US2264389A - Cooling fluid of antileak and nonfoaming character - Google Patents
Cooling fluid of antileak and nonfoaming character Download PDFInfo
- Publication number
- US2264389A US2264389A US332477A US33247740A US2264389A US 2264389 A US2264389 A US 2264389A US 332477 A US332477 A US 332477A US 33247740 A US33247740 A US 33247740A US 2264389 A US2264389 A US 2264389A
- Authority
- US
- United States
- Prior art keywords
- cooling fluid
- alginate
- weight
- calcium
- cooling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012809 cooling fluid Substances 0.000 title description 17
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 18
- 239000000203 mixture Substances 0.000 description 18
- 235000010443 alginic acid Nutrition 0.000 description 17
- 229920000615 alginic acid Polymers 0.000 description 17
- 229940072056 alginate Drugs 0.000 description 13
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 description 11
- 150000003839 salts Chemical class 0.000 description 11
- -1 alginate compound Chemical class 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 10
- 238000005260 corrosion Methods 0.000 description 10
- 238000005187 foaming Methods 0.000 description 9
- 238000007710 freezing Methods 0.000 description 9
- 230000008014 freezing Effects 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 description 7
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 7
- 229910052791 calcium Inorganic materials 0.000 description 7
- 239000011575 calcium Substances 0.000 description 7
- 235000010413 sodium alginate Nutrition 0.000 description 7
- 239000000661 sodium alginate Substances 0.000 description 7
- 229940005550 sodium alginate Drugs 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 108010053481 Antifreeze Proteins Proteins 0.000 description 6
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 6
- 230000002528 anti-freeze Effects 0.000 description 6
- 229910052788 barium Inorganic materials 0.000 description 6
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000001816 cooling Methods 0.000 description 6
- 230000000994 depressogenic effect Effects 0.000 description 6
- 239000003112 inhibitor Substances 0.000 description 6
- 239000002518 antifoaming agent Substances 0.000 description 5
- 239000006260 foam Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- RAFRTSDUWORDLA-UHFFFAOYSA-N phenyl 3-chloropropanoate Chemical compound ClCCC(=O)OC1=CC=CC=C1 RAFRTSDUWORDLA-UHFFFAOYSA-N 0.000 description 5
- 230000003449 preventive effect Effects 0.000 description 5
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 4
- 229910052712 strontium Inorganic materials 0.000 description 4
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical class [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052749 magnesium Chemical class 0.000 description 3
- 239000011777 magnesium Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000002823 nitrates Chemical class 0.000 description 3
- 150000002826 nitrites Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 229960001126 alginic acid Drugs 0.000 description 2
- 239000000783 alginic acid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000235789 Hyperoartia Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- AAJBNRZDTJPMTJ-UHFFFAOYSA-L magnesium;dinitrite Chemical class [Mg+2].[O-]N=O.[O-]N=O AAJBNRZDTJPMTJ-UHFFFAOYSA-L 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 159000000008 strontium salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
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
- C09K5/20—Antifreeze additives therefor, e.g. for radiator liquids
Definitions
- the invention relates to cooling fluids of nonfoaming and anti-leak characteristics, and is particularly concerned with anti-freeze cooling liquids incorporating additive materials adapted to retard or prevent fluid loss in circulatory 0001-. ing systems through either foaming or leakage.
- leaks in the cooling system of automobile engines is not at all uncommon, and the operating conditions of such a system are conducive to the formation of foam in cooling fluids containing an alcohol type freezing point depressant.
- Leakage may occur through small orifices such as solder pores, through minute crevices resulting from imperfect union of the metal parts, or through other small openings which may develop in the seams or soldered joints by road shock and vibration, corrosion, or freezing of the cooling fluid.
