TWI683865B - 書寫工具用水性墨水組成物 - Google Patents
書寫工具用水性墨水組成物 Download PDFInfo
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- TWI683865B TWI683865B TW104131271A TW104131271A TWI683865B TW I683865 B TWI683865 B TW I683865B TW 104131271 A TW104131271 A TW 104131271A TW 104131271 A TW104131271 A TW 104131271A TW I683865 B TWI683865 B TW I683865B
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- BQHRKYUXVHKLLZ-UHFFFAOYSA-M sodium 7-amino-2-[[4-[(4-aminophenyl)diazenyl]-2-methoxy-5-methylphenyl]diazenyl]-3-sulfonaphthalen-1-olate Chemical compound [Na+].COc1cc(N=Nc2ccc(N)cc2)c(C)cc1N=Nc1c(O)c2cc(N)ccc2cc1S([O-])(=O)=O BQHRKYUXVHKLLZ-UHFFFAOYSA-M 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 1
- 235000019254 sodium formate Nutrition 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- DJDYMAHXZBQZKH-UHFFFAOYSA-M sodium;1-amino-4-(cyclohexylamino)-9,10-dioxoanthracene-2-sulfonate Chemical compound [Na+].C1=2C(=O)C3=CC=CC=C3C(=O)C=2C(N)=C(S([O-])(=O)=O)C=C1NC1CCCCC1 DJDYMAHXZBQZKH-UHFFFAOYSA-M 0.000 description 1
- XNRNJIIJLOFJEK-UHFFFAOYSA-N sodium;1-oxidopyridine-2-thione Chemical compound [Na+].[O-]N1C=CC=CC1=S XNRNJIIJLOFJEK-UHFFFAOYSA-N 0.000 description 1
- QVCCZAZTGUCIHD-UHFFFAOYSA-M sodium;2-[(4-amino-3-bromo-9,10-dioxoanthracen-1-yl)amino]-5-methylbenzenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC(C)=CC=C1NC1=CC(Br)=C(N)C2=C1C(=O)C1=CC=CC=C1C2=O QVCCZAZTGUCIHD-UHFFFAOYSA-M 0.000 description 1
- SHBDDIJUSNNBLQ-UHFFFAOYSA-M sodium;3-[[4-[(2-chlorophenyl)-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]-n-ethylanilino]methyl]benzenesulfonate Chemical compound [Na+].C=1C=C(C(=C2C=CC(C=C2)=[N+](CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C=2C(=CC=CC=2)Cl)C=CC=1N(CC)CC1=CC=CC(S([O-])(=O)=O)=C1 SHBDDIJUSNNBLQ-UHFFFAOYSA-M 0.000 description 1
- RWVGQQGBQSJDQV-UHFFFAOYSA-M sodium;3-[[4-[(e)-[4-(4-ethoxyanilino)phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]-2-methylcyclohexa-2,5-dien-1-ylidene]methyl]-n-ethyl-3-methylanilino]methyl]benzenesulfonate Chemical compound [Na+].C1=CC(OCC)=CC=C1NC1=CC=C(C(=C2C(=CC(C=C2)=[N+](CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C)C=2C(=CC(=CC=2)N(CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C)C=C1 RWVGQQGBQSJDQV-UHFFFAOYSA-M 0.000 description 1
