DE2149970C3 - Verfahren zur Herstellung eines modifizierten Aminoplasten und seine Verwendung - Google Patents
Verfahren zur Herstellung eines modifizierten Aminoplasten und seine VerwendungInfo
- Publication number
- DE2149970C3 DE2149970C3 DE2149970A DE2149970A DE2149970C3 DE 2149970 C3 DE2149970 C3 DE 2149970C3 DE 2149970 A DE2149970 A DE 2149970A DE 2149970 A DE2149970 A DE 2149970A DE 2149970 C3 DE2149970 C3 DE 2149970C3
- Authority
- DE
- Germany
- Prior art keywords
- methylenebisformamide
- solution
- water
- formaldehyde
- coated
- 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
Links
- 229920003180 amino resin Polymers 0.000 title claims description 21
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title description 5
- QPJQPYQZFKFTHG-UHFFFAOYSA-N n-(formamidomethyl)formamide Chemical compound O=CNCNC=O QPJQPYQZFKFTHG-UHFFFAOYSA-N 0.000 claims description 32
- 229920005989 resin Polymers 0.000 claims description 20
- 239000011347 resin Substances 0.000 claims description 20
- 239000002023 wood Substances 0.000 claims description 17
- 229920000877 Melamine resin Polymers 0.000 claims description 16
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 15
- 238000009833 condensation Methods 0.000 claims description 14
- 230000005494 condensation Effects 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 150000003839 salts Chemical class 0.000 claims description 5
- 235000000346 sugar Nutrition 0.000 claims description 5
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 3
- 125000003118 aryl group Chemical class 0.000 claims description 3
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 2
- LNOPIUAQISRISI-UHFFFAOYSA-N n'-hydroxy-2-propan-2-ylsulfonylethanimidamide Chemical class CC(C)S(=O)(=O)CC(N)=NO LNOPIUAQISRISI-UHFFFAOYSA-N 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 48
- 239000000243 solution Substances 0.000 description 46
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 30
- 239000000123 paper Substances 0.000 description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 28
- 239000007864 aqueous solution Substances 0.000 description 15
- 239000011093 chipboard Substances 0.000 description 12
- 238000005336 cracking Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010790 dilution Methods 0.000 description 6
- 239000012895 dilution Substances 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 238000005496 tempering Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 150000008163 sugars Chemical class 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- PMUNIMVZCACZBB-UHFFFAOYSA-N 2-hydroxyethylazanium;chloride Chemical compound Cl.NCCO PMUNIMVZCACZBB-UHFFFAOYSA-N 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- 229940073579 ethanolamine hydrochloride Drugs 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N monoethanolamine hydrochloride Natural products NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920001568 phenolic resin Polymers 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 239000004251 Ammonium lactate Substances 0.000 description 1
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 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
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- IENXJNLJEDMNTE-UHFFFAOYSA-N acetic acid;ethane-1,2-diamine Chemical compound CC(O)=O.NCCN IENXJNLJEDMNTE-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 229940059265 ammonium lactate Drugs 0.000 description 1
- 235000019286 ammonium lactate Nutrition 0.000 description 1
- SOIFLUNRINLCBN-UHFFFAOYSA-N ammonium thiocyanate Chemical compound [NH4+].[S-]C#N SOIFLUNRINLCBN-UHFFFAOYSA-N 0.000 description 1
- -1 aromatic sulfonamides Chemical class 0.000 description 1
- RZOBLYBZQXQGFY-HSHFZTNMSA-N azanium;(2r)-2-hydroxypropanoate Chemical compound [NH4+].C[C@@H](O)C([O-])=O RZOBLYBZQXQGFY-HSHFZTNMSA-N 0.000 description 1
- 150000001728 carbonyl compounds Chemical class 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- ZSFDBVJMDCMTBM-UHFFFAOYSA-N ethane-1,2-diamine;phosphoric acid Chemical compound NCCN.OP(O)(O)=O ZSFDBVJMDCMTBM-UHFFFAOYSA-N 0.000 description 1
- 125000001841 imino group Chemical group [H]N=* 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 229920002866 paraformaldehyde Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 235000020354 squash Nutrition 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical class NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 description 1
- 229940124530 sulfonamide Drugs 0.000 description 1
- 150000003456 sulfonamides Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08G12/043—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with at least two compounds covered by more than one of the groups C08G12/06 - C08G12/24
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B21/06—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/10—Next to a fibrous or filamentary layer
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
- C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08G12/34—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds and acyclic or carbocyclic compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/47—Condensation polymers of aldehydes or ketones