- Foaming in a cooling liquid is invariably promoted by unavoidable aeration accompanied with a rapid circulation and agitation at high temperatures, causing air bubbles to become entrained in the fluid; and the presence of corrosion inhibitors or other additive agents, now commonly used in anti-freeze liquids, may also increase the foaming tendency. Serious liquid loss and other difliculties may result from either leakage or foaming, and 'both are obviously undesirable.
- a further object is to provide aninhibitor mixture having both a leakage and foam preventive function, and in certain instances a corrosion inhibiting action, which mixture is particularly adaptable toincorporation with cooling fluids containing a metal.
- freezing point depressant composed of a monothe purpose of the invention, is in pure form a colorless, odorless, and tasteless colloid, neutral in reaction, and soluble in hot or cold water.
- the alginates swell in water, and in small conthe compounds are uniformly dispersible in cooling fluids entirely of water, or in those containing freezing point depressants such as alcohols, glycols or glycerine.
- Various alginate products are available commercially in dry powdered form or as pastes, and tests on many of these have indicated a universal effectiveness in their leak stoppage action.
- a product particularly satisfactory is a finely milled sodium valginate which has not been entirely purified, and may contain up to 25 of insoluble fibrous material.
- the insoluble component is, however, unessential to the leak sealing action of the product, and the more highly purified alginate compounds are likewise effective for the purpose of the invention.
- the amount of alginate necessary in the cooling fluid to impart satisfactory anti-leak properties will vary with the particular conditions under which it is, used, but for allnormal purposes only very small amounts are required, preferably within the range of 0.000l% to 0.10% by weight of the cooling solution.
- a preferred procedure of incorporating the compoundsin a concentrated alcohol solution consists in flrstmixing a small portion of the required calcium or other salt component in aqueous solution with the alginate, to form a thin coating on the alginate particles, and then adding the additional required amount of salt along with a pretreated alginate compound.
- a number of specific salts will serve the purpose here intended, but an additional important advantage can be attained with this invention by employing as the anti-foam agent a salt containinga nitrite ornitrate ion, both of which ions in solution are known to be excellent corrosion inhibitor agents.
- a salt containinga nitrite ornitrate ion both of which ions in solution are known to be excellent corrosion inhibitor agents.
- calcium, barium, strontium, or magnesium nitrites or nitrates are the preferred anti-foam salt components, whichin further mixture with sodium alginate will provide a complete inhibitor composition of a corrosion preventive function, as well as of anti-leak and non-foaming properties.
- Characteristic formulae which have proven especially effective with alcohols include ethylene glycol or.other glycol anti-freeze solutions, contain about 0.01% to- 0.10% by weight of the alcohol of sodium alginate, and about 0.3% to 1.0% on a similar weight basis of calcium nitrite.
- Calcium nitrate may be substituted, in whole or in part, for. the calcium nitrite of such formula, as can alsohsimilar barium, strontium, and magnesiurmsalts.
- a typical mixture for an ethylene glycol anti-freeze, containing both a nitrate and nitrite salt, consists, in percentage by weight of the glycol, of about 0.55% calcium nitrite, about 0.07% calcium ni-- trate, and about 0.035% sodium alginate.
- Other inhibitor materials can be added to this formula if desired.
- the invention contemplates the use of the inhibitor mixture specified with many different coolants, particularly those containing monohydric or polyhydric alcohols as freezing point depressants, and further specific corrosion nhibitors, or other additive agents, may be used in conjunction with the essential anti-leak and antifoam composition disclosed.
- coolants particularly those containing monohydric or polyhydric alcohols as freezing point depressants, and further specific corrosion nhibitors, or other additive agents, may be used in conjunction with the essential anti-leak and antifoam composition disclosed.
- many different anti-freeze cooling fluid formulae are possible within the broader scope of the invention, which should not be limited other than as defined by the appended claims.
- . and corrosion preventive composition comprising a mixture essentially composed of sodium alginate, and a member of the group consisting of nitrites and nitrates of calcium, barium, strontium and magnesium, the respective amountsof said components being about 0.01% to 0.10% by weight of the alcohol 01' the alginate, and about 0.30% to 1.0%by weight of the metal salt.
