Classifications

• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/43—Solvents
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic compounds
  • C11D1/72—Ethers of polyoxyalkylene glycols
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/164—Organic compounds containing a carbon-carbon triple bond
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
  • C11D2111/10—Objects to be cleaned
  • C11D2111/14—Hard surfaces
  • C11D2111/22—Electronic devices, e.g. PCBs or semiconductors

Definitions

• Liquid crystal panel cleaning agent and method for producing liquid crystal panel including cleaning step using this cleaning agent
• a liquid crystal panel cleaning agent used in a liquid crystal panel manufacturing process which relates to a liquid crystal panel cleaning agent comprising (A) a hydrocarbon solvent, (B) a surfactant, and (C) a water-soluble organic solvent. .
• liquid crystal panel two substrates on which transparent electrodes are formed are bonded to each other so that the inside is hollow at an appropriate interval, thereby forming a space for filling the liquid crystal.
• Liquid crystal is sealed in this space, the injection port is sealed, voltage is applied to the electrodes between the upper and lower substrates, and image display is performed using changes in the alignment direction of the liquid crystal, phase conversion, etc. It is.
• Liquid crystal molecules that are polarized compounds are known to be difficult to disperse or dissolve in aqueous systems because they exhibit hydrophobicity with strong intermolecular interactions. For this reason, in order to clean the residual liquid crystal, a cleaning agent to which an ionic activator, an ionic emulsifier or the like is added is used (see Patent Documents 1 and 2).
• Patent Document 1 discloses a detergent containing an ammonium cation and a phosphate ester-one equivalent salt. This salt makes it possible to prevent the electrolytic corrosion of the liquid crystal panel after washing.
• Patent Document 2 discloses a cleaning agent containing a highly lipophilic nonionic surfactant. By containing a non-one surfactant, it is possible to prevent environmental pollution.
• Patent Document 1 Japanese Unexamined Patent Publication No. 2000-313899
• Patent Document 2 Japanese Patent No. 2982975
• a detergent containing a salt composed of such an ammonium cation and phosphate ester-on, etc. Is generally known to have high electrical conductivity, and if a cleaning agent with such a structure remains, the operation speed of the liquid crystal panel may be reduced or the power consumption may be increased. In some cases, corrosion may occur on the metal (particularly molybdenum) used as the electrode. Therefore, a cleaning agent having low conductivity is desired.
• the cleaning agent disclosed in Patent Document 2 includes a surfactant and a water-soluble organic solvent as constituent components, the liquid crystal cannot be easily dissolved.
• an object of the present invention is to provide a cleaning liquid having a high cleaning ability that has low conductivity and can easily dissolve liquid crystals.
• the present inventors have found that by adding a hydrocarbon solvent to the cleaning agent, it is possible to provide a cleaning liquid capable of easily dissolving the liquid crystal, and the present invention has been completed.
• the present invention is a liquid crystal panel cleaning agent used in a liquid crystal panel manufacturing process, and comprises (A) a hydrocarbon solvent, (B) a surfactant, and (C) a water-soluble organic solvent.
• a hydrocarbon solvent e.g., a hydrocarbon solvent
• B e.g., a hydrocarbon solvent
• C e.g., a surfactant
• the present invention also provides a method for diluting a liquid crystal panel cleaning agent comprising 10% by mass to 70% by mass of (E) water mixed with the liquid crystal panel cleaning agent.
• the present invention provides a method for manufacturing a liquid crystal panel including a cleaning step using the liquid crystal panel cleaning agent.
• the present invention it is possible to provide a cleaning agent having a high detergency capable of easily dissolving liquid crystal, low electrical conductivity, and low damage to liquid crystal panel constituent members. It was. In addition, by adding a predetermined amount of water to such a cleaning agent, the cleaning agent It became possible to adjust the cleaning ability. Therefore, by using the cleaning agent according to the present invention, it is possible to manufacture a highly reliable liquid crystal panel that is less prone to cleaning failure, rinsing failure, metal corrosion, and the like.
• the cleaning agent according to the present invention includes (A) a hydrocarbon solvent, (B) a surfactant, and (C) a water-soluble organic solvent.
• the “cleaning agent” in the present invention refers to both a stock solution before dilution by adding water and a diluted solution after dilution.
