EP0326059B1 - Procédé de chaulage avec obtention de poils - Google Patents
Procédé de chaulage avec obtention de poils Download PDFInfo
- Publication number
- EP0326059B1 EP0326059B1 EP89101120A EP89101120A EP0326059B1 EP 0326059 B1 EP0326059 B1 EP 0326059B1 EP 89101120 A EP89101120 A EP 89101120A EP 89101120 A EP89101120 A EP 89101120A EP 0326059 B1 EP0326059 B1 EP 0326059B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- skins
- process according
- liming
- hides
- weight
- 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 - Lifetime
Links
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- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 description 1
- 235000018417 cysteine Nutrition 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 229940079919 digestives enzyme preparation Drugs 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- HFCSXCKLARAMIQ-UHFFFAOYSA-L disodium;sulfate;hydrate Chemical compound O.[Na+].[Na+].[O-]S([O-])(=O)=O HFCSXCKLARAMIQ-UHFFFAOYSA-L 0.000 description 1
- 230000006334 disulfide bridging Effects 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- XOHQAXXZXMHLPT-UHFFFAOYSA-N ethyl(phosphonooxy)phosphinic acid Chemical compound CCP(O)(=O)OP(O)(O)=O XOHQAXXZXMHLPT-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010685 fatty oil Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 150000002314 glycerols Chemical class 0.000 description 1
- 230000003806 hair structure Effects 0.000 description 1
- 150000003840 hydrochlorides Chemical class 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 1
- 150000007529 inorganic bases Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229940099596 manganese sulfate Drugs 0.000 description 1
- 239000011702 manganese sulphate Substances 0.000 description 1
- 235000007079 manganese sulphate Nutrition 0.000 description 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 1
- 229940056960 melamin Drugs 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 210000004197 pelvis Anatomy 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000003009 phosphonic acids Chemical class 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920000223 polyglycerol Polymers 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 235000019833 protease Nutrition 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 210000002023 somite Anatomy 0.000 description 1
- 230000019635 sulfation Effects 0.000 description 1
- 238000005670 sulfation reaction Methods 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- KDZCMNKCNXVTIK-UHFFFAOYSA-N sulfonylmethanediamine Chemical compound NC(N)=S(=O)=O KDZCMNKCNXVTIK-UHFFFAOYSA-N 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 229940066769 systemic antihistamines substituted alkylamines Drugs 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- FYOWZTWVYZOZSI-UHFFFAOYSA-N thiourea dioxide Chemical compound NC(=N)S(O)=O FYOWZTWVYZOZSI-UHFFFAOYSA-N 0.000 description 1
- 150000003613 toluenes Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C1/00—Chemical treatment prior to tanning
- C14C1/06—Facilitating unhairing, e.g. by painting, by liming
Definitions
- the liming of the meat column is carried out with the addition of lime in the fleet of the scarifier.
- liming aid consisting of 10% by weight of triethanolamine, 20% by weight of thioglycerol, 14% by weight of guanidine hydrochloride, 66% by weight of water 3.5% hydrated lime Move 60 minutes.
- Example 5 Carried out analogously to Example 1, but in the incubation phase 1.0% by weight (based on the salt weight), a liming aid of the following composition is used: 25% by weight urea 75% by weight thiourea-S, S-dioxide
- a liming aid of the following composition is used: 25% by weight urea 75% by weight thiourea-S, S-dioxide
- the mixtures according to Examples 5-7 can be used with equally good success in the process variant according to Example 2.
- Example 2 Carried out analogously to Example 1, but 0.25% by weight (based on the salt weight) of nonionic surfactants of the following composition are used for the switch: 40 wt .-% C11-C15 oxo alcohol with 6 moles of ethylene oxide 20 wt .-% C11-C15 oxo alcohol with 9 moles of ethylene oxide 20 wt .-% C11-C15 oxo alcohol with 12 moles of ethylene oxide.
