably 5 to 95 ft%, and the mass is 8 〇 95. % is more preferable. If the water content is more than 1% by mass, the drainage load on the environment can be further reduced, and the detergent composition for removing the liquid crystal can be made non-hazardous. Further, if the water is in the % mass % The balance of the ingredients is adjusted. There is no particular limitation on the liquid crystal dirt water. For example, steaming, ion-exchanged water, and clean water can be used. Inventing the substance of H (Sal) and water, especially as a substance. To remove the liquid crystal detergent composition 'In view of the ability to prepare a solution that exhibits a uniform and transparent appearance, liquid stability (uniformity, transparency) of 12 201016840, in addition to the aforementioned (Sal) component and water, it is preferable to further mix the following groups. Select at least one substance (hereinafter referred to as "S2 component"); the group is composed of the above-mentioned formula (a compound represented by the magic, a nonionic surfactant of HLB11 or more, and an amorphous polar organic solvent) The composition of the (Sal) component and the S2 component which are used to remove the liquid crystal is hereinafter referred to as "Sal" water transparent solution.

The content ratio of the (Sal) component of "(Sal)-water transparent solution" is 5 to 70 mass. /. It is better, and 2% to 7% by mass is preferred. When the content ratio of the (Sal) component is at least the lower limit value, < further improves the cleaning power against liquid crystal dirt. If it is below the upper limit, < further reduce the drainage load on the environment. Further, the liquid stability (uniformity, transparency) of the transparent solution can be further improved. The (Sal) component may be used alone or in combination of two or more. The content ratio of the water of "(Sal)-water transparent solution" is preferably 1 〇 or more, and H) 〜% by weight. If the content of water is at least the lower limit, the solution can be made non-hazardous. The ratio of the component (4) of the "transparent solution of water" is preferably 10 to 70% by mass, and 30.^L 〇 ® 〆 〆 〆 〆 〆 〆 〆 〆 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 When the liquid crystal enthalpy (uniformity and transparency) of the transparent solution is less than or equal to the upper limit, the liquid crystal soil can be further cleaned. (S2) can be used alone. In one type, it may be used in combination of two or more. 13 201016840 By using the (S2) component, the compatibility of the (Sal) component with water can be improved. In addition, if a nonionic surfactant of HLB11 or higher is used, In the component S2), the cloud point of the transparent solution can be increased, and the effect of preventing white turbidity under the conditions of storage under temperature can be further obtained. Further, if an aprotic polar organic solvent is used as the component (S2), the pair can be further improved. The cleaning power of liquid crystal dirt. The mixing ratio of (Sal) component to (S2) component [(Sal)/(S2)]

When an aprotic polar organic solvent is used as the (S2) component, a mass ratio (Sal) / (non-ionic surfactant of HLB1 i or more) = 〇" to ι〇, and 0.1 to 6 is preferable. . When an aprotic polar organic solvent is used as the (S2) component, it is preferred that the mass ratio (Sal) / (aprotic polar organic solvent) = 〇 〇 1 is preferred. When the compound represented by the above formula (2) is used as the component (S2), the mass ratio (sal) / (the compound represented by the formula (7)) = G5 to 1Q is preferred, and the b 6 is preferred.

