JP2015078315A - Hydrophilicity improver, method for improving film hydrophilicity, and hydrophilic treated film - Google Patents
Hydrophilicity improver, method for improving film hydrophilicity, and hydrophilic treated film Download PDFInfo
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- JP2015078315A JP2015078315A JP2013216764A JP2013216764A JP2015078315A JP 2015078315 A JP2015078315 A JP 2015078315A JP 2013216764 A JP2013216764 A JP 2013216764A JP 2013216764 A JP2013216764 A JP 2013216764A JP 2015078315 A JP2015078315 A JP 2015078315A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000011248 coating agent Substances 0.000 claims abstract description 46
- 238000000576 coating method Methods 0.000 claims abstract description 38
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 31
- 229920001709 polysilazane Polymers 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 150000007524 organic acids Chemical class 0.000 claims abstract description 17
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 9
- 150000003862 amino acid derivatives Chemical class 0.000 claims abstract description 6
- 229910017464 nitrogen compound Inorganic materials 0.000 claims abstract description 5
- 150000002830 nitrogen compounds Chemical class 0.000 claims abstract description 5
- 239000002253 acid Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 abstract description 2
- 239000010408 film Substances 0.000 description 22
- 239000002585 base Substances 0.000 description 16
- 239000000243 solution Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000003373 anti-fouling effect Effects 0.000 description 6
- 239000000654 additive Substances 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- WQEPLUUGTLDZJY-UHFFFAOYSA-N pentadecanoic acid Chemical compound CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- KEMQGTRYUADPNZ-UHFFFAOYSA-N heptadecanoic acid Chemical compound CCCCCCCCCCCCCCCCC(O)=O KEMQGTRYUADPNZ-UHFFFAOYSA-N 0.000 description 2
- MNWFXJYAOYHMED-UHFFFAOYSA-N heptanoic acid Chemical compound CCCCCCC(O)=O MNWFXJYAOYHMED-UHFFFAOYSA-N 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- SECPZKHBENQXJG-FPLPWBNLSA-N palmitoleic acid Chemical compound CCCCCC\C=C/CCCCCCCC(O)=O SECPZKHBENQXJG-FPLPWBNLSA-N 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 150000004671 saturated fatty acids Chemical class 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- SZHOJFHSIKHZHA-UHFFFAOYSA-N tridecanoic acid Chemical compound CCCCCCCCCCCCC(O)=O SZHOJFHSIKHZHA-UHFFFAOYSA-N 0.000 description 2
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- UNWFFCPRJXMCNV-UHFFFAOYSA-N 3-[dodecanoyl(methyl)amino]propanoic acid Chemical compound CCCCCCCCCCCC(=O)N(C)CCC(O)=O UNWFFCPRJXMCNV-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 1
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000005639 Lauric acid Substances 0.000 description 1
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 1
- BACYUWVYYTXETD-UHFFFAOYSA-N N-Lauroylsarcosine Chemical compound CCCCCCCCCCCC(=O)N(C)CC(O)=O BACYUWVYYTXETD-UHFFFAOYSA-N 0.000 description 1
- OPKOKAMJFNKNAS-UHFFFAOYSA-N N-methylethanolamine Chemical compound CNCCO OPKOKAMJFNKNAS-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 235000021314 Palmitic acid Nutrition 0.000 description 1
- 235000021319 Palmitoleic acid Nutrition 0.000 description 1
- 239000005643 Pelargonic acid Substances 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 235000021322 Vaccenic acid Nutrition 0.000 description 1
- UWHZIFQPPBDJPM-FPLPWBNLSA-M Vaccenic acid Natural products CCCCCC\C=C/CCCCCCCCCC([O-])=O UWHZIFQPPBDJPM-FPLPWBNLSA-M 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 125000004442 acylamino group Chemical group 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 description 1
- 235000020661 alpha-linolenic acid Nutrition 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001414 amino alcohols Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- -1 aromatic carboxylic acids Chemical class 0.000 description 1
- 239000003849 aromatic solvent Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- SECPZKHBENQXJG-UHFFFAOYSA-N cis-palmitoleic acid Natural products CCCCCCC=CCCCCCCCC(O)=O SECPZKHBENQXJG-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 239000012776 electronic material Substances 0.000 description 1
- 239000005357 flat glass Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000001261 hydroxy acids Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 235000020778 linoleic acid Nutrition 0.000 description 1
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 description 1
- 229960004488 linolenic acid Drugs 0.000 description 1
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229960002446 octanoic acid Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007761 roller coating Methods 0.000 description 1
- 108700004121 sarkosyl Proteins 0.000 description 1
- 235000003441 saturated fatty acids Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- UWHZIFQPPBDJPM-BQYQJAHWSA-N trans-vaccenic acid Chemical compound CCCCCC\C=C\CCCCCCCCCC(O)=O UWHZIFQPPBDJPM-BQYQJAHWSA-N 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 229940005605 valeric acid Drugs 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
Description
本発明は、ポリシラザン由来のシリカ被膜の親水性を向上させるための親水性向上剤、被膜の親水性向上方法、及び親水処理被膜に関する。 The present invention relates to a hydrophilicity improver for improving the hydrophilicity of a polysilazane-derived silica coating, a method for improving the hydrophilicity of a coating, and a hydrophilic treatment coating.
