EP0862671A1 - Verfahren zum konservieren von papier - Google Patents
Verfahren zum konservieren von papierInfo
- Publication number
- EP0862671A1 EP0862671A1 EP96941012A EP96941012A EP0862671A1 EP 0862671 A1 EP0862671 A1 EP 0862671A1 EP 96941012 A EP96941012 A EP 96941012A EP 96941012 A EP96941012 A EP 96941012A EP 0862671 A1 EP0862671 A1 EP 0862671A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- groups
- paper
- atoms
- organic
- carbon
- 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.)
- Granted
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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/18—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00 of old paper as in books, documents, e.g. restoring
Definitions
- M comprises the main groups III to V and the subgroups II to IV of the Periodic Table of the Elements, in these polycondensates at least 0.1% of the central atoms M at least one organic group G, the at least 2 carbon atoms, each having at least one of hydrogen and fluorine atoms is selected atom, includes and has no polar substituents, either directly through one of the carbon atoms or through a linking group A; and
- paper is understood to mean products based on matted plant fibers, in particular based on cellulose, wood pulp, straw cellulose, rag pulp and waste paper pulp.
- this term includes graphic papers (such as writing and printing papers).
- other products such as For example, kraft paper, cardboard and cardboard are treated, although in the latter cases effective preservation will not be necessary in most cases.
- the above elements M from the main groups III to V and the subgroups II to IV of the periodic table of the elements are e.g. by at least one element selected from silicon, aluminum, boron, tin, zirconium, vanadium and tin, Si, Al and Zr being preferred.
- preferably 75 to 100 and particularly preferably 90 to 100% of all central atoms of the polycondensates present in the coating composition are silicon, aluminum and / or zirconium atoms.
- At least 0.1% (preferably at least 0.5% and in particular at least 1%) of all central atoms M present in the above polycondensates M are bound to organic groups G which have at least 2
- These groups G are preferably partially fluorinated aliphatic groups, in particular alkyl and / or alkenyl groups. These groups can e.g. around those of long chain, saturated or unsaturated fatty acids such as e.g. Palmitic acid,
- Examples of partially fluorinated groups G which can be used according to the invention (and are also preferred according to the invention) are groups which have aliphatic carbon atoms to which a total of 2 to 30 (preferably 3 to 25, more preferably 5 to 20 and particularly preferably 8 to 18) fluorine atoms are bound, and which (at least in the case of direct binding of G to M) each by at least 2 atoms (preferably
- Carbon atoms are separated from the central atom M.
- fluorine-containing group can also be a chelating ligand. It is also possible for one or more fluorine atoms to be located on a carbon atom from which a double or triple bond originates.
- fluorine-containing, non-hydrolyzable groups are preferred, which are preferably bonded to silicon atoms. Specific examples of such fluorine-containing, non-hydrolyzable groups are, for example:
- nC 8 F 13 CH 2 CH 2 -, nC 8 F 17 CH 2 CH 2 - and nC 10 F 21 CH 2 CH 2 - are particularly preferred.
- other fluorine-containing groups G can also be used according to the invention, as can mixtures of different fluorine-containing groups G.
- Fluorine-containing polycondensates as can be used according to the invention, and their preparation are described in detail in WO92 / 21729 (EP-A-587 667). Reference is therefore expressly made to the entire disclosure of this application. This application also specifies specific compounds suitable for producing the polycondensates used according to the invention, in particular Si, Al and Zr.
- Group understood that is in principle accessible to hydrolysis, but actually does not hydrolyze under the given conditions in the production of the polycondensates, the treatment of the paper and the subsequent drying and / or curing.
- Examples of the latter groups can also include, for example, the above chelating groups A.
- One or two (preferably one) non-hydrolyzable or non-hydrolyzing groups are preferably bonded to 50 to 100 and in particular 75 to 100% of the central atoms M in the polycondensates.
