USRE46913E1 - Optical brightening compositions - Google Patents
Optical brightening compositions Download PDFInfo
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- USRE46913E1 USRE46913E1 US15/477,788 US200915477788A USRE46913E US RE46913 E1 USRE46913 E1 US RE46913E1 US 200915477788 A US200915477788 A US 200915477788A US RE46913 E USRE46913 E US RE46913E
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- formula
- compound
- hydroxyalkyl
- ammonium
- alkyl
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- 0 C.[1*]C.[1*]C.[2*]C.[2*]C.[3*]N([4*])C1=NC(CC2=CC=C(/C=C/C3=C(S(=O)(=O)[O-])C=C(NC4=NC(CC5=CC=CC=C5)=NC(N([3*])[4*])=N4)C=C3)C(C)=C2)=NC(NC2=CC=CC=C2)=N1 Chemical compound C.[1*]C.[1*]C.[2*]C.[2*]C.[3*]N([4*])C1=NC(CC2=CC=C(/C=C/C3=C(S(=O)(=O)[O-])C=C(NC4=NC(CC5=CC=CC=C5)=NC(N([3*])[4*])=N4)C=C3)C(C)=C2)=NC(NC2=CC=CC=C2)=N1 0.000 description 13
- YWFHLXVDIAWPEP-VVRLOGBLSA-E C.C.CCC(C)NC1=NC(NC2=CC(S(=O)(=O)[O-])=C(/C=C/C3=CC=C(CC4=NC(NC5=CC(C)=CC=C5S(=O)(=O)[O-])=NC(CC(CC(=O)[O-])C(=O)[O-])=N4)C=C3C)C=C2)=NC(CC2=CC(S(=O)(=O)[O-])=CC=C2C)=N1.CCC(CC)C1=NC(NC2=CC(S(=O)(=O)[O-])=C(/C=C/C3=CC=C(CC4=NC(NC5=CC=C(C)C=C5)=NC(N(CC(=O)[O-])CC(=O)[O-])=N4)C=C3C)C=C2)=NC(CC2=CC=C(S(=O)(=O)[O-])C=C2)=N1 Chemical compound C.C.CCC(C)NC1=NC(NC2=CC(S(=O)(=O)[O-])=C(/C=C/C3=CC=C(CC4=NC(NC5=CC(C)=CC=C5S(=O)(=O)[O-])=NC(CC(CC(=O)[O-])C(=O)[O-])=N4)C=C3C)C=C2)=NC(CC2=CC(S(=O)(=O)[O-])=CC=C2C)=N1.CCC(CC)C1=NC(NC2=CC(S(=O)(=O)[O-])=C(/C=C/C3=CC=C(CC4=NC(NC5=CC=C(C)C=C5)=NC(N(CC(=O)[O-])CC(=O)[O-])=N4)C=C3C)C=C2)=NC(CC2=CC=C(S(=O)(=O)[O-])C=C2)=N1 YWFHLXVDIAWPEP-VVRLOGBLSA-E 0.000 description 1
- ZDPLIHPVCKFKSA-OUKQBFOZSA-N C[S](c1c(/C=C/c(ccc(Nc2nc(Cl)nc(Nc3ccccc3)n2)c2)c2S(O)(=O)=O)ccc(Nc2nc(Cl)nc(Nc3ccccc3)n2)c1)(O)(=O)=O Chemical compound C[S](c1c(/C=C/c(ccc(Nc2nc(Cl)nc(Nc3ccccc3)n2)c2)c2S(O)(=O)=O)ccc(Nc2nc(Cl)nc(Nc3ccccc3)n2)c1)(O)(=O)=O ZDPLIHPVCKFKSA-OUKQBFOZSA-N 0.000 description 1
- REJHVSOVQBJEBF-OWOJBTEDSA-N Nc1cc(S(O)(=O)=O)c(/C=C/c(ccc(N)c2)c2S(O)(=O)=O)cc1 Chemical compound Nc1cc(S(O)(=O)=O)c(/C=C/c(ccc(N)c2)c2S(O)(=O)=O)cc1 REJHVSOVQBJEBF-OWOJBTEDSA-N 0.000 description 1
- NMMWRNTXSRGOTO-AEAQTZBZSA-E O=C(CC(CC1=NC(CC2=CC=C(/C=C/C3=C(S(=O)(=O)O[Na])C=C(NC4=NC(CC5=CC(S(=O)(=O)O[Na])=CC=C5[Na])=NC(NC([Na])C[Na])=N4)C=C3)C([Na])=C2)=NC(NC2=CC([Na])=CC=C2S(=O)(=O)O[Na])=N1)C(=O)O[Na])O[Na].O=C(CN(CC(=O)O[Na])C1=NC(CC2=CC=C(/C=C/C3=C(S(=O)(=O)O[Na])C=C(NC4=NC(CC5=CC=C(S(=O)(=O)O[Na])C=C5)=NC(N(C[Na])C[Na])=N4)C=C3)C([Na])=C2)=NC(NC2=CC=C([Na])C=C2)=N1)O[Na].O=C=O.O=C=O.O=C=O.O=C=O.O=S(=O)=O.O=S(=O)=O.O=S(=O)=O.O=S(=O)=O.O=S(=O)=O Chemical compound O=C(CC(CC1=NC(CC2=CC=C(/C=C/C3=C(S(=O)(=O)O[Na])C=C(NC4=NC(CC5=CC(S(=O)(=O)O[Na])=CC=C5[Na])=NC(NC([Na])C[Na])=N4)C=C3)C([Na])=C2)=NC(NC2=CC([Na])=CC=C2S(=O)(=O)O[Na])=N1)C(=O)O[Na])O[Na].O=C(CN(CC(=O)O[Na])C1=NC(CC2=CC=C(/C=C/C3=C(S(=O)(=O)O[Na])C=C(NC4=NC(CC5=CC=C(S(=O)(=O)O[Na])C=C5)=NC(N(C[Na])C[Na])=N4)C=C3)C([Na])=C2)=NC(NC2=CC=C([Na])C=C2)=N1)O[Na].O=C=O.O=C=O.O=C=O.O=C=O.O=S(=O)=O.O=S(=O)=O.O=S(=O)=O.O=S(=O)=O.O=S(=O)=O NMMWRNTXSRGOTO-AEAQTZBZSA-E 0.000 description 1
