WO1994018283A1 - Thermal storage material composition and process for producing the same - Google Patents
Thermal storage material composition and process for producing the same Download PDFInfo
- Publication number
- WO1994018283A1 WO1994018283A1 PCT/JP1994/000203 JP9400203W WO9418283A1 WO 1994018283 A1 WO1994018283 A1 WO 1994018283A1 JP 9400203 W JP9400203 W JP 9400203W WO 9418283 A1 WO9418283 A1 WO 9418283A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- storage material
- heat storage
- material composition
- weight
- Prior art date
Links
Classifications
-
- 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
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
Definitions
- the present invention relates to a composition for a latent heat storage material used for air conditioning and cooling of a building, and a method for producing the same.
- the conditions that must be met for the heat storage material are that the heat storage amount is large, that it operates at the specified temperature level, that it is stable for a long period of time, that it is inexpensive, that it has no toxicity, and that it has no corrosion. And the like. Phase change hydrates are most often studied to satisfy these conditions, and sodium sulfate 10 hydrate is a typical example.
- Japanese Patent Application Laid-Open No. 60-20036867 discloses that in a sodium sulfate-based heat storage material composition, water containing a silicone-based antifoaming agent and a chelating agent is added to awn ffl to store heat. A method for suppressing the deterioration of the amount has been proposed. In this method, it is essential that a silicone-based antifoaming agent and a chelating agent coexist, and if both are absent, a decrease in heat storage after 500 cycles is observed.
- the nucleating agent dispersed by this method is maintained in a dispersed state by electrostatic repulsion by a surfactant, it is inevitable that the nucleating agent will sediment by gravity for a long period of use for several months or several years. It is difficult to keep the nucleating agent in a uniformly dispersed state.
- the present inventors have obtained by polymerizing at least one monomer selected from unsaturated carboxylic acids, organic unsaturated sulfonic acids and salts thereof and a polyfunctional monomer.
- a heat storage material composition in which the amount of heat storage does not decrease over a long period of time, and a method for producing the same have been proposed (Japanese Patent Application Laid-Open No. Sho 62-25188).
- ice heat storage has been attracting attention for a long time and has been put to practical use. It uses the large latent heat of melting of ice (8 Oca 1 / g). However, in order to produce ice, it is necessary to cool to less than 110 ° C, which requires a special refrigerator, and the initial capital investment is expensive.
- the melting point of the heat storage material mainly composed of sodium sulfate is reduced to around 10 ° C.
- U.S. Pat.No. 4,689,164 per mole of sodium sulfate 10 hydrate, per mole of ammonium chloride, 3-4 to 6-4 moles, and potassium chloride, 15 to 1-4 moles.
- a system has been proposed in which a thixotropic agent and a nucleating agent are added to a composition comprising
- the system has a melting point below 50 ° F. (10 ° C.) and a heat of fusion of 38 to 42 BTU / lb (21 to 23 cal / g).
- this system has the problem that the divergence between the melting point and the freezing point is so large that it needs to be cooled below 3 ° C for freezing:
- an object of the present invention is to solve the above-mentioned problems of the conventional technology. That is, the present invention provides a heat storage material composition in which a phase change of melting and solidification occurs in the operating temperature range (6 to 14 ° C) of a general-purpose refrigerator used in air conditioning and cooling, and the heat storage amount does not decrease over a long period of time.
- the present invention comprises the following inventions.
- Inorganic salt composition containing 1.5 to 2.5 moles of ammonium chloride and 10 to 27 moles of water per mole of sodium sulfate (in terms of anhydride) 85.0-99 5 parts by weight, (ii) 0.5 to 15.0 parts by weight of a water-swellable crosslinked polymer, and (iii) 0.01 to 5.0 parts by weight of a surfactant having a polyoxyalkylene chain.
- a heat storage material composition comprising:
- Inorganic salt composition containing 1.7 to 2.2 moles of ammonium chloride and 10 to 27 moles of water per mole of sodium sulfate (in terms of anhydride) 90.0 to 99 0.5 parts by weight, (1) 0.5 to 10.0 parts by weight of the water-swellable crosslinked polymer, and (iii) 0.01 to 5.0 parts by weight of a surfactant having a polyoxyethylene chain.
