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1.发明授权公开(公告)号：US11820905B2
公开(公告)日：2023-11-21
申请号：US17631099
申请日：2020-08-28
IPC分类号： C09D11/17 , C07C69/618 , B43K1/12 , B82Y30/00
CPC分类号： C09D11/17 , B43K1/12 , B82Y30/00 , C07C69/618
摘要： A process for preparing in situ an aqueous gel ink with fixed color comprising the following steps: (i) preparing a gel-based matrix of aqueous ink comprising ester(s) of retinol represented by formula (I), and (ii) adding a solution of gold salts (Au3+) to the gel-based matrix of aqueous ink prepared in step (i), to obtain an aqueous gel ink with fixed color with gold nanoparticles dispersed therein. An aqueous gel ink with fixed color obtained according to the process of the invention, comprising the ester of retinol represented by formula (I) and gold nanoparticles. A writing instrument comprising an aqueous gel ink with fixed color.
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2.发明授权公开(公告)号：US11802214B2
公开(公告)日：2023-10-31
申请号：US17631115
申请日：2020-08-28
IPC分类号： C09D11/17 , C07C69/618 , B43K1/12 , B82Y30/00
CPC分类号： C09D11/17 , B43K1/12 , B82Y30/00 , C07C69/618
摘要： A process for preparing in situ an aqueous gel ink with variable color comprising the following steps: (i) preparing a gel-based matrix of aqueous ink comprising an N-Acyl-aminophenol, wherein the hydroxyl group is preferably in meta or para position on the benzenic group, and (ii) adding a solution of silver salts to the gel-based matrix of aqueous ink prepared in step (i), to obtain an aqueous gel ink with variable color with silver nanoparticles disposed therein. An aqueous gel ink with variable color obtained according to process for preparing, comprising an N-Acyl-aminophenol, wherein the hydroxyl group is preferably in meta or para position on the benzenic group and silver nanoparticles. A writing instrument comprising an aqueous gel ink with variable color.
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公开(公告)号：US11807762B2
公开(公告)日：2023-11-07
申请号：US17296176
申请日：2019-11-18
申请人： SOCIETE BIC , UNIVERSITE DE HAUTE ALSACE , CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S.)
摘要： There is a process for preparing in situ an aqueous gel ink with variable color having the following steps:
(i) preparing a gel-based matrix of aqueous ink comprising a reducing agent,
(ii) adding a solution of metallic salts,
(iii) adding iron powder to obtain an aqueous gel ink with variable color,
wherein the steps (ii) and (iii) can be interchanged.
There also is an aqueous gel ink with variable color obtained according to the process of the disclosure, having a reducing agent, metallic nanoparticles and iron powder.
There further is a writing instrument having an aqueous gel ink with variable color according to the disclosure.-
公开(公告)号：US12116493B2
公开(公告)日：2024-10-15
申请号：US18547656
申请日：2022-02-24
摘要： A kit comprising a) an aqueous writing ink composition, containing—metal nanoparticles as coloring agent wherein the metal nanoparticles essentially consists of metal and the metal is chosen from silver, gold, aluminum and/or copper and—a dispersing agent, and b) an eradicator fluid containing at least one oxidizing agent. An aqueous eradicator fluid for erasing an aqueous writing ink composition containing metal nanoparticles as the coloring agent, in which the fluid contains an oxidizing agent and—a volatile solvent. A writing instrument containing the eradicator fluid, the use of the eradicator fluid and/or of the kit containing it and a method of correcting errors of a written mark made on a porous substrate.
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公开(公告)号：US20180294155A1
公开(公告)日：2018-10-11
申请号：US15572059
申请日：2016-05-03
发明人： Olivier Soppera , Hsiao-Wen Zan , Hung-Cheng Lin , Chang-Hung Li , Fabrice Stehlin , Arnaud Spangenberg , Fernand Wleder , Chung-Chen Yeh
摘要： Processes for obtaining a semiconductor nanodevice comprising a substrate, onto which patterned metal-oxide thin films having semiconductor properties are deposited, are provided, as well as semiconductor devices comprising them. The present invention belongs to the field of semiconductor nanodevices.
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