EP1337710B1 - Papierstreichmassen enthaltend n-vinylformamid - Google Patents
Papierstreichmassen enthaltend n-vinylformamid Download PDFInfo
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- EP1337710B1 EP1337710B1 EP01993722A EP01993722A EP1337710B1 EP 1337710 B1 EP1337710 B1 EP 1337710B1 EP 01993722 A EP01993722 A EP 01993722A EP 01993722 A EP01993722 A EP 01993722A EP 1337710 B1 EP1337710 B1 EP 1337710B1
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- EP
- European Patent Office
- Prior art keywords
- parts
- copolymer
- paper
- coating
- paper coating
- 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.)
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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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
Definitions
- the invention relates to new paper coating slips. Further concerns the invention the use of paper coating slips, as well as papers, which are coated with these paper coating slips.
- Paper coatings consist essentially of one mostly white pigment, a polymeric binder and additives which the rheological properties of the coating color and the properties the surface of the coated paper in the desired Influence meaning. Such additives are often called “cobinder” designated. Through the binder, the pigments on fixed to the paper and the cohesion in the resulting coating guaranteed.
- An increase in the whiteness of the coated paper can be achieved by a Variety of different measures can be achieved. This includes for example, the use of a raw paper with as possible high whiteness, which in turn by using possible white starting materials can be obtained. Another measure is the selection of possible white pigments for the paper coating slip.
- Suitable cobinders can be water-soluble polymers, z. As polyvinyl alcohol, carboxymethyl cellulose, anionic or nonionic degraded starches, casein, soy protein and water soluble Use styrene-acrylate copolymers (see e.g. P. Kreutzer, Basic processes of paper production 2: Interfacial processes when using chemical aids, H.-G. Völkel and R. réelle (ed.), PTS Kunststoff, 2000, PTS manuscript: PTS-GPE - SE 2031-2).
- the activation of the optical brightener is not with all water-soluble polymers possible, it is possible, for example Not, with certain polysaccharides, eg. As dextran, or with anionic Polyacrylamides to activate the optical brightener.
- water-soluble polymers, the cationic groups, in particular amino or ammonium groups contained e.g. Polyamine / epichlorohydrin or polyamidoamine / epichlorohydrin resins, Polyamines or polyethylenimines, the Not only do not amplify whitening, but even deactivate so that there is a deletion of the brightening (K. P. Kreutzer, supra, pages 8-22).
- This invention was based on the object, paper coating slips with improved properties or coating compounds that contribute to a Improvement of the coated paper, available put.
- polymers or copolymers hereinafter (Co) polymers, used as an additive (cobinder) which consist of N-vinylformamide, as well as those N-vinylformamide further anionic, cationic and / or nonionic Contain monomers in copolymerized form.
- Co polymers or copolymers
- cobinder used as an additive (cobinder) which consist of N-vinylformamide, as well as those N-vinylformamide further anionic, cationic and / or nonionic Contain monomers in copolymerized form.
- the in the paper coating incorporated (co) polymers have in addition to its brightener activating effect the property that they also the dry picking strength and the wet pick strength of the and even more so than others Co-binders. Furthermore, it was surprisingly found that papers that were refined with the coating compositions of the invention, a give higher print gloss than papers with coating slips in which Cobinder according to the prior art are included.
- cationic copolymers which copolymerized N-vinylformamide can be used according to the invention.
- a water-soluble cationic monomer Diallyldimethylammonium chloride, diallyldimethylammonium methosulfate, N- (2-trimethylammonium) ethylacrylamide methosulphate or N-2- (ethyl-dimethyl) ammonium ethyl methacrylamide ethosulphate or Mixtures thereof copolymerize with N-vinylformamide as in EP-B1 464,043 and thus obtains cationic copolymers, suitable for use in the coating colors of the invention suitable.
- split vinylformamides (s.u.) can also be used. be used for the coating compositions according to the invention, in which the liberated, bound in the polymer amino functions with form the cleaved formic acid an ammonium formate.
- monomers of monoethylenically unsaturated carboxylic acids with 3 to 8 carbon atoms and the water-soluble salts of these monomers For example: acrylic acid, methacrylic acid, Dimethylacrylic acid, ethacrylic acid, maleic acid, citraconic acid, Methylenemalonic acid, allylacetic acid, vinylacetic acid, crotonic acid, Fumaric acid, mesaconic acid and itaconic acid. From this Group of monomers are preferably used acrylic acid, methacrylic acid, Maleic acid or mixtures of said carboxylic acids, in particular mixtures of acrylic acid and maleic acid or mixtures of acrylic acid and methacrylic acid. These monomers or mixtures thereof, either in the form of free carboxylic acids or in partially or completely neutralized form the copolymerization can be used.
