CL2016002258A1 - Una composición para el cuidado oral que comprende un carbonato de calcio tratado mediante reacción superficial - Google Patents
Una composición para el cuidado oral que comprende un carbonato de calcio tratado mediante reacción superficialInfo
- Publication number
- CL2016002258A1 CL2016002258A1 CL2016002258A CL2016002258A CL2016002258A1 CL 2016002258 A1 CL2016002258 A1 CL 2016002258A1 CL 2016002258 A CL2016002258 A CL 2016002258A CL 2016002258 A CL2016002258 A CL 2016002258A CL 2016002258 A1 CL2016002258 A1 CL 2016002258A1
- Authority
- CL
- Chile
- Prior art keywords
- calcium carbonate
- oral care
- surface reaction
- care composition
- carbonate treated
- Prior art date
Links
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 title abstract 4
- 229910000019 calcium carbonate Inorganic materials 0.000 title abstract 2
- 238000006557 surface reaction Methods 0.000 title abstract 2
- 239000002245 particle Substances 0.000 abstract 2
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K33/00—Medicinal preparations containing inorganic active ingredients
- A61K33/06—Aluminium, calcium or magnesium; Compounds thereof, e.g. clay
- A61K33/10—Carbonates; Bicarbonates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/20—Protective coatings for natural or artificial teeth, e.g. sealings, dye coatings or varnish
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/02—Stomatological preparations, e.g. drugs for caries, aphtae, periodontitis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/08—Antiallergic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/26—Cellulose ethers
- C08L1/28—Alkyl ethers
- C08L1/286—Alkyl ethers substituted with acid radicals, e.g. carboxymethyl cellulose [CMC]
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/08—Homopolymers or copolymers of acrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Chemical & Material Sciences (AREA)
- Epidemiology (AREA)
- Medicinal Chemistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Polymers & Plastics (AREA)
- Birds (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Rheumatology (AREA)
- Pulmonology (AREA)
- Pain & Pain Management (AREA)
- Immunology (AREA)
- Cosmetics (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
Abstract
<p>UNA COMPOSICIÓN PARA EL CUIDADO ORAL QUE COMPRENDE UN CARBONATO DE CALCIO TRATADO MEDIANTE REACCIÓN SUPERFICIAL, EL CUAL SE ENCUENTRA EN FORMA DE PARTÍCULAS QUE TIENEN UN TAMAÑO DE PARTÍCULA DE CORTE SUPERIOR DETERMINADO EN VOLUMEN IGUAL O INFERIOR A 6 µm.</p>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14161064.2A EP2921173A1 (en) | 2014-03-21 | 2014-03-21 | Surface-reacted calcium carbonate for desensitizing teeth |
Publications (1)
Publication Number | Publication Date |
---|---|
CL2016002258A1 true CL2016002258A1 (es) | 2017-02-10 |
Family
ID=50336202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CL2016002258A CL2016002258A1 (es) | 2014-03-21 | 2016-09-07 | Una composición para el cuidado oral que comprende un carbonato de calcio tratado mediante reacción superficial |
Country Status (21)
Country | Link |
---|---|
US (2) | US10463693B2 (es) |
EP (2) | EP2921173A1 (es) |
JP (1) | JP6352520B2 (es) |
KR (1) | KR20160134795A (es) |
CN (1) | CN106132421B (es) |
AR (1) | AR099786A1 (es) |
AU (1) | AU2015233384B2 (es) |
BR (1) | BR112016021680B1 (es) |
CA (1) | CA2941527C (es) |
CL (1) | CL2016002258A1 (es) |
DK (1) | DK3119408T3 (es) |
ES (1) | ES2777504T3 (es) |
IL (1) | IL247634B (es) |
MX (1) | MX361430B (es) |
PL (1) | PL3119408T3 (es) |
RU (1) | RU2674030C2 (es) |
SG (1) | SG11201607509RA (es) |
TW (1) | TWI615154B (es) |
UY (1) | UY36035A (es) |
WO (1) | WO2015140308A1 (es) |
ZA (1) | ZA201607255B (es) |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2926797B1 (en) * | 2014-03-31 | 2017-09-06 | Omya International AG | Surface-reacted calcium carbonate for remineralisation and whitening of teeth |