ポリシラザンは、「‐(SiH2NH)‐」を基本ユニットとする無機ポリマーである。このポリシラザンが有機溶媒等に溶解されたコーティング溶液を基材に塗布した後、長時間経過すると、大気中の水分と反応して脱アンモニア反応が起こり、基材との密着性に優れた緻密なシリカ被膜が形成されることが知られている。 Polysilazane is an inorganic polymer having “— (SiH 2 NH) —” as a basic unit. After applying a coating solution in which this polysilazane is dissolved in an organic solvent or the like to a substrate, after a long time, it reacts with moisture in the atmosphere to cause a deammonia reaction, resulting in a dense and excellent adhesion to the substrate. It is known that a silica coating is formed.
このシリカ被膜は、薄く、透光性があり、しかも耐候性、防護性、艶出し性等に優れるため、例えば、自動車の車体や、建築物の内外装、トイレ、台所、洗面所、浴槽などの水回り製品、看板、標識、プラスチック製品、ガラス製品等の各種製品の表面処理において好適に利用されている。 This silica coating is thin, translucent, and excellent in weather resistance, protective properties, glossiness, etc., for example, automobile bodies, interior and exterior of buildings, toilets, kitchens, toilets, bathtubs, etc. It is suitably used in the surface treatment of various products such as water-based products, signboards, signs, plastic products, and glass products.
最近では、このポリシラザン由来のシリカ被膜に親水性を付与し、もって防汚特性を向上させる手段が開発されている(例えば、下記特許文献1、2参照)。 Recently, means for imparting hydrophilicity to the polysilazane-derived silica coating to improve antifouling properties has been developed (for example, see Patent Documents 1 and 2 below).
前記特許文献1には、ポリシラザンを含有するコーティング溶液を基材に塗布した後、アニオン性界面活性剤5〜25重量%、両性界面活性剤0.5〜20重量%、非イオン界面活性剤4〜6重量%、及び必要に応じ防腐剤を含有し、有機酸でpH4.5〜7.0に調整された水溶液(親水性促進剤)で処理することによって、接触角が30〜40度程度の親水性をシリカ被膜に付与し得る旨が開示されている。 In Patent Document 1, after a coating solution containing polysilazane is applied to a substrate, the anionic surfactant is 5 to 25% by weight, the amphoteric surfactant is 0.5 to 20% by weight, and the nonionic surfactant 4 is used. By treating with an aqueous solution (hydrophilic accelerator) adjusted to pH 4.5-7.0 with an organic acid, containing a preservative if necessary, the contact angle is about 30-40 degrees. It is disclosed that the hydrophilicity of can be imparted to the silica coating.
しかしながら、より高い防汚効果が要求されている昨今、30〜40度程度の接触角では、もはや十分な防汚効果を発現する親水性があるとは必ずしも言えなくなってきている。 However, in recent years when a higher antifouling effect is required, it can no longer be said that the contact angle of about 30 to 40 degrees has hydrophilicity that exhibits a sufficient antifouling effect.
一方、前記特許文献2には、ポリシラザンを含有するコーティング溶液を基材に塗布した後、トリエタノールアミン水溶液などのアルカリ溶液で処理することによって、接触角20度以下の親水性をシリカ被膜に付与し得る旨が開示されている。 On the other hand, in Patent Document 2, a coating solution containing polysilazane is applied to a substrate and then treated with an alkaline solution such as an aqueous solution of triethanolamine to impart hydrophilicity with a contact angle of 20 degrees or less to the silica coating. It is disclosed that this is possible.