Classifications
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- 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
-
- 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
- D21H17/66—Salts, e.g. alums
-
- 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
- D21H21/16—Sizing or water-repelling 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
- D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching
Definitions
- the instant invention relates to mixed salts of optical brighteners comprising Mg 2+ which provide superior optical brightening effects when applied to the surface of paper.
- a high level of whiteness is an important parameter for the end-user of paper products.
- the most important raw materials of the papermaking industry are cellulose, pulp and lignin which naturally absorb blue light and therefore are yellowish in color and impart a dull appearance to the paper.
- Optical brighteners are used in the papermaking industry to compensate for the absorption of blue light by absorbing UV-light with a maximum wavelength of 350-360 nm and converting it into visible blue light with a maximum wavelength of 440 nm.
- optical brighteners may be added either at the wet end of the paper machine, or to the surface of paper, or at both points. In general, it is not possible to achieve the whiteness levels required of higher-quality papers by addition at the wet end alone.
- a common method of adding optical brightener to the surface of paper is by application of an aqueous solution of the optical brightener at the size-press together with a sizing agent, typically a native starch or an enzymatically or chemically modified starch.
- a sizing agent typically a native starch or an enzymatically or chemically modified starch.
- a preformed sheet of paper is passed through a two-roll nip, the entering nip being flooded with sizing solution. The paper absorbs some of the solution, the remainder being removed in the nip.
- the sizing solution can contain other chemicals designed to provide specific properties. These include defoamers, wax emulsions, dyes, pigments and inorganic salts.
- GB 1 239 818 discloses hexasulphonated optical brighteners derived from triazinylaminostilbenes. Examples 1 to 6 disclose their sodium salts. Magnesium is only mentioned in a list of possible counterions for the hexasulphonated optical brighteners, starch as a component in a surface sizing composition is also only mentioned in a list of possible binding agents.
- optical brighteners of formula (1) when applied to the surface of paper, optionally in combination with magnesium salts, in a starch sizing composition give enhanced whitening effects.