- These groups may for example be selected from alkyl (especially C ⁇ _ 4 alkyl, such as methyl, ethyl, propyl and butyl), alkenyl (in particular C 2 _ 4 alkenyl, such as vinyl, 1-propenyl, 2-propenyl, and Butenyl), alkynyl (especially C 2 _ 4 -alkynyl, such as ethynyl and propynyl) and aryl (especially C g _ 1Q- aryl, such as phenyl and Naphthyl), where the groups just mentioned or at least those which differ from group G may optionally have one or more substituents, such as chlorine, bromine, hydroxyl, alkoxy, epoxy, (optionally substituted) amino, etc.
- substituents such as chlorine, bromine, hydroxyl, alkoxy, epoxy, (optionally substituted) amino, etc.
- Alkyl radicals also include the corresponding cyclic and aryl-substituted radicals, such as cyclohexyl and benzyl, while the alkenyl and alkynyl groups may also be cyclic and the aryl groups mentioned should also include alkaryl groups (such as tolyl and xylyl).
- Particularly preferred groups are groups H 'which have an (optionally multiply) unsaturated carbon-carbon bond and / or have a highly reactive functional group such as epoxy.
- unsaturated groups are in particular to be mentioned groups, acryloxy a (meth) (particularly a (meth) acryloxy-C 1 _ 4 alkyl, such as (meth) acryloxypropyl) feature.
- the presence of such groups in the corresponding polycondensates has the advantage that after treatment of the paper with the
- Preservation liquid can be hardened twice, namely a thermally or photochemically induced linkage of the unsaturated organic residues by (radical) polymerization (or a ring opening polymerization in the case of epoxy rings) and a thermal completion of the polycondensation (for example by elimination of water from M-OH) Groups) .
- the (partially) hydrolyzable starting compounds used to prepare the preservation liquid or polycondensates used according to the invention are those of elements of main groups III to V and subgroups II to IV of the periodic table.
- other hydrolyzable compounds can also be used, in particular those of elements of main groups I and II of the periodic table (eg Na, K, Ca and Mg) and subgroups V to VIII of the periodic table.
- the compounds just mentioned preferably make up no more than 10 and in particular no more than 5 mol percent of the hydrolyzable monomeric compounds used overall.
- hydrolyzable groups in the starting compounds are - depending in part on the central atom M - halogen (F, Cl, Br and I, in particular Cl and Br), alkoxy (in particular C 1 _ 4 -alkoxy, such as methoxy, ethoxy, n-propoxy, i-propoxy and butoxy), aryloxy (in particular C g _ 1Q- aryloxy, for example phenoxy), acyloxy (in particular C 1 _ 4 -acyloxy, for example acetoxy and propionyloxy) and acyl (for example acetyl).
- halogen F, Cl, Br and I, in particular Cl and Br
- alkoxy in particular C 1 _ 4 -alkoxy, such as methoxy, ethoxy, n-propoxy, i-propoxy and butoxy
- aryloxy in particular C g _ 1Q- aryloxy, for example phenoxy
- acyloxy in particular C 1 _ 4
- hydrolyzable groups which may also be mentioned are hydrogen and alkoxy radicals having 5 to 20, in particular 5 to 10, carbon atoms and halogen- and alkoxy-substituted alkoxy groups (e.g. ⁇ -methoxyethoxy).
- hydrolysis (and condensation) are lost, with the Sooner or later, hydrolysis products may also have to be removed in any suitable manner (especially if such a hydrolysis product in the preservation liquid used according to the invention would have an unfavorable influence on the paper or its components to be preserved), those hydrolyzable groups which do not carry any substituents are particularly preferred and lead to low molecular weight hydrolysis products such as lower alcohols such as methanol, ethanol, propanol and butanols. The latter hydrolysable groups are also preferred because they have practically no influence on the pH during hydrolysis (in contrast to, for example, halogen).
- preservation liquid used according to the invention which of course have no harmful influence on the paper to be preserved or its constituents (such as glue, filler and Dyes, resins, etc.) and the substances applied to the paper (e.g. printing ink, ink, graphite, etc.).
