FI72454B - SALTHALTIGT TRAEKONSERVERINGSMEDEL. - Google Patents
SALTHALTIGT TRAEKONSERVERINGSMEDEL. Download PDFInfo
- Publication number
- FI72454B FI72454B FI820892A FI820892A FI72454B FI 72454 B FI72454 B FI 72454B FI 820892 A FI820892 A FI 820892A FI 820892 A FI820892 A FI 820892A FI 72454 B FI72454 B FI 72454B
- Authority
- FI
- Finland
- Prior art keywords
- wood
- weight
- compounds
- preservative
- potassium
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/10—Fluorides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/163—Compounds of boron
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/166—Compounds of phosphorus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/20—Compounds of alkali metals or ammonium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/32—Mixtures of different inorganic impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/34—Organic impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/52—Impregnating agents containing mixtures of inorganic and organic compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Inorganic Chemistry (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Description
1 724541 72454
Suolapitoinen puunsuoja-aineSalty wood preservative
Keksintö kohdistuu suolapitoiseen, vesiliukoiseen puunsuoja-aineeseen, jossa myrkyllinen perusaine on fluori-, boori-, 5 kalium, natrium- ja fosforiyhdiste.The invention relates to a saline, water-soluble wood preservative in which the toxic base is a compound of fluorine, boron, potassium, sodium and phosphorus.
Edellä mainittujen epäorgaanisten yhdisteiden, erityisesti fluoriyhdisteiden ja booriyhdisteiden käyttö puunsuoja-aineiden valmistuksessa on tunnettua. Parhaiten tunnetut puun suojaukseen käytetyt fluoriyhdisteet ovat: natriumfluoridi, 10 kaliumfluoridi, sinkkifluorosilikaatti, kaliumbifluoridi, ammoniumbifluoridi ja ammoniumfluoriboraatti. Fluoriyhdis-teitä on käytetty yksinään puun suojaukseen (NaF), yleensä ne kuitenkin sisältyvät yhtenä komponenttina puunsuojauskoosutuk-siin.The use of the above-mentioned inorganic compounds, in particular fluorine compounds and boron compounds, in the production of wood preservatives is known. The best known fluorine compounds used for wood protection are: sodium fluoride, potassium fluoride, zinc fluorosilicate, potassium bifluoride, ammonium bifluoride and ammonium fluoroborate. Fluorine compounds have been used alone for wood preservative (NaF), however, they are generally included as one component in wood preservative compositions.
15 Tunnetut puunsuoja-aineet, Wolman'in suolat, sisältävät fluoriyhdisteiden lisäksi kromiyhdisteitä (U-suoloja), kromi-ja arseeniyhdisteitä (UA-suoloja, Ull-suoloja). Bifluoridiin perustuvia aineita on myös valmistettu.15 Known wood preservatives, Wolman's salts, contain, in addition to fluorine compounds, chromium compounds (U-salts), chromium and arsenic compounds (UA salts, Ull salts). Bifluoride-based materials have also been prepared.