- FJBHGWADYLMEJG-UHFFFAOYSA-M sodium;3-[[4-[[4-(diethylamino)phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]-n-ethylanilino]methyl]benzenesulfonate Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C=CC(=CC=1)N(CC)CC=1C=C(C=CC=1)S([O-])(=O)=O)=C(C=C1)C=CC1=[N+](CC)CC1=CC=CC(S([O-])(=O)=O)=C1 FJBHGWADYLMEJG-UHFFFAOYSA-M 0.000 description 1
- CKMPIIPZKJISCU-UHFFFAOYSA-M sodium;4,8-diamino-1,5-dihydroxy-9,10-dioxoanthracene-2-sulfonate Chemical compound [Na+].O=C1C2=C(N)C=C(S([O-])(=O)=O)C(O)=C2C(=O)C2=C1C(O)=CC=C2N CKMPIIPZKJISCU-UHFFFAOYSA-M 0.000 description 1
- NTOOJLUHUFUGQI-UHFFFAOYSA-M sodium;4-(4-acetamidoanilino)-1-amino-9,10-dioxoanthracene-2-sulfonate Chemical compound [Na+].C1=CC(NC(=O)C)=CC=C1NC1=CC(S([O-])(=O)=O)=C(N)C2=C1C(=O)C1=CC=CC=C1C2=O NTOOJLUHUFUGQI-UHFFFAOYSA-M 0.000 description 1
- WYLWMAWLDZBLRN-UHFFFAOYSA-M sodium;4-[3-methyl-4-[[4-methyl-3-(phenylsulfamoyl)phenyl]diazenyl]-5-oxo-4h-pyrazol-1-yl]benzenesulfonate Chemical compound [Na+].CC1=NN(C=2C=CC(=CC=2)S([O-])(=O)=O)C(=O)C1N=NC(C=1)=CC=C(C)C=1S(=O)(=O)NC1=CC=CC=C1 WYLWMAWLDZBLRN-UHFFFAOYSA-M 0.000 description 1
- KQRZWHVIXVADGL-UHFFFAOYSA-M sodium;4-[[4-(dibenzylamino)phenyl]-(4-dibenzylazaniumylidenecyclohexa-2,5-dien-1-ylidene)methyl]benzene-1,3-disulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC(S(=O)(=O)[O-])=CC=C1C(C=1C=CC(=CC=1)N(CC=1C=CC=CC=1)CC=1C=CC=CC=1)=C(C=C1)C=CC1=[N+](CC=1C=CC=CC=1)CC1=CC=CC=C1 KQRZWHVIXVADGL-UHFFFAOYSA-M 0.000 description 1
- UWGCNDBLFSEBDW-UHFFFAOYSA-M sodium;4-[[4-(diethylamino)phenyl]-(4-diethylazaniumylidenecyclohexa-2,5-dien-1-ylidene)methyl]naphthalene-2,7-disulfonate Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C2=CC=C(C=C2C=C(C=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 UWGCNDBLFSEBDW-UHFFFAOYSA-M 0.000 description 1
- FTUYQIPAPWPHNC-UHFFFAOYSA-M sodium;4-[[4-[benzyl(ethyl)amino]phenyl]-[4-[benzyl(ethyl)azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]benzene-1,3-disulfonate Chemical compound [Na+].C=1C=C(C(=C2C=CC(C=C2)=[N+](CC)CC=2C=CC=CC=2)C=2C(=CC(=CC=2)S([O-])(=O)=O)S([O-])(=O)=O)C=CC=1N(CC)CC1=CC=CC=C1 FTUYQIPAPWPHNC-UHFFFAOYSA-M 0.000 description 1