- the preservation liquid used according to the invention will contain a solvent for adjusting the viscosity of the preservation liquid.
- This solvent can be water and / or organic solvents.
- the organic solvents include, in particular, the lower alcohols, such as methanol, ethanol, propanol and the butanols, since these are usually already formed as by-products of the polycondensation reaction using the preferred starting materials (see above).
- mixtures of Solvents are used, for example mixtures of the by-products formed by the hydrolysis reaction (for example alcohols) and other (preferably volatile) solvents such as for example ethers, ketones, esters and (aliphatic or aromatic) hydrocarbons.
- the total solids content of the preservation liquid used according to the invention is generally 10 to 75, preferably 15 to 50 and particularly preferably 20 to 40 percent by weight.
- the preservation liquid can also contain compounds, that can react with such groups or groupings in the context of a thermally or photochemically induced reaction.
- the preservation liquid can also contain compounds, that can react with such groups or groupings in the context of a thermally or photochemically induced reaction.
- Groups with carbon-carbon double or triple bond prove to be expedient to add organic unsaturated compounds to the preservation liquid, which can then copolymerize with these unsaturated groups of the polycondensates.
- organic unsaturated compounds are styrene, acrylic acid, methacrylic acid or corresponding derivatives (eg esters, amides, nitriles) of the acids just mentioned.
- Such compounds can also be partially or perfluorinated.
- the preservation liquid can contain compounds which have (per) fluorinated groups which react with non-hydrolyzable or non-hydrolyzing non-fluorinated groups during the preparation of the preservation liquid or the polycondensates and thereby provide fluorinated groups (for example by reaction of SH - or NH groups with hexafluoropropene oxide).
- the preservation liquid can contain compounds which have a (catalytic)
- Ring opening polymerization e.g. Compounds containing hydroxyl and amine groups (e.g. phenols).
- the preservation liquid preferably also contains a catalyst for the thermally and / or photochemically induced curing of the polycondensates applied to the paper.
- a catalyst for the thermally and / or photochemically induced curing of the polycondensates applied to the paper preferably also contains a catalyst for the thermally and / or photochemically induced curing of the polycondensates applied to the paper.
- a photopolymerization initiator can be added.
- the commercially available photoinitiators can be used, for example.
- Irgacure 184 (1-hydroxycyclohexylphenyl ketone), Irgacure (R) 500 (1-hydroxycyclohexylphenyl ketone, benzophenone) and other Irgacure (R) type photoinitiators available from Ciba-Geigy; Darocur (R) 1173, 1116, 1398, 1174 and 1020 (available from Merck), benzophenone, 2-chlorothioxanthone, 2-methylthioxanthone, 2-isopropylthioxanthone, benzoin, 4,4'-dimethoxybenzoin, benzoin ethyl ether, benzoin isopropyl ether, Benzyldimethylketal, 1,1, 1-trichloroacetophenone, diethoxyacetophenone and dibenzosuberone.
- Suitable thermal initiators include organic peroxides in the form of diacyl peroxides,
- Peroxydicarbonates, alkyl peresters, dialkyl peroxides, perketals, ketone peroxides and alkyl hydroperoxides come into question.
- thermal initiators are dibenzoyl peroxide, tert-butyl perbenzoate and azobisisobutyronitrile.
- Preservation liquid e.g. tertiary amines (e.g. imidazole and its derivatives).
- a preservation liquid containing 30 to 50 percent by weight solid may contain initiator in an amount of e.g. 0.5 to 2 percent by weight (based on the total amount) can be added.
- the preservation liquid preferably also contains at least one substance that (at least partially) neutralizes the acid contained in the paper, i.e. a deacidifying agent and / or a buffer.
- a deacidifying agent i.e. a deacidifying agent
- a buffer i.e. a substance that (at least partially) neutralizes the acid contained in the paper.
- all compounds known to the person skilled in the art for the neutralization of acid are suitable, provided that they carry out the subsequent reactions (e.g.