Booriyhdisteiden käyttö puun suojaukseen vastaa sovel-20 lutusalueeltaan fluoriyhdisteitä. Puunsuoja-aineet - Boliden' in suolat, "Wolmanit CB", esitetty DD-patentissa no 54 100, "Synpregnit CBZ, "Soltox R-12"- sisältävät koostumuksissaan booriyhdisteitä. Fluorideja tai bifluorideja ja kromiyhdisteitä sisältävillä puunsuoja-aineilla on kyky kiinnittyä puu-25 hun kyllästyksen jälkeen johtuen yhdisteiden niukkaliukoisuu- desta veteen. Suoja-aineet, jotka edellä mainittujen yhdisteiden lisäksi sisältävät booriyhdisteitä, ovat ominaisuuksiltaan vastaavia kromia ja fluoria tai kromia ja booria sisältävien, vaikeasti veteen liukenevien yhdisteiden lisääminen puuhun 30 estää välittömästi kyllästämisen jälkeen kromin tunkeutumisen edelleen syvemmälle puuhun sekä fluorin ja boorin tunkeutumisen jopa erittäin kosteaan puuhun. Mainittujen aineiden tunkeutu-missyvyys vaihtelee rajoissa 2-4 mm ilmakuivaan puuhun ja 4-6 mm kosteaan puuhun suoritettaessa kyllästys ilman painetta.The use of boron compounds for wood protection corresponds to fluorine compounds in their field of application. Wood preservatives - Boliden's salts, "Wolmanit CB", disclosed in DD Patent No. 54,100, "Synpregnit CBZ," Soltox R-12 "- contain boron compounds in their compositions. Preservatives which, in addition to the above-mentioned compounds, contain boron compounds have the same properties as chromium and fluorine or the addition of sparingly water-soluble compounds containing chromium and boron to wood 30 immediately after impregnation deeper into the wood and the penetration of fluorine and boron even into very moist wood.The penetration depth of said substances varies in the range 2-4 mm for air-dry wood and 4-6 mm for moist wood when impregnation without pressure.
35 Bifluorideihin perustuvat suoja-aineet tunkeutuvat huo mattavasti syvemmälle verrattuna edellä esitettyihin valmistei- 72454 siin Da niille on tunnusomaista, että ne tunkeutuvat edelleen syvälle puuhun kyllästyskäsittelyn jälkeen. Kuitenkin kuivattaessa puuta ilmassa haihtuu kyllästetystä puusta suuria määriä kaasumaista fluorivetyä (I^F^ , mikä on erittäin haital-5 lista ympäristölle. Tämän vuoksi suoja-aineella kyllästämisen jälkeen puun on annettava ilmasoitua noin 12 viikkoa ennen sen käyttämistä rakennustarkoituksiin. Suoja-aineiden pääepä-kohdat käytetäessä kromia ja fluoria tai kromia ja booria ovat; tunkeutumissyvyys on pieni, puuttuu kyky tunkeutua puu-10 hun ylikyllästämisen jälkeen ja puun pysyvä värinmuutos.35 Bifluoride-based preservatives penetrate considerably deeper than the above-described preparations 72454 Da are characterized in that they continue to penetrate deep into the wood after the impregnation treatment. However, when wood is dried in the air, large amounts of gaseous hydrogen fluoride (I ^ F ^ evaporate from the impregnated wood, which is very harmful to the environment. Therefore, after impregnation with a preservative, the wood must be allowed to air for about 12 weeks before being used for construction purposes. points when using chromium and fluorine or chromium and boron are, the depth of penetration is small, the ability to penetrate after supersaturation of wood-10 and the permanent discoloration of wood are lacking.
Läheisintä tekniikan tasoa edustavat mm. FI-hakemusjulkaisu 791 928 ja FI-kuulutusjulkaisu 61 320, joista edellisessä on kuvattu selluloosapitoisen aineksen kyllästyskäsittely vesiliuoksella, joka sisältää fosforihappoa sekä ammoniumsul-15 faattia ja/tai ammoniumfosfaattia, ja jälkimmäisessä selluloosapitoisen aineksen kyllästykseen käytetty vesiliuos, joka sisältää tehoaineina boorihappoa sekä ammoniumboraatteja ja/ tai ammoniakkia ja natriumtripolyfosfaattia.The closest prior art is represented by e.g. FI application publication 791 928 and FI publication publication 61 320, the former describing the impregnation treatment of a cellulosic material with an aqueous solution containing phosphoric acid and ammonium sulphate and / or ammonium phosphate, and the latter a solution of cellulosic material or ammonia and sodium tripolyphosphate.