- a cooling fluid containing ethylene glycol as a freezing point depressant, and a leakage, foam, and corrosion'preventive composition comprising a mixture essentially composed of sodium alginate and a member of the group consisting of calcium nitrite and calcium nitrate, the respective amounts of said components being about 0.01% to 0.10% by weight of the glycol of the alginate, and about 0.30% to 1.0% by weight of the calcium salt.
- a cooling fluid containing ethylene glycol as a freezing point depressant, and a leakage, foam, and corrosion preventive composition comprising a mixture essentially composed of about 0.035% by weight of theglycol of sodium alginate, about 0.55% by weight of calcium nitrite, and about acid, and a. soluble alkaline earth metal salt, said components being present in an amount of about 0.0001% to 0.10% by weight of the cooling fluid of the alginic acid salt, and about 0.10% to 1.0% by weight of the alkaline earth metal salt.
- Method of preventing leakage, foaming and corrosion of an alcohol-containing cooling fluid in a circulatory cooling system which comprises circulating said cooling fluid with' an admixture thereto of a composition essentially comprising a mixture of sodium alginate and a member of the group consisting of nitrites and nitrates of calcium, barium, strontiumand magnesium, said components being present in an amount of about 0.01% to 0.10% by weight of the alcohol of the alginate, and about 0.30% to-1.0% by weight of the alkaline earth metal salt.
Description
Patented Dec. 2, i941 COOLING Film or ANTILEAK AND NONFOAMING CHARACTER Headlee Lamprey, Kenmore, N. Y., assignor to Carbide and Carbon Chemicals Corporation, a corporation of New York No Drawing. Application April 30, 1940, Serial No. 332,477
- centrations will form very viscous solutions, but
6 Claims.
The invention relates to cooling fluids of nonfoaming and anti-leak characteristics, and is particularly concerned with anti-freeze cooling liquids incorporating additive materials adapted to retard or prevent fluid loss in circulatory 0001-. ing systems through either foaming or leakage.
The occurrence of leaks in the cooling system of automobile engines is not at all uncommon, and the operating conditions of such a system are conducive to the formation of foam in cooling fluids containing an alcohol type freezing point depressant. Leakage may occur through small orifices such as solder pores, through minute crevices resulting from imperfect union of the metal parts, or through other small openings which may develop in the seams or soldered joints by road shock and vibration, corrosion, or freezing of the cooling fluid. Foaming in a cooling liquid is invariably promoted by unavoidable aeration accompanied with a rapid circulation and agitation at high temperatures, causing air bubbles to become entrained in the fluid; and the presence of corrosion inhibitors or other additive agents, now commonly used in anti-freeze liquids, may also increase the foaming tendency. Serious liquid loss and other difliculties may result from either leakage or foaming, and 'both are obviously undesirable.
It is an object of this invention to provide improved cooling fluids inhibited against leakage and foaming under all normal conditions of use in a circulatory cooling system. A further object is to provide aninhibitor mixture having both a leakage and foam preventive function, and in certain instances a corrosion inhibiting action, which mixture is particularly adaptable toincorporation with cooling fluids containing a metal.
freezing point depressant composed of a monothe purpose of the invention, is in pure form a colorless, odorless, and tasteless colloid, neutral in reaction, and soluble in hot or cold water. The alginates swell in water, and in small conthe compounds are uniformly dispersible in cooling fluids entirely of water, or in those containing freezing point depressants such as alcohols, glycols or glycerine. Various alginate products are available commercially in dry powdered form or as pastes, and tests on many of these have indicated a universal effectiveness in their leak stoppage action. A product particularly satisfactory is a finely milled sodium valginate which has not been entirely purified, and may contain up to 25 of insoluble fibrous material. The insoluble component is, however, unessential to the leak sealing action of the product, and the more highly purified alginate compounds are likewise effective for the purpose of the invention. The amount of alginate necessary in the cooling fluid to impart satisfactory anti-leak properties will vary with the particular conditions under which it is, used, but for allnormal purposes only very small amounts are required, preferably within the range of 0.000l% to 0.10% by weight of the cooling solution.