- a heat storage material composition comprising:
- a heat storage material composition comprising: 4. The heat storage material composition according to item (1) or (2), wherein the water-swellable crosslinked polymer is a water-absorbing resin.
- the water-swellable crosslinked polymer is at least one monomer selected from unsaturated carboxylic acids, organic unsaturated sulfonic acids and salts thereof, and acrylamide, and a polyfunctional monomer.
- Water-soluble acryl polymer is used for both polyacrylamide, partially hydrolyzed polyacrylamide, sodium polyacrylate and sodium acrylamide acrylate.
- Item 3. The heat storage material composition according to item (3), which is at least one selected from polymers. 7. In the presence of sodium sulfate, ammonium chloride, water, and a surfactant having a polyoxyalkylene chain, selected from unsaturated carboxylic acids, organic unsaturated sulfonic acids and salts thereof, and acrylamide.
- (1) The method for producing a heat storage material composition according to the above (1), wherein at least one kind of monomer and a polyfunctional monomer are polymerized using a polymerization initiator.
- a ripening material composition according to item (2), characterized in that at least one kind of monomer is polymerized with an acrylamide or a polyfunctional monomer using a polymerization initiator.
- Acrylamide and polyfunctional monomer are polymerized using a polymerization initiator in the presence of sodium sulfate, ammonium chloride, water, and a surfactant having a polyoxyethylene chain.
- Polyoxyethylene chain surfactants include polyoxyethylene alkyl ether sulfate, polyoxyethylene alkyl phenyl ether sulfate, polyoxyethylene alkylamine, and polyoxyethylene sorbitan.
- thermoforming a heat storage material composition according to any one of Items (8), (9) or (10), wherein the heat storage material composition is at least one member selected from the group consisting of a fatty acid ester and a polyoxetylene fatty acid ester.
- FIG. 1 shows a solidification curve in a temperature history test of repeated melting and solidification of Example 1 and Comparative Example 1.
- reference numeral 1 denotes a coagulation curve in Example 1
- reference numeral 2 denotes a coagulation curve in Comparative Example 1.
- FIG. 2 shows a solidification curve in a temperature history test of repeated melting and solidification of Example 5 and Comparative Example 5.
- reference numeral 3 indicates a coagulation curve in Example 5
- reference numeral 4 indicates a coagulation curve in Comparative Example 5.
- anhydrous sodium sulfate or sodium sulfate 10 hydrate can be used as the raw material sodium sulfate.
- Ammonia chloride is used to lower the melting point, and is used in an amount of 1.5 to 2.5 moles, preferably 1.7 to 2 moles, per mole of sodium sulfate (anhydride equivalent). 2 moles. If the amount is less than 1.5 mol, the lowering of the melting point is not sufficient, and even if it exceeds 2.5 mol, the effect of lowering the melting point is saturated.
- a conventionally known compound for adjusting the melting point such as sodium chloride, chlorine chloride, sodium nitrate, potassium oxalate, and magnesium nitrate, is added.
- the amount of water used is 10 to 2 moles, preferably 15 to 24 moles, per mole of sodium sulfate (anhydrous equivalent). If the amount is less than 10 moles, the condensed amount of sodium sulfate decreases and the amount of heat storage decreases, which is not preferable.If the amount exceeds 27 moles, the effect of diluting sodium sulfate is reduced. It is not preferable because it becomes too large and causes a decrease in heat storage.
- the water-swellable crosslinked polymer used in the present invention is a polymer having a three-dimensional network structure, which swells by interaction with water to form a so-called hydrogel.
- a resin made of a polymer electrolyte as a raw material has a high water absorption capacity of several tens to several hundreds times its own weight, is called a water-absorbent resin, and is preferred as the water-swellable crosslinked polymer in the present invention. It is a new thing.
