BE578504A - - Google Patents
Info
- Publication number
- BE578504A BE578504A BE578504DA BE578504A BE 578504 A BE578504 A BE 578504A BE 578504D A BE578504D A BE 578504DA BE 578504 A BE578504 A BE 578504A
- Authority
- BE
- Belgium
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D405/00—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom
- C07D405/02—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings
- C07D405/12—Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
- C07D317/12—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
- C07D317/14—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D317/18—Radicals substituted by singly bound oxygen or sulfur atoms
- C07D317/20—Free hydroxyl or mercaptan
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
- C07D317/14—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D317/18—Radicals substituted by singly bound oxygen or sulfur atoms
- C07D317/22—Radicals substituted by singly bound oxygen or sulfur atoms etherified
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
- C07D317/14—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D317/18—Radicals substituted by singly bound oxygen or sulfur atoms
- C07D317/24—Radicals substituted by singly bound oxygen or sulfur atoms esterified
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
- C07D317/14—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D317/30—Radicals substituted by carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D317/00—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D317/08—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3
- C07D317/10—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings
- C07D317/32—Heterocyclic compounds containing five-membered rings having two oxygen atoms as the only ring hetero atoms having the hetero atoms in positions 1 and 3 not condensed with other rings with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D407/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00
- C07D407/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings
- C07D407/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings linked by a chain containing hetero atoms as chain links
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F5/00—Compounds containing elements of Groups 3 or 13 of the Periodic Table
- C07F5/06—Aluminium compounds
- C07F5/069—Aluminium compounds without C-aluminium linkages
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/003—Compounds containing elements of Groups 4 or 14 of the Periodic Table without C-Metal linkages
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0834—Compounds having one or more O-Si linkage
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/06—Phosphorus compounds without P—C bonds
- C07F9/08—Esters of oxyacids of phosphorus
- C07F9/141—Esters of phosphorous acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
- C07F9/40—Esters thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
- C08F20/62—Monocarboxylic acids having ten or more carbon atoms; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F24/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a heterocyclic ring containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/01—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to unsaturated polyesters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B43/00—Preparation of azo dyes from other azo compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Paints Or Removers (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68302157A | 1957-09-10 | 1957-09-10 | |
US73007058A | 1958-04-22 | 1958-04-22 | |
US737507A US3010918A (en) | 1957-09-10 | 1958-05-26 | Chemical compounds |
US737506A US3010923A (en) | 1957-09-10 | 1958-05-26 | Chemical compounds |