EP3176222A1 (en) | 2015-12-01 | 2017-06-07 | Omya International AG | Method for the production of granules comprising surface-reacted calcium carbonate |
EP3175835A1 (en) * | 2015-12-04 | 2017-06-07 | Omya International AG | Oral care composition for remineralisation and whitening of teeth |
CN105999401B (zh) * | 2016-07-22 | 2019-03-08 | 武汉理工大学 | 一种基于羟基磷灰石的牙科抑菌修复材料及其制备方法 |
EP3275946A1 (en) * | 2016-07-25 | 2018-01-31 | Omya International AG | Post treatment of surface-reacted calcium carbonate with different functional cations |
EP3275947A1 (en) | 2016-07-25 | 2018-01-31 | Omya International AG | Surface-reacted calcium carbonate with functional cations |
EP3275537A1 (en) * | 2016-07-25 | 2018-01-31 | Omya International AG | Surface-modified calcium carbonate as carrier for transition metal-based catalysts |
CN107028799B (zh) * | 2017-02-21 | 2020-05-12 | 广州薇美姿实业有限公司 | 一种抗敏美白的口腔涂抹液 |
CN109953896A (zh) * | 2017-12-26 | 2019-07-02 | 苏州口腔医院有限公司 | 一种牙本质小管封闭剂及其制备方法 |
EP3520798A1 (en) * | 2018-01-31 | 2019-08-07 | Omya International AG | Use of functionalized calcium carbonate as active ingredient |
KR102067213B1 (ko) * | 2019-02-27 | 2020-01-16 | 임이종 | 미네랄 칼슘을 포함하는 치약 및 그 제조방법 |
KR102072442B1 (ko) * | 2019-02-27 | 2020-02-03 | 임이종 | 미네랄 칼슘을 포함하는 구강청결제 및 그 제조방법 |
TW202042781A (zh) * | 2019-05-03 | 2020-12-01 | 瑞士商歐米亞國際公司 | 在口腔保健組成物中作為白色顏料的經表面處理之含鎂離子材料 |
EP3733786A1 (en) * | 2019-05-03 | 2020-11-04 | Omya International AG | Surface-treated magnesium ion-containing materials as white pigments in oral care compositions |
EP3882315A1 (en) * | 2020-03-20 | 2021-09-22 | Omya International AG | Surface-treated magnesium ion-containing materials as white pigments in oral care compositions |
CA3144448A1 (en) | 2019-06-28 | 2020-12-30 | Arif Ali Baig | Oral care compositions comprising tin ions |
WO2020264563A1 (en) | 2019-06-28 | 2020-12-30 | The Procter & Gamble Company | Dentifrice compositions comprising tin ions |
EP3888620A1 (en) * | 2020-04-02 | 2021-10-06 | Unilever Global IP Ltd | Oral care system |
DE102020002399A1 (de) | 2020-04-21 | 2021-10-21 | Jürgen Breinlinger | Zahnputzmittel als Pulver oder Granulat |
US11135143B2 (en) | 2020-06-25 | 2021-10-05 | The Procter & Gamble Company | Oral care compositions comprising tin ions |
CN113209358A (zh) * | 2021-05-21 | 2021-08-06 | 上海交通大学医学院附属第九人民医院 | 组织粘合剂及其制备方法和用途 |
EP4355434A1 (en) * | 2021-07-20 | 2024-04-24 | Colgate-Palmolive Company | Oral care compositions comprising hydroxyapatite |
WO2024090565A1 (ja) * | 2022-10-27 | 2024-05-02 | 株式会社メディボ | 歯科用象牙細管封鎖材 |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9117140D0 (en) | 1991-08-08 | 1991-09-25 | Unilever Plc | Treatment of periodontitis |
US6294155B1 (en) * | 1998-04-08 | 2001-09-25 | W. R. Grace & Co. -Conn. | Abrasive silica compositions and dentifrice compositions prepared therefrom |
EP1107725B1 (en) * | 1998-08-24 | 2004-05-19 | Unilever N.V. | Toothpaste comprising fine and coarse calcium carbonate |
FR2787802B1 (fr) | 1998-12-24 | 2001-02-02 | Pluss Stauffer Ag | Nouvelle charge ou pigment ou mineral traite pour papier, notamment pigment contenant du caco3 naturel, son procede de fabrication, compositions les contenant, et leurs applications |
US6436370B1 (en) * | 1999-06-23 | 2002-08-20 | The Research Foundation Of State University Of New York | Dental anti-hypersensitivity composition and method |
WO2001058416A2 (en) * | 2000-02-14 | 2001-08-16 | Alticor Inc. | Toothpaste with dental agent and microbeads |
JP2003073246A (ja) * | 2001-08-31 | 2003-03-12 | Sunstar Inc | 口腔用組成物 |
KR100797365B1 (ko) * | 2001-09-27 | 2008-01-22 | 주식회사 엘지생활건강 | 과민성 치아용 치약 조성물 |
AU2005270010A1 (en) * | 2004-07-02 | 2006-02-09 | Discus Dental, Llc. | Dental compositions with sensitivity relief |
CN100462300C (zh) * | 2005-07-29 | 2009-02-18 | 鸿富锦精密工业(深圳)有限公司 | 碳纳米管生长装置 |