- Example 2 The procedure was analogous to Example 1, except that 0.2% by weight (based on the salt weight of a surfactant of the following composition) was used in the switch: 20% by weight sodium dodecylbenzenesulfonate 40 wt .-% sodium salt of C9-C18 fatty alcohol ether sulfate ad 100 wt .-% water
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Cosmetics (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Enzymes And Modification Thereof (AREA)
Claims (20)
- Procédé de pelanage de dépouilles et de peaux brutes en conservant les poils et en les détachant, comprenant une opération de trempe suivie d'une opération de pelanage avec immunisation des poils par prétraitement contrôlé par une substance alcaline,
caractérisé en ce quea) on traite les dépouilles et peaux brutes, pendant 4 à 48 h, dans un bain de trempe constitué par un liquide aqueux ayant un pH de 7 à 10,5 et contenant au moins un tenside T, puisb) dans une étape d'incubation, on traite les dépouilles et peaux brutes trempées par un liquide aqueux contenant des agents d'épilage EM pratiquement dépourvus de sulfure inorganique et à base de composés organiques du soufre à action réductrice RED-S et d'imprégnants HY, pendant 30 à 180 mn, de préférence pendant 45 à 90 mn, a un pH de 9 à 11, puisc) dans une phase d'immunisation, on fait agir sur les dépouilles et peaux brutes, pendant 1 à 12 h sous agitation, le liquide qui a été porté à un pH dans la gamme de 10 à 14 par addition de bases B, puisd) dans une étape de relâchement du poil, on fait agir sur les dépouilles et peaux brutes, pendant 30 à 180 mn dans la gamme de pH de 10 à 14, le liquide auquel a été ajouté du sulfure inorganique AS dans des proportions correspondant à 0,5-3% en poids par rapport au poids salé ou frais des dépouilles et peaux brutes, ete) le poil et la peau sont séparés l'un de l'autre etf) dans une étape de pelanage, les peaux nues ainsi obtenues sont pelanées à fond, avec addition d'eau, de substances alcalines et de produits auxiliaires de pelanage AH,étant spécifié que le liquide constitue chaque fois 50 à 500% en poids de la matière des dépouilles ou peaux brutes soumise au traitement. - Procédé selon la revendication 1, caractérisé en ce que le tenside T est utilisé dans des proportions de 0,1 à 1,0, de préférence de 0,1 à 0,3% en poids, par rapport au poids salé ou frais des dépouilles et peaux brutes.
- Procédé selon la revendication 1 ou 2, caractérisé en ce que le tenside T est un tenside neutre et/ou anionique.
- Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le bain de trempe contient au moins une enzyme protéolytique dans des proportions qui correspondent à 2000-20 000 unités Löhlein-Volhard par kg de poids salé ou frais des dépouilles et peaux brutes.
- Procédé selon la revendication 4, caractérisé en ce qu'on utilise un mélange de protéases bactériennes (par exemple de Bacillus subtilis), de protéases de champignons (par exemple d'Aspergillus parasiticus) et de protéases pancréatiques, la part des protéases bactériennes se situant entre 20 et 70% de l'activité totale.
- Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'on utilise, comme composés organiques du soufre à action réductrice RED-S, des composés de formule I
R₁ SH I
dans laquelle
R₁ est mis pour un reste alkyle éventuellement ramifié, éventuellement cyclique, à 2-24 atomes de carbone, en particulier à 2-18 atomes de carbone et notamment à 2-12 atomes de carbone, le reste alkyle pouvant être substitué par un groupement hydroxy ou thiol, ou pour un reste -(CH₂)p-NR₂ R₃,
où R₂ et R₃ sont mis chacun, indépendamment l'un de l'autre, pour un atome d'hydrogène ou un reste alkyle à 1-6 atomes de carbone ou forment ensemble, avec inclusion d'un autre atome d'azote, d'un atome d'oxygène ou d'un atome de soufre, un hérétocycle (de préférence saturé), et p est mis pour un nombre entier de 2 à 6,
ou pour un reste -R₄-COOR₅,
où R₄ est mis pour un reste alkyle à 2-6 atomes de carbone, éventuellement ramifié et éventuellement substitué par un autre groupement COOR₅,
-SH pouvant être relié à un atome de carbone primaire, secondaire ou tertiaire, et où
R₅ est mis pour un atome d'hydrogène ou un reste alkyle à 1-6 atomes de carbone,
ou l'acide formamidinesulfinique. - Procédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'on utilise, comme imprégnant HY, un composé de formule II
- Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'agent d'épilage EM contient en plus des amines de formule III
R₆NR₇R₈ III
dans laquelle R₆ est mis poour un reste alkyle à 1-8 atomes de carbone, éventuellement substitué par un groupement OH et éventuellement cyclique, et R₇ et R₈ sont mis chacun pour un atome d'hydrogène ou ont la même signification que R₁, ou dans laquelle R₇ et R₈ forment ensemble, avec l'atome d'azote et éventuellement avec un autre atome d'azote ou un atome d'oxygène, un hétérocycle à 5 ou 6 termes, étant spécifié qu'en présence d'un hétérocycle, R₆ peut être également mis pour un atome d'hydrogène. - Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que, dans l'étape d'incubation, on procède avec un nouveau liquide.
- Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'on utilise, comme base B dans la phase d'immunisation, de la chaux hydratée.
- Procédé selon la revendication 1, caractérisé en ce que le pelanage est effectué pendant 12 à 36 h en conservant le liquide et en y ajoutant de l'eau, une substance alcaline, des sulfures inorganiques et des produits auxiliaires de pelanage.
- Procédé selon l'une quelconque des revendications 1 à 10, caractérisé en ce qu'après l'achèvement de l'épilage et l'élimination du poil, le liquide est séparé des peaux nues et stocké pour être réutilisé.
- Procédé selon la revendication 12, caractérisé en ce que les peaux nues, débarrassées du liquide, sont traitées pendant 10 à 30 mn par de l'eau fraîche avec addition d'un agent neutralisant les substances alcalines.
- Procédé selon les revendications 12 et 13, caractérisé en ce que le liquide de lavage est recueilli et conservé pour être réutilisé.
- Procédé selon les revendications 12 et 13, caractérisé en ce que les peaux ainsi obtenues, qui ne sont que partiellement pelanées, sont écharnées et refendues.
- Procédé selon la revendication 12 ou 15, caractérisé en ce que la fleur obtenue par refendage est pelanée pendant 6 à 36 h dans le liquide à réutiliser selon la revendication 12, avec addition d'eau fraîche ou du liquide de lavage selon la revendication 14, de substance alcaline, de sulfures inorganiques et de produits auxiliaires de pelanage.
- Procédé selon la revendication 16, caractérisé en ce que le liquide formé au pelanage de la fleur de refendage est conservé pour être réutilisé.
- Procédé selon la revendication 15, caractérisé en ce que la croûte obtenue au refendage est pelanée pendant 6 à 36 h dans le liquide obtenu selon la revendication 17, avec addition de substances alcalines, éventuellement d'eau et d'oxydants en soi connus.
- Procédé selon la revendication 18, caractérisé en ce que les oxydants sont choisis dans le groupe constitué par les composés per, en particulier des peroxydes, les sels de fer (III), les sels de manganèse (II), les permanganates, les quinones, dans des proportions de 0,001 à 1% en poids, par rapport au poids de la croûte de refendage.
