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公开(公告)号：EP2907855A4
公开(公告)日：2016-05-18
申请号：EP13845865
申请日：2013-10-10
申请人： MITSUBISHI PENCIL CO
发明人： TAKEUCHI YOJI , KOBAYASHI YUSUKE , SAKANE NORIKO , HANATANI SAKI
CPC分类号： C09D11/18 , B43K7/00 , C08K3/38 , C08K5/17 , C08K5/3475 , C08K5/521 , C08K2003/387 , C09D105/00 , C09D129/04
摘要： Provided is an ink composition for an aqueous ballpoint pen making it possible to draw sharp and fine lines which are less likely to be blurred at an initial part of writing and are written smoothly and which are clear at stop, jump and sweep parts to provide beautiful characters. The ink composition for an aqueous ballpoint pen contains at least water and a colorant and having a dilatant fluid characteristic in at least a part of a region of a shear rate of 1 to 383 s -1 (25°C).
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2.发明公开
公开(公告)号：EP3070131A4
公开(公告)日：2017-05-03
申请号：EP14862293
申请日：2014-10-30
申请人： MITSUBISHI PENCIL CO
发明人： TAKEUCHI YOJI , NISHIJIMA CHIHIRO , SAKANE NORIKO
摘要： Provided is an aqueous ink composition for a writing instrument which is inhibited in time-dependent heterogeneity (difference in viscosity between up- and down-sides) in viscosity distribution in an aqueous ink composition containing an oxidized cellulose and which is excellent in time-dependent viscosity distribution stability. The above aqueous ink composition for a writing instrument includes, for example, an aqueous rink composition containing at least 0.05 to 1.5% by mass of an oxidized cellulose and 0.001 to 30% by mass of sugars having a weight average molecular weight of 5000 or less.
摘要翻译： 本发明提供一种用于书写工具的水性油墨组合物，其在含有氧化纤维素的水性油墨组合物中的粘度分布中经时变化的不均匀性（上下侧粘度差）受到抑制，并且其具有优异的时间依赖性 粘度分布稳定。 上述用于书写工具的水性油墨组合物包括例如含有至少0.05至1.5质量％的氧化纤维素和0.001至30质量％的重均分子量为5000或更低的糖的水性溜冰剂组合物 。
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3.发明公开WATER-BASED INK COMPOSITION FOR WRITING INSTRUMENT 审中-公开WÄSSRIGETINTENZUSAMMENSETZUNGFÜREIN SCHREIBINSTRUMENT
公开(公告)号：EP3053970A4
公开(公告)日：2017-06-07
申请号：EP14849348
申请日：2014-09-19
申请人： MITSUBISHI PENCIL CO
发明人： NISHIJIMA CHIHIRO , SAKANE NORIKO , TAKEUCHI YOJI
摘要： Provided is an aqueous ink composition for a writing instrument which is excellent in storage stability of particles such as pigments, a writing property with the passage of time, and quality of the drawn lines, though having a low viscosity, as compared with conventional thickener and gelling agents such as a xanthane gum. The above ink composition for a writing instrument is characterized by containing 0.05 to 1.5% by mass of an oxidized cellulose and having a limiting viscosity of 10 mPa·s or less derived from a Casson's equation.
摘要翻译： 本发明提供一种书写用具用水性油墨组合物，其与以往的增稠剂相比，虽然粘度低，但颜料等粒子的保存稳定性，经时的书写性，画线的品质优异， 胶凝剂如黄原胶。 上述用于书写工具的墨水组合物的特征在于含有0.05至1.5质量％的氧化纤维素并且具有来自Casson方程的特性粘度为10mPa·s以下。
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公开(公告)号：EP3199601A4
公开(公告)日：2018-04-25
申请号：EP15844353
申请日：2015-09-11
申请人： MITSUBISHI PENCIL CO
发明人： NISHIJIMA CHIHIRO , SAKANE NORIKO , TAKEUCHI YOJI
摘要： Provided is an aqueous ink composition for a writing instrument which is excellent in storage stability of particles, such as pigments, a writing property with the passage of time, followability, and quality of the drawn lines, though having a low viscosity, as compared with aqueous ink compositions prepared by using conventional thickeners and gelling agents, such as xanthan gum. The ink composition for a writing instrument described above includes an aqueous ink composition for a writing instrument containing 0.05 to 1.5% by mass of an oxidized cellulose and having a limiting viscosity of 16 mPa€¢s or less derived from Casson's equation, a viscosity value of 100 to 3000 mPa€¢s at a shear rate of 3.83 s -1 and a viscosity value of 10 to 40 mPa€¢s at a shear rate of 383 s -1 .
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