US20070258916A1 (en) * | 2006-04-14 | 2007-11-08 | Oregon Health & Science University | Oral compositions for treating tooth hypersensitivity |
PT1982759E (pt) | 2007-03-21 | 2011-12-23 | Omya Development Ag | Carbonato de cálcio com superfície tratada e sua utilização no tratamento de água residual |
EP1974806B1 (en) | 2007-03-21 | 2011-09-14 | Omya Development Ag | Process for the purification of water |
SI1974807T1 (sl) | 2007-03-21 | 2010-06-30 | Omya Development Ag | Postopek za odstranjevanje motilcev endokrinega sistema |
ES2352298T3 (es) | 2007-12-12 | 2011-02-17 | Omya Development Ag | Proceso para realizar carbonato cálcico precipitado tratado superficialmente. |
PL2249784T3 (pl) * | 2008-02-08 | 2016-12-30 | Produkt do higieny jamy ustnej i sposoby jego stosowania i wytwarzania | |
EP2168572A1 (en) * | 2008-09-30 | 2010-03-31 | Omya Development Ag | New controlled release active agent carrier |
TWI395595B (zh) * | 2009-04-01 | 2013-05-11 | Colgate Palmolive Co | 用於治療牙齒敏感之口腔用組成物及其使用方法與製造 |
RS52297B (en) | 2009-06-15 | 2012-12-31 | Omya Development Ag | PROCEDURE FOR OBTAINING SURFACE CARBONATE CALCIUM BY THE APPLICATION OF LOW ACID |
US8658139B1 (en) * | 2010-02-27 | 2014-02-25 | Squigle, Inc. | Prevention and treatment of oral diseases |
RU2012158245A (ru) * | 2010-07-19 | 2014-08-27 | Дзе Проктер Энд Гэмбл Компани | Композиции, содержащие производные эфирно-масличных соединений, и их применение в средствах личной гигиены |
EP2699217B1 (en) * | 2011-04-18 | 2018-01-24 | Unilever N.V. | Tooth remineralizing oral care compositions |
US9901755B2 (en) | 2011-09-23 | 2018-02-27 | Sancastle Worldwide Corporation | Composition for preventing or treating dentin-associated symptoms or diseases, and method using the same |
EP2882499B1 (en) * | 2012-08-09 | 2016-08-31 | Unilever PLC | Methods and compositions for treating tooth hypersensitivity |
ES2628371T3 (es) * | 2012-10-12 | 2017-08-02 | Omya International Ag | Formulación de forma farmacéutica sólida de disgregación rápida que comprende carbonato de calcio funcionalizado y método para su fabricación |
-
2014
- 2014-03-21 EP EP14161064.2A patent/EP2921173A1/en not_active Withdrawn
-
2015
- 2015-02-17 TW TW104105568A patent/TWI615154B/zh not_active IP Right Cessation
- 2015-03-18 UY UY0001036035A patent/UY36035A/es not_active Application Discontinuation
- 2015-03-18 AR ARP150100816A patent/AR099786A1/es unknown
- 2015-03-20 DK DK15710816.8T patent/DK3119408T3/da active
- 2015-03-20 BR BR112016021680-6A patent/BR112016021680B1/pt active IP Right Grant
- 2015-03-20 WO PCT/EP2015/055962 patent/WO2015140308A1/en active Application Filing
- 2015-03-20 US US15/123,034 patent/US10463693B2/en active Active
- 2015-03-20 PL PL15710816T patent/PL3119408T3/pl unknown
- 2015-03-20 CN CN201580015414.4A patent/CN106132421B/zh active Active
- 2015-03-20 AU AU2015233384A patent/AU2015233384B2/en active Active
- 2015-03-20 KR KR1020167028954A patent/KR20160134795A/ko not_active Application Discontinuation
- 2015-03-20 EP EP15710816.8A patent/EP3119408B1/en active Active
- 2015-03-20 JP JP2017500430A patent/JP6352520B2/ja active Active
- 2015-03-20 MX MX2016011700A patent/MX361430B/es active IP Right Grant
- 2015-03-20 CA CA2941527A patent/CA2941527C/en active Active
- 2015-03-20 SG SG11201607509RA patent/SG11201607509RA/en unknown
- 2015-03-20 RU RU2016141139A patent/RU2674030C2/ru active
- 2015-03-20 ES ES15710816T patent/ES2777504T3/es active Active
-
2016
- 2016-09-05 IL IL247634A patent/IL247634B/en active IP Right Grant
- 2016-09-07 CL CL2016002258A patent/CL2016002258A1/es unknown
- 2016-10-20 ZA ZA2016/07255A patent/ZA201607255B/en unknown
-
2019
- 2019-08-26 US US16/551,511 patent/US20200061105A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
TWI615154B (zh) | 2018-02-21 |
ZA201607255B (en) | 2018-05-30 |
US20170157171A1 (en) | 2017-06-08 |