- the weight ratio of vinylformamide to monoethylenically unsaturated Carboxylic acid having 3 to 8 C atoms and / or their alkali metal, Alkaline earth metal or ammonium salts in the monomer mixture can range between 100: 0 and 70: 30, with weight ratios between 100: 0 and 80: 20, but especially between 100: 0 and 90: 10 are preferred.
- Preferred as the monomer is N-vinylpyrrolidone.
- the free-radical (co) polymerization of such monomers takes place, for example in aqueous solution in the presence of polymerization initiators, which decompose into free radicals under polymerization conditions.
- the (co) polymerization can be carried out over a wide temperature range, optionally under reduced or elevated Pressure usually be carried out at temperatures up to 100 ° C.
- the pH of the reaction mixture is usually in the Range is set from 4 to 10.
- the (co) polymerization can also in other, the expert be carried out in a known manner, e.g. as a solution, precipitation, Water-in-oil emulsion or reverse suspension polymerization.
- the solution polymerization is preferred.
- the N-vinylformamide using free-radical polymerization initiators e.g. radical decomposing azo compounds, such as 2,2'-azo-bis (isobutyronitrile), 2,2'-azobis (2-amidinopropane) hydrochloride or 4,4'-azo-bis- (4'-cyanopentanoic acid) (Co) polymerized.
- radical decomposing azo compounds such as 2,2'-azo-bis (isobutyronitrile), 2,2'-azobis (2-amidinopropane) hydrochloride or 4,4'-azo-bis- (4'-cyanopentanoic acid) (Co) polymerized.
- the compounds mentioned are usually in the form of aqueous solutions used, the lower concentration by in the (Co) polymerization acceptable amount of water and the upper concentration by the solubility of the compound in question in water is determined.
- the concentration is 0.1 to 30 wt .-%, preferably 0.5 to 20 wt .-%, particularly preferably 1.0 to 10 wt .-%, based on the solution.
- the amount of initiators is generally 0.1 to 10 wt .-%, preferably 0.5 to 5 wt .-%, based on the to (co) polymerizing Monomers. It can also be several, different Initiators in the (co) polymerization find use.
- the solvents or diluents may be, for example, water, alcohols, such as methanol, ethanol, n- or iso-propanol, n- or iso-butanol, or ketones, such as acetone, ethyl methyl ketone, diethyl ketone or isobutyl methyl ketone.
- alcohols such as methanol, ethanol, n- or iso-propanol, n- or iso-butanol
- ketones such as acetone, ethyl methyl ketone, diethyl ketone or isobutyl methyl ketone.
- the (co) polymerization in the presence of polymerization regulators such as hydroxylammonium salts, chlorinated hydrocarbons and thio compounds, e.g. tert-butylmercaptan, thioglycolic acid ethylacrylic ester, mercaptoethynol, Mercaptopropyltrimethoxysilane, dodecylmercaptan, tert-dodecylmercaptan or alkali metal hypophosphites become.
- these regulators for. In Amounts from 0 to 0.8 parts by weight, based on 100 parts by weight of to (co) polymerizing monomers, are used by the the molecular weight of the resulting (co) polymer is reduced.
- Emulsifiers ionic and / or nonionic Emulsifiers and / or protective colloids or stabilizers used as surface-active compounds.
- the water-in-oil polymerization is used as the oil phase saturated Hydrocarbons, for example hexane, heptane, cyclohexane, Decalin or aromatic hydrocarbons, such as benzene, toluene, Xylene and cumene.
- the ratio of oil phase to aqueous Phase is in the reverse suspension polymerization, for example 10: 1 to 1:10.
- (Co) polymer having a low K value, eg below 80 is obtained by carrying out the (co) polymerization in the presence of polymerization regulators or in a solvent which controls the (co) polymerization, for example alcohols, such as methanol, Ethanol, n- or iso-propanol, or ketones, such as acetone, ethyl methyl ketone, diethyl ketone or iso- butyl methyl ketone.
- alcohols such as methanol, Ethanol, n- or iso-propanol
- ketones such as acetone, ethyl methyl ketone, diethyl ketone or iso- butyl methyl ketone.
- K values with low molecular weights and correspondingly low K values are still obtained by the usual methods, i.e. Use of larger amounts of polymerization initiator or use of polymerization regulators or combinations of mentioned measures.
- the molecular weight of the (co) polymers which can be used according to the invention is not limited, but it should not be too high so that the coating does not get too high viscosity.
- Prefers become (co) polymers with K values between 10 and 80, where K values between 30 and 70 are particularly preferred.
