EP0801700B1 - Verwendung weissgetönter kunststoffe zum weisstönen von papierstreichmassen und derart weissgetönte papierstreichmassen - Google Patents
Verwendung weissgetönter kunststoffe zum weisstönen von papierstreichmassen und derart weissgetönte papierstreichmassen Download PDFInfo
- Publication number
- EP0801700B1 EP0801700B1 EP95943210A EP95943210A EP0801700B1 EP 0801700 B1 EP0801700 B1 EP 0801700B1 EP 95943210 A EP95943210 A EP 95943210A EP 95943210 A EP95943210 A EP 95943210A EP 0801700 B1 EP0801700 B1 EP 0801700B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- white
- plastics
- paper
- optically
- 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
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
- 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
- D21H21/28—Colorants ; Pigments or opacifying agents
- D21H21/285—Colorants ; Pigments or opacifying agents insoluble
-
- 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
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/42—Coatings with pigments characterised by the pigments at least partly organic
-
- 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
- D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching
Definitions
- the invention relates to white-tinted fine-particle plastics their use for tinting white of paper coating slips based on synthetic binders and paper coating slips, which contain such white-tinted plastics.
- binders for paper coating slips include, for example, butadiene / styrene, styrene / butyl acrylate, Acrylonitrile / butadiene / styrene, styrene / butadiene / acrylic acid alkyl ester, Acrylic acid alkyl ester, ethylene / vinyl chloride and ethylene / vinyl acetate copolymers as well as the homopolymers polyethylene, polyvinyl chloride, polyvinylidene chloride, Polyvinyl acetate and polyaddition compounds such as polyurethanes.
- Water-soluble white toners have also been condensed with aminoplasts and these condensates are particularly recommended for whitening paper coating slips (DE-A-3 112 435). However, these suggestions have been due to insufficient lightfastness and cannot enforce rheological difficulties.
- the invention thus relates to white-tinted, finely divided plastics from the series Polyacrylonitrile and their use for whitening paper coating slips Basis of synthetic binders.
- Another object of the invention are with the help of these white-tinted plastics white-colored paper coating slips.
- Plastics include polyacrylonitriles.
- Preferred polyacrylonitriles have intrinsic viscosities (measured in dimethylformamide at 20 ° C) from 1.18 to 2.22 dl / g.
- fine-particle are plastic powders with a (as weight average determined) particle size of less than 1 micron.
- Preferred White tones result in comparatively high light fastness on textile fibers - Measured in the Xenotest based on the guidelines for determining the Color fastness according to DIN 54004 - from at least 4, preferably from 5 to 7.
- the white-tinted plastics contain white-tinted polyacrylonitrile with white tones of the formulas (1) or (2).
- the fine-particle white-tinted plastics can be powdered into the paper coating slips be incorporated. In most cases, however, it should be more convenient to use the finely divided plastics before or after the application of the whitener in aqueous Disperse phase and, if necessary, after the white toner is applied has been, the aqueous plastic dispersion obtained in the paper coating slips to incorporate.
- plastic dispersions can A) 1 to 30 wt .-%, preferably 5 to 25% by weight of the whitened polymers, B) 1 to 50% by weight, preferably 5 to 20% by weight of surface-active substances, C) 0 to 15% by weight of preservative and D) Contain 20 to 98 wt .-%, preferably 55 to 90 wt .-% water, with up to Half of the water from hydrotropic substances, e.g. Ethylene glycol or glycerin can be replaced and the percentages are based on the sum of A + B + D Respectively.
- hydrotropic substances e.g. Ethylene glycol or glycerin
- Anionic, cationic and / or nonionic can be used as surface-active substances surface-active substances are used, such as in methods of Organic Chemistry (Houben-Weyl), 4th ed., Vol. XIV / I, Georg Thieme Verlag, Stuttgart 1961, p. 190 f. and in DE-A-2 334 769, pages 8 to 10 (GB-A-1 417 071).
- Dispersions of the invention Fine-particle white-tinted plastics can be used, for example, as follows getting produced:
- the powdery polymers are first treated with those for the selected one Suitable white toners in aqueous systems at temperatures from 60 ° C to to the cooking temperature until the whiteners are completely drawn onto the substrate. If necessary, additional aids are used.