- CRWJEUDFKNYSBX-UHFFFAOYSA-N sodium;hypobromite Chemical compound [Na+].Br[O-] CRWJEUDFKNYSBX-UHFFFAOYSA-N 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 235000012756 tartrazine Nutrition 0.000 description 1
- UJMBCXLDXJUMFB-GLCFPVLVSA-K tartrazine Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)C1=NN(C=2C=CC(=CC=2)S([O-])(=O)=O)C(=O)C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 UJMBCXLDXJUMFB-GLCFPVLVSA-K 0.000 description 1
- 239000004149 tartrazine Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- QTTDXDAWQMDLOF-UHFFFAOYSA-J tetrasodium 3-[[4-[[4-[(6-amino-1-hydroxy-3-sulfonatonaphthalen-2-yl)diazenyl]-6-sulfonatonaphthalen-1-yl]diazenyl]naphthalen-1-yl]diazenyl]naphthalene-1,5-disulfonate Chemical compound [Na+].[Na+].[Na+].[Na+].Nc1ccc2c(O)c(N=Nc3ccc(N=Nc4ccc(N=Nc5cc(c6cccc(c6c5)S([O-])(=O)=O)S([O-])(=O)=O)c5ccccc45)c4ccc(cc34)S([O-])(=O)=O)c(cc2c1)S([O-])(=O)=O QTTDXDAWQMDLOF-UHFFFAOYSA-J 0.000 description 1
- XRFRTDKENRGSSX-UHFFFAOYSA-J tetrasodium;3-[[4-[[4-[(4,8-disulfonatonaphthalen-2-yl)diazenyl]-3-methylphenyl]carbamoylamino]-2-methylphenyl]diazenyl]naphthalene-1,5-disulfonate Chemical compound [Na+].[Na+].[Na+].[Na+].C1=CC=C(S([O-])(=O)=O)C2=CC(N=NC3=CC=C(NC(=O)NC=4C=C(C)C(N=NC=5C=C6C(=CC=CC6=C(C=5)S([O-])(=O)=O)S([O-])(=O)=O)=CC=4)C=C3C)=CC(S([O-])(=O)=O)=C21 XRFRTDKENRGSSX-UHFFFAOYSA-J 0.000 description 1
- YODZTKMDCQEPHD-UHFFFAOYSA-N thiodiglycol Chemical compound OCCSCCO YODZTKMDCQEPHD-UHFFFAOYSA-N 0.000 description 1
- JADVWWSKYZXRGX-UHFFFAOYSA-M thioflavine T Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1C1=[N+](C)C2=CC=C(C)C=C2S1 JADVWWSKYZXRGX-UHFFFAOYSA-M 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XOSXWYQMOYSSKB-UHFFFAOYSA-L water blue Chemical compound [Na+].[Na+].[O-]S(=O)(=O)C1=C(N)C(C)=CC(C(=C2C=CC(C=C2)=NC=2C=CC(=CC=2)S([O-])(=O)=O)C=2C=CC(NC=3C=CC(=CC=3)S(O)(=O)=O)=CC=2)=C1 XOSXWYQMOYSSKB-UHFFFAOYSA-L 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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Abstract
