US2469284A - Flushing fluid for hydraulic - Google Patents
Flushing fluid for hydraulic Download PDFInfo
- Publication number
- US2469284A US2469284A US2469284DA US2469284A US 2469284 A US2469284 A US 2469284A US 2469284D A US2469284D A US 2469284DA US 2469284 A US2469284 A US 2469284A
- Authority
- US
- United States
- Prior art keywords
- alcohol
- morpholine
- flushing fluid
- solvent
- hydraulic
- 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
- 239000012530 fluid Substances 0.000 title description 40
- 238000011010 flushing procedure Methods 0.000 title description 32
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 32
- 235000019441 ethanol Nutrition 0.000 description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 30
- 239000002904 solvent Substances 0.000 description 28
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 26
- XPFVYQJUAUNWIW-UHFFFAOYSA-N Furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 description 20
- YNAVUWVOSKDBBP-UHFFFAOYSA-N morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 20
- 229940113083 morpholine Drugs 0.000 description 20
- WVDDGKGOMKODPV-UHFFFAOYSA-N benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 18
- 239000000203 mixture Substances 0.000 description 16
- YCIMNLLNPGFGHC-UHFFFAOYSA-N Catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 12
- HPXRVTGHNJAIIH-UHFFFAOYSA-N Cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 12
- PAFZNILMFXTMIY-UHFFFAOYSA-N Cyclohexylamine Chemical compound NC1CCCCC1 PAFZNILMFXTMIY-UHFFFAOYSA-N 0.000 description 12
- DNIAPMSPPWPWGF-UHFFFAOYSA-N propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 12
- JUJWROOIHBZHMG-UHFFFAOYSA-N pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 12
- TUAMRELNJMMDMT-UHFFFAOYSA-N 3,5-xylenol Chemical compound CC1=CC(C)=CC(O)=C1 TUAMRELNJMMDMT-UHFFFAOYSA-N 0.000 description 10
- -1 alpha terpmol Chemical compound 0.000 description 10
- 239000004359 castor oil Substances 0.000 description 8
- 235000019438 castor oil Nutrition 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 8
- 231100000078 corrosive Toxicity 0.000 description 8
- 231100001010 corrosive Toxicity 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 description 6
- IOJUPLGTWVMSFF-UHFFFAOYSA-N Benzothiazole Chemical compound C1=CC=C2SC=NC2=C1 IOJUPLGTWVMSFF-UHFFFAOYSA-N 0.000 description 6
- XBPCUCUWBYBCDP-UHFFFAOYSA-N Dicyclohexylamine Chemical compound C1CCCCC1NC1CCCCC1 XBPCUCUWBYBCDP-UHFFFAOYSA-N 0.000 description 6
- MGSRCZKZVOBKFT-UHFFFAOYSA-N Thymol Chemical compound CC(C)C1=CC=C(C)C=C1O MGSRCZKZVOBKFT-UHFFFAOYSA-N 0.000 description 6
- 239000005844 Thymol Substances 0.000 description 6
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 6
- 235000019445 benzyl alcohol Nutrition 0.000 description 6
- 125000004432 carbon atoms Chemical group C* 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 6
- 150000001896 cresols Chemical class 0.000 description 6
- 229940042397 direct acting antivirals Cyclic amines Drugs 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- SJRJJKPEHAURKC-UHFFFAOYSA-N n-methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 6
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 6
- 229960000790 thymol Drugs 0.000 description 6
- 229930007823 thymol Natural products 0.000 description 6
- WUOACPNHFRMFPN-VIFPVBQESA-N (R)-(+)-α-terpineol Chemical compound CC1=CC[C@H](C(C)(C)O)CC1 WUOACPNHFRMFPN-VIFPVBQESA-N 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 4
- 239000005456 alcohol based solvent Substances 0.000 description 4
- 150000001298 alcohols Chemical class 0.000 description 4
- 239000010951 brass Substances 0.000 description 4
- 239000003518 caustics Substances 0.000 description 4
- 239000003398 denaturant Substances 0.000 description 4
- 230000002542 deteriorative Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N n-butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 230000035515 penetration Effects 0.000 description 4
- 101710025934 ADD3 Proteins 0.000 description 2
- 206010018987 Haemorrhage Diseases 0.000 description 2