CA2941527A1 (en) | 2015-09-24 |
RU2674030C2 (ru) | 2018-12-04 |
KR20160134795A (ko) | 2016-11-23 |
MX361430B (es) | 2018-12-06 |
PL3119408T3 (pl) | 2020-06-29 |
MX2016011700A (es) | 2017-04-25 |
AU2015233384A1 (en) | 2016-09-22 |
EP3119408B1 (en) | 2019-12-18 |
EP3119408A1 (en) | 2017-01-25 |
EP2921173A1 (en) | 2015-09-23 |
CN106132421B (zh) | 2021-01-29 |
CA2941527C (en) | 2018-07-03 |
BR112016021680B1 (pt) | 2021-06-01 |
JP2017508812A (ja) | 2017-03-30 |
IL247634A0 (en) | 2016-11-30 |
WO2015140308A1 (en) | 2015-09-24 |
ES2777504T3 (es) | 2020-08-05 |
DK3119408T3 (da) | 2020-03-16 |
BR112016021680A2 (pt) | 2018-12-04 |
CN106132421A (zh) | 2016-11-16 |
JP6352520B2 (ja) | 2018-07-04 |
RU2016141139A (ru) | 2018-04-24 |
SG11201607509RA (en) | 2016-10-28 |
TW201536336A (zh) | 2015-10-01 |
US20200061105A1 (en) | 2020-02-27 |
UY36035A (es) | 2015-10-30 |
AU2015233384B2 (en) | 2017-08-03 |
AR099786A1 (es) | 2016-08-17 |
IL247634B (en) | 2020-06-30 |
US10463693B2 (en) | 2019-11-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CL2016002258A1 (es) | Una composición para el cuidado oral que comprende un carbonato de calcio tratado mediante reacción superficial | |
AR099787A1 (es) | Una composición para el cuidado oral que comprende un carbonato de calcio tratado mediante reacción superficial | |
PL3443593T3 (pl) | Pikselowany chip z wieloma diodami LED o dużej gęstości | |
LT3121175T (lt) | 1,3-benzodioksazolo dariniai, kaip ezh1 ir (arba) ezh2 inhibitoriai | |
CL2016001383A1 (es) | Composición de limpieza abrasiva | |
AR099564A1 (es) | Composiciones fraguables y sus usos | |
CL2017000750A1 (es) | Pienso de alta resistencia a la abrasión y de buena estabilidad en agua, que contiene pufa | |
CL2016003054A1 (es) | Método para la producción de gránulos que comprenden carbonato de calcio de reacción superficial. | |
PH12015500847A1 (en) | Oral care compositions | |
AR102203A1 (es) | Composiciones para el cuidado oral que comprenden zinc, arginina y serina | |
MX2015003910A (es) | Naringenina y sales de la misma para potenciacion de la dulzura. | |
PE20161498A1 (es) | Composicion reactiva basada en bicarbonato de sodio y procedimiento para su produccion | |
EP3102639C0 (en) | SURFACE-TREATED CALCIUM CARBONATE, METHOD FOR PRODUCING THEREOF AND COMPOSITIONS THEREOF | |
MY182267A (en) | Polishing composition and polishing method | |
CL2015000284A1 (es) | Una composicion que contiene carbonato de calcio en particulas, la cual esta compuesta de particulas primarias que son prismaticas y que tienen un tamaño promedio de 2 micras o menos; y su uso para el tratamiento de la hipersensibilidad que surge en dientes humanos naturales. | |
IL251682A0 (en) | The composition for oral care containing zinc salts and calcium carbonate | |
HRP20190392T1 (hr) | Adsorbiranje i/ili smanjivanje količine organskih materijala u vodenom mediju upotrebom koloidno istaloženog kalcijevog karbonata | |
CL2015000283A1 (es) | Una composicion que contiene carbonato de calcio en particulas, la cual esta compuesta de particulas primarias que son escalenohedricas y que tienen un tamaño promedio de 2 micras o menos; y su uso para el tratamiento de la hipersensibilidad que surge en dientes humanos naturales. | |
CL2017000613A1 (es) | Proceso en seco para preparar un material que contiene carbonato de metal alcalinotérreo modificado de superficie | |
AR096273A1 (es) | Composición para la higiene bucal con piedra pómez y carbonato de calcio | |
MX2018005918A (es) | Composiciones dentifricas con estabilidad mejorada del fluoruro. | |
GB201611847D0 (en) | Low surface friction drill bit body for use in wellbore formation | |
WO2016055434A8 (fr) | GÉNÉRATEUR DE RADIO-ISOTOPES À PHASE STATIONNAIRE COMPRENANT DE l'OXYDE DE TITANE | |
AR101407A1 (es) | Composiciones para el tratamiento de superficies duras | |
GB2535652A (en) | Use of nanoparticles in cleaning well bores |