In any case, when (Sal)/(S2) is at least the lower limit value, the detergency can be improved. (Sal)/(S2) In the upper limit of the town, the liquid stability (uniformity and transparency) of the washed product can be improved. The positive value of "the transparent solution called water" is not particularly limited, and is preferably in the range of pH 2 to 10 at the time of pit. If the transparent solution is in the range of (4), the corrosion of the liquid crystal panel is less likely to occur. In the present invention, the pH of the detergent composition for removing liquid crystal means the following pH value: the temperature of the washed product is adjusted to be the same, and the glass electrode type 14 201016840 pH meter (product name: HM-30G, East Asia DKK (stock) system, the glass electrode is directly immersed in the detergent composition, and the pH value is displayed after 1 minute. The viscosity of "(Sal)-water transparent solution" is not particularly limited, 25 When the viscosity of the transparent solution is less than or equal to the upper limit value at ° C, the cleaning power against liquid crystal dirt can be further improved. Further, the drainage load on the environment can be further reduced. The viscosity of the detergent composition for removing the liquid crystal means that the temperature is adjusted to 25. (: The detergent composition is DV-I+ viscometer (product name: BROOKFIELD)) and the rotor No. 2 is at 60 rpm. Measurement value of measurement conditions after 60 seconds (pa · s Further, the detergent composition for removing liquid crystal of the present invention is preferably formed of an organic solvent component containing a (Sal) component. In this case, the content of the (Sal) component in the organic solution component is contained. The ratio is preferably 2% by mass, more preferably 5% by mass or more, and even more preferably 1% by mass. If the content ratio of the aromatic compound is above the lower limit, Further, the cleaning power of the liquid crystal dirt can be further improved. Other components other than the (sai) component of the organic solvent component of the ginseng may be, for example, sarcophagus (twelfth, fourteen, etc.), and women's hydrocarbons (ten a divalent hydrocarbon such as a dilute or a tetradecene, or an aliphatic hydrocarbon such as a ring-burning compound; or a protic polar organic solvent such as a monovalent alcohol, a mono-fusic acid or a ethane An aprotic polar organic solvent; an aromatic compound other than the component, etc. For example, the composition of the detergent for removing liquid crystal of the present invention can be placed in the same capacity as any component such as water. Give-fixed 15 201016840 like, and modulate (Sal) is a dispersion or emulsion which is dispersed in an optional component, or a solution of a (Sal) component and an optional component (for example, a transparent solution of the above r (§ai)_water), etc. The organic solvent component containing the (Sal) component may be mixed with an optional component such as water. Further, when the detergent composition for liquid crystal removal of the present invention is used for removing liquid crystal dirt, the liquid crystal may be removed. The stock solution of the composition of the agent may be used as it is, or may be used in combination with other components. According to the composition of the detergent for removing liquid crystal of the present invention described above, the effect of high cleaning power on liquid crystal dirt can be obtained. The reason for obtaining this effect is not clear, but it is estimated that the aromatic compound ((Sal) component) represented by the above formula (1) used in the detergent composition for liquid crystal removal of the present invention is The compatibility of liquid crystal dirt is high. According to the study by the inventors of the present invention, for example, liquid crystal dirt adhering to the void (narrow portion) of the liquid crystal panel can be confirmed, and the (Sai) component is instantaneously dissolved, and the chain hydrocarbon (aliphatic hydrocarbon) used in the prior art or The compatibility with the (Sal) component is superior to that of the aliphatic cyclic compound. It is considered to be caused by an increase in the affinity of the (Sal) component and the liquid crystal soil due to the effect of the interaction between the (sai) component and the aromatic compound containing φ liquid crystal soil. In addition, when an aromatic compound other than the (Sal) component is used, when the (Sal) component is used, it is confirmed that it can further improve the cleaning power against liquid crystal dirt when it is mixed with water. It is believed to be caused by the fact that the component has two specific substituents (Rl, R2) and exhibits some solubility to water. 