• the cleaning agent according to the present invention contains (A) a hydrocarbon solvent.
• (A) a hydrocarbon solvent By containing the (A) hydrocarbon solvent, it becomes possible to easily dissolve the hydrophobic liquid crystal. This makes it possible to provide excellent cleaning performance.
• the hydrocarbon solvent is at least one selected from a terpene solvent, a saturated hydrocarbon solvent having 8 to 16 carbon atoms, and a group force that can also be an unsaturated hydrocarbon solvent having 8 to 16 carbon atoms. It is preferable. Among these, it is preferable to use an unsaturated hydrocarbon solvent having 8 to 16 carbon atoms because it is safe and easy to handle.
• Terpene solvents include monoterpenes such as geraol, nerol, linalool, citral, citronellol, p-menthane, diphenylmenthane, menthol, isomenthol, neomenthol, limonene, dipentene, terbinolol, carvone , Youngon, Young, Camphor, Bornan, Borneol, Norbornane, Pinan, ⁇ -Pinene, j8-Pinene, Jijan, attgejon, 13thgejon, Karan, Camphor, at-Terbinene, 13 Terpinene, ⁇ Terpinene; Diterpenes , Abietan, abietic acid; as sesquiterpenes, fanenol, nerolidol, humulene, caryophyllene, elemental, casinomen, kazinene, utchin, juvenile hormone; as sesterterpene
• the saturated hydrocarbon solvent and unsaturated hydrocarbon solvent having 8 to 16 carbon atoms are linear, branched Any of a shape and a ring may be sufficient. Specific examples include octane, nonane, decane, undecane, dodecane, otaten, nonene, decene, dodecene and the like. Although these are generally commercially available, it is preferable to use dodecene and tetradecene from the viewpoint of detergency and drying speed. These may be used alone or in combination of two or more.
• the content of the (A) hydrocarbon solvent is preferably 0.01% by mass to 20% by mass, particularly 0.1% by mass to 10% by mass in the cleaning agent. Is preferred. By setting the blending amount of the hydrocarbon solvent in such a range, the storage stability of the cleaning agent is excellent and high cleaning performance can be obtained.
• the cleaning agent according to the present invention further contains (B) a surfactant.
• a surfactant By containing this (B) surfactant, it becomes possible to uniformly solubilize each component without phase separation.
• a nonionic surfactant is preferably used.
• a non-ionic surfactant By using a non-ionic surfactant, it becomes possible to lower the electrical conductivity as well as improve the corrosion resistance of the cleaning agent to the metal.
• nonionic surfactant (bl) a hydrophilic surfactant having an average HLB value of 8 or more, and (b2) a lipophilic surfactant having an average HLB value of 8 or less, alone or in combination. Can be used. By using these in combination, it is possible to provide a more stable cleaning agent that is more difficult to separate into phases.
• Nonionic surfactants include polyoxyalkylene alkyl ether, polyoxyalkylene alkyl phenyl ether, polyoxyalkylene alkyl fatty acid ester, polyoxyalkylene aryl phenyl ether, polyoxyalkylene sorbitan fatty acid ester. And at least one selected from the group consisting of sorbitan fatty acid ester and polyoxyalkylene power.
• polyoxyalkylene examples include polyethylene oxide, polypropylene oxide, and polybutylene oxide.
• the added mole number has a certain degree of dispersion, but it is preferable to adjust the average added mole number to a range of 1 to 50 moles. Yes.
• the alkyl group constituting the polyoxyalkylene terminal ether compound preferably has 6 to 18 carbon atoms. Specific examples include hexyl, heptyl, octyl, nonyl, decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, and the like. It is.
• Such an alkyl group may be a branched alkyl group or a cyclic alkyl group (whether a single ring or a complex ring) as long as it is within the above-mentioned carbon number range. Alternatively, it may have an unsaturated bond, or a part of the hydrogen atom may be substituted with an alcoholic hydroxyl group.
• fatty acids include heptanoic acid, octanoic acid, nonanoic acid, decanoic acid, dodecanoic acid, tetradecanoic acid, pentadecanoic acid, hexadecanoic acid, heptadecanoic acid, and octadecanoic acid.
• acyl group having 1 to 18 carbon atoms include, for example, a formyl group, a acetyl group, an acryloyl group, a propiol group, a petityl group, an isoptylyl group, a hexanol group, an otachinol group, and a benzoyl group. Group, 2-naphthoyl group and the like.
• Nonionic surfactants can use commercially available surfactants, for example, New Coal series (trade name: manufactured by Nippon Emulsifier Co., Ltd.), Softanol series (trade name: manufactured by Nippon Shokubai Co., Ltd.), etc. Is mentioned.
• the cleaning agent according to the present invention is most preferably used in combination of (bl) a hydrophilic surfactant and (b2) a lipophilic surfactant.
• lipophilic surfactant includes HL among the above-mentioned nonionic surfactants.
