DE4227184C2 - Impregnation agent for the production of papers with high penetration resistance against fats, oils and aqueous media and process for its production - Google Patents
Impregnation agent for the production of papers with high penetration resistance against fats, oils and aqueous media and process for its productionInfo
- Publication number
- DE4227184C2 DE4227184C2 DE19924227184 DE4227184A DE4227184C2 DE 4227184 C2 DE4227184 C2 DE 4227184C2 DE 19924227184 DE19924227184 DE 19924227184 DE 4227184 A DE4227184 A DE 4227184A DE 4227184 C2 DE4227184 C2 DE 4227184C2
- Authority
- DE
- Germany
- Prior art keywords
- percent
- polyvinyl alcohol
- production
- alcohol solution
- mass
- 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 - Fee Related
Links
Classifications
-
- 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
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/07—Nitrogen-containing compounds
-
- 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
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- 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
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/10—Phosphorus-containing compounds
-
- 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
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/11—Halides
-
- 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
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/17—Ketenes, e.g. ketene dimers
-
- 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
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/36—Polyalkenyalcohols; Polyalkenylethers; Polyalkenylesters
-
- 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
- D21H17/53—Polyethers; Polyesters
-
- 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
- D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
- D21H17/57—Polyureas; Polyurethanes
-
- 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
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
- D21H21/20—Wet strength agents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Description
Die Erfindung betrifft ein Mittel zur Herstellung von imprägnierten Papieren innerhalb oder außerhalb der Pa piermaschine, mit welchem dem Papier auf dem Wege der Oberflächenveredlung hohe Durchdringungswiderstände ge gen Fette, Öle und wäßrige Medien verliehen werden.The invention relates to an agent for the production of impregnated papers inside or outside the pa piercing machine, with which the paper on the way of Surface finishing high penetration resistance against fats, oils and aqueous media.
Bekannt sind verschiedene technische Verfahren zur fett- und wasserdichten Ausrüstung von Papieren innerhalb und außerhalb der Papiermaschine. Innerhalb der Papiermaschi ne werden zu diesem Zweck Kombinationen von Stärkelösun gen und/oder Polyvinylalkohollösungen mit Zusätzen von Fluorchemikalien, synthetischen Hydrophobierungsmitteln, wie Alkylketendimerleime und/oder Copolymerisatleime aus Styrol- und Butylacrylaten unter Zusatz verschiedener Vernetzer, wie Glyoxal, Melaminformaldehydharze bzw. Epi chlorhydrinharze verwendet.Various technical processes for fat and waterproof finishing of papers inside and outside the paper machine. Inside the paper machine For this purpose, combinations of starch solutions are used gene and / or polyvinyl alcohol solutions with additions of Fluorochemicals, synthetic water repellents, such as alkyl ketene dimer glues and / or copolymer glues Styrene and butyl acrylates with the addition of various Crosslinkers, such as glyoxal, melamine formaldehyde resins or epi chlorohydrin resins used.
Diese Zusammensetzung von Imprägniermedien gestattet zwar die Herstellung von Papieren mit hoher Fettdichte, jedoch die Wasserdichte entspricht oft noch nicht den anwen dungstechnischen Forderungen.This composition of impregnation media allows the production of high fat density papers, however the waterproofness often does not yet meet the requirements manure requirements.
Bekannt sind weiterhin Imprägniermedien zur Beschichtung von Papieren innerhalb und außerhalb von Papiermaschinen, die Silikonöldispersionen und/oder Silikonwachsdispersio nen enthalten. Mit diesen Imprägnierungen werden dem Pa pier zwar sehr gute Durchdringungswiderstände gegen Fet te, Öle und auch wäßrige Medien verliehen, jedoch nehmen die so behandelten Papiere keine Klebstofflösungen mehr an und sind somit anwendungstechnisch nicht für die Herstellung von Verbundmaterialien geeignet. Bekannt sind weiterhin Verfahren zur fett- und wasser dichten Veredlung von Papieren außerhalb der Papierma schine, bei denen die Dichtheitsmerkmale durch Disper sions- oder Extrusionsbeschichtungen oder auch durch Kaschieren mit Metall- oder Plastikfolien oder auch durch Bedampfen mit Metall erreicht werden. Alle diese Verfahren und Mittel bewirken zwar hohe Durchdringungs widerstände gegen Fette, Öle und wäßrige Medien, er schweren jedoch stark die Recyclefähigkeit der Produkte.Impregnation media for coating are also known of papers inside and outside of paper machines, the silicone oil dispersions and / or silicone wax dispersions contain. With these impregnations, the Pa pier very good penetration resistance against FET te, oils and also aqueous media lent, but take the papers treated in this way no longer have any adhesive solutions and are therefore not technically suitable for Production of composite materials suitable. Processes for fat and water are also known dense finishing of paper outside the paper size machine, in which the tightness characteristics by Disper sions- or extrusion coatings or through Laminating with metal or plastic foils or also can be achieved by vapor deposition with metal. All these Procedures and means cause high penetration resistance to fats, oils and aqueous media, he however, severely impair the recyclability of the products.
