NO150706B - ABSORBING FIBER PRODUCT FOR MECHANICAL PROTECTION AND CLEANING - Google Patents
ABSORBING FIBER PRODUCT FOR MECHANICAL PROTECTION AND CLEANING Download PDFInfo
- Publication number
- NO150706B NO150706B NO803093A NO803093A NO150706B NO 150706 B NO150706 B NO 150706B NO 803093 A NO803093 A NO 803093A NO 803093 A NO803093 A NO 803093A NO 150706 B NO150706 B NO 150706B
- Authority
- NO
- Norway
- Prior art keywords
- polyamide
- acid
- cleaning
- fiber product
- mechanical protection
- Prior art date
Links
- 239000000835 fiber Substances 0.000 title description 4
- 238000004140 cleaning Methods 0.000 title 1
- 239000004952 Polyamide Substances 0.000 claims description 16
- 229920002647 polyamide Polymers 0.000 claims description 16
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 230000008961 swelling Effects 0.000 claims description 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 5
- 235000019253 formic acid Nutrition 0.000 claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 5
- 239000011707 mineral Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000000499 gel Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- JXTHNDFMNIQAHM-UHFFFAOYSA-N dichloroacetic acid Chemical compound OC(=O)C(Cl)Cl JXTHNDFMNIQAHM-UHFFFAOYSA-N 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 229960005215 dichloroacetic acid Drugs 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/44—Medicaments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
- A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/12—Applications used for fibers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Hematology (AREA)
- Public Health (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicinal Preparation (AREA)
- Materials For Medical Uses (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
Description
Fremgangsmåte for fremstilling av et finfordelt, lineært syntetisk polyamid med evne til å danne stabil dispersjon etter mekanisk rivning. Process for the production of a finely divided, linear synthetic polyamide with the ability to form a stable dispersion after mechanical tearing.
Nærværende oppfinnelse vedrører en The present invention relates to a
fremgangsmåte for fremstilling av et finfordelt, lineært syntetisk polyamid med method for producing a finely divided, linear synthetic polyamide with
evne til å danne stabil dispersjon etter mekanisk rivning. ability to form stable dispersion after mechanical tearing.
Disse finfordelte gel-dannede, lineære These finely divided gel-formed, linear
syntetiske polyamider er anvendelige for synthetic polyamides are applicable for
fremstilling av overtrekk for ark og bæren-de overflater, for tilblanding med cellulose-krystallittaggregater som et støpepulver, og 1 tilblanding med cellulose eller cellulose-derivater for å danne fibrer eller filmer. production of coatings for sheets and bearing surfaces, for admixture with cellulose crystallite aggregates as a casting powder, and 1 admixture with cellulose or cellulose derivatives to form fibers or films.
Disse polyamider oppnås i overensstem-meles med nærværende oppfinnelse ved at These polyamides are obtained in accordance with the present invention by
nevnte polyamid avbygges ved en mild hydrolysebehandling med en finfordelt mine-ralsyreoppløsning, fortrinnsvis saltsyre ved said polyamide is broken down by a mild hydrolysis treatment with a finely divided mineral acid solution, preferably hydrochloric acid at
en temperatur mellom 50° C og en temperatur under kokepunktet for den fortynnede mineralsyre ved atmosfærisk trykk a temperature between 50° C and a temperature below the boiling point of the dilute mineral acid at atmospheric pressure
for å oppnå et vannuoppløselig, lett rivbart to achieve a water-insoluble, easily tearable
materiale. material.
De filamentdannende, lineært syntetiske polyamider som er anvendelige for The filament-forming, linear synthetic polyamides which are applicable for
nærværende oppfinnelse omfatter de som the present invention includes those which
beskrives i U.S. patentene nr. 2 071 250, described in the U.S. the patents no. 2 071 250,
2 171 253, 2 130 523 og 2 130 948. Disse polyamider er av to typer, nemlig de som fremstilles ved polymerisasj on av monoamino-monocarboksylsyrer og de som oppnås fra 2 171 253, 2 130 523 and 2 130 948. These polyamides are of two types, namely those produced by the polymerization of monoamino-monocarboxylic acids and those obtained from
diaminer og to-basiske carboksylsyrer. diamines and dibasic carboxylic acids.