- the white tones can also be melted onto the corresponding ones Polymer materials are fixed.
- the amount of white toner used on the substrate depends on the desired lightening effect; it is between 0.01 and 5% by weight of pure active substance, based on the plastic used (solid).
- the isolated white-tinted plastic powder is then homogenized after the addition of a surface-active substance and, if appropriate, water, with vigorous stirring.
- the amount of the surface-active substance can then be increased, if necessary to the total amount required for the stability of the dispersion.
- the suspension obtained is then comminuted and ground wet. Pre-crushing can be done using stone or tooth colloid mills. The subsequent wet comminution can take place in colloid, vibratory, cone and vibromills as well as in dissolvers or in sub-micron dispersers.
- continuous agitator mills with grinding media preferably those made of SiO 2 with a diameter of 0.2 to 5 mm, are preferably used.
- the isolated white-tinted plastic powder can also be used after dry grinding can be incorporated directly into the paper coating slips.
- a particularly advantageous option is a dispersion of white-tinted plastic
- the combination of the whitening process and the grinding process represents:
- the powdered plastic is comminuted wet together with the corresponding white toner, water and surface-active substances at temperatures from 60 ° C. to the boiling temperature, if appropriate after homogenization and pre-comminution, as described above.
- the complete brightening takes place during the grinding process in the grinder, preferably in a continuous agitator mill with SiO 2 grinding media.
- the amount of white toner used in the paper coating slip depends on the target White effect. In general, 0.01 to 0.5% by weight of pure white toner is sufficient (based on the solids of the paper coating slip to be lightened). A special The advantage is that, depending on the coating composition, the attainable graying limit is extremely high.
- Example 3 Paper coating slip (not according to the invention)
- the coating slips 3 and 4 a) -c) are applied to paper with the aid of a hand-held squeegee or an experimental coating system and dried at 80.degree.
- Table 2 shows the degree of whiteness CIE of the papers after production and after exposure (1 week in daylight). example White tone usage control in % Whiteness CIE Whiteness drop due to exposure before exposure after exposure 3) without WT 71.4 71 0.4 4 a) 0.037 94.4 93.2 1.5 4 b) 0.065 101.8 100.8 1 4 c) 0.088 107.4 106.1 1.3
- the papers according to the invention show a very low concentration of white toner both an increased degree of whiteness and a significantly improved light fastness.
Landscapes
- Paper (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Paints Or Removers (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
- Plural Heterocyclic Compounds (AREA)
Description
- R
- Ethyl oder Phenyl bedeutet;
- X
- für CH oder N,
- R1
- für CH3 oder CH2-C6H5 und
- R2
- für H oder SO2-CH3 stehen;
- R3
- für NH2, CH3, NH-C3H6-N(CH3)3 + An-, C2H4-N(CH3)3 + An-, CH2-CH(CH3)-N(CH3)3 + An-, CH(CH3)-CH2-N(CH3)3 + An-, C2H4-O-CH(CH3)-CH2-N(CH3)3 + An- oder C2H4-CO-NH-C3H6-N(CH3)3 + An-
- An-
- das Anion einer Mineralsäure, Ameisensäure, Essigsäure, Milchsäure oder -O3SOCH3 bedeuten.