Die Erfindung hat zum Ziel, ein Imprägniermittelsystem zu gestalten zur Herstellung von fett-, öl- und wasser dichten, recyclebaren Papieren innerhalb und außerhalb der Papiermaschine.The aim of the invention is an impregnation system to be designed for the production of fat, oil and water dense, recyclable papers inside and outside the paper machine.
Der Erfindung liegt die Aufgabe zugrunde, ein Imprägnier medium zur Herstellung von fettdichten, öldichten, was serdichten und dennoch recyclebaren Papieren innerhalb und außerhalb der Papiermaschine zu entwickeln, das ge genüber dem Stand der Technik von innerhalb der Papier maschine angewendeten Imprägniermedien, bei Beibehaltung der Fettdichte, einen erhöhten Durchdringungswiderstand gegen Wasser bewirkt und dennoch ein ausreichende Auf nahmefähigkeit für Kaschierklebstoffe sichert.The invention has for its object an impregnation medium for the production of fat-tight, oil-tight, what dense, yet recyclable papers within and to develop outside the paper machine, the ge compared to the state of the art from within the paper machine applied impregnation media, with retention fat density, increased penetration resistance against water and yet sufficient opening ability to take laminate adhesives.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß einer vorbereiteten Polyvinylalkohollösung mit einer Konzentration von 2 bis 6 Masseprozent, vorzugsweise 3 Masseprozent, 3 bis 10 Volumenprozent, bezogen auf die Polyvinylalkohollösung, vorzugsweise 6 Volumenprozent, einer anionischen aliphatisch-aromatischen Polyester- Polyurethan-Dispersion der Shore A-Härte von 40 bis 60 und des Molmassenbereiches von 10 000 bis 30 000 und einer Konzentration von 40 Masseprozent zugegeben und eingemischt werden, daß der nun vorliegenden Mischung eine gesondert vorbereitete Mischung, bestehend aus 5 bis 20 Masseprozent, bezogen auf Polyvinylalkohol, vor zugsweise 15 Masseprozent, in Methanol angeteigter hy drophobierter Fällungskieselsäure und 1 bis 3 Volumen prozent, bezogen auf die Polyvinylalkohollösung, vorzugs weise 2 Volumenprozent, einer anionischen Akylketendimer-Dis persion mit einer Konzentration von 11 Masseprozent und einer Teilchengröße von 0,2 bis 0,9 Micrometer zugesetzt und gut eingemischt wird, der nun vorliegenden Mischung 0,5 bis 3 Volumenprozent, bezogen auf die Polyvi nylalkohollösung, vorzugsweise 2 Volumenprozent, einer anionischen Perfluoralkylethylphosphat-Diethanolammoni umsalzlösung in Isopropylalkohol mit einer Konzentration von 33 Masseprozent zugegeben und eingemischt werden und daß abschließend der nun vorliegenden Mischung 0,2 bis 1 Volumenprozent, bezogen auf die Polyvinylalkohollösung, vorzugsweise 0,5 Volumenprozent, Glyoxal zugesetzt und eingemischt werden und diese Gesamtmischung zur Pa pierimprägnierung innerhalb der Papiermaschine verwendet wird.According to the invention the object is achieved in that a prepared polyvinyl alcohol solution with a Concentration of 2 to 6 percent by mass, preferably 3 Mass percent, 3 to 10 volume percent, based on the Polyvinyl alcohol solution, preferably 6 percent by volume, an anionic aliphatic-aromatic polyester Shore A hardness polyurethane dispersion from 40 to 60 and the molecular weight range from 10,000 to 30,000 and added to a concentration of 40 mass percent and be mixed in that the present mixture a separately prepared mixture consisting of 5 up to 20 percent by mass, based on polyvinyl alcohol preferably 15 percent by mass, hy hydrophobic precipitated silica and 1 to 3 volumes percent, based on the polyvinyl alcohol solution, preferred example 2 volume percent, an anionic Akylketendimer-Dis persion with a concentration of 11 mass percent and a particle size of 0.2 to 0.9 microns added and mixed well, the present one Mixture 0.5 to 3 volume percent, based on the Polyvi nyl alcohol solution, preferably 2 volume percent, one anionic perfluoroalkyl ethyl phosphate diethanolammoni Salt solution in isopropyl alcohol with a concentration of 33 percent by mass are added and mixed in that finally the mixture 0.2 to 1 Volume percent, based on the polyvinyl alcohol solution, preferably 0.5 volume percent, glyoxal added and mixed in and this total mixture to the Pa pier impregnation used within the paper machine becomes.