• the content of the surfactant (B) is 1% by mass to 80% by mass in the cleaning agent.
• the content is preferably 3% to 60% by mass.
• the following ionic surfactant may be appropriately added to the (B) surfactant as long as the electrical conductivity is not significantly increased.
• ionic surfactants include known cationic surfactants, anionic surfactants, and amphoteric surfactants.
• Examples of the cationic surfactant include alkyl betaine surfactants, amide betaine surfactants, sulfobetaine surfactants, hydroxysulfobetaine surfactants, and amide sulfobetaine surfactants.
• Agents phosphobetaine surfactants, imidazoline betaine surfactants, aminopropionic acid surfactants, amino acid surfactants, and the like. More specifically, alkyl betaines, amidopropyl betaines, lauryl hydroxysulfobetaines, 2-alkyl-N-carboxymethyl N hydroxy cetylimidazolium umbetaines, lauryl iminodipropionic acids and the like can be mentioned.
• anionic surfactant examples include alkyl sulfonates, alkyl sulfates, acylated amino acid salts, polyoxyethylene alkyl ether sulfates, alkylbenzene sulfonates, N-acyl-N-methyl taurate salts, Examples include a-olefin sulfonate, higher fatty acid ester sulfonate, alkyl ether acetate, polyoxyethylene alkyl ether acetate, fatty acid soap, and alkyl phosphate ester salt.
• the salts used herein include metal salts such as sodium, potassium, magnesium, etc .; ammonium salts; monoethanol ammonium salts, diethanol ammonium salts, trihetanoic ammonium salts, etc. Organic ammonium salt is preferred.
• amphoteric surfactant examples include salt surfactants.
• the cleaning agent according to the present invention further contains (C) a water-soluble organic solvent.
• a water-soluble organic solvent By containing this (C) water-soluble organic solvent, the solubility of the cleaning agent in water can be improved.
• a water-soluble organic solvent alkanolamines, alkylamines, polyalkylenepolyamines, glycols, ethers, ketones, acetates, and rubonic acid esters are also selected. It is preferable that it is at least one kind.
• alkylamines include 2-ethylhexylamine, dioctylamine, tributylamine, tripropylamine, triallylamine, heptylamine, cyclohexylamine and the like.
• polyalkylenepolyamines include diethylenetriamine, triethylenetetramine, propylenediamine, N, N-decylethylenediamine, N, N'-jetylethylenediamine, 1,4 butanediamine, Nethylenoethylenediamine, 1,2 propandamine, 1,3 propanediamine, 1,6 hexanediamine and the like.
• glycols include ethylene glycol, diethylene glycol, propylene glycol, glycerin, 1,2 butylene glycol, 1,3 butylene glycol, 2,3 butylene glycol, polyoxyalkylene glycol, and the like. Can be mentioned.
• ketones include acetone, methyl ethyl ketone, jetyl ketone, methyl propyl ketone, methyl isobutyl ketone, methyl amyl ketone, GE soap pill ketone, cyclobutanone, cyclopentanone, cyclohexanone, and the like. Is mentioned.
• carboxylic acid esters include alkyl group mono- or aliphatic monostrength rubonic acid esters, monooxycarboxylic acid esters, and the like. Specific examples include methyl lactate.
• polyoxyalkylene glycol butyl diglycol, ethyl diglycol, butyl dallicol, ethyl dallicol or the like because of its high solubility in water.
• the content of such a water-soluble organic solvent (C) is preferably 10% by mass to 80% by mass in the cleaning agent, and particularly preferably 15% by mass to 70% by mass. .
• the cleaning agent according to the present invention may contain an anticorrosive agent (preservative) in order to prevent corrosion of the metal serving as the electrode.
• anticorrosives include xylitol, glucose, mannose, galactose, sorbitol, mannitol, benzotriazole, glycerol, 3— (2 aminophenol-thiol) 2 hydroxypropyl mercaptan, 3— (2 hydroxyxetylthio) 2-hydroxypropyl mercaptan, 2-mercaptopropionic acid, 3-mercaptopropionic acid, catechol, pyrogallol, gallic acid, and the like can be used.
• xylitol and thioglycerol are preferably used.
• the content of the anticorrosive agent (D) is preferably less than 10% by mass in the detergent, and particularly preferably less than 5% by mass. Corrosion can be effectively prevented by setting the amount of the anticorrosive in such a range.
• the cleaning agent according to the present invention can contain optional components as necessary, such as an antifoaming agent and a stabilizer.
• an antifoaming agent examples include acetylenol surfactants, acetylene alcohol, acetylene glycol, and the like.
• the content of the antifoaming agent is preferably less than 3% by mass in the cleaning agent.
• Examples of the acetylene alcohol surfactant include the following general formula (1) (where R represents a hydrogen atom or a group represented by the following formula (2); R, R, R, R are: Germany
• a compound represented by a hydrogen atom and an alkyl group having 1 to 18 carbon atoms is preferably used.