16 201016840 Table 1 shows the solubility (25 ° C) of the aromatic compound (organic solvent) used in the examples described below. In addition, in Table 1, each is based on ※I: manufacturer]^〇8, lacquer 2:8TM REGIS TRY FILE (the theoretical physics data (calculated value) obtained by using special software for numerical values), *3: independent administration The homepage of the legal person product evaluation (nite), ※4: Solvent Handbook (Kodansha), indicating the solubility in water. [Table 1] Atomic compound versus water solubility (25. 〇 (gHOOg aqueous solution, p-benzodimethanol didecyl ether 0.16 ^ 1 α-decyloxy-p-xylene 0.29 - ^ 1,2-dimethoxy Base stupid 0.32 — 1,4-dioxyloxy stupid 0.29 — p-bifluorene 0.02 ※3 toluene 0 05 -3⁄4 3 benzoquinone 0.19 ^ 3 stupid methanol 3.8 ※ 斗本乙二酵2.7 * 1 From Table 1 It can be seen that the aromatic compound of the present invention (p-benzoic acid dimercapto ether, α-methyl decyl _ p-xylene, b 2 dioxyl bromide, b 4 - dimethoxy benzene) It is an aqueous solution with a water solubility of 〇16~〇32g/i〇0g, which shows some solubility to water. Only for this 'p-quinone benzene, toluene shows little solubility to water; benzyl alcohol (included in the foregoing) In the case of the aromatic monoterpene compound described in the patent document 1, the aqueous solution having a water solubility of more than lg/l〇〇g is more soluble in water than the aromatic compound of the present invention. According to the present inventors, It has been confirmed that if the use of aromatization of water in excess of lg/100g of aqueous solution 17 201016840 mouth will be difficult to get improved liquid crystal dirt The effect of the net force is believed to be caused by the weakening of the adsorption of the aromatic compound on the liquid crystal dirt. The benzamidine, the solubility of the aromatic compound of the present invention to water is the same level, but the benzoic acid has a The substituent (-OCH3) is different from the aromatic compound related to the present invention. + According to the detergent composition for removing liquid crystal according to the present invention, the effect of reducing the environmental drainage load can be obtained. The reason for this effect is presumed to be as follows. In the detergent composition for removing liquid crystal of the present invention, since the (Sal) component has a high cleaning power against liquid crystal dirt, the concentration of the (Sal) component can be lowered. (Sal) ingredients can be mixed with water, more in line with the Pollutant Release and Transfer Declaration System (PRTR), the Labor Safety and Health Act (Lao'an Law), the Poisons and Hazardous Substances - Banning Act (Drug Method) Therefore, it can be inferred that the detergent composition for removing liquid crystal of the present invention has a very low drainage load on the environment. Further, neither diphenylbenzene nor toluene conforms to any of PRTR, Lao'an law and poisonous drama. Azithine does not match Benzyl alcohol and phenylethylene glycol (the aromatic compound of [Rn〇(A〇)kRl spoon) contained in the above-mentioned Patent Document 2 is in accordance with the provisions of the PRTR, the Law of Labor and the Law of Poison In addition, according to the detergent composition for removing liquid crystal according to the present invention, when it is washed, it can be used after being diluted with water, even if the (Sal) component in the stock solution of the detergent composition is high in concentration. Since the concentration of the component can be reduced by dilution during washing, the drainage load to the environment can be reduced. Further, the detergent solution which is diluted to a low concentration can be easily subjected to a water separation membrane even at room temperature. Treatment (example: EUTECTM FS, split-type 18 201016840 制 manufactured by Asahi Kasei Fiber Co., Ltd.), so that the drainage load on the environment can be further reduced. On the other hand, the stock solution of the detergent composition containing a high concentration (Sal) component can be reduced in size and the number of containers can be reduced at the time of shrinkage transportation. Therefore, it is economically advantageous to reduce the transportation cost and the like. In addition, in particular, a stock solution having a uniform transparent appearance and liquid stability (uniformity, transparency) can be prepared by a detergent composition obtained by mixing (Sal) components, water, and (S2) components. Further, as a stock solution, a detergent composition for removing a liquid crystal which can be a non-hazardous substance can be obtained. Again, with