- D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/028—Paper layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Laminated Bodies (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Priority Applications (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE789804D BE789804A (fr) | 1971-10-07 | Aminoplaste destine au revetement de materiaux a base de bois et de stratifies ainsi que procede de preparation de cet aminoplaste | |
| DE2149970A DE2149970C3 (de) | 1971-10-07 | 1971-10-07 | Verfahren zur Herstellung eines modifizierten Aminoplasten und seine Verwendung |
| NL7213238A NL7213238A (enExample) | 1971-10-07 | 1972-09-29 | |
| GB4623672A GB1366256A (en) | 1971-10-07 | 1972-10-06 | Aminoplast resin and coated or laminated article of manufacture |
| IT30194/72A IT968712B (it) | 1971-10-07 | 1972-10-06 | Amminoplasto procedimento per la sua preparazione e suo impiego per la preparazione di materiali da costruzione di legno rivestiti oppure di sostanze di rivestimento |
| ES407394A ES407394A1 (es) | 1971-10-07 | 1972-10-06 | Procedimiento para la obtencion de un aminoplasto modifica-do. |
| CH1462472A CH575440A5 (enExample) | 1971-10-07 | 1972-10-06 | |
| CA153,420A CA970493A (en) | 1971-10-07 | 1972-10-06 | Modified aminoplast resin and coated or laminated article of manufacture |
| SE7212927A SE404193B (sv) | 1971-10-07 | 1972-10-06 | Modifierad melamin-formaldehydkondensationsprodukt innehallande metylenbisformamid, samt forfarande for framstellning derav |
| AT858072A AT329271B (de) | 1971-10-07 | 1972-10-06 | Verfahren zur herstellung eines modifizierten aminoplasten |
| FR7235671A FR2156174B1 (enExample) | 1971-10-07 | 1972-10-09 | |
| US43352574 US3914523A (en) | 1971-10-07 | 1974-01-15 | Aminoplast resin modified with methylene bisformamide and laminated thermosetting decorative sheets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2149970A DE2149970C3 (de) | 1971-10-07 | 1971-10-07 | Verfahren zur Herstellung eines modifizierten Aminoplasten und seine Verwendung |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2149970A1 DE2149970A1 (de) | 1973-04-12 |
| DE2149970B2 DE2149970B2 (de) | 1978-11-09 |
| DE2149970C3 true DE2149970C3 (de) | 1983-12-29 |
Family
ID=5821666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2149970A Expired DE2149970C3 (de) | 1971-10-07 | 1971-10-07 | Verfahren zur Herstellung eines modifizierten Aminoplasten und seine Verwendung |
Country Status (11)
| Country | Link |
|---|---|
| AT (1) | AT329271B (enExample) |
| BE (1) | BE789804A (enExample) |
| CA (1) | CA970493A (enExample) |
| CH (1) | CH575440A5 (enExample) |
| DE (1) | DE2149970C3 (enExample) |
| ES (1) | ES407394A1 (enExample) |
| FR (1) | FR2156174B1 (enExample) |
| GB (1) | GB1366256A (enExample) |
| IT (1) | IT968712B (enExample) |
| NL (1) | NL7213238A (enExample) |
| SE (1) | SE404193B (enExample) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU76197A1 (enExample) | 1976-11-12 | 1978-07-10 | ||
| DE2725078C3 (de) * | 1977-06-03 | 1981-10-01 | Th. Goldschmidt Ag, 4300 Essen | Verwendung von 5,5-Dimethyl-hydantoin als Modifizierungsmittel für Melamin-Formaldehyd-Vorkondensate |
| GB2136008B (en) * | 1983-02-07 | 1986-06-25 | Enigma Nv | Formaldehyde binder |
| DE3430248A1 (de) * | 1984-08-17 | 1986-02-27 | Basf Ag, 6700 Ludwigshafen | Verfahren zur herstellung von lagerstabilen, waessrigen melamin-formaldehydharz-loesungen |
| GB2170208B (en) * | 1985-01-29 | 1988-06-22 | Enigma Nv | A formaldehyde binder |
| GB2172894B (en) * | 1985-03-29 | 1989-05-10 | Muirhead Data Communications L | Melamine/formaldehyde and urea/formaldehyde resinous materials |
| DE4124688C2 (de) * | 1991-07-22 | 1994-04-28 | Dainippon Ink & Chemicals | Vernetzende Mischungen aus polyfunktionellen Formamiden und Melamin/Formaldehyd-Harzen und ihre Verwendung |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD37328A (enExample) * | ||||
| DE1694866C3 (de) * | 1967-11-16 | 1975-09-18 | Ruetgerswerke Ag, 6000 Frankfurt | Verwendung von Phenoplast-PreBmassen |
| GB1280961A (en) * | 1969-10-29 | 1972-07-12 | Goldschmidt Ag Th | Aminoplast resin precondensates and a method of producing them |
-
0
- BE BE789804D patent/BE789804A/xx unknown
-
1971
- 1971-10-07 DE DE2149970A patent/DE2149970C3/de not_active Expired
-
1972
- 1972-09-29 NL NL7213238A patent/NL7213238A/xx not_active Application Discontinuation
- 1972-10-06 AT AT858072A patent/AT329271B/de not_active IP Right Cessation
- 1972-10-06 IT IT30194/72A patent/IT968712B/it active
- 1972-10-06 CA CA153,420A patent/CA970493A/en not_active Expired
- 1972-10-06 CH CH1462472A patent/CH575440A5/xx not_active IP Right Cessation
- 1972-10-06 SE SE7212927A patent/SE404193B/xx unknown
- 1972-10-06 GB GB4623672A patent/GB1366256A/en not_active Expired
- 1972-10-06 ES ES407394A patent/ES407394A1/es not_active Expired
- 1972-10-09 FR FR7235671A patent/FR2156174B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1366256A (en) | 1974-09-11 |
| CA970493A (en) | 1975-07-01 |
| NL7213238A (enExample) | 1973-04-10 |
| DE2149970A1 (de) | 1973-04-12 |
| FR2156174A1 (enExample) | 1973-05-25 |
| ATA858072A (de) | 1975-07-15 |
| IT968712B (it) | 1974-03-20 |
| AT329271B (de) | 1976-05-10 |
| ES407394A1 (es) | 1976-01-16 |
| CH575440A5 (enExample) | 1976-05-14 |
| SE404193B (sv) | 1978-09-25 |
| DE2149970B2 (de) | 1978-11-09 |
| FR2156174B1 (enExample) | 1977-07-29 |
| BE789804A (fr) | 1973-04-06 |
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