NO119746B - - Google Patents
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- Publication number
- NO119746B NO119746B NO159221A NO15922165A NO119746B NO 119746 B NO119746 B NO 119746B NO 159221 A NO159221 A NO 159221A NO 15922165 A NO15922165 A NO 15922165A NO 119746 B NO119746 B NO 119746B
- Authority
- NO
- Norway
- Prior art keywords
- phenthiazine
- percent
- chloro
- dimethylaminopropyl
- alkali
- Prior art date
Links
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 15
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 6
- WJFKNYWRSNBZNX-UHFFFAOYSA-N 10H-phenothiazine Chemical class C1=CC=C2NC3=CC=CC=C3SC2=C1 WJFKNYWRSNBZNX-UHFFFAOYSA-N 0.000 claims description 5
- 239000001530 fumaric acid Substances 0.000 claims description 4
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 150000008043 acidic salts Chemical class 0.000 claims 1
- 125000001931 aliphatic group Chemical group 0.000 claims 1
- 239000007795 chemical reaction product Substances 0.000 claims 1
- 239000000243 solution Substances 0.000 description 12
- 229940050411 fumarate Drugs 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 150000001450 anions Chemical class 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 239000001744 Sodium fumarate Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- MSJMDZAOKORVFC-SEPHDYHBSA-L disodium fumarate Chemical compound [Na+].[Na+].[O-]C(=O)\C=C\C([O-])=O MSJMDZAOKORVFC-SEPHDYHBSA-L 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- VZCYOOQTPOCHFL-OWOJBTEDSA-L fumarate(2-) Chemical class [O-]C(=O)\C=C\C([O-])=O VZCYOOQTPOCHFL-OWOJBTEDSA-L 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229940005573 sodium fumarate Drugs 0.000 description 1
- 235000019294 sodium fumarate Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- -1 unsaturated aliphatic dicarboxylic acids Chemical class 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/14—Dowel assembly ; Design or construction of reinforcements in the area of joints
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
- E04C5/04—Mats
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Description
Fremgangsmåte for fremstilling av fentiazinsalter. Process for the preparation of phenthiazine salts.
Nærværende oppfinnelse angår en fremgangsmåte for fremstilling av fentia-zinderivater bestemt for terapeutisk an-vendelse og angår spesielt 3-klor-10-(3-dimetylaminopropyl) -fentiazinsalter med evne til å danne vandige oppløsninger som er stabile overfor aktinisk lys. The present invention relates to a method for the production of phenthiazine derivatives intended for therapeutic use and relates in particular to 3-chloro-10-(3-dimethylaminopropyl)-phenthiazine salts with the ability to form aqueous solutions which are stable to actinic light.
3-klor-10- (3-dimetylaminopropyl) -f en-tiazin er en droge som i stor utstrekning brukes for mange formål innen klinisk medisin. For noen anvendelser kreves den i form av en vandig oppløsning, for hvilket formål hydrokloridet har vært foreslått. I praksis oppstår imidlertid vanskeligheter ved fremstillingen og bruken av slike opp-løsninger på grunn av innvirkningen av aktinisk lys, som fører med seg en hurtig farvning av oppløsningene ledsaget av for-minskning av aktiviteten og økning av 3-chloro-10-(3-dimethylaminopropyl)-phen-thiazine is a drug that is widely used for many purposes in clinical medicine. For some applications it is required in the form of an aqueous solution, for which purpose the hydrochloride has been proposed. In practice, however, difficulties arise in the preparation and use of such solutions due to the influence of actinic light, which brings with it a rapid coloring of the solutions accompanied by a decrease in activity and an increase in
giftigheten som følge av dannelsen av gif-tige avbyggingsprodukter. Disse vanskeligheter er blitt iakttatt også ved andre fen-tiazinforbindelser, og eksperimenter har vist at disse ulemper ikke direkte er av-hengige av anionets natur, da vandige opp-løsninger av forskjellige fentiazinforbin-delser, som inneholder det samme anion opptrer forskjellig når de utsettes for aktinisk lys. the toxicity resulting from the formation of toxic breakdown products. These difficulties have also been observed with other phenthiazine compounds, and experiments have shown that these disadvantages do not directly depend on the nature of the anion, as aqueous solutions of different phenthiazine compounds containing the same anion behave differently when exposed to for actinic light.