The amount of the (Sal) component of the detergent composition itself can also be reduced, which can further reduce the drainage load on the environment, and at the same time, can obtain a good cleaning effect on the liquid crystal dirt. The detergent composition for removing liquid crystal of the present invention is a detergent composition suitable for the cleaning use of a liquid crystal panel. The aromatic compound represented by the above formula (1) used in the present invention is industrially easy to obtain. The main use of the aromatic compound is, for example, an organic synthetic raw material such as an intermediate product of a resin or an intermediate product of a pharmaceutical product, and these conventional uses are completely different from the use of the present invention for removing a liquid crystal. The use of a desalinated liquid detergent composition provides a novel use of the aforementioned aromatic compounds. <<Cleaning method of liquid crystal panel>> The method of cleaning the liquid crystal panel of the present invention is a method of removing the liquid crystal detergent according to the present invention described above. The method for cleaning the liquid crystal panel of the present invention can be carried out, for example, as follows. 201016840 That is, the liquid crystal panel is immersed for a certain period of time while stirring the detergent composition for liquid crystal removal of the present invention (washing step). For example, the detergent composition for removing liquid crystal may be prepared by preliminarily mixing (Sal) component with any component such as water. 'Al can also be used separately (Sal) component and optional component to be mixed during washing. . Further, an organic solvent component containing a (Sal) component may be used instead of the above (Sal) component. Among them, in particular, it is preferred that the detergent composition for removing the liquid crystal is diluted with water, and the user is more preferably diluted with water in an amount of from 2 to 20 times. In this case, it is preferable to use the above-mentioned "(Sal)-water transparent solution" for the detergent composition for removing liquid crystal. In the case of the dilution method, it is preferred to use 2 to 20 times the amount of water for removing the liquid crystal detergent composition, and it is more preferable to use 2 to 15 times the amount of water. Right, the above-mentioned detergent composition for removing liquid crystal is diluted with twice or more of water', in addition to liquid crystal dirt which can sufficiently remove IW from the void (narrow portion) of liquid crystal sulfur, the film can be further reduced. Drainage load on the environment. The detergent composition for removing the liquid crystals is diluted with water of 2 〇 or less by the amount of water. The liquid crystal soil can be sufficiently removed by the (Sal) component having a low concentration. Next, the liquid crystal panel was taken out from the above-mentioned detergent composition and dipped in water (rinsing step). Thereafter, the liquid crystal panel is taken out from the water and dried by a dryer or the like (drying step). In addition, in the washing step or the rinsing step, the ultrasonic treatment may be performed on the right side of the ultrasonic wave, and the liquid scale adhering to the gap (narrow portion) of the liquid crystal panel can be removed more cleanly in a short time. Recorded as ideal. In addition to the above-described washing method, for example, the detergent composition for removing liquid crystal of the present invention can be directly washed from the mouth or the like. The object (liquid crystal panel) is sprayed with a cloth and then wiped off. According to the method for cleaning a liquid crystal panel of the present invention described above, the liquid crystal dirt adhering to the gap (narrow portion) of the liquid crystal panel can be sufficiently removed, and the drainage load on the environment can be reduced. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited by the examples. The [source] of the organic solvent used in the present embodiment is as follows. - The following shows the structure of the items. Benzyl phthalate dimethyl ether [IHARANIKKEI Chemical Industry Co., Ltd.] methoxy-p-xylene [IHANANIKKEI Chemical Industry (manufactured by 1,2-dimethoxybenzene [Tokyo Chemical Industry Co., Ltd.] Q 1 '4-dimethoxybenzene [Tokyo Chemical Industry Co., Ltd.] f-xylene (pure chemical (manufacturing)] phthalic acid [Kanto Chemical (manufactured)] Stupid methyl ether [Kanto Chemical (manufactured)] Stupid methanol [Kanto Chemical Co., Ltd.] Stupid Ethylene Glycol [Japanese Emulsifier (Production)] Cyclohexane [Pure Chemistry (Manufacturing)] 1-Dodecene [Idemitsu Trading Co., Ltd.] 正十二烧 [Japan Energy ( System)] 21 201016840 [Chemical 4]