Polyamidene kan lett hydrolyseres ved The polyamides can be easily hydrolysed by
innvirkning av fortynnede mineralsyreopp-løsninger, f. eks. saltsyre, svovelsyre og sal-petersyre ved temperaturer over 50° C. Hy- impact of dilute mineral acid solutions, e.g. hydrochloric acid, sulfuric acid and nitric acid at temperatures above 50° C. Hy-
drolysetrinnet ved fremgangsmåten etter nærværende oppfinnelse er tilstrekkelig til å bryte ned eller løsne amorfe områder i den polymere fine struktur for å oppnå et mer overveiende krystallinsk materiale som er rivbart ved anvendelse av mekaniske oppdelingsmidler med en nominell mengde energi. the hydrolysis step of the method according to the present invention is sufficient to break down or loosen amorphous regions in the polymeric fine structure to obtain a more predominantly crystalline material that is tearable using mechanical breaking agents with a nominal amount of energy.
For det formål å fremstille stabile dis-persjoner eller geler av polyamidmaterialet kan det behandles med et svellingsmiddel før rivning eller det kan først rives og derpå dispergeres ved mekanisk agitasjon i et flytende svellende medium. For the purpose of producing stable dispersions or gels of the polyamide material, it can be treated with a swelling agent before shredding or it can first be shredded and then dispersed by mechanical agitation in a liquid swelling medium.
Svellingsmidler for nærværende oppfinnelse er de flytende media som vil svelle, men ikke løse opp polyamidet og omfatter, f. eks. fortynnete, vandige oppløsninger av lavere alifatiske syrer som f. eks. maursyre, eddiksyre, dikloreddiksyre og trikloreddik-syre og blandinger av fenol, kresol og re-sorcinol med vann. Swelling agents for the present invention are the liquid media which will swell but not dissolve the polyamide and include, e.g. dilute, aqueous solutions of lower aliphatic acids such as formic acid, acetic acid, dichloroacetic acid and trichloroacetic acid and mixtures of phenol, cresol and resorcinol with water.
Mekanisk oppdeling av det delvis av-byggede polyamid kan utføres på mange måter, som ved å utsette det for rivning i en mølle eller for en hurtig kuttende virk-ning eller for innvirkning av høye trykk. Oppdeling av polyamidmaterialet utføres i nærvær av et flytende medium, skjønt hvor høye trykk alene er anvendt, er et slikt medium, selv om ønsket, ikke nødvendig. Fortynnet maursyreoppløsning er et fore-trukket medium, men andre væsker er eg-net, inklusive vann, sukkeroppløsninger, polyoler, av hvilke glycerol er et eksempel og alkoholer, særlig etanol og isopropanol. Uansett hvilken metode som anvendes, ut-føres oppdelingen i slik grad at det resulte-rende partikkelformete materiale danner en stabil suspensjon i det flytende, svellende medium i hvilket de er blitt revet eller i hvilket de etterpå dispergeres. Ved en stabil suspensjon forstås en fra hvilken det revne materiale ikke vil avsette seg, men hvor det vil forbli suspendert i ube-stemt tid, selv over perioder som kan må-i les i uker eller måneder. Ved lavere konsentrasjoner av det revne materiale er sus-pensj onen en dispersj on mens ved høye konsentrasjoner er den en gel. Mechanical division of the partially decomposed polyamide can be carried out in many ways, such as by subjecting it to tearing in a mill or to a rapid cutting action or to the impact of high pressures. Division of the polyamide material is carried out in the presence of a liquid medium, although where high pressure alone is used, such a medium, even if desired, is not necessary. Dilute formic acid solution is a preferred medium, but other liquids are suitable, including water, sugar solutions, polyols, of which glycerol is an example, and alcohols, especially ethanol and isopropanol. Regardless of which method is used, the division is carried out to such an extent that the resulting particulate material forms a stable suspension in the liquid, swelling medium in which they have been torn or in which they are subsequently dispersed. By a stable suspension is meant one from which the torn material will not settle, but where it will remain suspended for an indefinite period of time, even over periods which may last for weeks or months. At lower concentrations of the torn material, the suspension is a dispersion, while at high concentrations it is a gel.