I overensstemmelse med nærværende oppfinnelse er det nå blitt erkjent at salter av 3-klor-10-( 3-dimetylaminopropyl)-f en-tiazin med olefinisk umettede alifatiske di-karboksylsyrer inneholdende ikke mindre enn fire og ikke mere enn fem kullstoff-atomer vil danne vandige oppløsninger som besidder langt større stabilitet over for lys enn de kjente vannoppløselige salter som hydrokloridet og kan fremstilles og brukes som sådanne i klinisk medisin uten å gi anledning til vanskelighetene foran angitt. Det vilde på forhånd vært umulig å forutsi dette resultat. In accordance with the present invention, it has now been recognized that salts of 3-chloro-10-(3-dimethylaminopropyl)-phen-thiazine with olefinically unsaturated aliphatic dicarboxylic acids containing not less than four and not more than five carbon atoms will form aqueous solutions which possess far greater stability to light than the known water-soluble salts such as the hydrochloride and can be prepared and used as such in clinical medicine without giving rise to the difficulties indicated above. It would have been impossible to predict this result in advance.
Disse salter fremstilles ved innvirkning av 3-klor-10-(3-dimetylaminopropyl-fenti-azin på en dikarboksylsyre som foran angitt. These salts are prepared by the action of 3-chloro-10-(3-dimethylaminopropyl-phentazine) on a dicarboxylic acid as indicated above.
Innenfor området av nærværende oppfinnelse faller oppløsninger for bruk i klinisk medisin bestående av vandige oppløs-ninger innholdende ett eller flere av de forannevnte salter. Solutions for use in clinical medicine consisting of aqueous solutions containing one or more of the aforementioned salts fall within the scope of the present invention.
Av syrene, hvis salter med 3-klor-10-(3-dimetylaminopropyl)-fentiazin omfattes av nærværende oppfinnelse, er fumarsyre fore-trukket ikke bare på grunn av de dannede fumaretenes fremragende stabilitet overfor lys men også på grunn av dens lave pris og den lave giftighet av fumarationet. Imidlertid kan andre syrer av den foran defi-nerte art anvendes, som malein-, citracon-, niesacon-, itacon- og glutaconsyrene. Of the acids whose salts with 3-chloro-10-(3-dimethylaminopropyl)-phenthiazine are encompassed by the present invention, fumaric acid is preferred not only because of the excellent light stability of the fumarates formed but also because of its low price and the low toxicity of the fumarate. However, other acids of the kind defined above can be used, such as maleic, citraconic, niesaconic, itaconic and glutaconic acids.
Hvor syresaltene etter oppfinnelsen bare er lite oppløselige i vann, er det fore-trukket å omdanne dem til mere oppløselige nøytrale, blandede eller dobbelte salter ved behandling med alkali. Det er klart at fullstendig omdanning av en gitt mengde slike syresalter ikke er vesentlig. For eksempel, det sure fumarat er forholdsvis lite opplø-selig i vann og foretrekkes i det minste delvis overført til dobbeltfumaratet av natrium og 3-klor-10-(3-dimetylaminopropyl)-f entiazin ved tilsetning av f. eks. kaustisk soda eller natriumbikarbonat. En molar alkalimengde på minst 67 pst. er nødvendig for å gi et produkt tilstrekkelig oppløselig i vann for optimalt bruk. Molare alkaliekvivalenter i området fra 67 pst. til 100 pst., fortrinsvis ca. 75 pst., brukes der-for i praksis. Ved en alternativ fremgangsmåte oppløses egnede mengder av 3-klor-10-(3-dimetylaminopropyl)-fentiazin, fumarsyre og natriumbikarbonat i vann. Where the acid salts according to the invention are only slightly soluble in water, it is preferred to convert them into more soluble neutral, mixed or double salts by treatment with alkali. It is clear that complete conversion of a given amount of such acid salts is not essential. For example, the acidic fumarate is relatively poorly soluble in water and is preferably at least partially transferred to the double fumarate of sodium and 3-chloro-10-(3-dimethylaminopropyl)-phenthiazin by adding e.g. caustic soda or sodium bicarbonate. A molar amount of alkali of at least 67 percent is necessary to give a product sufficiently soluble in water for optimal use. Molar alkali equivalents in the range from 67% to 100%, preferably approx. 75 per cent, is used there-for in practice. In an alternative method, suitable amounts of 3-chloro-10-(3-dimethylaminopropyl)-phenthiazine, fumaric acid and sodium bicarbonate are dissolved in water.