- Vinylformamide-containing (co) polymers can according to the invention both partially or fully split and uncleaved Form are used. A degree of hydrolysis is preferred between 0 and 30%, more preferably between 0 and 20% and most preferably between 0 and 10%.
- the nature of the spin-off is not limited, it can for example, in the presence of acid or base, preferably is the cleavage in the presence of bases, such as Sodium hydroxide, potassium hydroxide, alkaline earth metal hydroxides, ammonia or amines.
- bases such as Sodium hydroxide, potassium hydroxide, alkaline earth metal hydroxides, ammonia or amines.
- cleavage of the formyl group may be in Water to be performed.
- the cleavage of the formyl group in the hydrolysis takes place at temperatures in the range of 20 to 200, preferably 40 to 180 ° C, optionally in the presence of acids or bases.
- the hydrolysis is preferably in the temperature range of 70 to 90 ° C carried out.
- Per formyl group equivalent in poly-N-vinylformamide is required for acid hydrolysis about 0.05 to 1.5 equivalents of Acid, such as hydrochloric, hydrobromic, phosphoric, sulfuric.
- the pH of acid hydrolysis is in the range from 2 to 0, preferably from 1 to 0.
- the hydrolysis proceeds much faster than that of (co) polymers of others N-vinylcarboxamides, such as.
- N-methyl-N-vinylformamide As the N-methyl-N-vinylformamide, and therefore can be used under more gentle conditions, i. at lower Temperatures and without a high excess of acids, be performed.
- the hydrolysis of the formyl groups of the poly-N-vinylformamide can be also in alkaline medium, e.g. in the pH range of 11 to 14. This pH is preferably adjusted by adding sodium hydroxide solution or potassium hydroxide solution. It is but also possible ammonia, amines and / or alkaline earth metal bases to use. For the alkaline hydrolysis use 0.05 to 1.5, preferably 0.4 to 1.0 equivalents of a base.
- the cleavage can also be at high temperatures, for example above 100 ° C, preferably 120 to 180 ° C, more preferably 140 to 160 ° C in the presence of a solvent, e.g. Water, without acid or base. This is preferred under conditions performed above the critical point, for example with supercritical water.
- a solvent e.g. Water
- the formyl group is in water in the presence of acids or bases, split off from the poly-N-vinylformamide, is obtained as by-product formic acid or Salts of formic acid.
- the solutions obtained for example, with Treated ion exchangers.
- the separated from the hydrolysis products Residue can then be incorporated into the coating slips become.
- the amount of (co) polymers of vinylformamide, the inventive Paper coating is added depends on the Amount of brightener in the coating.
- optical brightener per 100 parts by weight of pigment in the coating.
- (Co) polymer is usually given the same to five times Amount of optical brightener to the coating, ie 0.2 to 10 Parts by weight, preferably 0.5 to 8 and particularly preferably 1 to 5 parts by weight.
- the paper coating slips according to the invention preferably contain at least one optical brightener.
- the processing of the coating compositions according to the invention is carried out completely analogous to the processing of coating colors according to the state of Technique, e.g. after "The Essential Guide to Aqueous Coating of Paper and Board”, T.W.R. Dean (ed.), Published by the Paper Industry Technical Association (PITA), 1997 or "Guide to the Use of BASF products in paper and board coating ", BASF Aktiengesellschaft, D-6700 Ludwigshafen, Federal Republic Germany, B 376 d, 09.77.
- the present invention Paper pastes still at least one white pigment and at least a binder.
- the paper coating slips can still further known to those skilled Contain ingredients. Consider, for example, Leveling agents, Wetting agent for the pigments etc.
- Coating compounds can be used are not limited. It can be the commercial Stilbenderivate with up to 6 sulfonic acid groups are substituted, e.g. Blankophor® PSG from Bayer AG, or derivatives thereof, or 4,4'-distyrylbiphenyl derivatives be used.
- the pigments which can be used in the coating compositions according to the invention are also not limited.
- satin white Calcium sulphoaluminate
- calcium carbonate in ground or precipitated (precipitated) form barium sulfate in ground or precipitated form
- barium sulfate in ground or precipitated form kaolin (clay)
- calcined clay talc
- silicates Chalk or coating clay
- organic pigments e.g. B. Plastics in particulate form
- the binders which can be used in the coating slips according to the invention are also not limited.
- Casein Starch, Soy Protein, Carboxymethylcellulose, Alginate and / or polyvinyl alcohol or dispersions, the acrylic acid, acrylic acid ester, vinyl acetate and / or styrene in polymerized form, e.g. (Co) polymers of acrylic ester / styrene, Styrene / butadiene or vinyl acetate.