本發明提供一種書寫工具用水性墨水組成物,其可抑制含氧化纖維素之水性墨水組成物之經時黏度分佈之不均一性(黏度上下差),且經時之黏度分佈安定性優異,同時描線品質優異。
作為上述書寫工具用水性墨水組成物,舉例為具有下列特徵者:至少含有0.05~1.5質量%之氧化纖維素及0.005~1質量%之琥珀醯聚糖(succinoglycan)。
Description
本發明係關於含有氧化纖維素之書寫工具用水性墨水組成物。
過去以來,書寫工具用墨水組成物中所用之顯示剪切減黏性之增黏已知有天然系、化學修飾天然物之半合成系、由石油化學原料化學合成之合成系者。
該等中之源自纖維素之天然增黏劑,已知有纖維素本身經物理性微細加工者,已知有粉末纖維素、發酵纖維素(細菌纖維素)、氧化纖維素等。
作為使用該等纖維素之水性墨水組成物,已知有例如1)特徵為含有醚化度1.5以上之羧甲基纖維素(CMC)之鹼金屬鹽或銨鹽之水性墨水組成物(例如參考專利文獻1),2)特徵為至少由水、發酵纖維素所成之水性原子筆用墨水組成物(例如參考專利文獻2),3)特徵為含有特定物性之氧化纖維素(纖維素纖維)與著色劑及隱蔽劑之至少一者及水之水性墨水組成物(例如參考專利文獻3)等。
然而,上述專利文獻1之CMC之鹼金屬鹽或
銨鹽並非黏性高、顏料等之經時分散安定性良好者。且,上述專利文獻2之水性原子筆用墨水組成物中之發酵纖維素係由纖細纖維性粒子所成者,藉由於筆尖形成柔軟之樹脂皮膜(纖維素纖維之皮膜)而提高速乾性能者,墨水黏度之調整等係併用以往之剪切減黏性賦予劑(黃原膠)者,並非可提高顏料等之經時分散安定性者。
上述專利文獻3之含有氧化纖維素之水性墨水組成物係比以往之增黏‧凝膠化劑優異者,不受氣溫或著色劑、隱蔽劑之特性等之左右,著色劑或隱蔽劑之分散性優異,且防止保存時之沉降分離者,但具有經時上易發生黏度分佈之不均一性(黏度上下差)之性質,現狀為尚有無法達成充分之經時黏度分佈安定性,進而有無法達成經時之分散安定性方面之課題。
另一方面,作為增黏劑使用琥珀醯聚糖之書寫工具用水性墨水組成物,已知有例如含有作為必須成分之著色劑、琥珀醯聚糖及水及水溶性有機溶劑,且含有水占50重量%以上之水性介質之書寫工具用水性墨水組成物(例如參考專利文獻4)。
然而,該專利文獻4之使用琥珀醯聚糖之水性墨水組成物雖展現粒子之分散安定性方面優異之性質,但關於與氧化纖維素併用,因併用而不發生經時之黏度分佈之均一性(黏度上下差)之方面則全然無記載或教示等。
專利文獻1:日本特開昭62-124170號公報(申請專利範圍、實施例等)
專利文獻2:日本特開2013-91730號公報(申請專利範圍、實施例等)
專利文獻3:日本特開2013-181167號公報(申請專利範圍、實施例等)
專利文獻4:日本特開平6-88050號公報(申請專利範圍、實施例等)
本發明係鑑於上述先前技術之課題及現狀,欲消除該等者,目的在於提供一種書寫工具用水性墨水組成物,其可抑制使用氧化纖維素時之書寫工具用水性墨水組成物之課題之經時黏度分佈之不均一性(黏度上下差),且經時之黏度分佈安定性優異,同時描線品質優異。
本發明人等鑑於上述以往課題等,進行積極研究之結果,發現藉由同時含有氧化纖維素與各特定量之特定多糖類,可獲得上述目的之書寫工具用水性墨水組成物,因而至於完成本發明。
亦即,本發明存在有如下之(1)~(3)。
(1)一種書寫工具用水性墨水組成物,其特徵係至少
含有0.05~1.5質量%之氧化纖維素及0.005~1質量%之琥珀醯聚糖(succinoglycan)。
(2)如上述(1)之書寫工具用水性墨水組成物,其中前述氧化纖維素與前述琥珀醯聚糖之質量比率為30:1~1:2。
(3)一種書寫工具,其特徵係搭載如上述(1)或(2)之書寫工具用水性墨水組成物。
依據本發明,提供一種可抑制含氧化纖維素之水性墨水組成物之經時黏度分佈之不均一性(黏度上下差),且經時之黏度分佈安定性優異,同時描線品質優異之書寫工具用水性墨水組成物。
以下,詳細說明本發明之實施形態。
本發明之書寫工具用水性墨水組成物之特徵係至少含有0.05~1.5質量%之氧化纖維素及0.005~1質量%之琥珀醯聚糖者。
本發明所用之氧化纖維素只要為具有纖維素I型結晶構造,並且構成纖維素[(C6H10O5)n:多數之β葡萄糖分子係藉由糖苷鍵聚合為直鏈狀之天然高分子]之β葡萄糖之
羥基(-OH基)之一部分以醛基(-CHO)及羧基(-COOH基)之至少一個官能基改質者,即無特別限定,例如可舉例為上述β葡萄糖之至少C6位之羥基(-OH基)被氧化而改質為醛基(-CHO)及羧基(-COOH基)者。
本發明所用之氧化纖維素係將具有I型結晶構造之源自天然物之纖維素固體原料表面氧化,並微細化至奈米尺寸之纖維。一般,成為原料之源自天然物之纖維素由於幾乎無例外地係採取稱為微纖絲(microfibril)之奈米纖維經多束化而成之高次構造,故無法直接容易地微細化至奈米尺寸使分散。本發明之氧化纖維素係使纖維素纖維之羥基之一部分氧化而導入醛基及羧基,使微纖絲間之成為強力凝集力之原動力之表面間氫鍵減弱,而進行分散處理並微細化至奈米尺寸者。