- Procédé selon l'une quelconque des revendications 1 à 19, caractérisé en ce que le procédé est exécuté à des températures dans la gamme de 20 à 30°C.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3802640A DE3802640A1 (de) | 1988-01-29 | 1988-01-29 | Haarerhaltendes aescherverfahren |
| DE3802640 | 1988-01-29 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0326059A2 EP0326059A2 (fr) | 1989-08-02 |
| EP0326059A3 EP0326059A3 (fr) | 1991-03-27 |
| EP0326059B1 true EP0326059B1 (fr) | 1994-09-28 |
Family
ID=6346234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89101120A Expired - Lifetime EP0326059B1 (fr) | 1988-01-29 | 1989-01-23 | Procédé de chaulage avec obtention de poils |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4960428A (fr) |
| EP (1) | EP0326059B1 (fr) |
| AT (1) | ATE112322T1 (fr) |
| BR (1) | BR8900352A (fr) |
| DE (2) | DE3802640A1 (fr) |
| ES (1) | ES2061743T3 (fr) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5525509A (en) * | 1991-03-26 | 1996-06-11 | Rohm Gmbh | Method for the enzymatic liming of skins and hides |
| US6063630A (en) * | 1991-11-05 | 2000-05-16 | Transkaryotic Therapies, Inc. | Targeted introduction of DNA into primary or secondary cells and their use for gene therapy |
| PT101031B (pt) * | 1991-11-05 | 2002-07-31 | Transkaryotic Therapies Inc | Processo para o fornecimento de proteinas por terapia genetica |
| DE4220838A1 (de) * | 1992-06-25 | 1994-01-05 | Roehm Gmbh | Verfahren zum Äschern von Häuten und Fellen |
| DK113692D0 (fr) * | 1992-09-16 | 1992-09-16 | Novo Nordisk As | |
| US5435808A (en) * | 1993-09-03 | 1995-07-25 | Birko Corporation | Hide raceway treatment and improved method of curing hides |
| DE4332785A1 (de) * | 1993-09-27 | 1995-03-30 | Roehm Gmbh | Verbessertes enzymunterstütztes Äscherverfahren |
| WO1996019590A1 (fr) * | 1994-12-21 | 1996-06-27 | Novo Nordisk A/S | Procede d'epilage de cuirs et de peaux au moyen d'enzymes |
| RU2174150C1 (ru) * | 2001-02-08 | 2001-09-27 | Государственное унитарное предприятие Центральный научно-исследовательский институт кожевенно-обувной промышленности | Способ обработки кожевенного сырья |
| RU2174151C1 (ru) * | 2001-02-08 | 2001-09-27 | Государственное унитарное предприятие Центральный научно-исследовательский институт кожевенно-обувной промышленности | Способ золения-обезволашивания кожевенного сырья |
| RU2198932C1 (ru) * | 2002-04-26 | 2003-02-20 | Федеральное государственное унитарное предприятие Центральный научно-исследовательский институт кожевенно-обувной промышленности | Способ обезволашивания кожевенного сырья |
| RU2206620C1 (ru) * | 2002-07-25 | 2003-06-20 | Зурабян Карапет Мхитарович | Дерма натуральной кожи и мехового полуфабриката и способы их выработки |
| US6708531B1 (en) * | 2002-10-30 | 2004-03-23 | Council Of Scientific And Industrial Research | Ecofriendly bio-process for leather processing |
| US7013838B2 (en) * | 2002-12-20 | 2006-03-21 | Frank Jay Hague | Bleached expanded pigskin and products |
| RU2225451C1 (ru) * | 2003-03-31 | 2004-03-10 | ФГУП "Центральный научно-исследовательский институт кожевенно-обувной промышленности" | Способ выработки натуральной ворсовой кожи |
| RU2222601C1 (ru) * | 2003-04-28 | 2004-01-27 | Московский государственный университет дизайна и технологии | Способ обработки кожевенного сырья |
| RU2233337C1 (ru) * | 2003-09-29 | 2004-07-27 | Федеральное государственное унитарное предприятие Центральный научно-исследовательский институт кожевенно-обувной промышленности | Способ обработки кожевенного сырья |