Die Verwendung dieses Imprägniermediums zur Imprägnierung von Papier innerhalb der Papiermaschine mit einem der bekannten Auftragsverfahren und anschließender Trocknung in der Nachtrockenpartie gestattet die Herstellung von fett- und öldichten, recyclebaren Papieren, die zudem infolge der anteiligen Verwendung einer anionischen Poly ester-Polyurethan-Dispersion und einer hydrophobierten Fällungskieselsäure einen sehr hohen Durchdringungswider stand gegen wäßrige Medien besitzen.The use of this impregnation medium for impregnation of paper inside the paper machine with one of the known application process and subsequent drying allows the production of grease and oil-tight, recyclable papers that also due to the proportionate use of an anionic poly ester polyurethane dispersion and a hydrophobized Precipitated silica has a very high penetration resistance stood against aqueous media.
Die Erfindung soll nachstehend an Beispiel 1 erläutert werden, das Beispiel 2 dient dem Vergleich mit dem Stand der Technik. The invention is illustrated below using Example 1 Example 2 is for comparison with the stand of the technique.
Die am fertigen Papier ermittelten maßgeblichen Prüfer gebnisse sind aus der Tabelle 1 ersichtlich. Die in den Beispielen 1 und 2 beschriebenen Imprägniermedien werden mit einer Leimpresse in einer Papiermaschine auf unge leimtes Rohpapier mit einem Mahlgrad des Stoffes von 40 bis 42°SR, einem Flächengewicht von 50 g/m² und bei einer Geschwindigkeit von 350 m/min beidseitig aufgetragen und sofort anschließend in der Nachtrockenpartie getrocknet. Das Auftragsgewicht beträgt ca. 1,2 g/m² auf jeder Seite des Papiers.The relevant inspectors identified on the finished paper Results are shown in Table 1. The in the Examples 1 and 2 described impregnation media with a size press in a paper machine glued base paper with a freeness of 40 up to 42 ° SR, a basis weight of 50 g / m² and at a Speed of 350 m / min applied on both sides and then immediately dried in the after-dryer section. The application weight is approx. 1.2 g / m² on each side of the paper.
Beim Vergleich der maßgeblichen Papierprüfwerte der Ta belle 1 läßt sich feststellen, daß sich infolge der zu sätzlichen Verwendung von hydrophobierter Fällungskiesel säure und von einer anionischen Polyester-Polyurethan-Dis persion gegenüber dem Stand der Technik erhebliche Verbesserungen im Durchdringungswiderstand des Papieres gegen Wasser ergeben.When comparing the relevant paper test values of Ta belle 1 can be seen that as a result of additional use of hydrophobic precipitated pebbles acid and from an anionic polyester-polyurethane dis persion significant compared to the prior art Improvements in paper penetration resistance surrendered to water.