しかしながら、特許文献2において例示されているアルカリ水溶液は、いずれもpH10以上の高い塩基性を示すため、シリカ被膜が溶解されて、薄く脆弱になる場合が往々にしてある。 However, since all of the alkaline aqueous solutions exemplified in Patent Document 2 exhibit a high basicity of pH 10 or higher, the silica coating is often dissolved to become thin and fragile.
本発明は前記技術的課題に鑑みて開発されたものであり、水素イオン濃度指数が中性付近にありながら、ポリシラザン由来のシリカ被膜に対して十分な親水性を付与することができる新規な親水性向上剤、この親水性向上剤を用いた被膜の親水性向上方法、及びこの方法にて処理された親水処理被膜を提供することを目的とする。 The present invention has been developed in view of the above technical problem, and has a novel hydrophilic property capable of imparting sufficient hydrophilicity to a polysilazane-derived silica coating while the hydrogen ion concentration index is in the vicinity of neutrality. An object of the present invention is to provide a property improving agent, a method for improving the hydrophilic property of a film using the hydrophilic property improving agent, and a hydrophilic treatment film treated by this method.
前記技術的課題を解決するために、本発明の親水性向上剤は、基材の表面に親水性の高いポリシラザン由来のシリカ被膜を形成するための親水性向上剤であって、塩基成分としての窒素化合物と、酸成分としての有機酸、又は前記有機酸によってN-アシル化されたアミノ酸誘導体と、を少なくとも含有する水溶液となされてなり、pH6〜9の水素イオン濃度指数を有してなることを特徴とする。 In order to solve the above technical problem, the hydrophilicity improver of the present invention is a hydrophilicity improver for forming a highly hydrophilic polysilazane-derived silica film on the surface of a substrate, and as a base component An aqueous solution containing at least a nitrogen compound and an organic acid as an acid component, or an amino acid derivative N-acylated with the organic acid, and having a hydrogen ion concentration index of pH 6-9. It is characterized by.
本発明において、「基材」の素材は特に限定されない。前記基材の素材は、例えば、鉄、銅、アルミニウム、合金などの金属や、セラミック、ガラス、プラスチック等のいずれであっても良い。又、被膜が形成される前記基材の「表面」は、外面のみならず、内面、側面、底面等のいずれの面でも良く、係る表面が平坦面である必要はない。 In the present invention, the material of the “base material” is not particularly limited. The material of the base material may be any metal such as iron, copper, aluminum, alloy, ceramic, glass, plastic, and the like. Further, the “surface” of the base material on which the film is formed may be any surface such as not only the outer surface but also the inner surface, the side surface, and the bottom surface, and the surface need not be a flat surface.
本発明において、「ポリシラザン由来のシリカ被膜」とは、ポリシラザンを含有するコーティング溶液を基材に塗布し、乾燥させることによって形成されたシリカ被膜を意味する。このポリシラザン由来のシリカ被膜は、コーティング溶液中に含まれるポリシラザンの一部ないし全部がシリカに転化したものである。従って、ポリシラザン由来のシリカ被膜には、ポリシラザンに起因する窒素成分が残存しているものも含まれる。 In the present invention, the “silica film derived from polysilazane” means a silica film formed by applying a coating solution containing polysilazane to a substrate and drying it. This silica film derived from polysilazane is obtained by converting part or all of polysilazane contained in the coating solution into silica. Accordingly, the silica coating derived from polysilazane includes those in which the nitrogen component resulting from polysilazane remains.
本発明において塩基成分として用いられる「窒素化合物」は、化合物中に一ないし複数個の窒素原子を含み、係る窒素原子上の孤立電子対により弱塩基性を示すものを意味する。このような窒素化合部としては、アンモニア、アルキルアミン、アルカノールアミン、アミノアルコール、モルホリン、ピペリジン、ピペラジン、及びこれらの誘導体等を挙げることができる。 The “nitrogen compound” used as a base component in the present invention means a compound containing one or a plurality of nitrogen atoms and showing weak basicity due to a lone electron pair on the nitrogen atom. Examples of such nitrogen compound include ammonia, alkylamine, alkanolamine, amino alcohol, morpholine, piperidine, piperazine, and derivatives thereof.
本発明においては、特に、モノエタノールアミン、ジエタノールアミン、トリエタノールアミン、N‐メチルエタノールアミン等のアルカノールアミンを塩基成分として用いることが好ましい。 In the present invention, alkanolamines such as monoethanolamine, diethanolamine, triethanolamine and N-methylethanolamine are particularly preferably used as the base component.