| RU2233336C1 (ru) * | 2003-09-29 | 2004-07-27 | Федеральное государственное унитарное предприятие Центральный научно-исследовательский институт кожевенно-обувной промышленности | Способ отмоки кожевенного сырья |
| US6957554B2 (en) * | 2003-11-18 | 2005-10-25 | Council Of Scientific And Industrial Research | Dehairing and fiber opening process for complete elimination of lime and sodium sulfide |
| US7670762B2 (en) * | 2006-01-17 | 2010-03-02 | Brennen Medical, Llc | Biocompatible tissue graft material for implant and method of making |
| RU2408736C1 (ru) * | 2009-10-09 | 2011-01-10 | Государственное научное учреждение Всероссийский научно-исследовательский институт пантового оленеводства Сибирского отделения Российской академии сельскохозяйственных наук (ГНУ ВНИИПО СО Россельхозакадемии) | Способ обезволашивания пантов маралов |
| CN102505057B (zh) * | 2011-10-21 | 2013-10-16 | 中国皮革和制鞋工业研究院 | 一种铬鞣废液的循环利用方法 |
| CN103343172B (zh) * | 2013-07-19 | 2015-04-08 | 四川大学 | 一种少硫酶助鳄鱼皮去鳞甲的方法 |
| CN105603133B (zh) * | 2015-12-23 | 2018-06-29 | 四川达威科技股份有限公司 | 一种原料皮脱毛方法 |
| EP3425069B1 (fr) * | 2017-07-06 | 2020-04-15 | Stahl International B.V. | Procédé de déchaulage |
| CN109593898B (zh) * | 2019-01-18 | 2021-07-16 | 陕西科技大学 | 一种基于生物质基的具有反应活性的两性复鞣剂及其制备方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB922271A (en) * | 1960-06-23 | 1963-03-27 | Roehm & Haas Gmbh | Improvements in or relating to the dehairing of hides and skins |
| DE2053016C3 (de) * | 1970-10-29 | 1973-11-29 | Roehm Gmbh, 6100 Darmstadt | Verfahren zum Aschern von tierischen Fellen und Hauten oder zum Nachaschern enzymatisch enthaarter Bloßen |
| ES421535A1 (es) * | 1973-01-13 | 1976-06-16 | Roehm Gmbh | Procedimiento para la preparacion de pellejos dispuestos para curtir a partir de cuero y pieles de origen animal. |
| DE2917376C2 (de) * | 1979-04-28 | 1987-03-26 | Röhm GmbH, 6100 Darmstadt | Enzymatisches Verfahren zur Haargewinnung und zum gleichzeitigen Hautaufschluß |
| DE2929844A1 (de) * | 1979-07-23 | 1981-02-26 | Roehm Gmbh | Weichverfahren |
| DE2944461A1 (de) * | 1979-11-03 | 1981-05-14 | Röhm GmbH, 6100 Darmstadt | Verfahren zum weichen von fellen und haeuten |
| DE3612791C2 (de) * | 1986-04-16 | 1997-01-16 | Roehm Gmbh | Polymethacrylatformmasse mit hoher Wärmeformbeständigkeit und hoher thermischer Stabilität, Verfahren zu ihrer Herstellung und ihre Verwendung zur Herstellung von Formkörpern |
| DE3617448A1 (de) * | 1986-05-23 | 1987-11-26 | Roehm Gmbh | Enthaarung tierischer haeute im durchlaufverfahren |
-
1988
- 1988-01-29 DE DE3802640A patent/DE3802640A1/de not_active Withdrawn
-
1989
- 1989-01-23 DE DE58908425T patent/DE58908425D1/de not_active Expired - Fee Related
- 1989-01-23 AT AT89101120T patent/ATE112322T1/de not_active IP Right Cessation
- 1989-01-23 ES ES89101120T patent/ES2061743T3/es not_active Expired - Lifetime
- 1989-01-23 EP EP89101120A patent/EP0326059B1/fr not_active Expired - Lifetime
- 1989-01-26 US US07/303,270 patent/US4960428A/en not_active Expired - Lifetime
- 1989-01-27 BR BR898900352A patent/BR8900352A/pt not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0326059A2 (fr) | 1989-08-02 |
| ES2061743T3 (es) | 1994-12-16 |
| DE3802640A1 (de) | 1989-08-03 |
| EP0326059A3 (fr) | 1991-03-27 |
| DE58908425D1 (de) | 1994-11-03 |
| US4960428A (en) | 1990-10-02 |
| ATE112322T1 (de) | 1994-10-15 |
| BR8900352A (pt) | 1989-09-19 |
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