Claims (2)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924227184 DE4227184C2 (en) | 1992-08-17 | 1992-08-17 | Impregnation agent for the production of papers with high penetration resistance against fats, oils and aqueous media and process for its production |
PCT/DE1993/000724 WO1994004753A1 (en) | 1992-08-17 | 1993-08-12 | Impregnating agent for producing papers with high resistance to the penetration of grease, oil and aqueous media |
AU49416/93A AU4941693A (en) | 1992-08-17 | 1993-08-12 | Impregnating agent for producing papers with high resistance to the penetration of grease, oil and aqueous media |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19924227184 DE4227184C2 (en) | 1992-08-17 | 1992-08-17 | Impregnation agent for the production of papers with high penetration resistance against fats, oils and aqueous media and process for its production |
Publications (2)
Publication Number | Publication Date |
---|---|
DE4227184A1 DE4227184A1 (en) | 1994-02-24 |
DE4227184C2 true DE4227184C2 (en) | 1997-09-25 |
Family
ID=6465721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19924227184 Expired - Fee Related DE4227184C2 (en) | 1992-08-17 | 1992-08-17 | Impregnation agent for the production of papers with high penetration resistance against fats, oils and aqueous media and process for its production |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU4941693A (en) |
DE (1) | DE4227184C2 (en) |
WO (1) | WO1994004753A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4407878C2 (en) * | 1994-03-09 | 1996-07-04 | Bernhard Dettling | Aroma and vapor barrier coated paper or cardboard |
CA2146726A1 (en) * | 1994-05-18 | 1995-11-19 | Susan S. Harrison | Fluorine-containing phosphates |
ES2114255T3 (en) | 1995-09-08 | 1998-05-16 | Bernhard Dettling | PROCEDURE FOR THE COATING OF PAPER OR CARDBOARD. |
CA2377080A1 (en) * | 1999-06-11 | 2001-02-15 | Unidur Gmbh | Composition for the impregnation of paper, method for the production thereof, impregnated paper and laminate comprising said impregnated paper |
SE520187C2 (en) | 2001-10-09 | 2003-06-10 | Tetra Laval Holdings & Finance | Laminated packaging material, method of preparation and packaging container made of the packaging material |
ITFI20120031A1 (en) * | 2012-02-21 | 2013-08-22 | Francesco Toschi | WATERPROOF COUPLED FOR FOOD USE |
DE102012206832A1 (en) * | 2012-04-25 | 2013-10-31 | Kuraray Europe Gmbh | Polyvinyl alcohols as a mineral oil barrier in paper and cardboard |
CN102926290A (en) * | 2012-11-01 | 2013-02-13 | 福建希源纸业有限公司 | Transfer printing paper product and manufacturing method thereof |
CN104018393B (en) * | 2014-06-12 | 2016-01-20 | 苏州经贸职业技术学院 | A kind of macromolecule sizing agent and preparation method thereof |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD290106A7 (en) * | 1985-11-06 | 1991-05-23 | Vereinigte Papier- U. Kartonfabriken Niederschlema,Werk Faehrbruecke,De | METHOD FOR PRODUCING MINERALOELIMPEGRATED LOCHBAND PAPER |
DE3545195A1 (en) * | 1985-12-20 | 1987-06-25 | Hoechst Ag | ISOCYANATE-FREE POLYURETHANE DISPERSIONS |
DE3920379A1 (en) * | 1989-06-22 | 1991-01-03 | Heinr Aug Schoeller Soehne Gmb | METHOD FOR TREATING THE SURFACE OF A NATURAL PAPER |
GB8920456D0 (en) * | 1989-09-11 | 1989-10-25 | Albright & Wilson | Active sizing compositions |
DE4001237A1 (en) * | 1990-01-18 | 1991-07-25 | Basf Ag | STABILIZED AQUEOUS ALKYLDICETE EMULSIONS |
ES2019237A6 (en) * | 1990-03-15 | 1991-06-01 | Nacional Moneda Timbre | Process for the manufacture of paper |
EP0462063A1 (en) * | 1990-06-13 | 1991-12-18 | Ciba-Geigy Ag | Fluorinated paper sizes |
-
1992
- 1992-08-17 DE DE19924227184 patent/DE4227184C2/en not_active Expired - Fee Related
-
1993
- 1993-08-12 AU AU49416/93A patent/AU4941693A/en not_active Abandoned
- 1993-08-12 WO PCT/DE1993/000724 patent/WO1994004753A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
DE4227184A1 (en) | 1994-02-24 |
WO1994004753A1 (en) | 1994-03-03 |
AU4941693A (en) | 1994-03-15 |
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Legal Events
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |