DE2626565C3 - Verbundmaterial und Verfahren zu seiner Herstellung - Google Patents
Verbundmaterial und Verfahren zu seiner HerstellungInfo
- Publication number
- DE2626565C3 DE2626565C3 DE2626565A DE2626565A DE2626565C3 DE 2626565 C3 DE2626565 C3 DE 2626565C3 DE 2626565 A DE2626565 A DE 2626565A DE 2626565 A DE2626565 A DE 2626565A DE 2626565 C3 DE2626565 C3 DE 2626565C3
- Authority
- DE
- Germany
- Prior art keywords
- composite material
- layer
- foam
- porous substrate
- coating
- 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
- 239000002131 composite material Substances 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000000034 method Methods 0.000 title description 15
- 239000000758 substrate Substances 0.000 claims description 45
- 239000006260 foam Substances 0.000 claims description 40
- 230000004888 barrier function Effects 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 19
- 239000011347 resin Substances 0.000 claims description 17
- 229920005989 resin Polymers 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 235000013312 flour Nutrition 0.000 claims description 13
- 239000010451 perlite Substances 0.000 claims description 11
- 235000019362 perlite Nutrition 0.000 claims description 11
- 229920002472 Starch Polymers 0.000 claims description 9
- 235000019698 starch Nutrition 0.000 claims description 9
- 239000008107 starch Substances 0.000 claims description 9
- 235000013339 cereals Nutrition 0.000 claims description 8
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 6
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims description 6
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 5
- -1 methylol groups Chemical group 0.000 claims description 5
- 239000011496 polyurethane foam Substances 0.000 claims description 5
- 229920000877 Melamine resin Polymers 0.000 claims description 4
- 238000009472 formulation Methods 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 3
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 claims description 3
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000013011 aqueous formulation Substances 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- 229920000582 polyisocyanurate Polymers 0.000 claims 1
- 239000011495 polyisocyanurate Substances 0.000 claims 1
- 150000003839 salts Chemical class 0.000 claims 1
- 239000010455 vermiculite Substances 0.000 claims 1
- 235000019354 vermiculite Nutrition 0.000 claims 1
- 229910052902 vermiculite Inorganic materials 0.000 claims 1
- 238000000576 coating method Methods 0.000 description 43
- 239000011248 coating agent Substances 0.000 description 37
- 238000001035 drying Methods 0.000 description 14
- 239000007788 liquid Substances 0.000 description 12
- 230000035515 penetration Effects 0.000 description 10
- 239000000047 product Substances 0.000 description 10
- 238000009413 insulation Methods 0.000 description 9
- 239000000126 substance Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 7
- 238000005187 foaming Methods 0.000 description 7
- HCJLVWUMMKIQIM-UHFFFAOYSA-M sodium;2,3,4,5,6-pentachlorophenolate Chemical compound [Na+].[O-]C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl HCJLVWUMMKIQIM-UHFFFAOYSA-M 0.000 description 4
- 239000010426 asphalt Substances 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- 150000003077 polyols Chemical class 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 3
- GZCGUPFRVQAUEE-SLPGGIOYSA-N aldehydo-D-glucose Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C=O GZCGUPFRVQAUEE-SLPGGIOYSA-N 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- IZUPBVBPLAPZRR-UHFFFAOYSA-N pentachlorophenol Chemical compound OC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl IZUPBVBPLAPZRR-UHFFFAOYSA-N 0.000 description 2
- 239000003380 propellant Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000005507 spraying Methods 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 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920000881 Modified starch Polymers 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000008258 liquid foam Substances 0.000 description 1
- 239000012705 liquid precursor Substances 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229940029284 trichlorofluoromethane Drugs 0.000 description 1
- 210000002700 urine Anatomy 0.000 description 1
Classifications
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0084—Foaming
-
- 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
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/02—Cellular or porous
- B32B2305/022—Foam
-
- 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
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/02—Cellular or porous
- B32B2305/026—Porous
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
-
- 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
- B32B2607/00—Walls, panels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249981—Plural void-containing components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249987—With nonvoid component of specified composition
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249987—With nonvoid component of specified composition
- Y10T428/249991—Synthetic resin or natural rubbers
- Y10T428/249992—Linear or thermoplastic
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31547—Of polyisocyanurate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31942—Of aldehyde or ketone condensation product
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Building Environments (AREA)
- Polyurethanes Or Polyureas (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/588,816 US3978264A (en) | 1975-06-20 | 1975-06-20 | Coating for porous surfaces |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DE2626565A1 DE2626565A1 (de) | 1976-12-23 |
| DE2626565B2 DE2626565B2 (de) | 1979-08-09 |
| DE2626565C3 true DE2626565C3 (de) | 1980-04-10 |
Family
ID=24355406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2626565A Expired DE2626565C3 (de) | 1975-06-20 | 1976-06-14 | Verbundmaterial und Verfahren zu seiner Herstellung |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3978264A (Direct) |
| DE (1) | DE2626565C3 (Direct) |
| FR (1) | FR2324453A1 (Direct) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0042423A1 (en) * | 1979-12-27 | 1981-12-30 | PARKER, Lawrence J | Composite polyisocyanurate foam board |
| US4324834A (en) * | 1980-06-05 | 1982-04-13 | Nrg Research Laboratories, Inc. | Insulation means and method |
| DE3034799A1 (de) * | 1980-09-16 | 1982-04-29 | Daimler-Benz Ag, 7000 Stuttgart | Teppichbodenbelag mit angeschaeumtem ruecken fuer den innenraum eines kraftfahrzeugs |
| DE69125911T2 (de) * | 1990-10-18 | 1997-10-16 | Felix Gerard Janssen | Mikrobizider Schallziegel |
| DE29518476U1 (de) * | 1995-11-21 | 1996-02-15 | Eberleh, Heinz-Dieter, 50823 Köln | Faserfreier Dämmstoff zur Wärmeisolierung |
| US20050156348A1 (en) * | 2000-10-06 | 2005-07-21 | Randall James W. | Method and apparatus for making building panels having low edge thickness swelling |
| US6572804B2 (en) | 2000-10-18 | 2003-06-03 | Borden Chemical, Inc. | Method for making building panels having low edge thickness swelling |
| BRPI0107238B8 (pt) * | 2000-10-06 | 2022-10-25 | Borden Chem Inc | Processos de fabrico de painéis de construção. |
| US20030090022A1 (en) * | 2000-10-06 | 2003-05-15 | James Randall | Method and apparatus for making building panels having low edge thickness swelling |
| WO2012112624A2 (en) | 2011-02-15 | 2012-08-23 | Svaya Nanotechnologies, Inc. | Methods and materials for functional polyionic species and deposition thereof |
| WO2013052927A2 (en) | 2011-10-07 | 2013-04-11 | Svaya Nanotechnologies, Inc. | Broadband solar control film |
| WO2013070473A1 (en) * | 2011-11-09 | 2013-05-16 | Svaya Nanotechnologies, Inc. | Bridging films for porous thin films |
| KR102205233B1 (ko) | 2012-09-17 | 2021-01-19 | 이스트만 케미칼 컴파니 | 레이어-바이-레이어 조립을 위한 하프-이중층을 형성하는 방법 |
| US9817166B2 (en) | 2014-12-15 | 2017-11-14 | Eastman Chemical Company | Electromagnetic energy-absorbing optical product and method for making |
| US9891347B2 (en) | 2014-12-15 | 2018-02-13 | Eastman Chemical Company | Electromagnetic energy-absorbing optical product and method for making |
| US9891357B2 (en) | 2014-12-15 | 2018-02-13 | Eastman Chemical Company | Electromagnetic energy-absorbing optical product and method for making |
| US9453949B2 (en) | 2014-12-15 | 2016-09-27 | Eastman Chemical Company | Electromagnetic energy-absorbing optical product and method for making |
| US10400105B2 (en) | 2015-06-19 | 2019-09-03 | The Research Foundation For The State University Of New York | Extruded starch-lignin foams |
| US10338287B2 (en) | 2017-08-29 | 2019-07-02 | Southwall Technologies Inc. | Infrared-rejecting optical products having pigmented coatings |
| US11747532B2 (en) | 2017-09-15 | 2023-09-05 | Southwall Technologies Inc. | Laminated optical products and methods of making them |
| US10613261B2 (en) | 2018-04-09 | 2020-04-07 | Southwall Technologies Inc. | Selective light-blocking optical products having a neutral reflection |
| US10627555B2 (en) | 2018-04-09 | 2020-04-21 | Southwall Technologies Inc. | Selective light-blocking optical products having a neutral reflection |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2487060A (en) * | 1946-11-20 | 1949-11-08 | Ind Tape Corp | Barrier coat for adhesive sheets |
| US2774698A (en) * | 1953-05-12 | 1956-12-18 | Robert L Jenk | Composite board |
| GB801388A (en) * | 1954-02-17 | 1958-09-10 | Koppers Co Inc | Improvements in or relating to laminated board structures |
| US3510391A (en) * | 1967-05-15 | 1970-05-05 | Grefco | Perlite board bonded to organic plastic foam |
| FR2069922A1 (en) * | 1969-12-05 | 1971-09-10 | Grefco | Perlite board bonded to plastic foam |
| US3533901A (en) * | 1968-08-05 | 1970-10-13 | Allied Chem | Process for production of polyurethane foam laminates and product produced thereby |
| US3814659A (en) * | 1971-02-01 | 1974-06-04 | Upjohn Co | Novel compositions |
-
1975
- 1975-06-20 US US05/588,816 patent/US3978264A/en not_active Expired - Lifetime
-
1976
- 1976-06-14 DE DE2626565A patent/DE2626565C3/de not_active Expired
- 1976-06-18 FR FR7618628A patent/FR2324453A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| US3978264A (en) | 1976-08-31 |
| DE2626565A1 (de) | 1976-12-23 |
| FR2324453B1 (Direct) | 1982-03-12 |
| DE2626565B2 (de) | 1979-08-09 |
| FR2324453A1 (fr) | 1977-04-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C3 | Grant after two publication steps (3rd publication) | ||
| 8339 | Ceased/non-payment of the annual fee |