- the paper coating slips may continue to be e.g. dispersants contain. Suitable dispersants are polyanions, for example of polyphosphoric acids or of polyacrylic acids (polysalts), which is usually present in amounts of from 0.1 to 3% by weight, based on the amount of pigment are included.
- the ingredients in known manner, wherein the (co) polymers in general is used in the form of a dispersion, suspension or solution.
- the content of water in the paper coating slip usually becomes to 25 to 75 wt .-%, based on the total paper coating slip (including water), set.
- the paper coating slip can be applied by conventional methods coating papers are applied (see Ullmann's Encyclopedia Technical Chemistry, 4th Edition, Vol. 17, p. 603 ff).
- a thickener may be added.
- a thickener come in addition to free-radical (co) polymerized (co) polymers, customary organic and inorganic thickeners such as hydroxymethylcellulose or bentonite.
- the paper pond compounds are usually aqueous paper coating slips.
- the water content can vary depending on the desired viscosity or gradient properties are set.
- the paper coating slips of the invention are suitable for coating e.g. from paper or Carton.
- the paper coating can then by conventional methods be applied to the papers or cardboard to be coated.
- Papers or cartons may be made by conventional methods, e.g. offset, High-pressure or gravure printing can be printed.
- the coating colors were applied with a solids content of 68.1% by weight to a wood-free paper having a basis weight of 70 g / m 2 to a coating weight of 16 g / m 2 and then satined.
- the brightening of the paper was determined according to DIN 53 145, Part 2.
- the CIE whiteness of the paper was measured according to ISO 2469.
- the coating compositions according to the invention which are a polyvinylformamide (PVFA) experience a stronger optical brightening and have a higher whiteness according to CIE than the coating slips, the carboxymethylcellulose according to the state of the art Cobinder included. It can also be seen that polyvinylformamides, hydrolyzed to a certain extent and thus cationic are bringing a higher lightening and CIE whiteness than nonionic PVFA. In addition, it can be seen that the coating compounds, which contain a polyvinylformamide, both in thezelrupffestmaschine as well as in the wet picking strength much better properties than those containing CMC as cobinder. Finally, the coating compositions according to the invention give also a much higher print gloss.
- PVFA polyvinylformamide
- the coating compositions were processed as described in Example 1.
- the coating compositions were processed as described in Example 1.
- the whiteness and whiteness of the satined papers and their Dry and wet pick strengths were determined as in Example 1 described.
- the coating compositions were processed as described in Example 1.
- the whiteness and whiteness of the satined papers and their Dry and wet pick strengths were determined as in Example 1 described.
- the coating compositions were processed as described in Example 1.
- the blister resistance was determined by dipping the double-coated Papers in hot oil (240 ° C) determined. The blistering was with grades 1 (no bubbles) to 6 (a lot of bubbles) assessed.
- the coating compositions were processed as described in Example 1.
- the whiteness and whiteness of the satined papers were determined as described in Example 1.
- the coating compositions were processed as described in Example 1.
- the whiteness and whiteness of the satined papers and their Dry and wet pick strengths were determined as in Example 1 described.
- Table 7 shows that the addition of nonionic and cationic polyvinylformamides having a low molecular weight (K value) to coating papers with stronger optical Brightening is equivalent to adding cobinders can be achieved in the state of the art.
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Description
1-100 Gewichtsteile, bevorzugt 2-80, besonders bevorzugt 5-80
0-10 Gewichtsteile, bevorzugt 0,5-8, besonders bevorzugt 1-5
0-30 Gewichtsteile, bevorzugt 1-20, besonders bevorzugt 2-10
0-90 Gewichtsteile, bevorzugt 0,5-80, besonders bevorzugt 5-50
- 70
- Teile Calciumcarbonat (Hydrocarb® 90, Plüss-Staufer AG)
- 30
- Teile Kaolin (Amazon 88, Kaolin International)
- 8
- Teile Styrol-Butadien-Latex (Styronal® D 610, BASF Aktiengesellschaft)
- 0,5
- Teile optischer Aufheller (Blankophor® PSG, Bayer AG)
- 0,5
- Teile Carboxymethylcellulose (CMC 7L2T, Hercules GmbH) bzw.
- 0,5
- Teile Polyvinylformamid (PVFA) mit dem K-Wert 51 und einem Hydrolysegrad wie in Tabelle 1 angegeben.