CH2OCH3 Finance... Stupid Methanol dimethyl fc|

--methyl-based-p-dimethyl stupid

Och3 I · one - two T gas base

[Chemical 5]

Stupid s* 〇—CH2CH2〇—Η

Stupid E2 if [Chem. 6] 22 201016840 Ο Cyclohexane 1-Twelve

<<Evaluation of liquid crystal soil cleaning example (1)>> The liquid crystal soil cleaning power was evaluated in the order shown below.

U produces a liquid crystal panel, and the liquid crystal material for the TFT liquid crystal panel is introduced into the gap (narrow portion) of the liquid crystal panel by a syringe. The empty liquid crystal panel before the liquid crystal material is used in the present embodiment is shown in Fig. 1. Figure Ua) shows a schematic perspective view of a liquid crystal panel,

Ha) A side view of a portion of the liquid crystal panel viewed from the side of the end of the glass-based felb.

In the liquid crystal panel of Fig. 1(a), the glass substrate is adhered to the opposite side (the glass substrate = ib leaves an opening (not shown) and the second portion is bonded to form a liquid crystal chamber surface). The agent is sealed and made. The liquid crystal panel 10 is formed with an electrode 6. The inner side of the liquid crystal panel 10 is 300 μm, and the liquid crystal panel 10 is made of glass substrate as shown in Fig. 1(b). The distance from the 卩1al to the rear portion 2 (the gap portion 4| the distance between the substrates 1a, 1b is 3 23 201016840) The outer side of the substrate 2, the outer side of the substrate 2, and the outer side of the substrate 2 (the opposite side of the cavity 3) The narrow slits (narrow portions) formed by la, lb and the succeeding portion 2. Further, the range enclosed by X in Fig. 1 indicates the area in which the residual state of the liquid crystal material has been evaluated in the operation of the following 6) city. 2) 2 g of each of the above various organic solvents and 18 g of ion-exchanged water were mixed into 20 g of the detergent composition of each example, placed in a beaker of 1 mL, and continuously stirred (600 rpm) with a 2 cm-long stirrer. The liquid crystal panel in which the liquid crystal material was filled in the void (narrow portion) was immersed in the stock solution of the detergent composition at 60 ° C for 5 minutes. ❹ 3) Take out the LCD panel and wash each side with ion-exchanged water for about 5 seconds. 4) 50 g of ion-exchanged water was placed in an i〇〇mL beaker, and the liquid crystal panel was immersed at 60 ° C for 10 minutes (rinsing step). - 5) Take out the LCD panel and dry it in the dryer of TC for 1 minute. 6) Visually observe the liquid crystal in the gap (narrow) in the specified area (X in Fig. 1) with a polarizing microscope. The material remaining state was evaluated for the cleaning power of the liquid crystal soil according to the following evaluation criteria (pass: 4 minutes or more), and the results are shown in Table 2. (Evaluation criteria) 5 points: The liquid crystal material was completely washed and removed. 4 points. The liquid crystal material rarely remains. 3 points: The liquid crystal material remains everywhere. 2 points. The liquid crystal material remains in a block shape. 1 point: More than half of the liquid crystal material remains. 24 201016840 The liquid crystal material remaining state in the void (narrow portion) in the liquid crystal panel designation region (X in the first drawing) corresponding to the evaluation criteria is shown in Fig. 2 . In Fig. 2, reference numeral 5 denotes a liquid crystal material, reference numerals la and lb denote glass substrates, and reference numeral 2 denotes a rear portion. [Table 2] Detergency of organic solvent to liquid crystal soil y Example 1 p-Benzadimethanol dimethyl ether 4.5 points Example 2 α-methoxy-p-dimethyl hydrazine 4 points f Example 3 1, 2-dimethyl hydrazino stupid 4 points! Example 4 1,4-dimethoxybenzene 5 points Comparative example 1 Pair - dioxin stupid 3 points Comparative example 2 A stupid 3 points Comparative example 3 Phenyl phthalate 3 points comparison Example 4 Awkward yeast 2 points Comparative Example 5 Benzene glycol 2 points Comparative Example 6 Cyclohexene 1 parting Example 7 1-Dodecene 1 point Comparative Example 8 Positive 12 疣 1 point As shown in Table 2 In comparison with Comparative Examples 1 to 8, the cleaning compositions of Examples 1 to 4 using the aromatic compound of the present invention have a high cleaning power against liquid crystal® contamination. Further, the concentration of the aromatic compound (organic solvent) of the detergent compositions of Examples 1 to 4 was as low as 10% by mass, and all of the aromatic compounds (organic solvents) were in accordance with the PRTR, the Law of Lauanne, and the poisonous drama. Anything; therefore, the detergent compositions of Examples 1 to 4 have a very low drainage load on the environment. <Preparation of detergent composition> (Examples 5 to 19, Comparative Example 9) According to the compositions shown in Tables 3 to 4, the components were mixed according to a usual method, and the composition of each of the detergents was prepared. Things. 25 201016840 The unit of the blending amount in the table is the mass % based on the total mass of the detergent composition, and indicates the amount of purity of each component. Hereinafter, the components shown in the table will be explained. [Explanation of the components shown in the table] • The aromatic compound (Sal) represented by the formula (1) PXDM: p-benzoate dimethyl ether [IHARANIKKEI Chemical Industry Co., Ltd.]. • The comparative component of the (Sal) component [hereinafter referred to as "(Sal') component]] 12-burning: Zheng 12-burn [Japan Energy (product)] Water: ion-exchanged water • selected from the general formula (2) The compound and the HLB are at least one selected from the group consisting of a nonionic surfactant of 11 or more and an aprotic polar organic solvent (S2). • (Compound represented by the formula (2)) C4E3: Triethylene glycol monobutyl ether in which R3 in the formula (2) is a butyl group and η is 3. Product name: Buchilulu 30, Concord Fermentation Chemical System. C6E8: octaethylene glycol monohexyl radical in which R3 in the formula (2) is a hexyl group and η is 8.