- the preservation liquid produced can come into contact with the paper either as such or after partial or almost complete removal of the solvent used or of the solvent formed during the reaction (for example the alcohols formed by hydrolysis of the alkoxides) and / or after addition of a suitable solvent in order to lower the viscosity to be brought. No later than before the preservative liquid is used, additives which are still customary (not harmful to the paper and its components), such as, for example, colorants, oxidation inhibitors, leveling agents, UV absorbers and the like, can be added.
- the preserving liquid optionally (and preferably) provided with an initiator and optionally other additives, is then brought into contact with the paper, preferably by immersing the paper in the preserving liquid. Before drying and / or hardening, excess is left
- Preservative liquid preferably removed (e.g. by draining or squeezing). Drying takes place at room temperature or slightly elevated temperature.
- the preserving liquid impregnating the paper can be cured thermally and / or by irradiation in a manner known per se.
- the curing temperatures are preferably at least 50 ° C., in particular at least 90 ° C.
- the maximum curing temperature is determined, among other things, by the thermal load capacity of the paper to be treated. Curing temperatures of 180 ° C. and in particular 150 ° C. are preferably not exceeded.
- the Hardening time is usually 1 to 2 hours.
- Example 1 was repeated, except that no bisphenol S was used.
- 3-Methacryloxypropyltrimethoxysilane and 5.1 g (0.01 mol) of FTS were added with stirring to 17 g (0.94 mol) of water, and the resulting mixture was heated under reflux for 24 hours.
- the then single-phase solution was diluted with 100, 150 or 200 g of ethanol and then with 0.16 g (0.001 mol) of azobisisobutyronitrile (AIBN) as
- Example 3 The procedure of Example 3 was repeated, except that an additional 1.8 g (0.01 mole)
- 3-aminopropyltrimethoxysilane were used and the amount of water added was 17.8 g (0.99 mol).
- the sheets did not stick to each other or to the glass plate at the specified dilutions.
- Example 5 The procedure of Example 5 was repeated, except that an additional 7.2 g (0.04 mol) of 3-aminopropyltrimethoxysilane was used and the amount of water used was 15.1 g (0.84 mol).
- the sheets did not stick to each other or to the glass plate.
Landscapes
- Paper (AREA)
- Laminated Bodies (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19543707 | 1995-11-23 | ||
DE19543707A DE19543707A1 (de) | 1995-11-23 | 1995-11-23 | Verfahren zum Konservieren von Papier |
PCT/EP1996/005176 WO1997019224A1 (de) | 1995-11-23 | 1996-11-22 | Verfahren zum konservieren von papier |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0862671A1 true EP0862671A1 (de) | 1998-09-09 |
EP0862671B1 EP0862671B1 (de) | 2000-04-05 |
Family
ID=7778242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96941012A Expired - Lifetime EP0862671B1 (de) | 1995-11-23 | 1996-11-22 | Verfahren zum konservieren von papier |
Country Status (8)
Country | Link |
---|---|
US (1) | US6071475A (de) |
EP (1) | EP0862671B1 (de) |
AT (1) | ATE191525T1 (de) |
DE (2) | DE19543707A1 (de) |
ES (1) | ES2144275T3 (de) |
GR (1) | GR3033765T3 (de) |
PT (1) | PT862671E (de) |
WO (1) | WO1997019224A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EA004082B1 (ru) * | 1998-04-07 | 2003-12-25 | См Швайцерише Муниционсунтернеймунг Аг | Активное вещество для удаления кислотности печатного материала |