- 241001313099 Pieris napi Species 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000002528 anti-freeze Effects 0.000 description 2
- 230000000740 bleeding Effects 0.000 description 2
- 231100000319 bleeding Toxicity 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000002939 deleterious Effects 0.000 description 2
- 239000011928 denatured alcohol Substances 0.000 description 2
- 230000001627 detrimental Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229920000591 gum Polymers 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000000149 penetrating Effects 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 230000001737 promoting Effects 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propanol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000002522 swelling Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
Definitions
- Methyl alcohol is the most desirable because of its low viscosity and specific gravity position useful in the flushing or purging of 5 and because of its eiflciency in penetration of deteriorated brake fluids from hydraulic brake gumined or oxidized castor oil. Low specific systems. More specifically, the invention congravity and viscosity make for added turbulence templates and provides a novel flushing fluid of of flow, under pressure bleeding of the hydraulic the foregoing character which not only possesses system, which results in enhanced washing action. markedly improved solvent action on brake fluid Efficiency in penetration aids in loosening or deterioration products tending to accumulate on softening the gum deposits.
- Ethyl alcohol as well the metal and rubber surfaces of the hydraulic as propyl alcohol may be substituted for the brake system but which also will not corrode the methyl alcohol but, in the case of ethyl alcohol, metal surfaces and cause the rubber parts to denaturants such as petroleum derivatives must swell.
- Butyl alcohol is hydraulic brake systems employing the novel not preferred because of its known property of flushing fluid herein described and claimed. attacking rubber.
- the aliphatic alcohol solvent is the major conpresent time comprise as their principal constitstituent of the improved flushing fluid and should uents castor oil and a solvent therefor.
- castor oil has a tendency to oxidize oi the composition.
- the other components of the and, in time, because of this tendency and also fluid are present in only comparatively minor perb'e ause 0 the tend n y o t e So ent &0 e DO- centages as will appear more particularly hereinrate, hydraulic brake fluids made up of castor oil after.
- a very important feature of the invention is the tent that the brake system becomes less sensidiscovery th t t v t action of 'lower tive and response to brake pedal act COIISB- aliphatic alcohol solvents on deterioration prodfl t y W l
- Preferred solventactlon promofiers are cycltc in inordinate swelling alcohols which may be heterocycllc, carbocychc
- the non-corrosive and improved solvent-action or nymocarbfocychc' Typ1ca1 of these materla'ls flushing fluid of the present invention comprises, found opera/V6 for this purpose are furfuryl alco as its essential ingredients, (1) an organic solhol, cyclohexanol, alpha terpmol, benzyl alcohol vent, and (2) a so1vent acti0n promoter thymol, cresol (USP), 1,3,5 Xylenol, phenol (40 sira'oly, the composition also contains an anticorrosive agent and water.
- aliphatic alcohol solvent of the present flushing fluid composition has in and of itself a slight tendency to cause corrosion of iron and brass parts, it has been found advisable to include in the composition a comparatively small amount (1 to 5%) of an anti-corrosive agent.
- Cyclic amines themselves non-corrosive to metals in the dilution indicated, are suitable for this purpose.
- Typical cyclic amines are: morpholine, methyl morpholine, ethyl morpholine, pipyridine, cyclohexylamine, dicyclohexylamine, benzothiazol, pyridine and aniline.
- these cyclic amines surprisingly enough, likewise exhibit to a certain extent the power of promoting solvent action of the alohol in the sense described hereinbefore. They therefore perform a dual function in the composition.