Ph-G Ε03 Moer: R3 in the formula (2) is a phenyl group and η is a triethylene glycol monophenyl ether of 3. Trade name: phenylethylene glycol-30 (PhG-30), prepared by emulsifier. Ethanol: A monovalent alcohol in which R3 in the formula (2) is an ethyl group and η is 0. Kanto chemical system; protic polar organic solvent. • «(non-ionic surfactant above HLB11) 201016840 C10E14(HLB=15.9) ··The number of carbon atoms in the alkyl group is 1〇 and the number of repeats of the oxy-ethyl group (the average addition of ethyl epoxide to the molar) The number is a polyoxyalkylene (branched mercapto) ether of 14. Trade name: Noy to XL_14〇, the first - industrial pharmaceutical. C8E20 (HLB=17.4): the carbon number of the alkyl group is 8 and the number of repeats of the oxy-ethyl group (the average addition mole number of the ethyl group oxide) is 2 Å polyoxyethylene ethyl condensate > (2 -ethylhexyl)ether. Product name: Newcomer 1〇2〇, made of Japanese emulsifier. C10E5 (HLB=11.6): polyoxyalkylene oxide (branched oxime) having an alkyl group having a carbon number of 1 Å and an oxy extension of the ethyl group (the average addition mole number of the ethyl group oxide) is 5 Base) ether. Product Name: Noy to XL_5〇, the first industrial pharmaceutical system. • (Aprotic polar organic solvent) DMSO · Dimethyl sulfoxide, manufactured by Toray Fine Chemicals Co., Ltd. DMF: Dimercaptocarbamide, manufactured by Kanto Chemical Co., Ltd. Acetone: Made in Kanto Chemical Industry. • Comparative component of (82) component [hereinafter referred to as "(82,) component"] C10E4 (HLB = 10.5): The number of carbon atoms of the thio group is 1 〇 and the number of repeats of the oxy-ethyl group (extended ethyl oxide) The average addition of the molar number is 4 counties of the county. Commodity name; Noi to Enyi ^ 仞, the first industrial pharmaceutical system. <Evaluation of liquid stability> [Evaluation of appearance] Each of the detergent compositions prepared in accordance with the compositions shown in Tables 3 to 4 was individually packed in a lGmL tight-sealing bottle at room temperature (present) After standing, the appearance was visually observed. The right side is uniform and transparent, and the white turbidity to the second layer separated state is 27 201016840 X, and the results are shown in Table 3 and Table 4. Here, "white turbidity" means that the entire aqueous solution is in an opaque state. "Second layer separation" means that the oil layer is separated from the water layer. [Measurement of cloud point] For each of the detergent compositions, the detergent group was prepared under u~ pit, and a uniform and transparent solution was prepared, and then the solution was immersed in the glass 4 The official, / text collapse in the water bath 'to make the water bath temperature rise at a rate of minutes' by reading the standard thermometer scale to determine the temperature of the solution when the solution began to become cloudy. The results are shown in Tables 3 and 4. φ <Evaluation of liquid crystal soil cleaning power> The liquid crystal soil cleaning power was evaluated in the order of the following 1) to 7). -D As in the above evaluation (1), the liquid crystal panel shown in Fig. 1 was produced, and a liquid crystal material for a TF T liquid crystal panel was injected into a space (narrow portion) of the liquid crystal panel by an injection device. 2) 2 〇g of each of the detergent compositions was placed in a 丨〇〇mL beaker, each