Cobinder | CMC 7L2T | PVFA Hydrolysegrad 0 % | PVFA Hydrolysegrad 3 % | PVFA Hydrolysegrad 8,5 % | |
Weiße R 457 mit UV | % | 91,0 | 92,9 | 93,9 | 94,1 |
Weiße R 457 ohne UV | % | 85,9 | 86,4 | 87,0 | 87,1 |
Aufhellung | % | 5,1 | 6,5 | 6,9 | 7,0 |
Weiße CIE | % | 102,3 | 109,2 | 111,4 | 111,3 |
IGT trocken (85 cm/s) | 0,53 | 0,94 | 1,25 | 1,25 | |
Prüfbau nass (35 cm/s) | 0,70 | 1,71 | 1,81 | 1,55 | |
Druckglanz | % | 69,5 | 71,8 | 72,1 | 76,6 |
- 70
- Teile Calciumcarbonat (Hydrocarb 90, Plüss-Staufer AG)
- 30
- Teile Kaolin (Amazon 88, Kaolin International)
- 8
- Teile Styrol-Butadien-Latex (Styronal® D 615, BASF Aktienge-sellschaft)
- 0,5
- Teile optischer Aufheller (Blankophor PSG, Bayer AG)
- 0,5
- Teile Carboxymethylcellulose (CMC 7L2T, Hercules GmbH) bzw.
- 0,5
- Teile Polyvinylalkohol (Mowiol® 6-98, Clariant Aktiengesellschaft) bzw.
- 0,5
- und
- 1,0
- Teile Polyvinylformamide (PVFA) mit dem K-Wert 45 und einem Hydrolysegrad von 5%.
Cobinder | ohne | CMC 7L2T | Polyvinyl-alkohol Mowiol 6-98 | Kationisches PVFA Hydrolysegrad 5 % | ||
0,5 % | 0,5 % | 0,5 % | 1,0 % | |||
Weiße R 457 mit UV | % | 89,8 | 91,2 | 93,0 | 94,3 | 95,0 |
Weiße R 457 ohne UV | % | 85,0 | 85,8 | 86,1 | 87,0 | 86,8 |
Aufhellung | % | 4,8 | 5,4 | 6,9 | 7,3 | 8,2 |
Weiße CIE | % | 99,3 | 103,5 | 111,0 | 113,1 | 116,6 |
Druckglanz | % | 72,6 | 72,2 | 70,2 | 73,8 | 75,5 |
- 70
- Teile Calciumcarbonat (Hydrocarb 90, Plüss-Staufer AG)
- 30
- Teile Kaolin (Amazon 88, Kaolin International)
- 8
- Teile Styrol-Butadien-Latex (Styronal PR 8736, BASF Aktiengesellschaft)
- 0,5
- Teile optischer Aufheller (Blankophor PSG, Bayer AG)
- 1,0
- Teile Carboxymethylcellulose (CMC 7L2T, Hercules GmbH) bzw.
- 1,0
- Teile Copolymerisat auf Acrylatbasis (Acrosol® C 50 L, BASF Aktiengesellschaft) bzw.
- 1,0
- Teile Polyvinylformamide (PVFA) mit dem K-Wert 50 und Hydrolysegraden von 1% bzw. 5%.
Cobinder | CMC 7L2T | Acrosol C 50 L | PVFA Hydrolysegrad 1 % | PVFA Hydrolysegrad 5 % | |
Weiße R 457 mit UV | % | 91,9 | 92,7 | 93,4 | 94,3 |
Weiße R 457 ohne UV | % | 86,2 | 86,3 | 86,1 | 86,5 |
Aufhellung | % | 5,7 | 6,4 | 7,3 | 7,8 |
Weiße CIE | % | 105,3 | 107,8 | 111,6 | 113,8 |
Prüfbau näss (130 cm/s) | 0,55 | 0,52 | 1,44 | 1,21 |
- 70
- Teile Calciumcarbonat (Hydrocarb 90, Plüss-Staufer AG)
- 30
- Teile Kaolin (Amazon 88, Kaolin International)
- 10
- Teile Styrol-Acrylat-Latex (Acronal® S 360 D, BASF Aktiengesellschaft)
- 0,5
- Teile Carboxymethylcellulose (CMC 7L2T, Hercules GmbH) als Cobinder für alle Rezepte
- 0,5
- Teile optischer Aufheller (Blankophor PSG, Bayer AG)
- 0,5
- Teile Carboxymethylcellulose (CMC 7L2T, Hercules GmbH) bzw.
- 0,5
- Teile Polyvinylformamid (PVFA) mit dem K-Wert 69 und einem Hydrolysegrad von 1%.