本発明において酸成分として用いられる「有機酸」とは、化合物中に一ないし複数のカルボキシル基を有してなり、係るカルボキシル基の存在によって弱塩基性を示すものを意味する。なお、係る有機酸は、直鎖脂肪酸又は分枝脂肪酸であっても良く、又、飽和脂肪酸であっても、不飽和脂肪酸であっても良い。 The “organic acid” used as an acid component in the present invention means one having one or more carboxyl groups in a compound and showing weak basicity due to the presence of such carboxyl groups. The organic acid may be a linear fatty acid or a branched fatty acid, and may be a saturated fatty acid or an unsaturated fatty acid.
このような有機酸の具体例としては、蟻酸、酢酸、酪酸、吉草酸、カプロン酸、エナント酸、カプリル酸、ペラルゴン酸、カプリン酸、ラウリン酸、トリデシル酸、ミリスチン酸、ペンタデシル酸、パルミチン酸、マルガリン酸、ステアリン酸等の飽和脂肪酸、パルミトレイン酸、オレイン酸、バクセン酸、リノール酸、リノレン酸等の不飽和高級脂肪酸、安息香酸等の芳香族カルボン酸、アジピン酸、セバシン酸等のジカルボン酸、乳酸、クエン酸等のヒドロキシ酸等を挙げることができる。 Specific examples of such organic acids include formic acid, acetic acid, butyric acid, valeric acid, caproic acid, enanthic acid, caprylic acid, pelargonic acid, capric acid, lauric acid, tridecylic acid, myristic acid, pentadecylic acid, palmitic acid, Saturated fatty acids such as margaric acid and stearic acid, unsaturated higher fatty acids such as palmitoleic acid, oleic acid, vaccenic acid, linoleic acid and linolenic acid, aromatic carboxylic acids such as benzoic acid, dicarboxylic acids such as adipic acid and sebacic acid, Examples thereof include hydroxy acids such as lactic acid and citric acid.
一方、本発明において前記有機酸に替えて、或いは、前記有機酸と共に用いられる「前記有機酸によってN-アシル化されたアミノ酸誘導体」とは、前記有機酸のアシル基が導入されたアミノ酸誘導体(N‐アシルアミノ酸)を意味する。 On the other hand, the “amino acid derivative N-acylated with the organic acid” used in place of the organic acid or together with the organic acid in the present invention is an amino acid derivative in which an acyl group of the organic acid is introduced ( N-acylamino acid).
このようなアミノ酸誘導体の具体例としては、ラウロイルサルコシン酸、ラウロイルメチルアラニン等のN‐長鎖脂肪酸アシルアミノ酸等を挙げることができる。 Specific examples of such amino acid derivatives include N-long chain fatty acylamino acids such as lauroyl sarcosine acid and lauroyl methylalanine.
但し、前記有機酸につき、炭素数が8未満のものを用いると、本発明の親水性向上剤の濡れ性が悪くなるため、濡れ性を向上させる界面活性剤等の添加剤を添加する必要が生じる場合がある。 However, when the organic acid having a carbon number of less than 8 is used, the wettability of the hydrophilicity improver of the present invention is deteriorated, so it is necessary to add an additive such as a surfactant for improving the wettability. May occur.
そこで、本発明の親水性向上剤においては、特に、前記酸成分における有機酸の炭素数が8〜18の範囲内(より好ましくは、10〜18の範囲内)であるものが好ましい態様となる。 Therefore, in the hydrophilicity improver of the present invention, a preferred embodiment is one in which the carbon number of the organic acid in the acid component is in the range of 8 to 18 (more preferably in the range of 10 to 18). .
ところで、本発明の親水性向上剤は、前記塩基成分と前記酸成分とを中和点にて混合させたものに限られない。前記塩基成分と前記酸成分の配合割合は、塩基成分のモル濃度×価数:酸成分のモル濃度×価数が、3:7〜7:3の範囲内(より好ましくは、4:6〜6:4の範囲内)となるようにすることが好ましい。 By the way, the hydrophilicity improver of the present invention is not limited to the one obtained by mixing the base component and the acid component at the neutralization point. The mixing ratio of the base component and the acid component is such that the molar concentration of the base component x valence: the molar concentration of the acid component x valence is in the range of 3: 7 to 7: 3 (more preferably 4: 6 to 6: 4) is preferable.