80 g of ion-exchanged water (four times the amount of water of the detergent composition) was diluted with the above-mentioned G detergent composition to prepare a 2% by mass aqueous solution. Then, the appearance of the 2% by mass aqueous solution was visually observed after 1 second passed after the last stop of the stirring. The results are shown in Tables 3 and 4. In the table, "white turbidity" means that the entire aqueous solution is in an opaque state. "Second layer separation" means that the oil layer is separated from the water layer. 3) 2 〇g of 20% by mass aqueous solution of each example was placed in a 1 〇〇 mL beaker, and stirring was continued (6 rpm) with a stirrer of 2 cm in length, while the void 28 201016840 (slit) was injected. The liquid crystal panel of the liquid crystal material was immersed in the aforementioned 20% by mass aqueous solution at 45 ° C for 15 minutes. 4) Take out the LCD panel and wash each side with ion-exchanged water for about 5 seconds. 5) 50 g of ion-exchanged water was placed in a 100 mL beaker, and the liquid crystal panel was immersed at 45 ° C for 10 minutes (rinsing step). 6) The liquid crystal panel was taken out and dried in a dryer at 100 ° C for 10 minutes. 7) The residual state of the liquid crystal material in the void (narrow part) in the designated area (X in the first drawing) Φ is visually observed by a polarizing microscope, and the evaluation is based on the same evaluation criteria as above (pass: 4 points or more). The cleansing power of liquid crystal dirt. The results are shown in Tables 3 and 4. [table 3]

Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11 (Sal) Ingredient PXDM 50 50 50 30 30 30 50 Water 20 20 20 10 10 10 20 (S2) Component C4E3 30 C6E8 30 Ph -G E03 Molar 10 Ethanol 30 C10E14 (HLB=15.9) 20 DMSO 60 DMF 60 Propionate 60 Liquid Stability Appearance Cloud Point (°C) 30°C 42〇C 46 °C 50° C Above 50 ° C to 50 ° C Above 50 ° C Above 20 % by mass of aqueous solution Appearance white turbid white turbid white turbid white turbid white turbid white turbidity Washing power against liquid crystal dirt 5 minutes 5 points 5 points 5 points 4 points 4 minutes 4 points 29 201016840 [Table 4] Example 12 Example 13 Example 14 Example 15 Example 16 Example 17 Example 18 Example 19 Comparative Example 9 (Sal) Ingredient PXDM 40 20 50 50 50 55 50 50 (Sal') Composition Ten Dioxane 50 Water 20 20 20 20 20 15 20 20 20 (S2) Component C4E3 15 20 20 15 20 20 Ph-G E03 Moor 10 C10E14 (HLB=15.9) 20 4 30 C8E20 (HLB=17.4) 20 10 6 15 10 C10E5 (HLB=11. 6) 60 DMSO 5 (S2,) Ingredient C10E4 (HLB10.5) 10 Liquid stability Appearance 〇 〇 〇 〇 〇 〇 〇 X X Cloud point ro 49〇C 48. . 46〇C 48°C 46 ～47 °C 46〇C 50°C or more _ _ 20% by mass aqueous solution appearance white turbid white turbid white turbid white turbid white turbid white turbid white turbid white turbidity two layers separation liquid crystal dirt washing power 5 minutes 4 points 5 points 5 5 minutes, 5 minutes, 5 minutes, 5 minutes, 1 minute, 3 to 4 results, the appearance of the detergent compositions of Examples 5 to 18 are all

It is uniformly transparent and can be confirmed to have a high detergency against liquid crystal dirt. Further, it was confirmed that the cloud compositions of the detergent compositions of Examples 5 to 18 were all above 30 °C.