Etter den mekaniske oppdeling av det hydrolyserte materiale kan det resulteren-de produkt, enten det er en dispersj on eller gel, brukes som sådant, eller det kan tør-kes, eller det kan være ønskelig å skille det i fraksjoner som har en mer ensartet par-tikkelstørrelsesfordeling. Det tørrete, revne i materiale lar seg lett redispergeres i et flytende svellingsmedium ved hjelp av en blander-type-agitator. After the mechanical division of the hydrolysed material, the resulting product, whether it is a dispersion or gel, can be used as such, or it can be dried, or it may be desirable to separate it into fractions that have a more uniform particle size distribution. The dried, cracked material can be easily redispersed in a liquid swelling medium using a mixer-type agitator.
Formete artikler kan formes fra de stabile dispersj oner etter nærværende oppfinnelse ved å forme dispersj onen f. eks., ved ekstrudering eller støpning, i den øns-i kete form og derpå vaske eller dykke artik-1 lcelen i vann eller en fortynnet alkalisk; oppløsning, som f. eks. natriumhydroksyd. Shaped articles can be formed from the stable dispersions of the present invention by shaping the dispersion, for example, by extrusion or casting, into the desired shape and then washing or immersing the article in water or a dilute alkaline; resolution, such as sodium hydroxide.
Det følgende eksempel angis for å be-: skrive metoden etter nærværende oppfinnelse: 50 gram polyheksametylenadipamid stabelfiber ble hydrolysert i 8 timer ved 72° C i 1150 cm3 av en 5 pst. vandig salt-syreoppløsning. Etter vasking av det hydrolyserte polyamid med vann inntil meste-parten av syren ble fjernet, ble den kort (20 minutter) revet i en Hobart mixer og derpå i 7 minutter i en «Mixmaster» i vann ved en 35 pst. faststoff konsentrasjon for å redusere produktet til en fiberpastalignen-de masse. 400 cm^ av en 90 pst. vandig maursyreoppløsning ble tilsatt til den fi-brøse masse som ble blandet og fikk henstå over natten ved romtemperatur. Syreblan-tiingen ble nøytralisert til pH 7 med natriumhydroksyd og hele suspensjonen ble di-alysert over natten. Etter filtrering holdt produktet tilbake en stor del vann og yt-terligere vann ble tilsatt for å oppnå en faststoff konsentrasjon på 10 pst. Blandin-gen ble revet i en «Mixmaster» i 20 minutter for å oppnå en j evn stabil gel. The following example is given to describe the method according to the present invention: 50 grams of polyhexamethylene adipamide staple fiber was hydrolyzed for 8 hours at 72° C. in 1150 cm 3 of a 5% aqueous hydrochloric acid solution. After washing the hydrolyzed polyamide with water until most of the acid was removed, it was briefly (20 minutes) shredded in a Hobart mixer and then for 7 minutes in a "Mixmaster" in water at a 35 percent solids concentration to reduce the product to a fiber paste-like mass. 400 cc of a 90% aqueous formic acid solution was added to the fibrous mass which was mixed and allowed to stand overnight at room temperature. The acid mixture was neutralized to pH 7 with sodium hydroxide and the entire suspension dialyzed overnight. After filtration, the product retained a large amount of water and further water was added to achieve a solids concentration of 10 per cent. The mixture was torn in a "Mixmaster" for 20 minutes to achieve an even stable gel.
Det ble funnet at en fin film kunne fremstilles fra denne gel etterat den ble fortynnet til en faststoff konsentrasj on på 32 pst. i konsentrert maursyre og å støpe et ark derav i vann eller fortynnet alkali. It was found that a fine film could be produced from this gel after it was diluted to a solids concentration of 32 percent in concentrated formic acid and casting a sheet thereof in water or dilute alkali.
