WO2003083007A2 - Composition auto-chauffante a base d'acide orthophosphorique impregne sur un oxyde mineral de grande porosite, son procede de preparation et son utilisation - Google Patents
Composition auto-chauffante a base d'acide orthophosphorique impregne sur un oxyde mineral de grande porosite, son procede de preparation et son utilisation Download PDFInfo
- Publication number
- WO2003083007A2 WO2003083007A2 PCT/FR2003/000994 FR0300994W WO03083007A2 WO 2003083007 A2 WO2003083007 A2 WO 2003083007A2 FR 0300994 W FR0300994 W FR 0300994W WO 03083007 A2 WO03083007 A2 WO 03083007A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- composition according
- mineral oxide
- orthophosphoric acid
- oxide
- composition
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/16—Materials undergoing chemical reactions when used
- C09K5/18—Non-reversible chemical reactions
Definitions
- Self-heating composition based on orthophosphoric acid impregnated on a mineral oxide of high porosity, its preparation process and its use
- the present invention relates to a self-heating composition based on orthophosphoric acid impregnated on a mineral oxide of high porosity, its preparation process and its use for heating various drinks and foods without the addition of an external energy source.
- the present invention also relates to a heat source which can be used in a portable heater for heating food or drink.
- the heat sources used in such a device are self-heating compositions which can be stored for long periods and which are activated by the addition of an aqueous solution such as for example water.
- This heat source must not present any danger to the user during storage, transport or during activation.
- US 5,935,486 describes the use of an acid anhydride and in particular of P 2 O 5 and an anhydride base and in particular of CaO which produce heat by their hydration reaction on the one hand and by the neutralization reaction between the hydrated products obtained on the other hand.
- a self-heating composition comprising a mixture of a powder obtained by the dry impregnation of a mineral oxide of great porosity with a sufficient amount of orthophosphoric acid (H 3 PO4) followed by drying with a basic anhydride powder.
- basic anhydride in the sense of the present invention partially hydrated basic oxides such as for example calcium oxide of commercial grade (CaO) well known for containing calcium hydroxides.
- Other examples of basic anhydrides are, for example, metal oxides such as lithium, sodium, potassium, rubidium, cesium, magnesium, strontium, and barium. Mention may in particular be made, among these oxides LjO 2 , Na 2 O, K 2 O, Rb 2 O, Cs 2 O, MgO, CaO, SrO and BaO.
- Calcium oxide (CaO) is the preferred basic anhydride.
- Heat is produced by the hydration of basic anhydride and by the neutralization reaction between the hydrated basic product obtained and the orthophosphoric acid used.
- proportions such as H3PO4 and basic anhydride starting are used that the neutralization reaction is carried out as completely as possible, that is to say in amounts close to the stoichiometric amounts. This in fact makes it possible to obtain a greater amount of heat on the one hand and a substantially neutral final product on the other hand.
- substantially neutral is meant a final product whose pH is between about 4 and about 10, and even more preferably between about 6 and about 8.
- the mineral oxide can be chosen from silica, alumina, silica-alumina, zirconia or titanium oxide.
- silica is used. This can be a precipitation silica or a combustion silica.
- the mineral oxide must be of high porosity. This means that its pore volume must be at least 1 ml / g and preferably at least 3ml / g.
- the mineral oxide may for example be a Tixosil 38A, Tixosil 38D, Tixosil 38X, or Tixosil 365 silica from the company RHODIA.
- the sufficient quantity of orthophosphoric acid to be used for the impregnation preferably corresponds to the maximum quantity which it is possible to impregnate on the mineral oxide, that is to say the volume for which the mineral oxide is more able to absorb liquid orthophosphoric acid.
- the impregnation is carried out dry, that is to say that the concentrated orthophosphoric acid is added with a burette in doses of 25 ml drop by drop.
- the drying is carried out for example in an oven at atmospheric pressure at a temperature between 100 and 200 ° C for at least 3 hours.
- the quantities of CaO and of acid impregnated on the high porosity mineral oxide used during mixing are such that the Ca / P molar ratio is between 0 , 5 and 2 and preferably about 1, 5.
- This product from the mixing stage is obtained in the form of a powder, which it is possible to shape (extruded, pellets, etc.) according to the shaping processes commonly used in industry.
- the self-heating composition of the invention is activated by contacting with an activation solution which is an aqueous solution.
- an activation solution which is an aqueous solution.
- Water is preferred.
- the activation solution is preferably used in an amount such that the amount of water is sufficient to allow complete hydration of the basic anhydride. An excess of water could possibly make it possible to regulate a heating temperature obtained which is too high by evaporation of the water.
- the temperature at within the composition can reach a temperature in the region of 100 ° C. in a few minutes.