| Beispiel 1 | WT-Konz. in % | Weißgrad | |
| Berger | CIE | ||
| a) | 0,2 | 147,4 | 138,9 |
| b) | 0,5 | 157,4 | 145,2 |
| c) | 1 | 161,9 | 151,5 |
| d) | 1,5 | 169,3 | 151,5 |
| 50 | Teilen China Clay SPS, |
| 50 | Teilen Calciumcarbonat ( Kreide ), |
| 12 | Teilen einer anionischen Kunststoffdispersion eines acrylsäureesterhaltigen Mischpolymerisats mit einem Feststoffgehalt von 48 % (®Acronal S 320 D der BASF), |
| 0,5 | Teilen Polyvinylalkohol und |
| 80 | Teilen Wasser |
| Beispiel | Weißtöner Einsatzkonztr. in % | Weißgrad CIE | Weißgradabfall durch Belichtung | |
| vor Belichtung | nach Belichtung | |||
| 3) | ohne WT | 71,4 | 71 | 0,4 |
| 4 a) | 0,037 | 94,4 | 93,2 | 1,5 |
| 4 b) | 0,065 | 101,8 | 100,8 | 1 |
| 4 c) | 0,088 | 107,4 | 106,1 | 1,3 |
Claims (6)
- Weißgetönte, feinteilige Polyacrylnitrile mit einer Teilchengröße kleiner 1 µm, wobei der Weißtöner aus der Reihe bestehend aus worin
- R
- Ethyl oder Phenyl bedeutet,
- x
- für CH oder N,
- R1
- für CH3 oder CH2-C6H5 und
- R2
- für H oder SO2-CH3 stehen;
- R3
- für NH2, CH3, NH-C3H6-N(CH3)3 + An-, C2H4-N(CH3)3 + An-, CH2-CH(CH3)-N(CH3)3 + An-, CH(CH3)-CH2-N(CH3)3 + An-, C2H4-O-CH(CH3)-CH2-N(CH3)3 + An- oder C2H4-CO-NH-C3H6-N(CH3)3 + An- und
- An-
- das Anion einer Mineralsäure, Ameisensäure, Essigsäure, Milchsäure oder -O3SOCH3 bedeuten,
- Kunststoffdispersion, enthaltendA) 1 bis 30 Gew.-% weißgetönten, feinteiligen Kunststoff gemäß Anspruch 1,B) 1 bis 50 Gew.-% oberflächenaktive Stoffe,C) 0 bis 15 Gew.-% Konservierungsmittel undD) 20 bis 98 Gew.-% Wasser, wobei bis zur Hälfte des Wassers durch hydrotrope Substanzen ersetzt werden kann und sich die Prozentangaben jeweils auf die Summe A + B + D beziehen.
- Kunststoffdispersion, gemäß Anspruch 2, enthaltend5 bis 25 Gew.-% der Komponente A),5 bis 20 Gew.-% der Komponente B) und55 bis 90 Gew.-% der Komponente D).
- Verfahren zur Herstellung der Kunststoffdispersion nach Anspruch 2, dadurch gekennzeichnet, daß der pulverförmige Kunststoff zusammen mit dem entsprechenden Weißtöner, Wasser und oberflächenaktiven Stoffen bei Temperaturen von 60°C bis zur Kochtemperatur gegebenenfalls nach Homogenisierung und Vorzerkleinerung naßzerkleinert werden.
- Verwendung der weißgetönten, feinteiligen Kunststoffe gemäß Anspruch 1 zum Weißtönen von Papierstreichmassen auf Basis synthetischer Bindemittel.
- Papierstreichmassen auf Basis synthetischer Bindemittel, enthaltend weißgetönte, feinteilige Kunststoffe gemäß Anspruch 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI9530524T SI0801700T1 (en) | 1995-01-05 | 1995-12-27 | Use of optically brightened plastics for optically brightening paper-coating compounds and paper-coating compounds optically brightened in this manner |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19500195A DE19500195A1 (de) | 1995-01-05 | 1995-01-05 | Verwendung weißgetönter Kunststoffe zum Weißtönen von Papierstreichmassen und derart weißgetönte Papierstreichmassen |
| DE19500195 | 1995-01-05 | ||
| PCT/EP1995/005133 WO1996021062A1 (de) | 1995-01-05 | 1995-12-27 | Verwendung weissgetönter kunststoffe zum weisstönen von papierstreichmassen und derart weissgetönte papierstreichmassen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0801700A1 EP0801700A1 (de) | 1997-10-22 |
| EP0801700B1 true EP0801700B1 (de) | 2001-11-14 |
Family
ID=7751028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95943210A Expired - Lifetime EP0801700B1 (de) | 1995-01-05 | 1995-12-27 | Verwendung weissgetönter kunststoffe zum weisstönen von papierstreichmassen und derart weissgetönte papierstreichmassen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US6387296B1 (de) |