As an anti-foam agent, in accordance with the invention, I propose to add along with the alginate compound a soluble alkaline earth metal salt, in small proportions but sufficient to create in the cooling fluid a definite ion content of the Calcium, barium, and strontium salts, as wellas salts of magnesium-the latter metal being included herein within the group indicated and defined as alkaline earth metals-are especially effective in amounts which'will produce in a concentrated anti-freeze solution a metal ion content preferably exceeding about 0.05%, the total amount of salt addition depending to a certain extent upon the quantity of the alginate component present. These salts function to prevent the normal foaming tendency of an alcohol freezing point depressant, and they counteract any additional foaming influence which may be created by the alginate compound. The associated action of the components of this proposed mixture is, furthennore, quite unexpected in View of the known properties of the two materials. Alginates of the alkaline earth metals are quite insoluble and might normally be expected to form by reaction in the solution with the added alkaline earth metal salts. This would cause a precipitation of the insoluble alginate and a depletion of the inhibitor agent present in the smaller equivalent proportion, with a con,- sequent loss in effect of either the anti-foam or anti-leak action. These results do not, however, occur, and the anti-leak function of the ents of this mixture, as well as to improvethe dispersion of the alginate member, a preferred procedure of incorporating the compoundsin a concentrated alcohol solution consists in flrstmixing a small portion of the required calcium or other salt component in aqueous solution with the alginate, to form a thin coating on the alginate particles, and then adding the additional required amount of salt along with a pretreated alginate compound. A number of specific salts will serve the purpose here intended, but an additional important advantage can be attained with this invention by employing as the anti-foam agent a salt containinga nitrite ornitrate ion, both of which ions in solution are known to be excellent corrosion inhibitor agents. Thus calcium, barium, strontium, or magnesium nitrites or nitrates, individually or in mixture, are the preferred anti-foam salt components, whichin further mixture with sodium alginate will provide a complete inhibitor composition of a corrosion preventive function, as well as of anti-leak and non-foaming properties. Characteristic formulae which have proven especially effective with alcohols, including ethylene glycol or.other glycol anti-freeze solutions, contain about 0.01% to- 0.10% by weight of the alcohol of sodium alginate, and about 0.3% to 1.0% on a similar weight basis of calcium nitrite. Calcium nitrate may be substituted, in whole or in part, for. the calcium nitrite of such formula, as can alsohsimilar barium, strontium, and magnesiurmsalts. A typical mixture for an ethylene glycol anti-freeze, containing both a nitrate and nitrite salt, consists, in percentage by weight of the glycol, of about 0.55% calcium nitrite, about 0.07% calcium ni-- trate, and about 0.035% sodium alginate. Other inhibitor materials can be added to this formula if desired.
The invention contemplates the use of the inhibitor mixture specified with many different coolants, particularly those containing monohydric or polyhydric alcohols as freezing point depressants, and further specific corrosion nhibitors, or other additive agents, may be used in conjunction with the essential anti-leak and antifoam composition disclosed. Obviously many different anti-freeze cooling fluid formulae are possible within the broader scope of the invention, which should not be limited other than as defined by the appended claims.
This application is a continuation-in-part of my copending application Serial No. 294,630, filed September 13, 1939.
ing of soluble salts of calcium, barium, strontium and magnesium, the respective amounts of said components being about 0.0001% to 0.10% by weight of the cooling fluid of the'alginic acid salt,
and about 0.10% to about 1.0% by weight of the soluble metal salt.