又、本発明の親水性向上剤における水素イオン濃度指数は、含有される酸成分が多くなれば酸性側にシフトし、塩基成分が多くなればアルカリ側にシフトする。本発明においては、塩酸や硫酸などの無機酸、或いは水酸化ナトリウムなどのアルカリ(アルカリ金属又はアルカリ土類金属の水酸化物)を用いて、水素イオン濃度指数を適宜調製しても良いが、含有される酸成分と塩基成分との相対割合を適宜変更することによって、水素イオン濃度指数をpH6〜9の範囲内(より好ましくは、pH7±0.5の範囲内)に調整することが好ましい。 Further, the hydrogen ion concentration index in the hydrophilicity improver of the present invention shifts to the acidic side when the contained acid component increases, and shifts to the alkaline side when the base component increases. In the present invention, the hydrogen ion concentration index may be appropriately adjusted using an inorganic acid such as hydrochloric acid or sulfuric acid, or an alkali such as sodium hydroxide (a hydroxide of an alkali metal or an alkaline earth metal). It is preferable to adjust the hydrogen ion concentration index within the range of pH 6 to 9 (more preferably within the range of pH 7 ± 0.5) by appropriately changing the relative ratio of the acid component and the base component contained. .
なお、本発明において、「〜を少なくとも含有する水溶液」とは、本発明の親水性向上剤中に、前記塩基成分及び前記酸成分以外の添加物が適宜配合されていても良いことを意味する。係る添加剤としては、濡れ性を向上するための公知の界面活性剤や防腐剤等を挙げることができる。 In the present invention, the “aqueous solution containing at least” means that additives other than the base component and the acid component may be appropriately blended in the hydrophilicity improver of the present invention. . Examples of such additives include known surfactants and preservatives for improving wettability.
本発明のポリシラザン由来のシリカ被膜の親水性向上方法は、基材の表面にポリシラザンを含有するコーティング剤を塗布し、乾燥させることによって前記基材の表面に一次被膜を形成する一次被膜形成工程と、前記一次被膜の表面に、本発明の親水性向上剤を塗布する親水化工程と、を実行することを特徴とする(以下、「本発明方法」と称する。)。 The method for improving the hydrophilicity of the polysilazane-derived silica coating of the present invention comprises a primary coating forming step of forming a primary coating on the surface of the substrate by applying a coating agent containing polysilazane to the surface of the substrate and drying it. And a hydrophilization step of applying the hydrophilicity improver of the present invention to the surface of the primary coating (hereinafter referred to as “method of the present invention”).
本発明方法において用いられる前記コーティング溶液は、含有されているポリシラザンを基材の表面にほぼ均一に塗布し得るものであれば特に限定されるものではない。 The coating solution used in the method of the present invention is not particularly limited as long as the contained polysilazane can be applied almost uniformly to the surface of the substrate.
前記コーティング溶液としては、ミネラルスピリットなどの石油溶剤や、ジブチルエーテルなどのエーテル系溶剤、パラフィン系溶剤、芳香族系溶剤、或いは環式脂肪族系溶剤等の有機溶媒にポリシラザンが溶解されてなるものが好適である。この際、コーティング溶液中のポリシラザンの含有量は、0.01〜15重量%の範囲内が好ましい。又、コーティング溶液には、ポリシラザンのシリカへの転化を促進する触媒や、濡れ性を向上するための界面活性剤等の添加剤が含まれていても良い。このようなコーティング溶液の市販例としては、例えば、AZエレクトロニックマテリアル株式会社製のNPシリーズ、NLシリーズ、NAXシリーズ等を挙げることができる。 As the coating solution, polysilazane is dissolved in an organic solvent such as petroleum solvent such as mineral spirit, ether solvent such as dibutyl ether, paraffin solvent, aromatic solvent, or cycloaliphatic solvent. Is preferred. At this time, the content of polysilazane in the coating solution is preferably in the range of 0.01 to 15% by weight. The coating solution may contain an additive such as a catalyst for promoting the conversion of polysilazane to silica and a surfactant for improving the wettability. Examples of such commercially available coating solutions include NP series, NL series, and NAX series manufactured by AZ Electronic Materials.