- Water-absorbing resins are broadly classified into starch, cellulose, and synthetic polymer types. Synthetic polymer types include polyacrylic acid, starch / polyacrylic acid, and polyvinyl alcohol / / Polyacrylic acid-based, polyvinyl alcohol-based, polyacrylamide-based, and polyoxyethylene-based water-absorbing resins. These are described in detail in Chapter 1 of “Superabsorbent Polymers” (by Yoshifumi Takada, published by Kyoritsu Publishing Co., Ltd., 1987).
- the water-absorbent resin powder can be used as the water-swellable crosslinked polymer. Since these are used in a concentrated solution such as sodium sulfate, those which are not easily affected by the electrolyte are preferred.
- the amount of the water-swellable crosslinked polymer or the water-soluble acryl polymer to be described later is 0.5 to 15.0 parts by weight based on 85.0 to 99.5 parts by weight of the inorganic salt composition. Parts by weight, preferably 0.5 to 10.0 parts by weight based on 90.0 to 99.5 parts by weight of the inorganic salt composition. When the amount is less than 0.5 part by weight, it is not preferable because the viscous effect is low. When the amount is more than 15.0 parts by weight, it is not preferable because it is too viscous and difficult to handle.
- water-swellable crosslinked polymer examples include an unsaturated carboxylic acid, an organic unsaturated sulfonic acid and salts thereof, and acrylamide in the presence of the above-mentioned inorganic salt composition.
- a crosslinked polymer obtained by polymerizing at least one kind of monomer selected from and a polyfunctional monomer using a polymerization initiator can be used.
- Examples of the unsaturated carboxylic acid include acrylic acid, methacrylic acid, hydroxyxylacrylic acid, and itaconic acid.
- Examples of the organic unsaturated sulfonic acid include 2-acrylinoleamide_2-methylpropanesulfonic acid, p-styrene sulfonic acid, sulfoethyl methacrylate, arylsulfonate, and methyl sulfonate.
- Taryl sulfonic acid and the like are exemplified.
- a sodium salt can be used.
- Sodium methacrylate or sodium methacrylate is the most preferred.
- copolymers having different anionic properties can be obtained.
- the ratio of this anionic property may affect the phase change temperature.
- the ratio of acrylamide is preferably 50 to 90 mol%.
- the amount of the monomer (the amount of the polymer) can be an amount corresponding to the amount of the water-absorbing resin described above. About 1 to the entire heat storage material composition!
- Multifunctional monomers are used to crosslink the polymer.
- a water-soluble polyfunctional monomer is used. Specifically, N, N'—methylenebisacrylamide, N, N'—methylenebismethacrylamide, N, N'—dimethylenebisacrylamide, N, N ' —Examples include dimethylenebismethacrylamide.
- N, N'-methyl acrylamide or ⁇ , ⁇ '-methyl methacrylamide can be used.
- the amount used is in the range of 0.05 to 0.2 mol, preferably in the range of 0.01 to 0.2 mol per mol of the monomer. If the amount is less than 0.05 mol, the crosslinking effect is poor, and if it exceeds 0.2 mol, the effect corresponding to the added amount is not obtained, so that it is not preferable.
- the above monomers and polyfunctional monomers are cross-linked polymerized as a result of the polymerization reaction described below. Generate a body.
- the proportion of the crosslinked polymer in the heat storage material composition is the sum of the amounts of the above-mentioned monomer and the polyfunctional monomer used, and the inorganic salt composition is 85.'0-99.5 parts by weight.
- from 0.5 to 15.0 parts by weight preferably from 90.0 to 99.5 parts by weight, from 0.5 to] 0.0 parts by weight, more preferably 94 It is preferably 2 to 5.5 parts by weight based on 5 to 98.0 parts by weight.
- polymerization initiator used in the polymerization examples include diacetyls such as acetyl peroxide, lauroyl peroxide and benzoyl peroxide, hydroperoxides such as cumene hydroperoxide, and di-tert-butylperoxide.