本發明中,藉由使用上述物性之氧化纖維素與後述之特定羧甲基纖維素或其鹽,可發揮本發明效果者,較好期望氧化纖維素之數平均纖維徑為2~150nm者。
基於分散安定性之方面,更好期望數平均纖維徑為3~80nm者。藉由使該氧化纖維素之數平均纖維徑為2nm以上,可發揮作為分散介質之功能,相反地,藉由使數平均纖維徑為150nm以下,可更提高纖維素纖維本身之分散安定性。
本發明中,上述數平均纖維徑可例如如下述般測定。亦即,將水添加於纖維素纖維中使予以稀釋之試料分散處
理,澆注於親水化處理過之碳膜被覆格柵上,以透過型電子顯微鏡(TEM)觀察其,自所得圖像,可測定算出數平均纖維徑。
又,所謂構成上述特定之纖維素纖維之纖維素具有源自天然物之I型結晶構造可根據例如由廣角X射線繞射像測定獲得之繞射輪廓中,於2θ=14~17°附近及2θ=22~23°附近之2個位置具有典型波峰而鑑定。
本發明所用之氧化纖維素之製造可藉由至少3個下述步驟而獲得:例如將天然纖維素作為原料,於水中將N-氧基化合物作為氧化觸媒,藉由作用共氧化劑而使該天然纖維素氧化獲得反應物纖維之氧化反應步驟,去除雜質而獲得含浸水之反應物纖維之純化步驟,以及使含浸水之反應物纖維分散於溶劑中之分散步驟。
上述氧化反應步驟係將天然纖維素分散於水中調製分散液。此處,天然纖維素意指自植物、動物、細菌產生凝膠等纖維素之生合成系單離之純化纖維素。更具體而言,係將針葉樹系紙漿、闊葉樹系紙漿、如棉短絨(cotton linter)或棉絨(cotton lint)之棉系紙漿、麥稈紙漿或蔗渣紙漿等非木材系紙漿、BC、自海鞘單離之纖維素、自海草單離之纖維素等,但不限定於該等。較好為天然纖維素,若施以打漿(beating)等之提高表面積之處理,則可提高反應效率,且可提高生產性。再者,作為天然纖維素,若使用單離、純化後以從未乾下保存者,則由於微纖絲之集束體為易膨潤狀態,還是可提高反應效率,可使微
細化處理後之數平均纖維徑減小,故較佳。
反應中之天然纖維素之分散介質為水,反應水溶液中之天然纖維素濃度只要為可使試藥充分擴散之濃度則可為任意,但通常相對於反應水溶液之重量約為5%以下。
又,可作為纖維素之氧化觸媒使用之N-氧基化合物有眾多報告(「Cellulose」Vol.10,2003年,第335~341頁中之由I.Shibata及A.Isogai提出之標題「使用TEMPO衍生物之纖維素觸媒氧化:氧化生成物之HPSEC及NMR分析」),但尤其是TEMPO(2,2,6,6-四甲基-1-哌啶-N-氧基)、4-乙醯胺-TEMPO、4-羧基-TEMPO及4-磷醯氧基-TEMPO就水中常溫之反應速度而言係較好。該等N-氧基化合物之添加為觸媒量即以足夠,較好為0.1~4mmol/l,更好為0.2~2mmol/l之範圍添加於反應水溶液中。
作為共氧化劑,次鹵酸或其鹽、亞鹵酸或其鹽、過鹵酸或其鹽、過氧化氫及過有機酸等可使用於本發明,但較好為鹼金屬次鹵酸鹽例如次氯酸鈉或次溴酸鈉。使用次氯酸鈉時,就反應速度而言,較好在溴化鹼金屬例如溴化鈉存在下進行反應。該溴化鹼金屬之添加量相對於N-氧基化合物約為1~40倍莫耳量,較好為約10~20倍莫耳量。一般共氧化劑之添加量較好在相對於天然纖維素1g為約0.5~8mmol之範圍內選擇,反應約5~120分鐘,最長240分鐘內即可完成。
反應水溶液之pH較好維持在約8~11之範圍。水溶
液之溫度在約4~40℃內可任意,反應可在室溫進行,並無需要特別的溫度控制。
純化步驟中,將未反應之次氯酸或各種副產物等反應漿料中所含之反應物纖維與水以外之化合物除去至系外,但反應物纖維通常於該階段由於並非零散地分散至奈米纖維單位,故藉由通常之純化法,亦即重複水洗及過濾,即可作成高純度(99質量%以上)之反應物纖維與水之分散體。該純化步驟中之純化方法只要為可利用如離心脫水之方法(例如連續式傾析器)之可達成上述目的之裝置,則任何裝置均可利用。
如此獲得之反應物纖維之水分散體係於扭絞狀態作為固體成分(纖維素)濃度計在於大約10質量%~50質量%之範圍內。於隨後之步驟,朝奈米纖維分散時,若比50質量%為高之固體成分濃度,則由於分散時需要極高之能量故不佳。
再者,本發明中,藉由將於上述純化步驟所得之含浸水之反應物纖維(水分散體)分散於溶劑中並施以分散處理,可獲得氧化纖維素之分散體,使該分散體乾燥可作成所用之氧化纖維素。
此處,作為分散介質之溶劑通常較佳為水,但水以外亦可依據目的使用於水中可溶之醇類(甲醇、乙醇、異丙醇、異丁醇、第二丁醇、第三丁醇、甲基溶纖素、乙基溶纖素、乙二醇、丙三醇等)、醚類(乙二醇二甲醚、1,4-二噁烷、四氫呋喃等)、酮類(丙酮、甲基乙基酮)或N,N-二
甲基甲醯胺、N,N-二甲基乙醯胺、二甲基亞碸等。且,亦可較佳地使用該等之混合物。再者,上述之反應物纖維之分散體藉由溶劑稀釋、分散時,逐次少量添加溶劑而分散而嘗試階段分散時,可有效率地獲得奈米纖維等級之纖維之分散體之情況。基於操作上之問題,可使分散步驟後之狀態成為具有黏性之分散液或凝膠狀之狀態之方式選擇分散條件。所用之氧化纖維素亦可為上述氧化纖維素之分散體。