| EP (1) | EP0801700B1 (de) |
| JP (1) | JPH10512626A (de) |
| AT (1) | ATE208843T1 (de) |
| DE (2) | DE19500195A1 (de) |
| FI (1) | FI972850A7 (de) |
| WO (1) | WO1996021062A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007085337A1 (en) * | 2006-01-26 | 2007-08-02 | Clariant International Ltd | Process for producing optically brightened paper |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19644014C2 (de) * | 1996-10-31 | 1999-07-22 | Stora Publication Paper Ag | Papier mit Aufzeichnungsschicht und Verfahren zu seiner Herstellung |
| DE19732032A1 (de) * | 1997-07-25 | 1999-01-28 | Bayer Ag | Weißgetönte Polymerisate sowie ihre Verwendung in Streichmassen für die Beschichtung von Substraten |
| DE19732860A1 (de) * | 1997-07-30 | 1999-02-04 | Merck Patent Gmbh | Lasermarkierbare Papiere und Kartonagen |
| FI103801B1 (fi) | 1998-02-24 | 1999-09-30 | Kemira Chemicals Oy | Menetelmä pigmenttien valkaisemiseksi |
| MXPA02001236A (es) | 1999-08-05 | 2002-07-22 | Ciba Sc Holding Ag | Uso de pigmentos blanqueadores para composiciones revestimiento de papel. |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4005098A (en) * | 1968-03-16 | 1977-01-25 | Bayer Aktiengesellschaft | Triazolyl-coumarins |
| EP0074590A2 (de) * | 1981-09-16 | 1983-03-23 | Bayer Ag | Präparationen optischer Aufheller |
Family Cites Families (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE568156A (de) | 1957-06-06 | |||
| US3625952A (en) * | 1967-01-20 | 1971-12-07 | Farlenfabriken Bayer Ag | 7-triazolyl-3-phenyl-coumarins |
| CH530439A (de) * | 1969-06-13 | 1972-11-15 | Ciba Geigy Ag | Verwendung von heterocyclisch substituierten Vinyl-v-triazolen der Cumarinreihe zum Aufhellen von nichttextilen organischen Materialien |
| US4055565A (en) * | 1969-12-30 | 1977-10-25 | Sumitomo Chemical Company, Limited | Optical brightening agents of naphthalimide derivatives |
| US3684764A (en) * | 1970-04-13 | 1972-08-15 | Bennett George Buell | Brightening polyvinyl chloride and polyolefin plastics with 2-naphthylnaphthoxazoles |
| GB1294173A (en) | 1970-06-02 | 1972-10-25 | Ici Ltd | Coating compositions |
| GB1349934A (en) | 1970-08-13 | 1974-04-10 | Ici Ltd | Coating process |
| CH554911A (de) * | 1971-12-30 | 1974-10-15 | Ciba Geigy Ag | Verwendung ausserhalb der textilindustrie von neuen 4,4'divinyldiphenyl-verbindungen als optische aufhellmittel fuer organische materialien. |
| GB1399632A (en) | 1972-07-13 | 1975-07-02 | Leo Pharm Prod Ltd | Sulphamoyl-benzoic acids |
| US3926963A (en) * | 1973-04-20 | 1975-12-16 | Ciba Geigy Ag | New benzoxazolylstilbenes as optical brighteners |
| LU76819A1 (de) * | 1977-02-22 | 1978-10-18 | ||
| DE2902470A1 (de) * | 1979-01-23 | 1980-07-31 | Bayer Ag | Cumarin-verbindungen |
| DE2935638A1 (de) * | 1979-09-04 | 1981-03-12 | Hoechst Ag, 6000 Frankfurt | Disazoverbindungen, verfahren zu ihrer herstellung und ihre verwendung als farbmittel. |
| US4386965A (en) | 1980-07-03 | 1983-06-07 | Ciba-Geigy Corporation | Process for obtaining coating compositions of improved whiteness |
| JPS5725364A (en) * | 1980-07-22 | 1982-02-10 | Showa Kagaku Kogyo Kk | Dyestuff salt |
| DE3112435A1 (de) | 1981-03-28 | 1982-10-07 | Bayer Ag, 5090 Leverkusen | Waessrige aminoplastdispersionen |
| JPS5875151A (ja) * | 1981-10-29 | 1983-05-06 | Fuji Photo Film Co Ltd | 写真印画紙用樹脂コ−テイング紙の製造方法 |