Zusätzlicher Cobinder | CMC 7L2T | PVFA K-Wert 69 Hydrolysegrad 1 % | |
Weiße R 457 mit UV | % | 94,0 | 95,8 |
Weiße R 457 ohne UV | % | 87,4 | 88,5 |
Aufhellung | % | 6,6 | 7,3 |
Weiße CIE | % | 110,7 | 111,6 |
IGT trocken (170 cm/s) | 1,35 | 1,80 | |
Prüfbau nass (130 cm/s) | 0,78 | 1,28 |
- 70
- Teile Calciumcarbonat (Hydrocarb 90, Plüss-Staufer AG)
- 30
- Teile Kaolin (Amazon 88, Kaolin International)
- 10 - 12
- Teile (siehe Tabelle 5) Styrol-Butadien-Latex (Styronal LD 615, BASF Aktiengesellschaft)
- 0,5
- Teile optischer Aufheller (Blankophor PSG, Bayer AG)
- 1,0
- Teile oxidativ abgebaute Stärke (Emox® TSC, Emsland-Stärke GmbH) bzw.
- 2,0
- Teile oxidativ abgebaute Stärke (Emox TSC, Emsland-Stärke GmbH) bzw.
- 0,5
- Teile Polyvinylformamid (PVFA) mit dem K-Wert 69 und einem Hydrolysegrad (HG) von 1% bzw. 5%.
Teile Styronal LD 615 | 12 | 11 | 10 | 11 | 11 | |
Teile Sterocoll FD | 0,30 | 0,25 | 0,2 | 0,5 | 0,5 | |
Cobinder (Teile) | - | Oxid. Stärke (1,0) | Oxid. Stärke (2,0) | PVFA HG 1 % (0,5) | PVFA HG 5 % (0,5) | |
Weiße R 457 mit UV | % | 92,2 | 92,9 | 92,6 | 94,5 | 93,4 |
Aufhellung | % | 4,5 | 4,8 | 4,7 | 6,2 | 6,4 |
Weiße CIE | % | 100,8 | 103,2 | 103,4 | 108,6 | 109,4 |
Prüfbau nass (135 cm/s) | 1,11 | 1,32 | 0,93 | 1,69 | 1,21 | |
Blistern bei 240°C | 6 | 3 | 5 | 1 | 2 |
- 70
- Teile Calciumcarbonat (Hydrocarb 90, Plüss-Staufer AG)
- 30
- Teile Kaolin (Amazon 88, Kaolin International)
- 8
- Teile Styrol-Butadien-Latex (Styronal D 610, BASF Aktiengesellschaft)
- 0,5
- Teile optischer Aufheller (Blankophor PSG, Bayer AG)
- 0,5
- Teile Carboxymethylcellulose (CMC 7L2T, Hercules GmbH) bzw.
- 0,5
- Teile eines Copolymerisates aus Vinylformamid und Acrylsäure (VFA/AS) im Verhältnis 80 : 20 mit dem K-Wert 38 bzw.
- 0,5
- Teile eines Copolymerisates aus Vinylformamid und Acrylsäure (VFA/AS) im Verhältnis 90 : 10 mit dem K-Wert 43.
- 70
- Teile Calciumcarbonat (Omyalite® 90, Plüss-Staufer AG)
- 30
- Teile Kaolin (Amazon 88, Kaolin International)
- 10
- Teile Styrol-Acrylat-Latex (Acronal S 305 D, BASF Aktienge-sellschaft)
- 0,5
- Teile optischer Aufheller (Blankophor PSG, Bayer AG)
- 2
- Teile Polyvinylalkohol (Polyviol® LL 603, Wacker-Chemie GmbH) bzw.
- 3,5
- Teile oxidativ abgebaute Stärke (Emox TSC, Emsland-Stärke GmbH) bzw.
- 2
- Teile Polyvinylformamid (PVFA) mit dem K-Wert 32 und den Hydrolysegraden von 0 %, 1% und 5 %.
Cobinder | Polyvinyl-alkohol | Oxid. Stärke | PVFA Hydroly-segrad 0 % | PVFA Hydroly-segrad 1 % | PVFA Hydroly-segrad 5 % | |
Weiße R 457 mit UV | % | 94,0 | 92,2 | 95,2 | 96,0 | 95,6 |
Weiße R 457 ohne UV | % | 86,4 | 86,1 | 86,8 | 87,4 | 87,2 |
Aufhellung | % | 7,6 | 6,1 | 8,4 | 8,6 | 8,4 |
Claims (13)
- Verwendung von Polymerisaten oder Copolymerisaten, die N-Vinylformamid einpolymerisiert enthalten, zur Aktivierung von optischen Aufhellern in Papierstreichmassen.