- the present invention thus also relates to the use of the composition obtained for the heating of solid or liquid food without external input energy.
- This use can be done in a device provided for this purpose as described for example in document US 5,935,486 incorporated by reference.
- an antifreeze substance such as calcium chloride or prolpylene glycol can be added to the water or to the aqueous solution used. This can be very advantageous when the self-heating device is used under very low temperature conditions.
- This means of generating water can include in particular the heating of a hydrate which releases water or the release of water obtained by breaking an oil-in-water or water-in-oil emulsion.
- Example 1 Example of preparation of a mixture between high porosity silica impregnated with concentrated phosphoric acid and quicklime (CaO) according to the invention
- the high porosity silica used is a silica called Tixosil 38A from the company RHODIA having a pore volume of 3.2 ml / g.
- the sufficient amount of concentrated orthophosphoric acid to be used for the impregnation preferably corresponds to the maximum amount that it is possible to impregnate on the silica, that is to say the volume for which the saturation of the silica is obtained.
- the impregnated silica is dried in an oven at atmospheric pressure at 150 ° C overnight.
- this curve allows us to access the maximum temperature reached by the self-heating system (in this case this maximum temperature is 97.3 ° C), as well as the rate of temperature rise ( here the temperature rise speed is 2.3 ° C / second).
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Cookers (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003244729A AU2003244729A1 (en) | 2002-04-02 | 2003-03-31 | Self-heating composition based on orthophosphoric acid impregnated into a highly porous mineral oxide, method for the production thereof and use of the same |
JP2003580445A JP2005528465A (ja) | 2002-04-02 | 2003-03-31 | 高多孔質無機酸化物へ浸透させたオルトリン酸ベースの自己加熱性組成物、その製造方法及びその使用 |
EP03738213A EP1490452A2 (fr) | 2002-04-02 | 2003-03-31 | Composition auto-chauffante a base d'acide orthophosphorique impregne sur un oxyde mineral de grande porosite, son procede de preparation et son utilisation |
CA002481526A CA2481526A1 (fr) | 2002-04-02 | 2003-03-31 | Composition auto-chauffante a base d'acide orthophosphorique impregne sur un oxyde mineral de grande porosite, son procede de preparation et son utilisation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0204071A FR2837830B1 (fr) | 2002-04-02 | 2002-04-02 | Composition auto-chauffante a base d'acide orthophosphorique impregne sur un oxyde mineral de grande porosite, son procede de preparation et son utilisation |
FR02/04071 | 2002-04-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003083007A2 true WO2003083007A2 (fr) | 2003-10-09 |
WO2003083007A3 WO2003083007A3 (fr) | 2004-04-15 |
Family
ID=27839377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2003/000994 WO2003083007A2 (fr) | 2002-04-02 | 2003-03-31 | Composition auto-chauffante a base d'acide orthophosphorique impregne sur un oxyde mineral de grande porosite, son procede de preparation et son utilisation |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1490452A2 (fr) |
JP (1) | JP2005528465A (fr) |
CN (1) | CN1656192A (fr) |
AU (1) | AU2003244729A1 (fr) |
CA (1) | CA2481526A1 (fr) |
FR (1) | FR2837830B1 (fr) |
WO (1) | WO2003083007A2 (fr) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10036574B2 (en) | 2013-06-28 | 2018-07-31 | British American Tobacco (Investments) Limited | Devices comprising a heat source material and activation chambers for the same |
CN109777373A (zh) * | 2019-03-06 | 2019-05-21 | 北京理工大学 | 中温跨季储热材料 |
US11064725B2 (en) | 2015-08-31 | 2021-07-20 | British American Tobacco (Investments) Limited | Material for use with apparatus for heating smokable material |
US11241042B2 (en) | 2012-09-25 | 2022-02-08 | Nicoventures Trading Limited | Heating smokeable material |
US11452313B2 (en) | 2015-10-30 | 2022-09-27 | Nicoventures Trading Limited | Apparatus for heating smokable material |
US11659863B2 (en) | 2015-08-31 | 2023-05-30 | Nicoventures Trading Limited | Article for use with apparatus for heating smokable material |
US11672279B2 (en) | 2011-09-06 | 2023-06-13 | Nicoventures Trading Limited | Heating smokeable material |