本発明方法において、基材に対しコーティング剤を塗布する手段としては、特に限定されるものではなく、布拭き、スポンジ拭き、スプレーコート、フローコート、ローラーコート、ディップコート等の塗布手段を適宜選択して用いることができる。又、コーティング剤の塗布量は、要求される被膜厚に応じて適宜変更すれば良く、特に限定されるものではない。 In the method of the present invention, the means for applying the coating agent to the substrate is not particularly limited, and an appropriate application means such as cloth wiping, sponge wiping, spray coating, flow coating, roller coating, dip coating or the like is appropriately selected. Can be used. The coating amount of the coating agent may be appropriately changed according to the required film thickness, and is not particularly limited.
本発明方法においては、一次被膜形成工程によって形成される一次被膜の膜厚が0.1〜2μm程度となるように、コーティング剤を一ないし複数回塗布することが好ましい。 In the method of the present invention, it is preferable to apply the coating agent one or more times so that the film thickness of the primary film formed in the primary film forming step is about 0.1 to 2 μm.
本発明方法において、基材に塗布されたコーティング剤を乾燥させる手段としては、特に限定されるものではなく、温熱乾燥、温風乾燥、冷風乾燥、減圧乾燥、自然乾燥等の乾燥手段を適宜選択して用いることができる。 In the method of the present invention, the means for drying the coating agent applied to the substrate is not particularly limited, and drying means such as hot drying, hot air drying, cold air drying, reduced pressure drying, and natural drying are appropriately selected. Can be used.
又、基材の表面に形成された一次被膜の表面に親水性向上剤を塗布する手段についても特に限定されるものではなく、布拭き、スポンジ拭き、スプレーコート、フローコート、ローラーコート、ディップコート等の塗布手段を適宜選択して用いることができる。 Further, the means for applying the hydrophilicity improver to the surface of the primary film formed on the surface of the substrate is not particularly limited, and cloth wipe, sponge wipe, spray coat, flow coat, roller coat, dip coat The application means such as can be appropriately selected and used.
親水化工程の際に用いられる親水性向上剤中の塩基成分と酸成分の総含有量は、0.01〜10重量%の範囲内が好ましい。 The total content of the base component and the acid component in the hydrophilicity improver used in the hydrophilization step is preferably in the range of 0.01 to 10% by weight.
本発明の親水処理被膜は、前記本発明方法によって処理された親水処理被膜であって、接触角が20度以下であることを特徴とする。 The hydrophilic treatment film of the present invention is a hydrophilic treatment film treated by the method of the present invention, and has a contact angle of 20 degrees or less.
本発明の親水処理被膜は、本発明の親水性向上剤にてポリシラザン由来のシリカ被膜の親水性を向上したものである。 The hydrophilic treatment film of the present invention is obtained by improving the hydrophilicity of the silica film derived from polysilazane with the hydrophilicity improver of the present invention.
なお、シリカ被膜の接触角は、小さくなれば小さくなるほど親水性が向上し、もって、防汚効果が向上する。従って、本発明の親水処理被膜の接触角は、更に、15度以下が好ましい態様となり、特に、10度以下がより好ましい態様となる。 The smaller the contact angle of the silica coating, the better the hydrophilicity and thus the antifouling effect. Therefore, the contact angle of the hydrophilic treatment film of the present invention is further preferably 15 degrees or less, and more preferably 10 degrees or less.
本発明によれば、基材の表面に形成されたポリシラザン由来のシリカ被膜の親水性を向上させることができる。 According to the present invention, the hydrophilicity of the polysilazane-derived silica coating formed on the surface of the substrate can be improved.
以下、本発明の実施形態を説明するが、本発明はこれらの実施形態に限定されるものではない。 Hereinafter, although embodiment of this invention is described, this invention is not limited to these embodiment.
<親水性向上剤>
[実施例1〜11]
下記表1に実施例1〜11に係る本発明の親水性向上剤の処方を示す。各実施例に係る親水性向上剤は、酸成分と塩基成分との総量が、親水性向上剤全体中1.0重量%となるように混合した後、蒸留水に溶解させることによって調製したものである。
<Hydrophilicity improver>
[Examples 1 to 11]
Table 1 below shows the formulation of the hydrophilicity improver of the present invention according to Examples 1-11. The hydrophilicity improver according to each example was prepared by mixing so that the total amount of the acid component and the base component was 1.0% by weight in the entire hydrophilicity improver, and then dissolving in distilled water. It is.