Keksinnön mukaiselle puunsuojakoostumukselle on tunnus-20 omaista, että koostumus sisältää 35-65 paino-osaa kaliumbi-fluoridia, 1-45 paino-osaa natriumkloridia ja/tai kaliumklo-ridia, 1-25 paino-osaa natriumtetraboraattia ja/tai ortoboori-happoa, 5-25 paino-osaa kaksiemäksistä kaliumfosfaattia ja 0-1,0 paino-osaa pinta-aktiivista ainetta valittuna esterien 25 joukosta.The wood preservative composition according to the invention is characterized in that the composition contains 35 to 65 parts by weight of potassium bifluoride, 1 to 45 parts by weight of sodium chloride and / or potassium chloride, 1 to 25 parts by weight of sodium tetraborate and / or orthoboric acid, 5-25 parts by weight of dibasic potassium phosphate and 0-1.0 parts by weight of surfactant selected from esters.
Keksinnön mukaiselle suolapitoiselle suoja-aineelle on tunnusomaista tunkeutuminen syvälle puuhun (ilmakuivaan ja kosteaan puuhun) eikä se muuta puun luonnollista väriä. Sen vesiliukoisuus on erittäin suuri, ja se on hajuton. Keksinnön 30 mukaiselle suoja-aineelle on tunnusomaista kyky tunkeutua syvemmälle kyllästämisen jälkeen diffuusion vaikutuksesta. Varastoitaessa puuta olosuhteissa, jotka estävät puun kosteuden muuttumisen, suoja-aineen tunkeutumissyvyys ilmakuivaan puuhun kasvaa noin 100% ja kosteampaan puuhun enemmän kuin 35 100%. Kyllästysmenetelmissä ilman painetta ja käytettäessä hyödyksi diffuusiota on keksinnön mukaista koostumusta käytet- 3 täessä mahdollista saavuttaa sen tunkeutuminen syvemmälle kuin 20 mm. Keksinnön mukainen suoja-aine suojaa puuta ja sen lignoselluloosamateriaalia mikro-organismien hajottavaa vaikutusta vastaan tehokkaasti ja samanaikaisesti on sille tunnus-5 omaista voimakas myrkkyvaikutus hyönteisiä vastaan, jotka ovat vitsauksena puun teknologiselle käytölle. Valitsemalla asianmukaisesti suoja-aineen kemialliset yhdisteet ja määräämällä tarkoin kunkin aineosan määrä on kokeiden perusteella kehitetty suoja-aine, jonka sisältämät bifluoridit eivät vaikuta hai-10 tallisesti ympäristöön. Tämän suoja-aineryhmän pääepäkohdan poistaminen - kaasumaisen fluorivedyn kehittyminen - on oleellinen parannus.The saline preservative according to the invention is characterized by penetration deep into the wood (air-dry and moist wood) and does not change the natural color of the wood. Its water solubility is very high and it is odorless. The preservative according to the invention 30 is characterized by the ability to penetrate deeper after impregnation by diffusion. When wood is stored under conditions that prevent the moisture content of the wood from changing, the penetration depth of the preservative into air-dry wood increases by about 100% and in wetter wood by more than 35 100%. In impregnation processes without pressure and using diffusion, it is possible to achieve a penetration deeper than 20 mm when using the composition according to the invention. The preservative according to the invention effectively protects wood and its lignocellulosic material against the degrading effect of microorganisms and at the same time is characterized by a strong toxic effect against insects which are a scourge for the technological use of wood. By appropriately selecting the chemical compounds of the safener and precisely determining the amount of each ingredient, it is an experimentally developed safener whose bifluorides do not have a detrimental effect on the environment. Removing the main point of this group of preservatives - the evolution of hydrogen fluoride - is a substantial improvement.
Keksinnön mukainen puunsuoja-aine sisältää viisi aineosaa, jotka ovat epäorgaanisia yhdisteitä: kaliumbifluoridi, 15 kaksiemäksinen kaliumfosfaatti, natriumtetraboraatti tai boori-happo, natrium- tai kaliumkloridi ja pinta-aktiivinen aine. Mainittuja yhdisteitä ei aikaisemmin ole käytetty edellä mainittuna yhdistelmänä puunsuoja-aineena.The wood preservative according to the invention contains five components which are inorganic compounds: potassium bifluoride, dibasic potassium phosphate, sodium tetraborate or boric acid, sodium or potassium chloride and a surfactant. Said compounds have not previously been used as the above-mentioned combination as a wood preservative.