又,本發明可使用之氧化纖維素不限定於上述製造法等,若為能使上述纖維素之羥基(-OH基)之一部分以醛基(-CHO)及羧基(-COOH基)之至少一個官能基改質者,則其製造法並無特別限定。
本發明之書寫工具用水性墨水組成物之特徵係至少含有0.05~1.5質量%之氧化纖維素及0.005~1質量%之琥珀醯聚糖者,可供於例如作為水性原子筆等之書寫工具用墨水組成物使用。
本發明中,上述氧化纖維素之含量(固體成分量)相對於書寫工具用水性墨水組成物中(全量),為0.05~1.5質量%(以下簡稱為「%」),較佳宜為0.1~1.0%。
該氧化纖維素之含量未達0.05%時,無法獲得充分之增黏作用,有發生顏料等固體成分之經時沉降之情況,另一方面,超過1.5%時,由於黏度變高,故有發生書寫描
線之線斷現象或墨水噴出不良之情況而不佳。
作為本發明之增黏劑使用之琥珀醯聚糖係源自微生物之多糖類之一種,除了自乳糖及葡萄糖衍生之糖單位以外,亦含有琥珀酸及丙酮酸及作為任意成分之乙酸或該等之酸之鹽所衍生之單位者。
作為可使用之琥珀醯聚糖,舉例為例如市售之REOZEN SH(RHODIA公司製)。又,本發明中所謂「琥珀醯聚糖」係亦包含純化物及改質物者。
該等琥珀醯聚糖之含量相對於水性墨水全量,為0.005%~1%,較佳宜為0.01%~1%。
該含量未達0.005%時,本發明之效果發揮不充分,另一方面,超過1%時,阻礙流變學特性而不佳。
本發明中,基於更提高本發明效果之方面而言,較好上述氧化纖維素與上述琥珀醯聚糖之質量比率宜為30:1~1:2,更佳宜為25:1~1:2。
本發明之書寫工具用水性墨水組成物中,除了上述氧化纖維素、琥珀醯聚糖以外,亦至少含有著色劑、水溶性溶劑。
作為可使用之著色劑,舉例有顏料及/或水溶性染料。顏料種類並未特別限制,可使用以往水性原子筆等書寫工具用中所慣用之無機及有機系顏料中之任意者。
作為無機系顏料,舉例有例如碳黑或金屬粉等。
又,作為有機系顏料,舉例有例如偶氮色澱、不溶性
偶氮顏料、螯合劑偶氮顏料、酞青顏料、苝及芘酮顏料、蒽醌顏料、喹吖啶酮顏料、染料色澱、硝基顏料、亞硝基顏料等。具體而言,可使用酞青藍(C.I.74160)、酞青綠(C.I.74260)、漢薩黃(Hansa yellow)3G(C.I.11670)、雙偶氮黃(disazo yellow)GR(C.I.21100)、永久紅4R(C.I.12335)、亮洋紅6B(C.I.15850)、喹吖啶酮紅(C.I.46500)等。
且,亦可使用由苯乙烯或丙烯酸樹脂之粒子構成之塑膠顏料。再者,內部有空隙之中空樹脂粒子亦可使用作為白色顏料,或亦可使用以顯色性、分散性優異之後述檢性染料染色之樹脂粒子(擬似顏料)等。
作為水溶性染料,亦可使用直接染料、酸性染料、食用染料、鹼性染料之任一種。
作為直接染料,舉例有例如C.I.直接黑17、C.I.直接黑19、C.I.直接黑22、C.I.直接黑32、C.I.直接黑38、C.I.直接黑51、C.I.直接黑71、C.I.直接黃4、C.I.直接黃26、C.I.直接黃44、C.I.直接黃50、C.I.直接紅1、C.I.直接紅4、C.I.直接紅23、C.I.直接紅31、C.I.直接紅37、C.I.直接紅39、C.I.直接紅75、C.I.直接紅80、C.I.直接紅81、C.I.直接紅83、C.I.直接紅225、C.I.直接紅226、C.I.直接紅227、C.I.直接藍1、C.I.直接藍15、C.I.直接藍71、C.I.直接藍86、C.I.直接藍106、C.I.直接藍119等。
作為酸性染料,舉例有例如C.I.酸性黑1、C.I.酸性
黑2、C.I.酸性黑24、C.I.酸性黑26、C.I.酸性黑31、C.I.酸性黑52、C.I.酸性黑107、C.I.酸性黑109、C.I.酸性黑110、C.I.酸性黑119、C.I.酸性黑154、C.I.酸性黃7、C.I.酸性黃17、C.I.酸性黃19、C.I.酸性黃23、C.I.酸性黃25、C.I.酸性黃29、C.I.酸性黃38、C.I.酸性黃42、C.I.酸性黃49、C.I.酸性黃61、C.I.酸性黃72、C.I.酸性黃78、C.I.酸性黃110、C.I.酸性黃127、C.I.酸性黃135、C.I.酸性黃141、C.I.酸性黃142、C.I.酸性紅8、C.I.酸性紅9、C.I.酸性紅14、C.I.酸性紅18、C.I.酸性紅26、C.I.酸性紅27、C.I.酸性紅35、C.I.酸性紅37、C.I.酸性紅51、C.I.酸性紅52、C.I.酸性紅57、C.I.酸性紅82、C.I.酸性紅87、C.I.酸性紅92、C.I.酸性紅94、C.I.酸性紅115、C.I.酸性紅129、C.I.酸性紅131、C.I.酸性紅186、C.I.酸性紅249、C.I.酸性紅254、C.I.酸性紅265、C.I.酸性紅276、C.I.酸性紫18、C.I.酸性紫17、C.I.酸性藍1、C.I.酸性藍7、C.I.酸性藍9、C.I.酸性藍22、C.I.酸性藍23、C.I.酸性藍25、C.I.酸性藍40、C.I.酸性藍41、C.I.酸性藍43、C.I.酸性藍62、C.I.酸性藍78、C.I.酸性藍83、C.I.酸性藍90、C.I.酸性藍93、C.I.酸性藍103、C.I.酸性藍112、C.I.酸性藍113、C.I.酸性藍158、C.I.酸性綠3、C.I.酸性綠9、C.I.酸性綠16、C.I.酸性綠25、C.I.酸性綠27等。