- diacetyls such as acetyl peroxide, lauroyl peroxide and benzoyl peroxide
- hydroperoxides such as cumene hydroperoxide
- di-tert-butylperoxide examples of the polymerization initiator used in the polymerization
- Well-known radical polymerization initiators such as alkyl peroxides, ammonium peroxydisulfate or potassium hydroxide, hydrogen peroxide, and 2,2-azobisisobutyronitrile can be used in usual amounts. Of these, redox polymerization initiators are preferred because they are active at relatively low temperatures.
- the redox polymerization initiator suitably used in the present invention is a water-soluble one among commonly known ones.
- the oxidizing agent include ammonium peroxydisulfate or potassium and hydrogen peroxide
- examples of the reducing agent include sodium thiosulfate, sodium sulfite, and ferrous sulfate.
- the temperature for the cross-linking polymerization is not less than the melting point of sodium sulfate 10 hydrate or its eutectic salt, and is not necessarily limited, but is usually 20 to 50.
- Redox polymerization initiators exhibit polymerization activity in a relatively short time when the constituent oxidizing agent and reducing agent are mixed. Deactivates when it comes into contact with oxygen in the air after the polymerization activity has developed. Therefore, after mixing the two, it is necessary to deliver the mixture to a container that is polymerized as quickly as possible without contact with air.
- the monomer is used without using a crosslinked polymer or the like as a raw material, the mixing operation is easy.
- a monomer is used as a starting material instead of a crosslinked polymer or the like, so that the mixed material before polymerization is a liquid composition having a low viscosity. Therefore, the mixed material can be easily injected even if the container has many and complicated shapes.
- a heat storage material that is a viscous liquid or a jelly-like solid can be easily stored in a container having a complex shape. In the case where polymerization is carried out by filling the mixed material in the container, it is not always necessary to perform nitrogen replacement in the container.
- the oxidizing agent and the reducing agent are mixed. It is desirable to pour the product while continuously mixing it in the flow system to the container.
- a method of separately adding an oxidizing agent and a reducing agent during the injection of a liquid composition of sodium sulfate or a eutectic salt thereof and a monomer such as water into a container Dissolving one of the agent and the reducing agent and adding the other during the injection into the container, dividing the liquid composition, dissolving the oxidizing agent in one and the reducing agent in the other
- a method in which the two liquids collide and mix in the injection path of, and are injected into a container is a method in which the two liquids collide and mix in the injection path of, and are injected into a container.
- the anhydrous sodium sulfate and other additives are kept in the container until the polymerization reaction of the monomer and the like progresses and the viscosity increases.
- a thickener in advance to increase the viscosity of the aqueous medium.
- various known thickeners are used.
- inorganic substances such as fume-like silica, wet-type fine silica, and various clays, and polyacrylic acid are used.
- water-soluble polymers such as sodium and water-absorbing resins.
- the amount of the thickener used is about 0.1 to 7% by weight, and the precipitation of anhydrous sodium sulfate in a short time until the polymerization and crosslinking reaction of the monomer and the like progresses and the viscosity increases. It is sufficient that the amount is such that the viscosity is such that the liquid does not lose its fluidity.
- the water-soluble acrylic polymer used in the present invention includes, for example, Well-known polymers can be used as the polymer-based polymer flocculant, specifically, polyacrylamide, partially hydrolyzed polyacrylamide, sodium polyacrylate, and polyamide. K Illustrative examples include a phosphoric acid sodium acrylate copolymer.
- the surfactant having a polyoxyalkylene chain used in the present invention is not particularly limited as long as it has an effect of affecting the crystal form of sodium sulfate 10-hydrate. And a surfactant having a polyoxypropylene chain.
- a surfactant having a polyoxypropylene chain can be used, but a surfactant having a polypropylene chain is preferred.
- an anion, a nonionic or a cationic surfactant having a poloxyethylene chain can be used as the surfactant having a poloxyxylene chain used in the present invention.
- the anionic surfactant include a polyoxyethylene alkyl ether sulfate ester salt and a polyoxyethylene alkylphenyl ether sulfate ester salt.
- nonionic surfactant examples include a polyoxyethylene alkyl ether, a polyoxyethylene alkylaryl ether, a polyoxyethylene sorbin fatty acid ester, and a polyoxyethylene fatty acid ester.