With respect to the detergent composition of Example 19 which used the (S2') component which is different from the component (S2), it was confirmed that the liquid crystal soil had a high cleaning power and a uniform transparent appearance was obtained. On the other hand, in the detergent composition of Comparative Example 9 using dodecane different from the (Sal) component, it was confirmed that the cleaning property against liquid crystal soil was low, and a uniform transparent appearance could not be obtained. Therefore, it has been confirmed that the detergent composition in which the (Sal) component, the water and the (S2) component are mixed exhibits a uniform and transparent appearance, and is excellent in liquid stability (uniformity and transparency). In addition, since it can be diluted by water and used at a low concentration (Sal) to 30 201016840 minutes, the drainage load to the environment can be reduced, and it has been confirmed that the liquid crystal dirt has a detergency. Further, in the evaluation (2), when the liquid crystal panel was washed, the aqueous solution of 2% by mass of the detergent compositions of Examples 5 to 19 was white turbid. By washing the white turbid aqueous solution with the liquid crystal panel as described above, it was confirmed that the detergent composition and the cleaning method of the present invention can obtain a good cleaning effect on the liquid crystal soil. Further, it has been confirmed that the white turbid aqueous solution can be easily removed from the liquid crystal panel by the rinsing step. INDUSTRIAL APPLICABILITY The present invention can provide a detergent composition for removing liquid crystals which has a high detergency to liquid crystal dirt and which can reduce a drainage load on a fading environment, and - can be sufficiently removed from adhesion A method of cleaning a liquid crystal panel in a gap (narrow portion) of a liquid crystal panel and reducing a drainage load on the environment. Brief Description 3 [Fig. 1] shows an empty ® liquid helium panel before injection of a liquid crystal material used in the present embodiment, and Fig. (a) is a schematic perspective view of the liquid crystal panel. Fig. 1(b) is a partial side view of the liquid crystal surface viewed from the side of the end portion 1bl of the glass substrate 1b in Fig. 1(a). . [Fig. 2] A photograph showing the state of residual liquid crystal material in the void (narrow portion) in the designated area of the liquid crystal panel according to the evaluation criteria of the present embodiment. [Description of main component symbols] la glass substrate 2

Ul end 3 liquid crystal chamber lb glass substrate 4 void portion 31 201016840 5 liquid crystal material 6 electrode 10 liquid crystal panel X designated area

32

Claims (1)

201016840 VII. Patent application scope: 1. A detergent composition for removing liquid crystal, characterized by containing an aromatic compound represented by the general formula (1), [Chemical Formula 1] [wherein R1 represents OCH3 or CH2OCH3, and R2 represents CH3, OCH3 or ch2och3]. 2. The detergent composition for removing liquid crystal according to the first aspect of the patent application, wherein the aromatic compound represented by the above formula (1) is mixed with water. 3. The detergent composition for removing liquid crystal according to item 2 of the patent application, wherein the mixture is further mixed with at least one selected from the group consisting of: (2) The compound represented by the above, a nonionic surfactant of HLB11 or more, and an aprotic polar organic solvent are formed. [Chemical 2] R3-〇-^c_0)rH (2) [wherein, R3 represents a carbon number of 1~ An alkyl group, a phenyl group or a benzyl group of 6 and a η system represent a number of 0 to 50]. A method of cleaning a liquid crystal panel, which comprises using a detergent composition 33 for removing liquid crystals according to any one of claims 1 to 3. 201016840 34