Publications (1)
Publication Number | Publication Date |
---|---|
BE578504A true BE578504A (fr) | 1900-01-01 |
Family
ID=27505396
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE571044D BE571044A (fr) | 1957-09-10 | ||
BE578504D BE578504A (fr) | 1957-09-10 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE571044D BE571044A (fr) | 1957-09-10 |
Country Status (6)
Country | Link |
---|---|
US (2) | US3010923A (fr) |
BE (2) | BE578504A (fr) |
DE (2) | DE1418534A1 (fr) |
FR (1) | FR1222826A (fr) |
GB (1) | GB899065A (fr) |
NL (3) | NL231223A (fr) |
Families Citing this family (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3398106A (en) * | 1960-04-26 | 1968-08-20 | Union Carbide Corp | Tin-containing catalyst for isocyanate reactions |
US3203932A (en) * | 1961-03-10 | 1965-08-31 | Wyandotte Chemicals Corp | Metallo-organic catalyzed one-shot process for preparing urethaneurea elastomers |
US3255210A (en) * | 1961-03-16 | 1966-06-07 | Du Pont | Process for aerating cyclic acetals |
US3301693A (en) * | 1961-03-16 | 1967-01-31 | Du Pont | Cyclic acetal coating compositions |
US3208993A (en) * | 1961-05-15 | 1965-09-28 | Shell Oil Co | Cyclic acetal polyallylidene oligosaccharides |
US3197484A (en) * | 1962-01-12 | 1965-07-27 | Du Pont | 2-hydroperoxides of 2-alkenyl dioxolanes and meta dioxanes |
BE633049A (fr) * | 1962-06-06 | |||
US3225014A (en) * | 1962-07-09 | 1965-12-21 | Scott Paper Co | Ethylene dicarboxylic esters of 1,2 alkane ketals |
US3225015A (en) * | 1962-07-09 | 1965-12-21 | Scott Paper Co | Itaconic acid esters of 1,2 alkane ketals |
US3250788A (en) * | 1962-08-01 | 1966-05-10 | Union Carbide Corp | Process for making 4-(4-hydroxybutyl)-2-vinyl-1, 3-dioxolane |
US3232894A (en) * | 1962-09-18 | 1966-02-01 | Du Pont | Coating compositions containing a tertiary amine and a metallic drier |
GB1002664A (en) * | 1963-07-23 | 1965-08-25 | Ici Ltd | Unsaturated esters and polymers thereof |
US3340275A (en) * | 1963-07-25 | 1967-09-05 | Du Pont | Perhalo containing air-drying monomers |
US3373160A (en) * | 1963-10-01 | 1968-03-12 | Du Pont | Process for oxygenating solid cyclic acetals and products obtained thereby |
US3407156A (en) * | 1964-06-03 | 1968-10-22 | Du Pont | Weatherable transparent coating composition for wood substrates |
US3412067A (en) * | 1964-10-01 | 1968-11-19 | Du Pont | Curable compositions |
US3325406A (en) * | 1964-12-28 | 1967-06-13 | Standard Oil Co | Copolymers of isobutene and acrolein ethylene dithioacetal |
US3468857A (en) * | 1965-10-04 | 1969-09-23 | Ashland Oil Inc | Thermosetting polymers of unsaturated acetals |
US3320195A (en) * | 1966-09-15 | 1967-05-16 | Du Pont | Coating compositions containing a tetrasubstituted guanidine |
US3475512A (en) * | 1967-03-30 | 1969-10-28 | Ppg Industries Inc | Organosilicon-modified polyesters containing unsaturated aldehydes |
US3441423A (en) * | 1967-12-14 | 1969-04-29 | Du Pont | Coating compositions containing polyunsaturated bis-1,3-dioxolanes |
US3893985A (en) * | 1971-05-25 | 1975-07-08 | Union Carbide Corp | Copolymers of cyclic vinyl ethers and cyclic acetals |
US3911192A (en) * | 1973-10-01 | 1975-10-07 | Itt | Coated wire products |
US4157421A (en) * | 1976-09-07 | 1979-06-05 | Thiokol Corporation | Photocurable compositions comprising a polythiol and a polyene derived from a vinyl acetal |
US4182848A (en) * | 1976-09-07 | 1980-01-08 | Thiokol Corporation | Photocurable compositions |
EP0080529B1 (fr) * | 1981-12-01 | 1987-11-19 | The Dow Chemical Company | Dérivés de 1,3-dioxolane et de 1,3-dioxanne 2-cyano substitués |
IT1190436B (it) * | 1985-12-13 | 1988-02-16 | Zambon Spa | Processo stereoselettivo per la preparazione di composti carbonilici alfa,beta-disostituiti otticamente attivi |