- the molar ratio of the Mg 2+ to the further cation in M is preferably of from between 0.01 to 99.99 and 99.99 to 0.01, more preferably of from 20 to 80 and 99.99 to 0.01, even more preferably of from 50 to 50 and 99.99 to 0.01.
- An alkali metal cation is preferably Li + , Na + or K + .
- An alkaline earth metal cation other than Mg 2+ is preferably Ca 2+ .
- the further cation in M is selected from the group consisting of H + , Li + , Na + , K + , Ca 2+ , N-methyl-N,N-diethanolammonium, N,N-dimethyl-N-ethanolammonium, tri-ethanolammonium, tri-isopropanolammonium and mixtures thereof.
- Preferred compounds of formula (1) are those wherein R 3 represents hydrogen, methyl, ethyl, n-propyl, iso-propyl, ⁇ -hydroxyethyl, ⁇ -hydroxypropyl, CH 2 CO 2 ⁇ , CH 2 CH 2 CONH 2 or CH 2 CH 2 CN and R 4 represents methyl, ethyl, n-propyl, isopropyl, 2-butyl, ⁇ -hydroxyethyl, ⁇ -hydroxypropyl, CH 2 CO 2 ⁇ , CH(CO 2 ⁇ )CH 2 CO 2 ⁇ , CH(CO 2 ⁇ )CH 2 CH 2 CO 2 ⁇ or benzyl.
- the cation CAT may be introduced into the reaction A, B and/or C via M1 in formula (13) comprising Mg 2+ and/or M2 in formula (10) comprising Mg 2+ , or by the addition of a magnesium salt MS1 as further component to the reaction A, B and/or C.
- the magnesium salt MS1 is preferably selected from the group consisting of magnesium acetate, magnesium bromide, magnesium chloride, magnesium formate, magnesium iodide, magnesium nitrate, magnesium sulphates, magnesium thiosulphate, magnesium hydroxide, magnesium carbonate, magnesium hydrogencarbonate and mixtures thereof; more preferably the magnesium salt MS1 is magnesium hydroxide, magnesium chloride, magnesium sulphate or magnesium thiosulphate. Even more preferably, the magnesium salt MS1 is magnesium hydroxide, magnesium chloride or magnesium thiosulfate.
- M1 and M2 independently from each other are selected from the group consisting of H + , Li + , Na + , K + , Ca 2+ , Mg 2+ , N-methyl-N,N-diethanolammonium, N,N-dimethyl-N-ethanolammonium, tri-ethanolammonium, tri-isopropanolammonium and mixtures thereof; more preferably M1 and M2 independently from each other are selected from the group consisting of H + , Na + , K + and Mg 2+ ; even more preferably, M1 and M2 independently from each other are selected from the group consisting of Na + , K + and Mg 2+ .
- Each reaction A, B and C is preferably carried out in water or in a mixture of water and non-aqueous organic solvent.
- the compound of formula (11) is suspended in water, or the compound of formula (11) is dissolved in a solvent.
- a preferable solvent is acetone.
- compound of formula (11) is used as a suspension in water.
- Each compound of formula (10), (13) and (15) may be used with or without dilution, in case of dilution the compounds of formula (10), (13) or (15) are preferably used in the form of an aqueous solution or suspension.
- the compound of formula (10) is reacted in 0 to 10 mol-% excess with respect to compound of formula (11).
- One mol equivalent of compound of formula (13) is reacted with two mol equivalents of compound of formula (12) preferably in 0 to 10 mol-% excess with respect to compound of formula (12).
- Two equivalents of compound of formula (15) are reacted with one mol equivalent of compound of formula (14), preferably compound of formula (15) is reacted in 0 to 30 mol-% excess with respect to compound of formula (14).
- any reaction A, B and C is done between atmospheric pressure and 10 bar, more preferably under atmospheric pressure.
- reaction temperature is preferably of from ⁇ 10 to 20° C.
- reaction temperature is preferably of from 20 to 60° C.
- reaction temperature is preferably of from 60 to 102° C.
- Reaction A is preferably carried out under acidic to neutral pH conditions, more preferably the pH is of from of 2 to 7.