| DE3502038A1 (de) | 1985-01-23 | 1986-07-24 | Sandoz-Patent-GmbH, 7850 Lörrach | Waessrige aufhellerpraeparate und deren verwendung im papierstrich |
| JPH0610739B2 (ja) * | 1985-04-12 | 1994-02-09 | 富士写真フイルム株式会社 | 写真印画紙用支持体およびその製法 |
| JPH0618926B2 (ja) * | 1985-05-02 | 1994-03-16 | 住友化学工業株式会社 | 紫外線吸収剤 |
| US4609591A (en) * | 1985-05-10 | 1986-09-02 | Owens-Corning Fiberglas Corporation | Non-aqueous coating for glass fibers and glass fibers coated therewith |
| DE3627859A1 (de) * | 1986-08-16 | 1988-02-25 | Schoeller F Jun Gmbh Co Kg | Fotografischer papiertraeger mit einer wasserfesten beschichtung aus einem polyolefin |
| DE3643215A1 (de) | 1986-12-18 | 1988-06-30 | Bayer Ag | Weisstoenerhaltige papierstreichmassen |
| JPH02106397A (ja) * | 1988-10-14 | 1990-04-18 | Fuji Photo Film Co Ltd | 熱転写受像材料 |
| US5213888A (en) * | 1988-10-20 | 1993-05-25 | Mitsubishi Paper Mills Limited | Alkyl-substituted 2,2'-(1,4-naphthalenediyl)dibenzoxazole and photographic support comprising the same |
| US5106989A (en) * | 1988-10-20 | 1992-04-21 | Mitsubishi Paper Mills Limited | Alkyl-substituted 2,2'-(1,4-naphthalenediyl)dibenzoxazole and photographic support comprising the same |
| NO903004L (no) | 1989-07-21 | 1991-01-22 | Bayer Ag | Fremgangsmaate for hvittoning av papirbestrykningsmasser samt hvittoningspreparater for fremgangsmaaten. |
| US5198330A (en) * | 1991-10-11 | 1993-03-30 | Eastman Kodak Company | Photographic element with optical brighteners having reduced migration |
| US5302576A (en) * | 1992-01-31 | 1994-04-12 | Kanzaki Paper Mfg. Co., Ltd. | Image-receiving paper for thermal transfer recording system and method of producing it |
| US5317048A (en) * | 1992-09-30 | 1994-05-31 | Great Lakes Chemical Corporation | Ultra white N,N'-ethylene-bis(tetrabromophthalimide) and its production in acetic acid |
| US5362614A (en) * | 1993-02-12 | 1994-11-08 | Fuji Photo Film Co., Ltd. | Photographic printing paper support |
-
1995
- 1995-01-05 DE DE19500195A patent/DE19500195A1/de not_active Withdrawn
- 1995-12-27 AT AT95943210T patent/ATE208843T1/de not_active IP Right Cessation
- 1995-12-27 FI FI972850A patent/FI972850A7/fi unknown
- 1995-12-27 WO PCT/EP1995/005133 patent/WO1996021062A1/de not_active Ceased
- 1995-12-27 JP JP8520717A patent/JPH10512626A/ja active Pending
- 1995-12-27 DE DE59509850T patent/DE59509850D1/de not_active Expired - Fee Related
- 1995-12-27 EP EP95943210A patent/EP0801700B1/de not_active Expired - Lifetime
- 1995-12-27 US US08/860,503 patent/US6387296B1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4005098A (en) * | 1968-03-16 | 1977-01-25 | Bayer Aktiengesellschaft | Triazolyl-coumarins |
| EP0074590A2 (de) * | 1981-09-16 | 1983-03-23 | Bayer Ag | Präparationen optischer Aufheller |
Non-Patent Citations (1)
| Title |
|---|
| "Encyclopedia of ChemicalTechnology", 1978, KIRK-OTHMER, NEW YORK * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007085337A1 (en) * | 2006-01-26 | 2007-08-02 | Clariant International Ltd | Process for producing optically brightened paper |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19500195A1 (de) | 1996-07-11 |
| ATE208843T1 (de) | 2001-11-15 |
| EP0801700A1 (de) | 1997-10-22 |
| FI972850A0 (fi) | 1997-07-03 |
| FI972850L (fi) | 1997-07-03 |
| WO1996021062A1 (de) | 1996-07-11 |
| DE59509850D1 (de) | 2001-12-20 |
| JPH10512626A (ja) | 1998-12-02 |
| US6387296B1 (en) | 2002-05-14 |
| FI972850A7 (fi) | 1997-07-03 |
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Legal Events
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