Ved å følge forannevnte fremgangs-måter oppnås oppløsninger, hvis pH er, eller ved tilsetning av alkali som kaustisk soda lett kan justeres til mellom 4,7 og 6,5 og fortrinsvis til ca. 5,0. Konsentrasjoner på mellom 0,1 og 5 vektsprosent kan oppnås og er .adekvate. Det er ingen fordel å frem-stille oppløsninger med høyere konsentrasjoner fordi disse ikke tolereres så godt ved injeksjon. Disse oppløsninger er stabile overfor lys og også varme, hvilket gjør det mulig å sterilisere dem. De gjør isotoné på konvensjonell måte, f. eks. fumaratoppløs-ninger. ved tilsetning av natriumfumarat. By following the aforementioned procedures, solutions are obtained whose pH is, or by adding alkali such as caustic soda, can easily be adjusted to between 4.7 and 6.5 and preferably to approx. 5.0. Concentrations of between 0.1 and 5% by weight can be achieved and are adequate. There is no advantage in preparing solutions with higher concentrations because these are not well tolerated by injection. These solutions are stable to light and also to heat, which makes it possible to sterilize them. They do isotony in a conventional way, e.g. fumarate solutions. by adding sodium fumarate.
Det følgende eksempel viser hvordan oppfinnelsne kan utføres i praksis. The following example shows how the invention can be carried out in practice.
Eksempel: En varm oppløsning av 25,5 g 3-klor-10-(3-dimetyl-aminopropyl)-fentiazin i 30 ccm etanol tilsettes en varm oppløsning av 9,3 g fumarsyre i 220 ccm etanol. Etter av-kjøling filtreres krystallene og vaskes med etanol og tørkes. 31 g av det sure fumarat — et hvitt krystallinsk pulver — oppnås på denne måte. Smeltepunkt (Kofler): 180— 181° C. Example: A warm solution of 25.5 g of 3-chloro-10-(3-dimethyl-aminopropyl)-phenthiazine in 30 ccm of ethanol is added to a warm solution of 9.3 g of fumaric acid in 220 ccm of ethanol. After cooling, the crystals are filtered and washed with ethanol and dried. 31 g of the acid fumarate — a white crystalline powder — is obtained in this way. Melting point (Kofler): 180— 181° C.
3,41 g av forannevnte sure fumarat tilsettes derpå en oppløsning av 0,50 g na- 3.41 g of the aforementioned acid fumarate is then added to a solution of 0.50 g of
triumbikarbonat i 70 ccm vann. Blandin-gen oppvarmes under omrøring til 50—60° C inntil oppløsningen er fullstendig og kull-dioksyd ikke lenger utvikles. Oppløsningen kjøles derpå til romtemperatur og fortyn-nes til 100 ccm med destillert vann. Det oppnås en 2,5 pst. vandig oppløsning av dobbeltfumaratet av natrium og 3-klor-10-(3-dimetylaminopropyl)-fentiazin med en pH på 5. triumbicarbonate in 70 ccm of water. The mixture is heated with stirring to 50-60° C until the solution is complete and carbon dioxide is no longer evolved. The solution is then cooled to room temperature and diluted to 100 cc with distilled water. A 2.5% aqueous solution of the double fumarate of sodium and 3-chloro-10-(3-dimethylaminopropyl)-phenthiazine with a pH of 5 is obtained.
Claims (4)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB0077971 | 1964-08-05 | ||
DEB0079426 | 1964-11-21 | ||
DEB0081498 | 1965-04-17 | ||
DEB0082181 | 1965-05-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
NO119746B true NO119746B (en) | 1970-06-29 |
Family
ID=27436632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO159221A NO119746B (en) | 1964-08-05 | 1965-08-04 |
Country Status (8)
Country | Link |
---|---|
US (1) | US3437017A (en) |
AT (1) | AT281897B (en) |
BE (1) | BE667595A (en) |
CH (1) | CH459282A (en) |
GB (1) | GB1093356A (en) |
LU (1) | LU49219A1 (en) |
NL (1) | NL142742B (en) |
NO (1) | NO119746B (en) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT298745B (en) * | 1967-10-17 | 1972-05-25 | Dyckerhoff & Widmann Ag Dycker | Method for producing cracks in components fromMethod for producing cracks in components made of reinforced concrete, in particular in road pavements, in reinforced concrete, in particular in road pavements |
GB1171253A (en) * | 1967-10-27 | 1969-11-19 | Alcoa Of Great Britain Ltd | Improvements in or relating to Structural Assemblies |
NL7004773A (en) * | 1970-04-03 | 1971-10-05 | ||
US3972640A (en) * | 1974-09-16 | 1976-08-03 | Miller Raphael W | Highway joint with spring torsion bar |
US4449844A (en) * | 1981-05-11 | 1984-05-22 | Larsen Torbjorn J | Dowel for pavement joints |
DE3316148C2 (en) * | 1983-05-03 | 1986-08-07 | Robert Kieserling Asphalt- und Betonbau (GmbH & Co), 2000 Hamburg | Process for the production of industrial floors provided with expansion joints |
DE4328831A1 (en) * | 1993-08-27 | 1994-04-21 | Vonderlin Juergen Dipl Ing Fh | Transverse force transfer bracket - is formed as incorporated component of coupled, round steel rods and coated and having lateral abutments |
CN1088135C (en) * | 1994-04-29 | 2002-07-24 | 李然 | Rib-free prestressed pavement |
US5674028A (en) * | 1995-07-28 | 1997-10-07 | Norin; Kenton Neal | Doweled construction joint and method of forming same |
ES2149103B1 (en) * | 1998-07-07 | 2001-06-01 | Vazquez Ruiz Del Arbol Jose Ra | ARTICULATED IMBRICATION PROCEDURE BETWEEN CONCRETE Slabs IN SITU. |
US6517277B2 (en) * | 1998-09-22 | 2003-02-11 | Kansas State University Research Foundation | Expansion and crack joint coupler |
US6210070B1 (en) * | 1999-04-14 | 2001-04-03 | Ron D. Shaw | Concrete dowel slip tube with clip |
US6389774B1 (en) * | 2001-02-13 | 2002-05-21 | Gregory Howard Carpenter | Pipe dowel for concrete slab construction |
US20070134063A1 (en) * | 2005-12-14 | 2007-06-14 | Shaw And Sons, Inc. | Dowel device with closed end speed cover |
US20100154320A1 (en) * | 2008-12-23 | 2010-06-24 | Chevron U.S.A. Inc. | Composite concrete roof for an outer lng containment tank and method of making the same |
AR090164A1 (en) * | 2012-02-27 | 2014-10-22 | Hengelhoef Concrete Joints Mfg Nv | EXPANSION MEETING |
US20150121797A1 (en) * | 2013-11-06 | 2015-05-07 | Chad Brown | Concrete anchor |
US20150197898A1 (en) | 2014-01-15 | 2015-07-16 | Shaw & Sons, Inc. | Concrete dowel system |
MX2016014700A (en) * | 2014-05-12 | 2017-02-23 | Permaban Ltd | Arris protection joint. |
US9540775B2 (en) * | 2014-10-01 | 2017-01-10 | Power Brace LLC | Composite hoop tie for concrete |
US9340969B1 (en) | 2014-11-13 | 2016-05-17 | Shaw & Sons, Inc. | Crush zone dowel tube |
KR101605512B1 (en) * | 2015-07-01 | 2016-03-29 | 경희대학교 산학협력단 | Construction of continuously reinforced concrete pavements |
US20170096810A1 (en) | 2015-10-05 | 2017-04-06 | Shaw & Sons, Inc. | Concrete dowel placement system and method of making the same |
US20190024367A1 (en) | 2015-10-05 | 2019-01-24 | Shaw & Sons, Inc. | Concrete dowel placement system and method of making the same |
US10870985B2 (en) * | 2017-05-03 | 2020-12-22 | Illinois Tool Works Inc. | Concrete slab load transfer and connection apparatus and method of employing same |
US10443194B2 (en) * | 2018-02-09 | 2019-10-15 | McTech Group Inc. | Field-assembly concrete dowel basket |
US11203840B2 (en) | 2019-06-25 | 2021-12-21 | Illinois Tool Works Inc. | Method and apparatus for two-lift concrete flatwork placement |
US11578491B2 (en) | 2020-02-07 | 2023-02-14 | Shaw Craftsmen Concrete, Llc | Topping slab installation methodology |
CN116005528A (en) * | 2022-12-29 | 2023-04-25 | 徐宇翔 | Road engineering crack reinforced structure |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3156169A (en) * | 1964-11-10 | Finsterwalder | ||
US2015340A (en) * | 1926-11-29 | 1935-09-24 | Carey Philip Mfg Co | Reenforced concrete road construction |
US1996153A (en) * | 1929-12-19 | 1935-04-02 | John N Heltzel | Road building apparatus |
US2106095A (en) * | 1935-04-10 | 1938-01-18 | Heltzel Joseph William | Expansion joint |
US2080124A (en) * | 1935-05-17 | 1937-05-11 | Laclede Steel Company | Reenforced concrete structure |
US2060326A (en) * | 1935-07-27 | 1936-11-10 | Lampert & Lampert | Longitudinal joint for concrete pavements |
US2116697A (en) * | 1936-12-10 | 1938-05-10 | Henry A Taubensee | Joint for concrete slabs |
US2309538A (en) * | 1941-07-19 | 1943-01-26 | Robert R Robertson | Dowel bar contraction joint |
US2806414A (en) * | 1953-11-09 | 1957-09-17 | Edwin R Woodman | Forming strip for pavement construction |
US3022713A (en) * | 1954-11-26 | 1962-02-27 | Bengt F Friberg | Prestressed concrete structures |
US3045566A (en) * | 1959-11-24 | 1962-07-24 | Roy L Houck | Machine for grooving road paving to receive expansion strips |
-
1965
- 1965-07-26 AT AT686365A patent/AT281897B/en not_active IP Right Cessation
- 1965-07-28 CH CH1058365A patent/CH459282A/en unknown
- 1965-07-29 BE BE667595D patent/BE667595A/xx unknown
- 1965-07-30 LU LU49219A patent/LU49219A1/xx unknown
- 1965-08-03 US US477672A patent/US3437017A/en not_active Expired - Lifetime
- 1965-08-04 NL NL656510144A patent/NL142742B/en unknown
- 1965-08-04 GB GB33318/65A patent/GB1093356A/en not_active Expired
- 1965-08-04 NO NO159221A patent/NO119746B/no unknown
Also Published As
Publication number | Publication date |
---|---|
CH459282A (en) | 1968-07-15 |
US3437017A (en) | 1969-04-08 |
LU49219A1 (en) | 1965-09-30 |
AT281897B (en) | 1970-06-10 |
BE667595A (en) | 1965-11-16 |
NL6510144A (en) | 1966-02-07 |
NL142742B (en) | 1974-07-15 |
GB1093356A (en) | 1967-11-29 |
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