- Reaction B is preferably carried out under weakly acidic to weakly alkaline conditions, more preferably the pH is of from 4 to 8.
- Reaction C is preferably carried out under weakly acidic to alkaline conditions, more preferably the pH is of from 5 to 11.
- the pH of each reaction A, B and C is generally controlled by addition of a suitable base, the choice of base being dictated by the desired product composition.
- Preferred bases are selected from the group consisting of aliphatic tertiary amines and of hydroxides, carbonates and bicarbonates of alkali and/or alkaline earth metals and of mixtures thereof.
- Preferred alkali and alkaline earth metals are selected from the group consisting of lithium, sodium, potassium, calcium, magnesium.
- Preferred aliphatic tertiary amines are N-methyl-N,N-di-ethanolamine, N,N-dimethyl-N-ethanolamine, tri-ethanolamine and tri-isopropanolamine. Where a combination of two or more different bases is used, the bases may be added in any order, or at the same time. More preferably, for adjusting the pH, a basic magnesium salt is used.
- the basic magnesium salt is selected from the group consisting of magnesium hydroxide, magnesium carbonate, magnesium hydrogencarbonate and mixtures thereof; more preferably the basic magnesium salt is magnesium hydroxide.
- the base to control the pH is also a basic magnesium salt, more preferably it is the same basic magnesium salt as used firstly in the reaction A and/or B.
- preferable acids are selected from the group consisting of hydrochloric acid, sulphuric acid, formic acid and acetic acid.
- Solutions containing one or more compounds of general formula (1) may optionally be desalinated by membrane filtration.
- the membrane filtration process is preferably that of ultrafiltration.
- thin-film membranes are used.
- the membrane is made of polysulphone, polyvinylidenefluoride or cellulose acetate.
- a process for the preparation of compound of formula (1) characterized by mixing a compound of formula (20) with a component b), which is a magnesium salt MS2, in aqueous medium;
- R 1 , R 2 , R 3 and R 4 have the definition as described above, also in all their preferred embodiments; and wherein
- the mixing is done in aqueous solution.
- the magnesium salt MS2 is selected from the group consisting of magnesium acetate, magnesium bromide, magnesium chloride, magnesium formate, magnesium iodide, magnesium nitrate, magnesium sulphate and magnesium thiosulphate.
- the magnesium salt is magnesium chloride, magnesium sulphate or magnesium thiosulphate. Even more preferably, the magnesium salt is magnesium chloride or magnesium thiosulphate.
- mixing temperature is of from 0 to 100° C.
- the mixing is done at atmospheric pressure.
- the mixing time is of from 5 second to 24 hours.
- organic solvents are selected from the group consisting of C 1 -C 4 alcohols and acetone.
- compound of formula (20) is used in a concentration of from 0.01 g/l to 20 g/l for the mixing.
- 0.1 to 50 more preferably 0.1 to 45, even more preferably 0.1 to 40, especially 0.1 to 15, more especially 0.15 to 10 parts of component (b) are present in the aqueous medium per part of component of formula (20).
- the sizing composition is an aqueous composition.
- sizing compositions containing 0.2 to 30, preferably 1 to 15 grams per liter of the compound of formula (1), may be used.
- the sizing composition also contains one or more binding agents, preferably 1, 2, 3, 4 or 5 binding agents, more preferably 1, 2 or 3, even more preferably 1 or 2 binding agents.
- the sizing composition contains the binding agent preferably in a concentration of preferably 2 to 15% by weight, based on the total weight of the sizing composition.
- the pH is typically in the range 5-9, preferably 6-8.
- the binding agent is preferably selected from the group consisting of starch, gelatin, alkali metal alginates, casein, hide glue, protein, cellulose derivatives, for example hydroxyethylcellulose or carboxymethylcellulose, polyvinylalcohol, polyvinylidenechloride, polyvinylpyrrolidone, polyethylene oxide, polyacrylates, saponified copolymer of vinylacetate and maleic anhydride and mixtures thereof.
- the binding agent is starch, polyvinylalcohol, carbomethylcellulose or mixtures thereof.
- the binding agent or size is even more preferably starch.