US5334615A (en) * | 1992-12-17 | 1994-08-02 | Walles Wilhelm E | Oil with bactericidal and virucidal properties |
US5932667A (en) * | 1994-01-25 | 1999-08-03 | E. I. Du Pont De Nemours And Company | Reactive adducts of vinyldioxo compounds |
EP0741718A1 (fr) * | 1994-01-25 | 1996-11-13 | E.I. Du Pont De Nemours And Company | Procede ameliore pour la synthese de composes vinyldioxo |
DE69739374D1 (de) * | 1996-09-23 | 2009-06-04 | Foster Miller Inc | Beschichtungszusammensetzungen basierend auf polyurethan/vinyldioxolan |
US6300457B1 (en) | 1996-09-23 | 2001-10-09 | Foster Miller, Inc. | Polyester/polyurethane vinyl dioxolane based coating compositions |
US5977269A (en) * | 1997-10-30 | 1999-11-02 | Foster-Miller, Inc. | Polyester/vinyl dioxolane based coating compositions |
US6150429A (en) * | 1997-10-30 | 2000-11-21 | Foster-Miller, Inc. | Polyester/vinyl dioxolane based coating compositions |
US7378457B2 (en) * | 2000-02-15 | 2008-05-27 | Foster Miller, Inc. | No VOC radiation curable resin compositions with enhanced flexibility |
WO2001060870A1 (fr) * | 2000-02-15 | 2001-08-23 | Foster Miller, Inc. | Compositions de resine durcissables par rayonnement sans constituant organique volatil |
EP1309630A4 (fr) * | 2000-07-25 | 2005-01-12 | Foster Miller Inc | Compositions enzymatiques de resines reticulables degradables |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1860098A (en) * | 1931-07-20 | 1932-05-24 | Selden Co | Synthetic resin |
US2401776A (en) * | 1942-01-05 | 1946-06-11 | Du Pont | Resinous reaction products of polyhydric alcohols and alpha-methylene aldehydes |
DE858406C (de) * | 1943-01-24 | 1952-12-08 | Degussa | Verfahren zur Herstellung von ungesaettigten cyclischen Acetalen |
US2441470A (en) * | 1944-01-31 | 1948-05-11 | Monsanto Chemicals | Process for insolubilizing hydrolyzed polyvinyl acetate |
US2578861A (en) * | 1949-07-26 | 1951-12-18 | American Cyanamid Co | Unsaturated dioxolane compounds, products prepared therefrom, and methods of preparation |
US2660563A (en) * | 1949-07-28 | 1953-11-24 | Standard Oil Dev Co | Mineral oil containing substituted polyolefins |
US2729650A (en) * | 1950-03-31 | 1956-01-03 | British Petroleum Co | Production of dialdehydes and derivatives thereof |
GB717418A (en) * | 1950-07-18 | 1954-10-27 | Dynamit Nobel Ag | A process for the production of unsaturated cyclic diand poly-acetals |
US2902476A (en) * | 1952-12-17 | 1959-09-01 | Hercules Powder Co Ltd | Process for making diallylidene pentaerythritol copolymers |
NL86076C (fr) * | 1953-09-05 | |||
FR1111189A (fr) * | 1954-06-01 | 1956-02-23 | Pista | Digesteurs de boues organiques |
US2895945A (en) * | 1956-07-30 | 1959-07-21 | Shell Dev | Aldehyde polyerythritol polymers |
-
0
- NL NL125833D patent/NL125833C/xx active
- NL NL231224D patent/NL231224A/xx unknown
- BE BE571044D patent/BE571044A/xx unknown
- BE BE578504D patent/BE578504A/xx unknown
- NL NL231223D patent/NL231223A/xx unknown
-
1958
- 1958-05-26 US US737506A patent/US3010923A/en not_active Expired - Lifetime
- 1958-05-26 US US737507A patent/US3010918A/en not_active Expired - Lifetime
- 1958-09-01 GB GB28037/58A patent/GB899065A/en not_active Expired
- 1958-09-10 DE DE19581418534 patent/DE1418534A1/de active Pending
- 1958-09-10 DE DE19581494492 patent/DE1494492A1/de active Pending
-
1959
- 1959-01-28 FR FR785153A patent/FR1222826A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL231224A (fr) | 1900-01-01 |
DE1494492A1 (de) | 1969-01-23 |
BE571044A (fr) | 1900-01-01 |
US3010923A (en) | 1961-11-28 |
NL125833C (fr) | 1900-01-01 |
US3010918A (en) | 1961-11-28 |
FR1222826A (fr) | 1960-06-13 |
NL231223A (fr) | 1900-01-01 |
GB899065A (en) | 1962-06-20 |
DE1418534A1 (de) | 1969-12-04 |