- Verwendung gemäß Anspruch 1, dadurch gekennzeichnet, dass die Papierstreichmasse neben dem N-Vinylformamid enthaltenden Polymerisat oder Copolymerisat einen optischen Aufheller, mindestens ein Weißpigment und mindestens ein Bindemittel enthält.
- Verwendung gemäß Anspruch 1 oder 2, dadurch gekennzeichnet, dass im Copolymerisat zusätzlich mindestens ein wasserlösliches kationisches Monomer einpolymerisiert ist.
- Verwendung gemäß einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass im Copolymerisat zusätzlich Acrylsäure oder Methacrylsäure und/oder deren Salze oder Gemische davon einpolymersiert ist.
- Verwendung gemäß einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass im Copolymerisat zusätzlich N-Vinylpyrrolidon einpolymersiert ist.
- Verwendung gemäß einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass im Copolymerisat zusätzlich mindestens ein weiteres wasserlösliches Vinylmonomer einpolymeriert ist.
- Verwendung gemäß einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das im Polymerisat oder Copolymerisat einpolymerisiert enthaltene N-Vinylformamid teilweise gespalten ist.
- Papierstreichmasse, enthaltendmindestens ein Bindemittel,mindestens ein Weißpigment,einen optischen Aufheller undein Polymerisat oder Copolymerisat gemäß einem der Ansprüche 1 bis 6.
- Papierstreichmasse gemäß Anspruch 8, dadurch gekennzeichnet, dass es sich bei dem Copolymerisat um ein kationisches Copolymerisat handelt.
- Papierstreichmasse nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass das Polymerisat oder Copolymerisat aufgebaut ist aus:1 bis 100 Gewichtsteile n-Vinylformamid0 bis 10 Gewichtsteile wasserlösliches kationisches Monomer0 bis 30 Gewichtsteile Acrylsäure, Methacrylsäure, deren Salze oder Gemische davon0 bis 90 Gewichtsteile eines weiteren wasserlöslichen Vinylmonomeren.
- Papierstreichmasse gemäß einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass das Polymerisat oder Copolymerisat in Mengen von 0,2 bis 10 Gewichtsteilen pro 100 Gewichtsteilen Pigment vorhanden ist.
- Papier, bestrichen mit einer Papierstreichmasse gemäß einem der Ansprüche 8 bis 11.
- Verwendung von Papier gemäß Anspruch 12 in einem Druckverfahren.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10055592A DE10055592A1 (de) | 2000-11-09 | 2000-11-09 | Papierstreichmassen |
DE10055592 | 2000-11-09 | ||
PCT/EP2001/012685 WO2002038861A1 (de) | 2000-11-09 | 2001-11-02 | Papierstreichmassen enthaltend n-vinylformamid |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1337710A1 EP1337710A1 (de) | 2003-08-27 |
EP1337710B1 true EP1337710B1 (de) | 2005-08-24 |
Family
ID=7662723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01993722A Expired - Lifetime EP1337710B1 (de) | 2000-11-09 | 2001-11-02 | Papierstreichmassen enthaltend n-vinylformamid |
Country Status (8)
Country | Link |
---|---|
US (1) | US6969444B2 (de) |
EP (1) | EP1337710B1 (de) |
JP (1) | JP2004513262A (de) |
AT (1) | ATE302878T1 (de) |
AU (1) | AU2002215999A1 (de) |
CA (1) | CA2428356C (de) |
DE (2) | DE10055592A1 (de) |
WO (1) | WO2002038861A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10161158A1 (de) | 2001-02-23 | 2002-09-05 | Basf Ag | Streichmassen für Ink-Jet-Aufzeichnungsmaterialien |
DE10138631A1 (de) * | 2001-08-13 | 2003-02-27 | Basf Ag | Verfahren zur Herstellung von beschichtetem Papier mit hoher Weiße |
EP1448690A1 (de) * | 2001-09-03 | 2004-08-25 | Basf Aktiengesellschaft | Verstärkung der wirkung von optischen aufhellern mit hilfe von polymeren |
EP1438197B1 (de) * | 2001-09-03 | 2008-10-15 | Basf Se | Verfahren zur erhöhung der weisse von papier mit hilfe von kationischen polyelektrolyten |
WO2003022924A1 (de) * | 2001-09-07 | 2003-03-20 | Basf Aktiengesellschaft | Polymerdispersionen mit vinylamid-copolymeren |