JP2000212443A (ja) * | 1999-01-27 | 2000-08-02 | Toagosei Co Ltd | 光カチオン硬化性樹脂組成物 |
US6800176B1 (en) * | 1999-06-17 | 2004-10-05 | E. I. Du Pont De Nemours And Company | Preservation of paper and textile materials |
IL146189A0 (en) * | 1999-06-17 | 2002-07-25 | Du Pont | Preservation of paper and textile materials |
DE10050064A1 (de) * | 2000-10-10 | 2002-04-25 | Fraunhofer Ges Forschung | Verfahren zur Herstellung Fluoroalkyl funktionalisierter Silanbeschichtungen |
DE10057554B4 (de) * | 2000-11-21 | 2007-05-24 | Zfb Project-Management Gmbh | Festigungs- und/oder Stabilisierungsmittel, Verfahren zur Festigung/Stabilisierung und Verwendung |
AU2002335489B2 (en) * | 2001-03-01 | 2008-06-05 | Abbott Laboratories | Polymorphic and other crystalline forms of cis-FTC |
DE10163344B4 (de) * | 2001-12-21 | 2006-01-19 | Papierfabrik Schoeller & Hoesch Gmbh & Co. Kg | Lichtbeständiges Overlaypapier, Verfahren zu dessen Herstellung und Verwendung desselben |
DE10343047B4 (de) * | 2003-09-16 | 2008-08-07 | Zfb Project-Management Gmbh | Antioxidationsmittel für organisches Material und Verfahren zur Behandlung desselben |
SK287845B6 (sk) | 2007-09-18 | 2012-01-04 | Stu Fakulta Chemickej A Potravinarskej Technologie | Multifunction device for modification of cellulose materials and method for modification of cellulose materials |
CN104652172B (zh) * | 2015-02-04 | 2017-06-13 | 广州乾程化工科技发展有限公司 | 一种纸质历史文物脱酸与加固保护材料的制备方法 |
CN108130813A (zh) * | 2017-12-01 | 2018-06-08 | 蒋春霞 | 一种抗起皱型纸质用脱酸加固剂的制备方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4049861A (en) * | 1975-03-07 | 1977-09-20 | Minnesota Mining And Manufacturing Company | Abrasion resistant coatings |
US4619949A (en) * | 1984-08-17 | 1986-10-28 | Minnesota Mining And Manufacturing Company | Abrasion resistant coatings |
DE4118184A1 (de) * | 1991-06-03 | 1992-12-10 | Inst Neue Mat Gemein Gmbh | Beschichtungszusammensetzungen auf der basis von fluorhaltigen anorganischen polykondensaten, deren herstellung und deren verwendung |
DE4138750A1 (de) * | 1991-11-26 | 1993-05-27 | Battelle Institut E V | Neutralisationsmittel zur wirkungsvollen und schonenden massenentsaeuerung von buechern und anderen papiererzeugnissen |
DE4225780C1 (de) * | 1992-08-04 | 1994-01-05 | Battelle Institut E V | Verfahren zur Wiederverfestigung von geschädigtem Papier |
-
1995
- 1995-11-23 DE DE19543707A patent/DE19543707A1/de not_active Withdrawn
-
1996
- 1996-11-22 ES ES96941012T patent/ES2144275T3/es not_active Expired - Lifetime
- 1996-11-22 EP EP96941012A patent/EP0862671B1/de not_active Expired - Lifetime
- 1996-11-22 AT AT96941012T patent/ATE191525T1/de not_active IP Right Cessation
- 1996-11-22 US US09/068,905 patent/US6071475A/en not_active Expired - Fee Related
- 1996-11-22 PT PT96941012T patent/PT862671E/pt unknown
- 1996-11-22 DE DE59604912T patent/DE59604912D1/de not_active Expired - Fee Related
- 1996-11-22 WO PCT/EP1996/005176 patent/WO1997019224A1/de active IP Right Grant
-
2000
- 2000-06-23 GR GR20000401461T patent/GR3033765T3/el not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9719224A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0862671B1 (de) | 2000-04-05 |
PT862671E (pt) | 2000-09-29 |
GR3033765T3 (en) | 2000-10-31 |
DE59604912D1 (de) | 2000-05-11 |
DE19543707A1 (de) | 1997-05-28 |
ES2144275T3 (es) | 2000-06-01 |
WO1997019224A1 (de) | 1997-05-29 |
ATE191525T1 (de) | 2000-04-15 |
US6071475A (en) | 2000-06-06 |
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