- Example B Anhydrous methyl alcohol 87.5 1,3,5 xylenol 10.0 Morpholine 1.5 Water 1.0
- Example C Anhydrous ethyl alcohol 91.2 Morpholine 2.0 Cyclohexanol 2.0 Water 4.8 Emample D
- a flushing fluid for hydraulic brake systems comprising the following ingredients in approximately the proportions indicated:
- a flushing fluid for hydraulic brake systems comprising the following ingredients in approximately the proportions indicated:
- a substantially anhydrous flushing fluid for hydraulic brake systems comprising at least 70% of a lower straight chain aliphatic alcohol containing less than 4 carbon atoms, 1-20% of a compound effective to promote solvent action of the alcohol on hydraulic fluid deterioration products and selected from the group consisting of furfuryl alcohol, cyclohexanol, alpha terpinol, benzyl alcohol, thymol, cresol, 1,3,5 xylenol, phenol and catechol, and 1-5% of a compound effective to inhibit corrosion as Well as promote solvent action of said alcohol and selected from the group consisting of morpholine, methyl morpholine, ethyl morpholine, pipyridine, cyclohexylamine, dicyclohexylamine, benzothiazol, pyridine and aniline.
- a compound effective to promote solvent action of the alcohol on hydraulic fluid deterioration products selected from the group consisting of furfuryl alcohol, cyclohexanol, alpha
- a substantially anhydrous flushing fluid for hydraulic brake systems comprising at least 70% of a lower straight chain aliphatic alcohol containing less than 4 carbon atoms, 1-20% of a compound effective to promote solvent action of the alcohol on hydraulic fluid deterioration products and selected from the group consisting of furfuryl alcohol, cyclohexanol, alpha terpinol, benzyl alcohol, thymol, cresol, 1,3,5 xylenol, phenol and catechol, 15% of a compound effective to inhibit corrosion as well as promote solvent action of said alcohol and selected from the group consisting of morpholine, methyl morpholine, ethyl morpholine, pipyridine, cyclohexylamine, dicyclohexylamine, benzothiazol, pyridine and aniline, and not over 2% water.
Landscapes
- Lubricants (AREA)
Description
Patented May 3, 1949 UNITED STATES ATENT OFFICE FLUSHING FLUID FOR HYDRAULIC BRAKE SYSTEMS Chester M. White, Rochester, N. Y., assignor to Genesee Research Corporation, Rochester N. Y., a corporation of New York No Drawing. Application September 7, 1945, Serial No. 615,078
the most effective, and as explained hereinafter, it is desirable that these alcohols be substantially anhydrous. Methyl alcohol is the most desirable because of its low viscosity and specific gravity position useful in the flushing or purging of 5 and because of its eiflciency in penetration of deteriorated brake fluids from hydraulic brake gumined or oxidized castor oil. Low specific systems. More specifically, the invention congravity and viscosity make for added turbulence templates and provides a novel flushing fluid of of flow, under pressure bleeding of the hydraulic the foregoing character which not only possesses system, which results in enhanced washing action. markedly improved solvent action on brake fluid Efficiency in penetration aids in loosening or deterioration products tending to accumulate on softening the gum deposits. Ethyl alcohol as well the metal and rubber surfaces of the hydraulic as propyl alcohol may be substituted for the brake system but which also will not corrode the methyl alcohol but, in the case of ethyl alcohol, metal surfaces and cause the rubber parts to denaturants such as petroleum derivatives must swell. Likewise encompassed Within the scope of not be used because of the deteriorating tenthe invention is an improved process for flushing dencies hereinbefore referred to. Butyl alcohol is hydraulic brake systems employing the novel not preferred because of its known property of flushing fluid herein described and claimed. attacking rubber.
Most hydraulic brake fluids in use at the The aliphatic alcohol solvent is the major conpresent time comprise as their principal constitstituent of the improved flushing fluid and should uents castor oil and a solvent therefor. As is be present to the extent of at least about 70% well known, castor oil has a tendency to oxidize oi the composition. The other components of the and, in time, because of this tendency and also fluid are present in only comparatively minor perb'e ause 0 the tend n y o t e So ent &0 e DO- centages as will appear more particularly hereinrate, hydraulic brake fluids made up of castor oil after. if and solvent in n viscosity to s h n e a very important feature of the invention is the tent that the brake system becomes less sensidiscovery th t t v t action of 'lower tive and response to brake pedal act COIISB- aliphatic alcohol solvents on deterioration prodfl t y W l Because of this ucts of hydraulic brake fluids may be enhanced deierlqmilon, 1t 15 advlsable flush the system and markedly increased by incorporating with the ggg i ez f jge sig l z i e gi'zi gflfig g rgg alcohol a comparatively small amount of a ma- & e l terial herein described as a solvent-action pro- 2 i flf g f i ggig fi gi yg ggfi g t moter. The theory of action of this promoter is k Q .i All S a --.-n freeze alcohol or completely denatured alcohol, 22 3 2 5 i gs g zgg zgg hve en ldllCi r'h' .Te i
1 3 g ifif g g g sg i ifi n1 the1 sense thattthe final improved solvent ents which are detrimental to brake parts. For ion 15 ue merely. 0 the addl'tl Solvent action of each material. Stated dlfierently, the instance, gasoline and light mineral oils are in cm arafivel small amount f rom ter m common use as denaturants in completely de- 40. p y 9 p 0 e natured alcohol and as evaporation retarders in ployed causes an Increment of Increased solvlant antifreeze alcohol. These materials are most actlon of far greater magnitude i that Whlch undesirable in hydraulic brake system flushing could be caused any Solvent action possessed because of their very vigorous deteriorating acby the promoter Itself tion on rubber piston cups which manifests itself 40 Preferred solventactlon promofiers are cycltc in inordinate swelling alcohols which may be heterocycllc, carbocychc The non-corrosive and improved solvent-action or nymocarbfocychc' Typ1ca1 of these materla'ls flushing fluid of the present invention comprises, found opera/V6 for this purpose are furfuryl alco as its essential ingredients, (1) an organic solhol, cyclohexanol, alpha terpmol, benzyl alcohol vent, and (2) a so1vent acti0n promoter thymol, cresol (USP), 1,3,5 Xylenol, phenol (40 sira'oly, the composition also contains an anticorrosive agent and water.
.As the organic solvent, lower straight chain aliphatic alcohols containing less than four carbon atoms in the chain have been found to be M. P.), and catechol. Employed in the final flushing composition in proportions of from. 1 to 20%, these promoters not only perform their disclosed function but are by actual test sub-- stantially non-corrosive-to metals suchas alumi- 3 num alloys, brass and iron, as well as substantially non-deleterious toward rubber.
Since the aliphatic alcohol solvent of the present flushing fluid composition has in and of itself a slight tendency to cause corrosion of iron and brass parts, it has been found advisable to include in the composition a comparatively small amount (1 to 5%) of an anti-corrosive agent. Cyclic amines, themselves non-corrosive to metals in the dilution indicated, are suitable for this purpose. Typical cyclic amines are: morpholine, methyl morpholine, ethyl morpholine, pipyridine, cyclohexylamine, dicyclohexylamine, benzothiazol, pyridine and aniline.
Aside from performing the function of cutting down corrosive action of the aliphatic alcohol solvent, these cyclic amines, surprisingly enough, likewise exhibit to a certain extent the power of promoting solvent action of the alohol in the sense described hereinbefore. They therefore perform a dual function in the composition.