なお、各実施例において、酸成分と塩基成分の混合割合は、蒸留水にて希釈した際の水素イオン濃度指数が、それぞれpH6.0、pH7.0、及びpH9.0となるように、各々の割合を適宜変更したものである。 In each example, the mixing ratio of the acid component and the base component was such that the hydrogen ion concentration index when diluted with distilled water was pH 6.0, pH 7.0, and pH 9.0, respectively. This ratio is appropriately changed.
[比較例1]
比較例1に係る処理液として、トリエタノールアミン水溶液(1.0重量%、pH10.2)を用いた。
[Comparative Example 1]
As a treatment liquid according to Comparative Example 1, an aqueous triethanolamine solution (1.0 wt%, pH 10.2) was used.
[比較例2]
比較例2に係る処理液として、前記比較例1に係る処理液を、0.1N塩酸にてpH7.0に調製したものを用いた。
[Comparative Example 2]
The treatment liquid according to Comparative Example 2 was prepared by adjusting the treatment liquid according to Comparative Example 1 to pH 7.0 with 0.1N hydrochloric acid.
<本発明方法および親水処理被膜>
基材のテストピースとして、平坦なガラス板を用い、このガラス板の片面に市販のコーティング剤(AZエレクトロニックマテリアルズ株式会社製 NAX‐120)をスプレーにより塗布した後、自然乾燥(1時間)させることによって、一次被膜を形成した。
<Method of the present invention and hydrophilic treatment film>
A flat glass plate is used as a test piece for the substrate, and a commercially available coating agent (NAX-120 manufactured by AZ Electronic Materials Co., Ltd.) is applied to one side of the glass plate by spraying and then naturally dried (1 hour). As a result, a primary film was formed.
次いで、実施例1〜11に係る本発明の親水性向上剤、及び比較例1、2に係る処理液を各々含浸させた布を用い、基材の表面に形成された一次被膜を布拭きした。 Next, using the cloth impregnated with the hydrophilicity improver of the present invention according to Examples 1 to 11 and the treatment liquid according to Comparative Examples 1 and 2, the primary film formed on the surface of the substrate was wiped off. .
その後、各基材を水洗し、十分に乾燥させることによって、片面にシリカ被膜が形成された基材を得た。 Thereafter, each substrate was washed with water and sufficiently dried to obtain a substrate having a silica film formed on one side.
基材の片面に形成されたシリカ被膜の接触角を測定した結果を、下記表2に示す。なお、接触角は、平坦な基材表面に形成されたシリカ被膜の表面に蒸留水1μlを滴下し、1秒経過時の水滴の接触角を、接触角測定装置(CAX‐150(協和界面化学株式会社製))にて測定することによって得られた値である。 The results of measuring the contact angle of the silica coating formed on one side of the substrate are shown in Table 2 below. The contact angle was measured by adding 1 μl of distilled water to the surface of the silica coating formed on the surface of the flat substrate, and measuring the contact angle of the water drop after 1 second with a contact angle measuring device (CAX-150 (Kyowa Interface Chemistry). It is a value obtained by measuring in (manufactured by Co., Ltd.).
前記表2に示す結果より、本発明の親水性向上剤にて処理することによって得られた本発明のシリカ被膜は、いずれも20度以下の接触角となる高い親水性を示すことが認められた。 From the results shown in Table 2, it is recognized that the silica coating of the present invention obtained by treating with the hydrophilicity improver of the present invention exhibits high hydrophilicity with a contact angle of 20 degrees or less. It was.
なお、比較例1に係る処理液で処理することによって得られたシリカ被膜についても20度以下の接触角となっているが、比較例1に係る処理液にて処理することによって得られたシリカ被膜は、アルカリによって被膜厚が薄くなり、結果として長期的な防汚効果を維持することができないことが確認されている。 The silica film obtained by treating with the treatment liquid according to Comparative Example 1 also has a contact angle of 20 degrees or less, but the silica obtained by treating with the treatment liquid according to Comparative Example 1 It has been confirmed that the coating has a thin film thickness due to alkali, and as a result cannot maintain a long-term antifouling effect.
一方、塩酸にてpH調整してなる比較例2に係る処理液で処理することによって得られたシリカ被膜は、接触角が40度以上になることが確認された。 On the other hand, it was confirmed that the silica coating obtained by treating with the treatment liquid according to Comparative Example 2 obtained by adjusting pH with hydrochloric acid has a contact angle of 40 degrees or more.