2. A cooling fluid containing an alcohol as a freezing point depressant, and a leakage, foam,
. and corrosion preventive composition comprising a mixture essentially composed of sodium alginate, and a member of the group consisting of nitrites and nitrates of calcium, barium, strontium and magnesium, the respective amountsof said components being about 0.01% to 0.10% by weight of the alcohol 01' the alginate, and about 0.30% to 1.0%by weight of the metal salt.
3. A cooling fluid containing ethylene glycol as a freezing point depressant, and a leakage, foam, and corrosion'preventive composition comprising a mixture essentially composed of sodium alginate and a member of the group consisting of calcium nitrite and calcium nitrate, the respective amounts of said components being about 0.01% to 0.10% by weight of the glycol of the alginate, and about 0.30% to 1.0% by weight of the calcium salt.
4. A cooling fluid containing ethylene glycol as a freezing point depressant, and a leakage, foam, and corrosion preventive composition comprising a mixture essentially composed of about 0.035% by weight of theglycol of sodium alginate, about 0.55% by weight of calcium nitrite, and about acid, and a. soluble alkaline earth metal salt, said components being present in an amount of about 0.0001% to 0.10% by weight of the cooling fluid of the alginic acid salt, and about 0.10% to 1.0% by weight of the alkaline earth metal salt.
6. Method of preventing leakage, foaming and corrosion of an alcohol-containing cooling fluid in a circulatory cooling system, which comprises circulating said cooling fluid with' an admixture thereto of a composition essentially comprising a mixture of sodium alginate and a member of the group consisting of nitrites and nitrates of calcium, barium, strontiumand magnesium, said components being present in an amount of about 0.01% to 0.10% by weight of the alcohol of the alginate, and about 0.30% to-1.0% by weight of the alkaline earth metal salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US332477A US2264389A (en) | 1940-04-30 | 1940-04-30 | Cooling fluid of antileak and nonfoaming character |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US332477A US2264389A (en) | 1940-04-30 | 1940-04-30 | Cooling fluid of antileak and nonfoaming character |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2264389A true US2264389A (en) | 1941-12-02 |
Family
ID=23298402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US332477A Expired - Lifetime US2264389A (en) | 1940-04-30 | 1940-04-30 | Cooling fluid of antileak and nonfoaming character |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2264389A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2675351A (en) * | 1950-03-27 | 1954-04-13 | Drew & Co Inc E F | Method for preventing corrosion and scale |
| US2815328A (en) * | 1955-02-25 | 1957-12-03 | Nat Aluminate Corp | Corrosion inhibitor composition for aqueous liquids |
| US3015630A (en) * | 1959-08-24 | 1962-01-02 | Gen Electric | Aqueous solution for stripping nickel |
| US3110684A (en) * | 1959-12-22 | 1963-11-12 | Leo D Miller | Humidifier preservative |
| US3240707A (en) * | 1960-06-21 | 1966-03-15 | United States Borax Chem | Corrosion inhibitor compositions for aqueous liquids |
| US3980487A (en) * | 1973-12-12 | 1976-09-14 | Nissan Chemical Industries, Ltd. | Anticorrosive gypsum composition |
-
1940
- 1940-04-30 US US332477A patent/US2264389A/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2675351A (en) * | 1950-03-27 | 1954-04-13 | Drew & Co Inc E F | Method for preventing corrosion and scale |
| US2815328A (en) * | 1955-02-25 | 1957-12-03 | Nat Aluminate Corp | Corrosion inhibitor composition for aqueous liquids |
| US3015630A (en) * | 1959-08-24 | 1962-01-02 | Gen Electric | Aqueous solution for stripping nickel |
| US3110684A (en) * | 1959-12-22 | 1963-11-12 | Leo D Miller | Humidifier preservative |
| US3240707A (en) * | 1960-06-21 | 1966-03-15 | United States Borax Chem | Corrosion inhibitor compositions for aqueous liquids |
| US3980487A (en) * | 1973-12-12 | 1976-09-14 | Nissan Chemical Industries, Ltd. | Anticorrosive gypsum composition |
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