Completely anhydrous lower aliphatic alcohol solvents themselves react slowly with aluminum and, to overcome this corrosive effect, a small amount of water may be added to the composition. There is a limit, however, as to the amount of water which may be added since the presence of too much water will impair the rate of turbulence of flow and the efficiency of the composition in penetrating gummed or oxidized oils. The water content should be kept below approximately 5.0% for optimum results.
In general, and by way of recapitulation, the components of the improved flushing fluid are employed in the following approximate proportions:
Per cent Organic solvent 96.0 to 73.0 Solvent-action promoter 1.5 to 20.0 Anti-corrosive agent 1.5 to 5.0 Water 1.0 to 2.0
The following specific formulae have been found to be particularly eiiicient:
Example A Per cent Anhydrous methyl alcohol 96.0 Furfuryl alcohol 1.5 Morpholine 1.5 Water 1.0 Example B Anhydrous methyl alcohol 87.5 1,3,5 xylenol 10.0 Morpholine 1.5 Water 1.0 Example C Anhydrous ethyl alcohol 91.2 Morpholine 2.0 Cyclohexanol 2.0 Water 4.8 Emample D Anhydrous methyl alcohol 96.0 Cyclohexanol 1.5 Morpholine 1.5 Water 1.0 Example E Anhydrous methyl alcohol 96.0 Furfuryl alcohol 1.5 Pipyrldine 1.5 Water 1.0
It is to be understood. of course, that thefore- Per cent Anhydrous methyl alcohol 96.0 Furfuryl alcohol 1.5 Morpholine 1.5 Water 1.0
2. A flushing fluid for hydraulic brake systems comprising the following ingredients in approximately the proportions indicated:
Per cent Anhydrous methyl alcohol 87.5 1,3,5 xylenol 10.0 Morpholine 1.5 Water 1.0
3. A flushing fluid for hydraulic brake systems comprising the following ingredients in approximately the proportions indicated:
Per cent Anhydrous ethyl alcohol 91.2 Morpholine 2.0 Cyclohexanol 2.0 Water 4.8
4. A substantially anhydrous flushing fluid for hydraulic brake systems comprising at least 70% of a lower straight chain aliphatic alcohol containing less than 4 carbon atoms, 1-20% of a compound effective to promote solvent action of the alcohol on hydraulic fluid deterioration products and selected from the group consisting of furfuryl alcohol, cyclohexanol, alpha terpinol, benzyl alcohol, thymol, cresol, 1,3,5 xylenol, phenol and catechol, and 1-5% of a compound effective to inhibit corrosion as Well as promote solvent action of said alcohol and selected from the group consisting of morpholine, methyl morpholine, ethyl morpholine, pipyridine, cyclohexylamine, dicyclohexylamine, benzothiazol, pyridine and aniline.
5. A substantially anhydrous flushing fluid for hydraulic brake systems comprising at least 70% of a lower straight chain aliphatic alcohol containing less than 4 carbon atoms, 1-20% of a compound effective to promote solvent action of the alcohol on hydraulic fluid deterioration products and selected from the group consisting of furfuryl alcohol, cyclohexanol, alpha terpinol, benzyl alcohol, thymol, cresol, 1,3,5 xylenol, phenol and catechol, 15% of a compound effective to inhibit corrosion as well as promote solvent action of said alcohol and selected from the group consisting of morpholine, methyl morpholine, ethyl morpholine, pipyridine, cyclohexylamine, dicyclohexylamine, benzothiazol, pyridine and aniline, and not over 2% water.