US11825870B2 (en) | 2015-10-30 | 2023-11-28 | Nicoventures Trading Limited | Article for use with apparatus for heating smokable material |
US11924930B2 (en) | 2015-08-31 | 2024-03-05 | Nicoventures Trading Limited | Article for use with apparatus for heating smokable material |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5661960B1 (ja) * | 2014-04-30 | 2015-01-28 | 株式会社山陽テクノ | 化学蓄熱材 |
GB201500582D0 (en) | 2015-01-14 | 2015-02-25 | British American Tobacco Co | Apparatus for heating or cooling a material contained therein |
CN112853509B (zh) * | 2019-11-28 | 2022-04-12 | 南通纺织丝绸产业技术研究院 | 一种具有防伪功能的防伪蚕丝的生产方法及防伪蚕丝的应用及防伪检测方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3766079A (en) * | 1970-10-13 | 1973-10-16 | Smith Inland A O | Exothermic composition |
US4338098A (en) * | 1979-04-03 | 1982-07-06 | Teitin Limited | Solid heat-generating composition |
US5117809A (en) * | 1991-03-04 | 1992-06-02 | Mainstream Engineering Corporation | Flameless heater product for ready-to-eat meals and process for making same |
US5542418A (en) * | 1995-01-30 | 1996-08-06 | Hotcan International, Ltd. | Acid-base fuels for self heating food containers |
US5935486A (en) * | 1996-08-02 | 1999-08-10 | Tda Research, Inc. | Portable heat source |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04331281A (ja) * | 1991-01-25 | 1992-11-19 | Kobe Steel Ltd | 容器発熱体 |
-
2002
- 2002-04-02 FR FR0204071A patent/FR2837830B1/fr not_active Expired - Fee Related
-
2003
- 2003-03-31 AU AU2003244729A patent/AU2003244729A1/en not_active Abandoned
- 2003-03-31 WO PCT/FR2003/000994 patent/WO2003083007A2/fr not_active Application Discontinuation
- 2003-03-31 CN CN 03811796 patent/CN1656192A/zh active Pending
- 2003-03-31 EP EP03738213A patent/EP1490452A2/fr not_active Withdrawn
- 2003-03-31 JP JP2003580445A patent/JP2005528465A/ja not_active Abandoned
- 2003-03-31 CA CA002481526A patent/CA2481526A1/fr not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3766079A (en) * | 1970-10-13 | 1973-10-16 | Smith Inland A O | Exothermic composition |
US4338098A (en) * | 1979-04-03 | 1982-07-06 | Teitin Limited | Solid heat-generating composition |
US5117809A (en) * | 1991-03-04 | 1992-06-02 | Mainstream Engineering Corporation | Flameless heater product for ready-to-eat meals and process for making same |
US5542418A (en) * | 1995-01-30 | 1996-08-06 | Hotcan International, Ltd. | Acid-base fuels for self heating food containers |
US5935486A (en) * | 1996-08-02 | 1999-08-10 | Tda Research, Inc. | Portable heat source |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch, Week 199301 Derwent Publications Ltd., London, GB; Class G04, AN 1993-003933 XP002223566 & JP 04 331281 A (KOBE STEEL LTD), 19 novembre 1992 (1992-11-19) * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11672279B2 (en) | 2011-09-06 | 2023-06-13 | Nicoventures Trading Limited | Heating smokeable material |
US11241042B2 (en) | 2012-09-25 | 2022-02-08 | Nicoventures Trading Limited | Heating smokeable material |
US10036574B2 (en) | 2013-06-28 | 2018-07-31 | British American Tobacco (Investments) Limited | Devices comprising a heat source material and activation chambers for the same |
US11064725B2 (en) | 2015-08-31 | 2021-07-20 | British American Tobacco (Investments) Limited | Material for use with apparatus for heating smokable material |
US11659863B2 (en) | 2015-08-31 | 2023-05-30 | Nicoventures Trading Limited | Article for use with apparatus for heating smokable material |
US11924930B2 (en) | 2015-08-31 | 2024-03-05 | Nicoventures Trading Limited | Article for use with apparatus for heating smokable material |
US11452313B2 (en) | 2015-10-30 | 2022-09-27 | Nicoventures Trading Limited | Apparatus for heating smokable material |
US11825870B2 (en) | 2015-10-30 | 2023-11-28 | Nicoventures Trading Limited | Article for use with apparatus for heating smokable material |
CN109777373A (zh) * | 2019-03-06 | 2019-05-21 | 北京理工大学 | 中温跨季储热材料 |
Also Published As
Publication number | Publication date |
---|---|
EP1490452A2 (fr) | 2004-12-29 |
CN1656192A (zh) | 2005-08-17 |
AU2003244729A8 (en) | 2003-10-13 |
JP2005528465A (ja) | 2005-09-22 |
FR2837830B1 (fr) | 2004-05-21 |
WO2003083007A3 (fr) | 2004-04-15 |
FR2837830A1 (fr) | 2003-10-03 |
CA2481526A1 (fr) | 2003-10-09 |
AU2003244729A1 (en) | 2003-10-13 |
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