Claims (2)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT26577/79A IT1125491B (en) | 1979-10-18 | 1979-10-18 | PREPARED FOR THE TREATMENT OF WOUNDS, SORES, ULCERATIONS AND OTHER EXUDATIVE SKIN AFFECTIONS |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO803093L NO803093L (en) | 1981-04-21 |
| NO150706B true NO150706B (en) | 1984-08-27 |
| NO150706C NO150706C (en) | 1984-12-05 |
Family
ID=11219819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO803093A NO150706C (en) | 1979-10-18 | 1980-10-16 | ABSORBING FIBER PRODUCT FOR MECHANICAL PROTECTION AND CLEANING |
Country Status (15)
| Country | Link |
|---|---|
| JP (1) | JPS5666261A (en) |
| BE (1) | BE885774A (en) |
| BR (1) | BR8006651A (en) |
| CA (1) | CA1156555A (en) |
| DE (1) | DE3039288C2 (en) |
| DK (1) | DK438880A (en) |
| FI (1) | FI803165L (en) |
| FR (1) | FR2467600A1 (en) |
| GB (1) | GB2060381B (en) |
| IE (1) | IE50324B1 (en) |
| IT (1) | IT1125491B (en) |
| LU (1) | LU82854A1 (en) |
| NL (1) | NL8005773A (en) |
| NO (1) | NO150706C (en) |
| SE (1) | SE8007283L (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH365830A (en) * | 1960-05-30 | 1962-11-30 | Soc D Rech Scient Et D Exploit | Non-stick dressing material |
| US3878138A (en) * | 1972-10-30 | 1975-04-15 | Warner Lambert Co | Anhydrous products having improved wettability characteristics |
| SE452109B (en) * | 1973-01-29 | 1987-11-16 | Pharmacia Ab | SCIENTIFIC CLEANER EXTENDED SARYTOR |
| IT995549B (en) * | 1973-10-02 | 1975-11-20 | Anic Spa | PROCEDURE FOR THE PRODUCTION OF FIBROUS STRUCTURES |
| CA1113005A (en) * | 1977-12-06 | 1981-11-24 | Pierluigi Vanoni | Excipient composition for creams |
-
1979
- 1979-10-18 IT IT26577/79A patent/IT1125491B/en active
-
1980
- 1980-10-06 FI FI803165A patent/FI803165L/en not_active Application Discontinuation
- 1980-10-07 IE IE2082/80A patent/IE50324B1/en unknown
- 1980-10-14 BR BR8006651A patent/BR8006651A/en unknown
- 1980-10-15 LU LU82854A patent/LU82854A1/en unknown
- 1980-10-15 GB GB8033198A patent/GB2060381B/en not_active Expired
- 1980-10-16 NO NO803093A patent/NO150706C/en unknown
- 1980-10-16 SE SE8007283A patent/SE8007283L/en not_active Application Discontinuation
- 1980-10-16 DK DK438880A patent/DK438880A/en not_active Application Discontinuation
- 1980-10-17 JP JP14453280A patent/JPS5666261A/en active Pending
- 1980-10-17 CA CA000362637A patent/CA1156555A/en not_active Expired
- 1980-10-17 FR FR8022310A patent/FR2467600A1/en active Granted
- 1980-10-17 BE BE0/202512A patent/BE885774A/en not_active IP Right Cessation
- 1980-10-17 DE DE3039288A patent/DE3039288C2/en not_active Expired
- 1980-10-20 NL NL8005773A patent/NL8005773A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NO803093L (en) | 1981-04-21 |
| BE885774A (en) | 1981-04-17 |
| IE802082L (en) | 1981-04-18 |
| NO150706C (en) | 1984-12-05 |
| CA1156555A (en) | 1983-11-08 |
| GB2060381B (en) | 1984-01-25 |
| DK438880A (en) | 1981-04-19 |
| IE50324B1 (en) | 1986-04-02 |
| LU82854A1 (en) | 1981-06-04 |
| DE3039288C2 (en) | 1984-01-19 |
| JPS5666261A (en) | 1981-06-04 |
| NL8005773A (en) | 1981-04-22 |
| IT1125491B (en) | 1986-05-14 |
| FI803165L (en) | 1981-04-19 |
| GB2060381A (en) | 1981-05-07 |
| BR8006651A (en) | 1981-04-22 |
| IT7926577A0 (en) | 1979-10-18 |
| DE3039288A1 (en) | 1981-04-30 |
| FR2467600A1 (en) | 1981-04-30 |
| FR2467600B1 (en) | 1983-06-10 |
| SE8007283L (en) | 1981-04-19 |
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