CHESTER M. WHITE.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 1,903,287 Cox Apr. 4, 1933 2,171,491 Endres Aug. 29, 1939 2,179,999 Fegg Nov. 14, 1939 2,196,152 Kvalnes Apr. 2,1940 2,218,233 Fegg Oct. 15, 1940
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2469284A true US2469284A (en) | 1949-05-03 |
Family
ID=3436380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US2469284D Expired - Lifetime US2469284A (en) | Flushing fluid for hydraulic |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2469284A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2582138A (en) * | 1947-06-19 | 1952-01-08 | Nat Aluminate Corp | Corrosion inhibiting composition for steam systems |
| US2678920A (en) * | 1951-11-16 | 1954-05-18 | Gulf Research Development Co | Flushing compositions |
| US3179675A (en) * | 1963-06-18 | 1965-04-20 | Warner Lambert Pharmaceutical | Purification and stabilization of quingestrone |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1903287A (en) * | 1932-04-25 | 1933-04-04 | Carbide & Carbon Chem Corp | Corrosion inhibitor |
| US2171491A (en) * | 1936-07-30 | 1939-08-29 | Endres Rudolf | Brake and pressure fluid |
| US2179999A (en) * | 1937-10-23 | 1939-11-14 | Eastman Kodak Co | Denatured alcohol containing tetrahydrofurfuryl alcohol |
| US2196152A (en) * | 1937-12-14 | 1940-04-02 | Du Pont | Denaturant |
| US2218233A (en) * | 1937-10-23 | 1940-10-15 | Eastman Kodak Co | Denatured alcohol |
-
0
- US US2469284D patent/US2469284A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1903287A (en) * | 1932-04-25 | 1933-04-04 | Carbide & Carbon Chem Corp | Corrosion inhibitor |
| US2171491A (en) * | 1936-07-30 | 1939-08-29 | Endres Rudolf | Brake and pressure fluid |
| US2179999A (en) * | 1937-10-23 | 1939-11-14 | Eastman Kodak Co | Denatured alcohol containing tetrahydrofurfuryl alcohol |
| US2218233A (en) * | 1937-10-23 | 1940-10-15 | Eastman Kodak Co | Denatured alcohol |
| US2196152A (en) * | 1937-12-14 | 1940-04-02 | Du Pont | Denaturant |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2582138A (en) * | 1947-06-19 | 1952-01-08 | Nat Aluminate Corp | Corrosion inhibiting composition for steam systems |
| US2678920A (en) * | 1951-11-16 | 1954-05-18 | Gulf Research Development Co | Flushing compositions |
| US3179675A (en) * | 1963-06-18 | 1965-04-20 | Warner Lambert Pharmaceutical | Purification and stabilization of quingestrone |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5919394A (en) | Deicing composition and method | |
| US4404113A (en) | Cooling liquid with corrosion-inhibiting and cavitation-inhibiting additives | |
| US2126173A (en) | Noncorrosive antifreeze liquid | |
| JPS603433B2 (en) | Paint for preventing marine organisms from adhering | |
| US2469284A (en) | Flushing fluid for hydraulic | |
| US3094490A (en) | Inhibitor composition and method of inhibiting acid attack on metal in the acidizing f wells | |
| US2564753A (en) | Corrosion inhibitor composition | |
| US2803603A (en) | Heat exchange compositions | |
| JP2000313896A (en) | Water-soluble cutting fluid | |
| US2485150A (en) | Mineral oil compositions | |
| US3779930A (en) | Fluids | |
| US2400543A (en) | Method of treating waters, including boiler waters, and composition therefor | |
| WHITE | Other Classes | |
| US2164565A (en) | Rust inhibitor | |
| US2848416A (en) | Extreme pressure soluble oil | |
| US1918593A (en) | Lubricant | |
| US2564757A (en) | Corrosion inhibitor composition | |
| US2906635A (en) | Modified asphalt | |
| US3090757A (en) | Antifreeze composition | |
| US2164564A (en) | Corrosion inhibitor | |
| US2111990A (en) | Treatment of hydrocarbon oils | |
| RU2561277C1 (en) | Preservation composition for corrosion protection of ferrous and nonferrous metals | |
| US2182612A (en) | Product for use as nonrusting and noncorroding antifreezing mixtures | |
| DE1617209B2 (en) | Process for the production of a dry, finely divided detergent | |
| KR19980057304A (en) | Automotive brake fluid composition |