ところで、前記実施例においては、酸成分と塩基成分の混合割合を適宜変更することによって、水素イオン濃度指数を調整しているが、塩酸や水酸化ナトリウムを添加することによって、pHが6〜9の範囲になるようにした場合にあっても、同様の処理方法によって得られた本発明のシリカ被膜につき、いずれも20度以下の接触角となる高い親水性を示すことが確認されている。 By the way, in the said Example, although the hydrogen ion concentration index | exponent is adjusted by changing suitably the mixing ratio of an acid component and a base component, pH is 6-9 by adding hydrochloric acid or sodium hydroxide. Even in such a range, it has been confirmed that the silica coating of the present invention obtained by the same treatment method exhibits high hydrophilicity with a contact angle of 20 degrees or less.
なお、本発明は、その精神又は主要な特徴から逸脱することなく、他のいろいろな形態で実施することができる。そのため、上述の実施形態(実施例)はあらゆる点で単なる例示に過ぎず、限定的に解釈してはならない。本発明の範囲は特許請求の範囲によって示すものであって、明細書本文には何ら拘束されない。更に、特許請求の範囲の均等範囲に属する変形や変更は、すべて本発明の範囲内のものである。 It should be noted that the present invention can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-described embodiments (examples) are merely examples in all respects and should not be interpreted in a limited manner. The scope of the present invention is indicated by the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the equivalent scope of the claims are within the scope of the present invention.
本発明によれば、基材の表面に形成されたポリシラザン由来のシリカ被膜の親水性を向上させることができるため、自動車の車体や、建築物の内外装、トイレ、台所、洗面所、浴槽などの水回り製品、看板、標識、プラスチック製品、ガラス製品等の各種製品、或いはソーラーパネルの表面に対して良好な防汚特性を付与する手段として好適に利用することができる。 According to the present invention, since the hydrophilicity of the polysilazane-derived silica coating formed on the surface of the substrate can be improved, the body of an automobile, the interior / exterior of a building, toilet, kitchen, washroom, bathtub, etc. It can be suitably used as a means for imparting good antifouling properties to various products such as water products, signboards, signs, plastic products, glass products, or the surface of solar panels.
Claims (5)
塩基成分としての窒素化合物と、
酸成分としての有機酸、又は前記有機酸によってN-アシル化されたアミノ酸誘導体と、
を少なくとも含有する水溶液となされてなり、
pH6〜9の水素イオン濃度指数を有してなることを特徴とする親水性向上剤。 A hydrophilicity improver for forming a highly hydrophilic polysilazane-derived silica film on the surface of the substrate,
A nitrogen compound as a base component;
An organic acid as an acid component, or an amino acid derivative N-acylated with the organic acid;
An aqueous solution containing at least
A hydrophilicity improver characterized by having a hydrogen ion concentration index of pH 6-9.
前記塩基成分が、アルカノールアミンである親水性向上剤。 In the hydrophilicity improver according to claim 1,
A hydrophilicity improver wherein the base component is an alkanolamine.
前記酸成分における有機酸の炭素数が8〜18の範囲内である親水性向上剤。 In the hydrophilicity improver according to claim 1 or 2,
The hydrophilicity improving agent whose carbon number of the organic acid in the said acid component exists in the range of 8-18.
前記一次被膜の表面に、本発明の親水性向上剤を塗布する親水化工程と、
を実行することを特徴とする被膜の親水性向上方法。 A primary film forming step of forming a primary film on the surface of the base material by applying a coating agent containing polysilazane on the surface of the base material and drying;
A hydrophilic step of applying the hydrophilicity improver of the present invention to the surface of the primary coating;
A method for improving the hydrophilicity of a film, characterized in that
接触角が20度以下であることを特徴とする親水処理被膜。
A hydrophilic treatment film treated by the hydrophilicity improving method according to claim 4,
A hydrophilic treatment film having a contact angle of 20 degrees or less.
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JPH0931333A (en) * | 1995-07-13 | 1997-02-04 | Tonen Corp | Composition and method for forming siliceous ceramics and ceramic film made thereof |
JP2003327908A (en) * | 2002-05-16 | 2003-11-19 | Clariant (Japan) Kk | Hydrophilicity promoter and hydrophilicity retaining agent for polysilazane-containing coating film |
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JP2003327908A (en) * | 2002-05-16 | 2003-11-19 | Clariant (Japan) Kk | Hydrophilicity promoter and hydrophilicity retaining agent for polysilazane-containing coating film |
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