- Examples of the cationic surfactant include polyoxyethylene alkylamine.
- surfactants are used in an amount of 0.01 to 5.0 parts by weight, preferably 0.05 to 5 parts by weight, based on 90.0 to 99.5 parts by weight of the inorganic salt composition.
- the amount is less than 0.01 part by weight, that is, less than 0.01 part by weight, the effect of addition is not remarkable.
- the amount exceeds 5.0 parts by weight, the effect of addition is no longer improved even if added.
- a supercooling inhibitor can be added to the composition of the present invention.
- a supercooling inhibitor may be added to the mixture before the polymerization, or may be added after the polymerization. However, when the polymerization is carried out in the container in which the heat storage material composition is finally stored, it is necessary to add the mixture to the liquid mixture before the polymerization.
- sodium tetraborate 10-hydrate is generally effective as a supercooling inhibitor.
- the amount used is about 2 to 5% by weight of the entire heat storage material, and may be any amount that is at least the saturation solubility in the aqueous medium in the operating temperature range.
- the pH range in which sodium tetraborate 10-hydrate is stably present in an aqueous medium is neutral to basic. By force Should be neutralized.
- Table 1 summarizes the results.
- the melting point is indicated by the melting start temperature at the start point of the plateau of the melting curve and the melting end temperature at the melting point.
- Example 1 In the same manner as in Example 1, a composition having the composition shown in Table 1 was prepared.
- the temperature of the solidification curve obtained by the same temperature hysteresis test as in Example 1 was as shown in Table 1.
- the solidification curve of Comparative Example 1 at the time of the temperature decrease in the 10th cycle is indicated by reference numeral 2 in FIG.
- Aqueous sodium acid solution obtained by neutralizing acrylic acid to pH 7.5 with a sodium hydroxide aqueous solution was added to 18.0 000 g of a 10% by weight aqueous solution and 15.0 000 g of water. Add 30 more. While stirring with C, 0.148 g of N, N'-methylenebisacrylamide, 15.352 g of anhydrous sodium sulfate, 1.558 g of ammonium chloride, 1.54 g Sodium sodium borate 1.800 g, and polyoxyethylene alkylphenol 1.14 g of a 35% aqueous solution of sodium sodium sulfate (manufactured by Kao Corporation, trade name: Emar NC-35) was added to obtain a mixture. The molar ratio of sodium sulfate (in terms of anhydride) and water of this mixture was as shown in Table 1.
- This mixture was divided into two parts, and 0.060 g of ammonium peroxydisulfate was added to one side, and 0.0600 g of sodium pentasulfate pentahydrate was added to the other side.After mixing, each was mixed with each other. The liquid flow was caused to flow out of the flow path, and the two liquid flows were injected into a glass screw tube having a diameter of 33 mm and a height of 50 mm while colliding and mixing.
- This product was allowed to stand in an atmosphere at 25 ° C, and after one hour, the cross-linking reaction proceeded, and the content was a uniform jelly-like elastic polymer.
- thermocouple was inserted into the obtained polymer to give a temperature history in which the temperature was repeatedly increased and decreased between 22 ° C and -2.
- the solidification curve at the time of cooling in the 10th cycle is indicated by reference numeral 3 in FIG.
- the solidification curve gave a one-step portion of the bleach, the temperature was 6.3 ° C, which was in the range of 0.6 to 14 ° C.
- the solidification curve in the 100th cycle was exactly the same, Comparative Example 5
- Example 5 a jelly-like elastic polymer was obtained in a glass screw tube in exactly the same manner as in Example 5, except that no surfactant was added.
- the solidification curve (10th cycle) measured in the same manner as in Example 5 is indicated by reference numeral 4 in FIG.
- the coagulation curve gave a plateau of 5.2 ° C and did not fall in the range of 6 to 14 ° C. This behavior was exactly the same in the 100th cycle.
- thermocouple was inserted into this to provide a temperature history that cycles between heating and cooling between 22 and -2 ° C.
- the solidification curve at cycle 20 gave a one-step plateau, and its temperature (freezing point) was 7.6 ° C, which was in the range of 6 to 14 ° C.