Esterien ryhmästä saadun pinta-aktiivisen aineen lisää-20 minen mainittuun puunsuoja-aineeseen parantaa mahdollisuutta tunkeutumissyvyyden suurentamiseen puuhun.The addition of a surfactant obtained from the group of esters to said wood preservative improves the possibility of increasing the depth of penetration into the wood.
On havaittu, että parhaat tulokset saavutetaan käytettä-että keksinnön mukaisesti 100 paino-osaa kohti kutakin aineosaa seuraavana määränä: 25 - kaliumbifluoridi 35-65 paino-osaa natriumkloridi 1-45 paino-osaa natriumtetraboraatti 1-25 paino-osaa - kaksiemäksinen kaliumfosfaatti 5-25 paino-osaa pinta-aktiivinen aine (estereistä) 0-1 paino-osaa ^ Keksinnön mukaisessa suolapitoisessa puunsuojaaineessa voidaan natriumkloridi osaksi tai kokonaan korvata kalium-kloridilla, natriumtetraboraatti korvata osaksi tai kokonaan ortoboorihapolla. Suoja-ainetta käytetään 5-15- prosenttisena vesiliuoksena.It has been found that the best results are obtained according to the invention in terms of 100 parts by weight of each ingredient in the following amounts: 25 - potassium bifluoride 35-65 parts by weight sodium chloride 1-45 parts by weight sodium tetraborate 1-25 parts by weight - dibasic potassium phosphate 5- 25 parts by weight of surfactant (of esters) 0 to 1 part by weight In the saline wood preservative according to the invention, sodium chloride can be partially or completely replaced by potassium chloride, sodium tetraborate can be partially or completely replaced by orthoboric acid. The preservative is used as a 5-15% aqueous solution.
Keksinnön mukaista suoja-ainetta esitellään yksityiskohtaisemmin seuraavien toteutusesimerkkien avulla: 35 4 72454The preservative according to the invention is presented in more detail by means of the following embodiments: 35 4 72454
Esimerkki 1Example 1
Ilmakuivan puun kyllästämiseen käytetään seuraavien aineosien 10%:sta vesiliuosta: 5 39 paino-% kaliumbifluoridia 45 paino-% kaliumkloridia - 4 paino-% natriumtetraboraattia 11 paino-% kaksiemäksistä kaliumfosfaattia 1 paino-% etyylirikkihappoa 10A 10% aqueous solution of the following ingredients is used to impregnate air-dried wood: 5 39% by weight of potassium bifluoride 45% by weight of potassium chloride - 4% by weight of sodium tetraborate 11% by weight of dibasic potassium phosphate 1% by weight of ethyl sulfuric acid 10
Esimerkki 2Example 2
Kostean puun kyllästämiseksi käytetään seuraavien aineosien 15%:ista vesiliuosta: 15 - 32 paino-% kaliumbifluoridia 38 paino-% natriumkloridia 6 paino-% ortoboorihappoa 23 paino-% kaksiemäksistä kaliumfosfaattia 1 paino-% etyyliasetaattia 20A 15% aqueous solution of the following ingredients is used to impregnate moist wood: 15 to 32% by weight of potassium bifluoride 38% by weight of sodium chloride 6% by weight of orthoboric acid 23% by weight of dibasic potassium phosphate 1% by weight of ethyl acetate 20
Esimerkki 3Example 3
Ilmakuivan puun kyllästämiseen käytetään seuraavien aineosien 5%:ista vesiliuosta: 25 - 35 paino-% kaliumbifluoridia 25 paino-% natriumtetraboraattia 25 paino-% kaksiemäksistä kaliumfosfaattia 15 paino-% kaliumkloridia 30 Esimerkki 4A 5% aqueous solution of the following ingredients is used to impregnate air-dried wood: 25 to 35% by weight of potassium bifluoride 25% by weight of sodium tetraborate 25% by weight of dibasic potassium phosphate 15% by weight of potassium chloride Example 4