• acetylene alcohol surfactants are commercially available, for example, as “Surfinol”, “Orphine” (named above, both manufactured by Air Products & Chemicals). Has been. Among them, it is preferable to use “Surfinol 104”, “Surfinol 82”, or a mixture thereof in view of their physical properties. In addition, “Olphin B”, “Ol “Fin P”, “Olfin Y”, etc. can also be used.
• a compound obtained by adding alkylene oxide to the above acetylene alcohol can also be used.
• the alkylene oxide added to the acetylene alcohol it is preferable to use ethylene oxide, propylene oxide, or a mixture thereof.
• R 6 is a hydrogen atom or the following formula (4)
• the acetylene alcohol 'alkylene oxide adduct is a substance known per se as a surfactant. These are commercially available as a series of “Surfinol” (manufactured by Air Product and Chemicals Inc.) or a series of “acetyleneol” (manufactured by Kawaken Fine Chemical Co., Ltd.) and are preferably used.
• this cleaning agent is diluted with (E) water
• the amount of water added is 10% in the cleaning agent. It is preferred that the amount is 70% by mass.
• Examples of the dilution method include a method in which a composition other than water is mixed to prepare a cleaning agent, and then water is added to a desired concentration.
• Liquid crystals that can use the cleaning agent according to the present invention are not particularly limited.
• Any liquid crystal such as TFT liquid crystal, STN liquid crystal, and TN liquid crystal can be washed.
• the liquid crystal panel is manufactured by performing a cleaning process using the cleaning agent according to the present invention on a liquid crystal panel in which liquid crystal is injected by a known manufacturing method.
• the cleaning process include immersion cleaning and shower cleaning methods that are not particularly limited, and furthermore, a cleaning method that combines these with ultrasonic waves and vibrations can be applied.
• a method of washing the liquid crystal panel by a method of immersing the liquid crystal panel in the cleaning agent according to the present invention, performing ultrasonic treatment to wash, and washing off the washing liquid with a rinsing liquid may be mentioned.
• the cleaning temperature is appropriately determined depending on the setting of the apparatus, but is usually 10 ° C to 70 ° C.
• the washing time is also appropriately determined depending on the setting of the equipment, but 2 component force is usually 10 minutes.
• Examples of the rinsing method after cleaning include immersion rinsing with pure water (ion exchange water), spray rinsing, ultrasonic rinsing, rocking rinsing, and the like.
• the rinse temperature is usually 10 ° C to 70 ° C.
• the liquid crystal panel is rinsed and then dried by heating in the temperature range of 20 ° C to 70 ° C.
• Cleaning agents were prepared with the compositions shown in Table 1 and used as samples 1 to 6, respectively. Note that the cleaning agent of sample 1 and force 4 is a cleaning agent having the composition according to the present invention, and the cleaning agents of samples 5 to 6 are compared. Control detergent.
• Softanol 120 (trade name: manufactured by Nippon Shokubai Co., Ltd .; polyoxyethylene alkyl alcohol ether) is used for the cleaning agents of Samples 1 to 5, and A32B (trade name: Takemoto) for the cleaning agent of Sample 6.
• a fat-based surfactant (manufactured by Yufu Co., Ltd.) was used.
• component (b2) all of the detergents in Samples 1 to 5 were used as NOON E-202 (trade name: manufactured by Nippon Oil &Fats; polyoxyethylene glycol ether), and as component (C)
• the sample 1 to 5 used the detergent, but also used ptyl diglycol (BDG). All figures in parentheses in the table are mass%.
• the formed substrate was immersed in samples 1 to 6 for 10 minutes at a temperature of 50 ° C., and evaluated by measuring the decrease in the film thickness of molybdenum.
• the liquid crystal detergency and solubility tests were evaluated by dissolving the liquid crystal components in samples 1 to 6 and visually observing the liquid crystal detergency and solubility. The results are shown in Table 1.
• the cleaning agent according to the present invention has less corrosion on the metal, is excellent in liquid crystal detergency and solubility, and further has a low electrical conductivity, and thus has an adverse effect on the electric characteristics of the liquid crystal display element. It was divided that it was not.

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• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Detergent Compositions (AREA)
• Liquid Crystal (AREA)

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Citations (5)

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• 2006
  • 2006-03-09 JP JP2006063542A patent/JP5324028B2/ja not_active Expired - Lifetime
• 2007
  • 2007-03-06 WO PCT/JP2007/054302 patent/WO2007102494A1/ja not_active Ceased
  • 2007-03-07 TW TW096107919A patent/TW200804586A/zh unknown

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