- Example 6 was the same as Example 6 except that 3.411 g of a 30% by weight aqueous solution of sodium sodium acrylate, 0.775 g of acrylamide, and 10.802 g of water were added. was operated in the same manner as in Example 6 to obtain a jelly-like elastic body. The freezing point was 7.6 ° C.
- Example 6 was carried out in the same manner as in Example 6 except that an aqueous solution of 30% by weight of sodium sodium acrylate was not added, and 1.8000 g of acrylamide and 13.145 g of water were added. By operating in the same manner as in Example 6, a jelly-like elastic body was obtained. The freezing point was 6.0.
- Example 6 0.30 g of a water-absorbent resin powder (manufactured by Sumitomo Chemical Co., Ltd., trade name: Sumikagel) is added, and the same operation as in Example 6 is performed until stirring for 2 minutes to obtain a mixture.
- This mixture is divided into two parts, and an aqueous solution of peroxydisulfuric acid in water is added to one side, and an aqueous solution of sodium sulfite in water is added to the other.
- the liquid flows out of the channel and is injected into a 33 mm diameter x 50 mm high glass screw tube while colliding and mixing the two liquid flows.
- this product is allowed to stand in an atmosphere at 25 ° C, the crosslinking reaction proceeds, and the content becomes a uniform jelly-like elastic material.
- the obtained jelly-like elastic body has the same characteristics as in Example 6.
- thermocouple was inserted into this to give a temperature history of repeated temperature rise and fall cycles between 22 and 12 ° C.
- the solidification curve at cycle 20 gave a single plateau, the temperature of which was 7.6 ° C, in the range of 6 to 14 ° C.
- the solidification curve at the 100th cycle was exactly the same.
- a jelly-like elastic polymer was obtained in a glass screw tube in the same manner as in Example 10 except that the surfactant was not added in Example 10.
- the solidification curve obtained by the same temperature hysteresis test as in Example # 0 gave a one-step plateau, and the temperature was 5.8 ° C, which did not fall within the range of 6 to 14 ° C.
- the solidification curve at the 100th cycle was exactly the same.
- abbreviations indicate the following.
- Inorganic salt molar ratio (per mole of sodium sulfate 10 hydrate)
- Polymer acrylamide Z-sodium sodium acrylate (molar ratio)
- B 2 2.0 mol of ammonium chloride, 0.25 mol of sodium chloride, water 5.
- B 4 2.0 mol of ammonium chloride, 0.25 mol of sodium chloride, water 5.
- the heat storage material composition comprising the specific inorganic salt composition, the water-swellable crosslinked polymer or the soluble acryl polymer, and the surfactant having a polyoxyalkylene chain according to the present invention has a temperature suitable for air conditioning and cooling. It has a melting point and freezing point within the range, has an appropriate difference between the melting point and freezing point, and has stability enough to withstand repeated melting and solidification in long-term use.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Polymerisation Methods In General (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69407362T DE69407362T2 (de) | 1993-02-12 | 1994-02-10 | Warmespeicherzusammensetzung und verfahren zu ihrer herstellung |
EP94906371A EP0638624B1 (en) | 1993-02-12 | 1994-02-10 | Thermal storage material composition and process for producing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2410593 | 1993-02-12 | ||
JP5/24105 | 1993-02-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994018283A1 true WO1994018283A1 (en) | 1994-08-18 |
Family