Kostean puun kyllästämiseen käytetään seuraavien aineosien 15%:ista vesiliuosta: 45 paino-% kaliumbifluoridia 35 - 40 paino-% natriumkloridia 9 paino-% ortoboorihappoa 5 paino-% kaksiemäksistä kaliumfosfaattia 1 paino-% etyyliasetaattia.A 15% aqueous solution of the following ingredients is used to impregnate wet wood: 45% by weight of potassium bifluoride 35 to 40% by weight of sodium chloride 9% by weight of orthoboric acid 5% by weight of dibasic potassium phosphate 1% by weight of ethyl acetate.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL23025381A PL139384B1 (en) | 1981-03-20 | 1981-03-20 | Wood preserving agent |
PL23025381 | 1981-03-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
FI820892L FI820892L (en) | 1982-09-21 |
FI72454B true FI72454B (en) | 1987-02-27 |
FI72454C FI72454C (en) | 1987-06-08 |
Family
ID=20007762
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI820892A FI72454C (en) | 1981-03-20 | 1982-03-16 | SALTHALTIGT TRAEKONSERVERINGSMEDEL. |
Country Status (9)
Country | Link |
---|---|
CS (1) | CS228918B2 (en) |
DD (1) | DD202116A5 (en) |
DE (1) | DE3210193A1 (en) |
FI (1) | FI72454C (en) |
FR (1) | FR2502053A1 (en) |
GB (1) | GB2095113B (en) |
PL (1) | PL139384B1 (en) |
SE (1) | SE460031B (en) |
SU (1) | SU1168092A3 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3336557A1 (en) * | 1983-10-07 | 1985-04-18 | Desowag-Bayer Holzschutz GmbH, 4000 Düsseldorf | AGENT AND METHOD FOR PRESERVATING WOOD AND WOODEN MATERIALS |
DE3680112D1 (en) * | 1986-09-15 | 1991-08-08 | Desowag Materialschutz Gmbh | WOOD PRESERVATIVES. |
US5770265A (en) * | 1995-09-26 | 1998-06-23 | Triangle Laboratories, Inc. | Environmentally friendly treatments to extend the functional life of wood structures and novel treated wood structures |
-
1981
- 1981-03-20 PL PL23025381A patent/PL139384B1/en unknown
-
1982
- 1982-03-11 SU SU823453704A patent/SU1168092A3/en active
- 1982-03-16 FI FI820892A patent/FI72454C/en not_active IP Right Cessation
- 1982-03-17 DD DD23822982A patent/DD202116A5/en unknown
- 1982-03-18 CS CS188382A patent/CS228918B2/en unknown
- 1982-03-19 SE SE8201743A patent/SE460031B/en not_active IP Right Cessation
- 1982-03-19 FR FR8204768A patent/FR2502053A1/en not_active Withdrawn
- 1982-03-19 DE DE19823210193 patent/DE3210193A1/en not_active Withdrawn
- 1982-03-19 GB GB8208098A patent/GB2095113B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DD202116A5 (en) | 1983-08-31 |
FR2502053A1 (en) | 1982-09-24 |
DE3210193A1 (en) | 1982-09-30 |
SU1168092A3 (en) | 1985-07-15 |
GB2095113A (en) | 1982-09-29 |
PL230253A1 (en) | 1982-09-27 |
CS228918B2 (en) | 1984-05-14 |
SE8201743L (en) | 1982-09-21 |
FI820892L (en) | 1982-09-21 |
SE460031B (en) | 1989-09-04 |
PL139384B1 (en) | 1987-01-31 |
GB2095113B (en) | 1984-10-24 |
FI72454C (en) | 1987-06-08 |
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Legal Events
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MM | Patent lapsed |
Owner name: SZKOLA GLOWNA GOSPODARSTWA WIEJSKIEGO |