作為食用染料,其大部分包含於直接染料或酸性染料中,但作為未被包含者之一例舉例為C.I.食品黃3。
作為鹼性染料,舉例為例如C.I.鹼性黃1、C.I.鹼性
黃2、C.I.鹼性黃21、C.I.鹼性橙2、C.I.鹼性橙14、C.I.鹼性橙32、C.I.鹼性紅1、C.I.鹼性紅2、C.I.鹼性紅9、C.I.鹼性紅14、C.I.鹼性棕12、C.I.鹼性黑2、C.I.鹼性黑8等。
又,作為由鹼性染料染色之樹脂粒子,舉例有丙烯腈系共聚物之樹脂粒子以鹼性螢光染料染色之螢光顏料等。作為具體之商品名,舉例有SHINLOIHI COLOR SF系列(SHINLOIHI股份有限公司)、NKW及NKP系列(日本螢光化學股份有限公司)等。
該等著色劑可個別單獨使用,亦可組合2種以上,於書寫工具用水性墨水組成物全量中之含量通常為0.5~30%,較佳為1~15%之範圍。
該著色劑之含量未達0.5%時,著色變弱,有使筆跡色相變模糊之情況,另一方面含有超過30%時,有產生書寫不良之情況而不佳。
作為可使用之水溶性溶劑,例如乙二醇、二乙二醇、三乙二醇、丙二醇、聚乙二醇、3-丁二醇、硫代二乙二醇、丙三醇等之二醇類、或乙二醇單甲醚、二乙二醇單甲醚,可單獨或混合使用。該水溶性溶劑之含量於書寫工具用水性墨水組成物全量中宜為5~40%。
本發明之書寫工具用水性墨水組成物中,除了上述氧化纖維素、琥珀醯聚糖、著色劑、水溶性溶劑以外,作為其餘部分之溶劑為水(自來水、純化水、蒸餾水、離子交換水、純水等)以外,在不損及本發明效果之
範圍內,可適宜含有分散劑、潤滑劑、pH調整劑、防鏽劑、防腐劑或防菌劑等。
作為著色劑使用顏料時,較佳使用分散劑。該分散劑係吸附於顏料表面,提高與水之親和性,使顏料於水中發揮安定地分散之作用者,可使用非離子、陰離子界面活性劑或水溶性樹脂。較佳使用水溶性高分子。
作為潤滑劑,舉例有亦可於顏料之表面處理劑中使用之多元醇之脂肪酸酯、糖之高級脂肪酸酯、聚氧伸烷基高級脂肪酸酯、烷基磷酸酯等之非離子系、或高級脂肪酸醯胺之烷基磺酸鹽、烷基烯丙基磺酸鹽等之陰離子系、聚烷二醇之衍生物或氟系界面活性劑、聚醚改質聚矽氧等。
作為pH調整劑,舉例有氨、尿素、單乙醇胺、二乙醇胺、三乙醇胺或三聚磷酸鈉、碳酸鈉等之碳酸或磷酸之鹼金屬鹽、氫氧化鈉等之鹼金屬之水合物等。又,作為防鏽劑,舉例有苯并三唑、甲苯三唑、二環己基銨硝酸鹽、皂苷類等,作為防腐劑或防菌劑,舉例有酚、吡硫鈉(omadine sodium)、苯甲酸鈉、苯并咪唑系化合物等。
本發明之書寫工具用水性墨水組成物可藉由根據書寫工具用(原子筆用、標示筆用)墨水之用途適宜組合上述氧化纖維素、琥珀醯聚糖、著色劑、水溶性溶劑、其他各成分,並藉由均質混合機、均質機或分散機等攪拌機攪拌混合,進而根據需要藉由過濾或離心分離除去墨水組成物中之粗大粒子等而調製書寫工具用水性墨水組成
物。
於水性原子筆用時,可藉由將該書寫工具用水性墨水組成物填充至具備有直徑為0.18~2.0mm之球之水性原子筆體而製作。
作為所用之水性原子筆體,只要具備直徑在上述範圍之球者則無特別限定,尤其,期望為將上述水性墨水組成物填充至聚丙烯管之墨水收容管中,並加工成前端具有不鏽鋼筆尖(球為超鋼合金)之再填充之水性原子筆者。
本發明之書寫工具用水性墨水組成物之製造方法,可與其他水性墨水組成物之製造方法相比較未特別變化地製造。
亦即,本發明之書寫工具用水性墨水組成物係藉由將含上述氧化纖維素、琥珀醯聚糖之各成分以混合機等,進而使用例如可施加強力剪切之珠粒研磨機、均質混合機、均質機、高壓均質機、超音波均質機、高壓濕式無介質微粒化裝置等混合攪拌,將攪拌條件設定於較佳條件等,可製造觸變性墨水(例如凝膠墨水水性原子筆用墨水)。
又,本發明之書寫工具用水性墨水組成物之pH(25℃),基於使用性、安全性、墨水本身之安全性、與墨水收容體之相符性之方面而言,較佳藉由pH調整劑等調整至5~10,更佳宜為6~9.5。
本發明之書寫工具用水性墨水組成物係搭載於具備原子筆尖、纖維筆尖、毛氈筆尖、塑膠筆尖等筆尖之原子筆、標示筆等之書寫工具。
作為本發明之原子筆,舉例為將上述組成之書寫工具用水性墨水組成物收容於原子筆用墨水收容體(再填充)中,並且將與該墨水收容體內收容之水性墨水組成物無相溶性,且相對於該水性墨水組成物,比重較小之物質例如聚丁烯、聚矽氧油、礦油等作為墨水追隨體而收容者。
又,原子筆、標示筆之構造並未特別限定,可為例如將軸筒本身作為墨水收容體並於該軸筒內填充上述構成之書寫工具用水性墨水組成物之所具備集合體構造(墨水保持機構)之直液式原子筆、標示筆即可。
此種構成之本發明之書寫工具用水性墨水組成物中,所用之氧化纖維素於書寫工具用水性墨水組成物中即使為0.05~1.5%之低黏度亦顯示高黏性,且由於對纖維素顯示固有之高觸變指數,故作為書寫工具用水性墨水組成物之增黏‧凝膠化劑,而以比以往之微細纖維素或黃原膠更少量即可發揮流變學控制效果,並且於因使用該氧化纖維素時之經時黏度分佈之不均一性(黏度上下差),藉由於墨水組成物中含有0.005~1%之琥珀醯聚糖而抑制,可獲得經時黏度分佈安定性優異,並且描線品質優異之書寫工具用水性墨水組成物。