DE102004045172A1 (de) * | 2004-09-17 | 2006-03-23 | Basf Ag | Verfahren zur Herstellung von ein- oder mehrfach gestrichenen Substraten mit einer ein Bindemittel vor Haftung umfassenden Streichfarbenzusammensetzung |
DE102004045171A1 (de) * | 2004-09-17 | 2006-03-23 | Basf Ag | Verfahren zur Herstellung von ein- und/oder mehrfach gestrichenen Substraten |
CN101048551B (zh) * | 2004-10-27 | 2012-02-15 | 西巴特殊化学品控股有限公司 | 荧光增白剂组合物 |
DE102004052957A1 (de) * | 2004-10-29 | 2006-05-04 | Basf Ag | Verfahren zur Herstellung von gekrepptem Papier |
FR2911884B1 (fr) | 2007-01-31 | 2010-02-26 | Arjowiggins Licensing Sas | Feuille couchee blanche imprimable par offset et ayant un haut pouvoir de fluorescence et son procede de fabrication |
US20100010153A1 (en) * | 2007-02-08 | 2010-01-14 | Basf Se | Water-soluble binders for paper coating slips |
JP2010532403A (ja) * | 2007-07-05 | 2010-10-07 | ビーエーエスエフ ソシエタス・ヨーロピア | 微粒子充填剤の水性懸濁液、その製造方法、並びに高充填材含有量及び高乾燥強度を有する紙を製造するためのその使用 |
US8613834B2 (en) | 2008-04-03 | 2013-12-24 | Basf Se | Paper coating or binding formulations and methods of making and using same |
US8475630B2 (en) * | 2009-04-16 | 2013-07-02 | Nanopaper, Llc | Retention systems and methods for papermaking |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1692854A1 (de) | 1967-11-29 | 1971-10-21 | Hoechst Ag | Verfahren zur Entwaesserung von Cellulosefaser-Suspensionen |
CA1283748C (en) * | 1986-06-25 | 1991-04-30 | Takaharu Itagaki | Vinylamine copolymer, flocculating agent and paper strength increasingagent using the same, as well as process for producing the same |
US5026507A (en) | 1989-05-04 | 1991-06-25 | Westvaco Corporation | Fluorescent whitening agents, products comprising the agent and method of use thereof |
DE4001045A1 (de) | 1990-01-16 | 1991-07-18 | Basf Ag | Verfahren zur herstellung von papier, pappe und karton |
GB2247030B (en) | 1990-07-03 | 1994-01-12 | Grace W R & Co | The enhancement of fluorescent whitening agents |
GB2277749B (en) | 1993-05-08 | 1996-12-04 | Ciba Geigy Ag | Fluorescent whitening of paper |
DE4409903A1 (de) * | 1994-03-23 | 1995-09-28 | Basf Ag | N-Vinyleinheiten enthaltende Pfropfpolymerisate, Verfahren zu ihrer Herstellung und ihre Verwendung |
DE19727503A1 (de) | 1997-06-27 | 1999-01-07 | Basf Ag | Papierstreichmassen auf Basis von Bindemitteln mit N-Vinylformamidderivaten |
JPH1193092A (ja) | 1997-09-11 | 1999-04-06 | Hymo Corp | 紙用表面塗布剤 |
WO2000068501A1 (de) | 1999-05-05 | 2000-11-16 | Landqart | Bedruckte sowie bedruckbare substrate |
-
2000
- 2000-11-09 DE DE10055592A patent/DE10055592A1/de not_active Withdrawn
-
2001
- 2001-11-02 EP EP01993722A patent/EP1337710B1/de not_active Expired - Lifetime
- 2001-11-02 AT AT01993722T patent/ATE302878T1/de active
- 2001-11-02 WO PCT/EP2001/012685 patent/WO2002038861A1/de active IP Right Grant
- 2001-11-02 JP JP2002541169A patent/JP2004513262A/ja not_active Withdrawn
- 2001-11-02 US US10/415,338 patent/US6969444B2/en not_active Expired - Fee Related
- 2001-11-02 CA CA002428356A patent/CA2428356C/en not_active Expired - Fee Related
- 2001-11-02 DE DE50107224T patent/DE50107224D1/de not_active Expired - Lifetime
- 2001-11-02 AU AU2002215999A patent/AU2002215999A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
CA2428356A1 (en) | 2002-05-16 |
DE50107224D1 (de) | 2005-09-29 |
WO2002038861A1 (de) | 2002-05-16 |
ATE302878T1 (de) | 2005-09-15 |
JP2004513262A (ja) | 2004-04-30 |
AU2002215999A1 (en) | 2002-05-21 |
CA2428356C (en) | 2009-06-16 |
EP1337710A1 (de) | 2003-08-27 |
DE10055592A1 (de) | 2002-05-23 |
US20040020615A1 (en) | 2004-02-05 |
US6969444B2 (en) | 2005-11-29 |
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