ID=12129070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1994/000203 WO1994018283A1 (en) | 1993-02-12 | 1994-02-10 | Thermal storage material composition and process for producing the same |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0638624B1 (ja) |
DE (1) | DE69407362T2 (ja) |
WO (1) | WO1994018283A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105101486A (zh) * | 2014-05-13 | 2015-11-25 | 苏州容电储能科技有限公司 | 储能发热材料及其制造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6225188A (ja) * | 1985-07-25 | 1987-02-03 | Sumitomo Chem Co Ltd | 蓄熱材の製造方法 |
JPS62109885A (ja) * | 1985-11-08 | 1987-05-21 | Asahi Chem Ind Co Ltd | 流動性蓄熱材組成物 |
JPH0260986A (ja) * | 1988-08-26 | 1990-03-01 | Sumitomo Chem Co Ltd | 蓄熱材組成物 |
-
1994
- 1994-02-10 DE DE69407362T patent/DE69407362T2/de not_active Expired - Fee Related
- 1994-02-10 WO PCT/JP1994/000203 patent/WO1994018283A1/ja active IP Right Grant
- 1994-02-10 EP EP94906371A patent/EP0638624B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6225188A (ja) * | 1985-07-25 | 1987-02-03 | Sumitomo Chem Co Ltd | 蓄熱材の製造方法 |
JPS62109885A (ja) * | 1985-11-08 | 1987-05-21 | Asahi Chem Ind Co Ltd | 流動性蓄熱材組成物 |
JPH0260986A (ja) * | 1988-08-26 | 1990-03-01 | Sumitomo Chem Co Ltd | 蓄熱材組成物 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0638624A4 * |
Also Published As
Publication number | Publication date |
---|---|
DE69407362D1 (de) | 1998-01-29 |
EP0638624A4 (en) | 1995-08-30 |
DE69407362T2 (de) | 1998-07-16 |
EP0638624A1 (en) | 1995-02-15 |
EP0638624B1 (en) | 1997-12-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH08283316A (ja) | 凝集粒子の形をした水および水性液用の超吸収ポリマーの製造方法 | |
EP0000099A1 (en) | Thermal energy storage material | |
JP3399874B2 (ja) | 洗剤ビルダー、その製造方法、及びポリ(メタ)アクリル酸(塩)系重合体ならびにその用途 | |
JP3103927B2 (ja) | 蓄熱材組成物及びその製造方法 | |
JP3910616B2 (ja) | 重合体の製造方法 | |
JP2733571B2 (ja) | 蓄熱材の製造方法 | |
JPS5916563B2 (ja) | 水溶性カチオン重合体の製法 | |
WO1994018283A1 (en) | Thermal storage material composition and process for producing the same | |
EP0693542B1 (en) | Method for preventing supercooling of a latent heat storage composition and a latent heat storage equipment utilizing the same | |
JP3479166B2 (ja) | 潜熱蓄熱材組成物の過冷却防止方法および潜熱蓄熱装置 | |
JP3688581B2 (ja) | 重合体の製造方法 | |
JP2615896B2 (ja) | 蓄熱材組成物 | |
WO2019244951A1 (ja) | 漂白剤成分を含む組成物及びその製造方法 | |
WO2019244952A1 (ja) | 漂白剤成分を含む組成物及びその製造方法 | |
JP3479109B2 (ja) | 蓄熱材組成物およびその製造方法 | |
JP4711122B2 (ja) | 吸水材 | |
US5882542A (en) | Sodium sulfate base heat-storage composition and process for producing the same | |
EP0273779A1 (en) | Process for producting heat storage materials | |
JP4465727B2 (ja) | 蓄熱材組成物 | |
JP3479172B2 (ja) | 蓄熱材の製造方法 | |
JP4277124B2 (ja) | 掘削泥水用添加剤及びそれを用いた掘削泥水 | |
JPH0472871B2 (ja) | ||
KR100918520B1 (ko) | 저온 안정성이 향상된 수분산 중합용 조성물 및 이로부터제조된 수분산 중합체 | |
WO2001096239A1 (en) | Stabilised magnesium hydroxide slurries | |
NO870165L (no) | Fremgangsmaate for fremstilling av varmelagringsmaterialer. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1994906371 Country of ref document: EP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
ENP | Entry into the national phase |
Ref country code: US Ref document number: 1994 313188 Date of ref document: 19941228 Kind code of ref document: A Format of ref document f/p: F |
|
WWP | Wipo information: published in national office |
Ref document number: 1994906371 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref country code: US Ref document number: 1996 734150 Date of ref document: 19961021 Kind code of ref document: A Format of ref document f/p: F |
|
WWG | Wipo information: grant in national office |
Ref document number: 1994906371 Country of ref document: EP |