然後,藉由實施例及比較例更詳細說明本發明,但本發明不限定於下述實施例等。
使用為下述物性之氧化纖維素,藉由示於下述表1之調配組成,具體而言,藉由琥珀醯聚糖、著色劑等調配組成使各書寫工具用水性墨水組成物之特定量使用高壓濕式無介質微粒化裝置(吉田機械興業公司製,NanoVater)適宜變更攪拌條件(剪切力、壓力、攪拌時間)以濕式法混合攪拌,並藉由10μm之袋過濾器過濾而調製。各書寫工具用水性墨水組成物之室溫(25℃)下之pH以pH測定計(HORIBA公司製)測定時,在於7.9~8.2之範圍內。
針對上述實施例1~6及比較例1~4所得之書寫工具用水性墨水組成物以下述方法測定黏度值。
黏度值測定時,使用於玻璃瓶2.5x2.5x5cm[墨水填充高度(自玻璃瓶內之底部至填充有墨水之上面高度):4cm]中於室溫下保管1個月後,使用針筒取得玻璃瓶上部附近(距墨水填充高度上部0.5cm附近)之墨水,且與上述同樣取得玻璃瓶下部附近(距墨水填充高度底部0.5cm附近)之墨水,以EMD型黏度計(東京計器公司製)測定25℃時之剪切速度38.3s-1之黏度值。又,本發明中,作為良好之黏度分佈,於上述條件下,較佳為黏度之上下比(上/下)為在於0.95~1.6之範圍者,最佳為在於0.95~1.3之範圍者。藉以下判定(評價)基準進行評價。
判定(評價)基準:
○:黏度之上下比為0.95以上~1.3以下
△:黏度之上下比超過1.3且1.6以下
×:黏度之上下比未達0.95或超過1.6
其次,針對上述實施例1~6及比較例1~4所得之書寫工具用水性墨水組成物,藉由下述方法製作水性原子筆,以下述評價方法進行描線品質(拉絲性)之評價。
該等結果示於下述表1。
以乾燥重量相當於2g之未乾燥亞硫酸漂白針葉樹紙漿(主要由超過1000nm之纖維徑的纖維所成)、0.025g之TEMPO及0.25g溴化鈉分散於水150ml中後,將13重量%次氯酸鈉水溶液以對於1g紙漿次氯酸鈉之量成為2.5mmol之方式添加次氯酸鈉並開始反應,反應中滴加0.5M氫氧化鈉水溶液將pH保持在10.5。於pH不再變化之時點視為反應結束,反應物以玻璃過濾器過濾後,以充分量之水進行水洗、過濾並重複5次,獲得固體成分量25質量%之含浸水之反應物纖維。
接著,於該反應物纖維中添加水,作成2質量%漿液,以旋轉刀式混合機進行約5分鐘之處理。由於隨著處理漿液黏度顯著上升,故逐次添加少量水直至固體成分濃度成為0.15質量%,接續混合機之分散處理。對於如此所得之纖維素濃度為0.15質量%之氧化纖維素之分散體藉由離心分離去除浮游物後,以水進行濃度調製,獲得纖維素濃度為0.1質量%之透明且稍黏稠之氧化纖維素之分散體。使用使該分散體乾燥而得之氧化纖維素。又,表1之
各實施例等所示之氧化纖維素係將上述製造者以各實施例等之固體成分濃度表示者。
上述所得之氧化纖維素之數平均纖維徑係藉由下述方法予以確認、測定。
氧化纖維素之數平均纖維徑係如下測定。
亦即,使用均質混合機將於氧化纖維素中添加水稀釋而成之試料於12000rpm分散15分鐘後,澆注於經親水化處理過之碳膜被覆格柵上,以透過型電子顯微鏡(TEM)觀察其,自所得圖像測定算出數平均纖維徑。其結果,數平均纖維徑約140nm。
所用之氧化纖維素具有I型結晶構造之確認係如下述般進行。
亦即,由廣角X射線繞射像測定獲得之繞射輪廓中,於2θ=14~17°附近及2θ=22~23°附近之2個位置具有典型波峰而確認具有I型結晶構造。
使用上述獲得之各墨水組成物製作水性原子筆。具體而言係使用原子筆[三菱鉛筆股份有限公司製,商品名:SIGNO UM-100]之軸,將上述各水性墨水充填至由內徑
4.0mm、長度113mm之聚丙烯製墨水收容管與不鏽鋼製筆尖(超硬合金球,球徑0.7mm)及連結該收容管與該筆尖之接頭所成之再充填品中,於墨水後端裝填將礦物油作為主成分之墨水追蹤體,製作水性原子筆。
使用該水性原子筆,於原稿用紙上進行”GDP”及書寫,以下述基準評價進行評價。
評價基準:
◎:描線時全然無絲狀污漬之問題,觀察到優異之描線。
○:於描線稍觀察到絲狀污漬。
△:於描線稍觀察到少量絲狀污漬。
×:於描線觀察到大量絲狀污漬。
如上述表1之結果明瞭,判知本發明之實施例1~6之書寫工具用水性墨水組成物保有滿足之經時黏度
分佈之均一性,且描線品質優異。
可獲得適用於水性原子筆、標示筆等書寫工具之書寫工具用水性墨水組成物。
Claims (2)
- 一種書寫工具用水性墨水組成物,其特徵係至少含有0.05~1.5質量%之氧化纖維素及0.005~1質量%之琥珀醯聚糖(succinoglycan),且前述氧化纖維素與前述琥珀醯聚糖之質量比率為30:1~1:2。
- 一種書寫工具,其特徵係搭載如請求項1之書寫工具用水性墨水組成物。
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