- the starch is selected from the group consisting of native starch, enzymatically modified starch and chemically modified starch. Modified starches are preferably oxidized starch, hydroxyethylated starch or acetylated starch.
- the native starch is preferably an anionic starch, an cationic starch, or an amphoteric starch. While the starch source may be any, preferably the starch sources are corn, wheat, potato, rice, maize, tapioca or sago. Polyvinyl alcohol and/or carboxymethylcellulose are preferably used as secondary binding agent.
- the sizing composition may comprise by-products formed during the preparation of the compound of formula (1) as well as other conventional paper additives.
- paper additives are antifreezes, biocides, defoamers, wax emulsions, dyes, inorganic salts, solubilizing aids, preservatives, complexing agents, thickeners, surface sizing agents, cross-linkers, pigments, special resins etc. and mixtures thereof.
- a defoamer, a wax emulsion, a dye and/or a pigment is added to the sizing composition.
- the cation content was determined by capillary electrophoresis.
- Sizing compositions are prepared by adding an optical brightener of formula (21) in such an amount, that a range of final concentrations of from 2.5 to 12.5 g/l of optical brightener is achieved, to a stirred, aqueous solution of magnesium chloride (final concentration is 8 g/l) and an anionic oxidized potato starch (Perfectamyl A4692 from AVEBE B.A.) (final concentration is 50 g/l) at 60° C.
- the sizing solution is allowed to cool, then poured between the moving rollers of a laboratory size-press and applied to a commercial 75 g/m 2 AKD (alkyl ketene dimer) sized, bleached paper base sheet.
- the treated paper is dried for 5 minutes at 70° C. in a flat bed drier.
- the dried paper is allowed to condition, then measured for CIE whiteness on a calibrated Elrepho spectrophotometer.
- Example is repeated both in the absence of magnesium chloride, i.e. only the sodium salt of the optical brightener is present, and with the magnesium chloride replaced by an equivalent amount of calcium chloride.
- Sizing solutions are prepared by adding an optical brightener of formula (22) in such an amount, that a range of final concentrations of from 2.0 to 10.0 g/l of optical brightener is achieved, to a stirred, aqueous solution of magnesium chloride (final concentration is 8 g/l) and an anionic oxidized potato starch (Perfectamyl A4692 from AVEBE B.A.) (final concentration 50 g/l) at 60° C.
- the sizing solution is allowed to cool, then poured between the moving rollers of a laboratory size-press and applied to a commercial 75 g/m 2 AKD (alkyl ketene dimer) sized, bleached paper base sheet.
- the treated paper is dried for 5 minutes at 70° C. in a flat bed drier.
- the dried paper is allowed to condition, then measured for CIE whiteness on a calibrated Elrepho spectrophotometer.
- the Example is repeated both in the absence of magnesium chloride, and with the magnesium chloride replaced by an equivalent amount of calcium chloride.
- Sizing compositions are prepared by adding an optical brightener of formula (22) in such an amount, that a range of final concentrations of from 0 to 12.5 g/l of optical brightener is achieved, to a stirred, aqueous solutions of magnesium chloride (final concentrations are 6.25 and 12.5 g/l) and an anionic oxidized corn starch (final concentration 50 g/l) (Penford Starch 260) at 60° C.
- Each sizing solution is allowed to cool, then poured between the moving rollers of a laboratory size-press and applied to a commercial 75 g/m 2 AKD (alkyl ketene dimer) sized, bleached paper base sheet. The treated paper is dried for 5 minutes at 70° C. in a flat bed drier.
- Sizing compositions are prepared by adding an optical brightener of formula (22) in such an amount, that a range of final concentrations of from 0 to 12.5 g/l of optical brightener is achieved, to a stirred, aqueous solutions of magnesium thiosulphate hexahydrate (final concentrations are 10 and 20 g/l) and an anionic oxidized corn starch (final concentration 50 g/l) (Penford Starch 260) at 60° C.
- the sizing solution is allowed to cool, then poured between the moving rollers of a laboratory size-press and applied to a commercial 75 g/m 2 AKD (alkyl ketene dimer) sized, bleached paper base sheet.
- the treated paper is dried for 5 minutes at 70° C. in a flat bed drier.
- Comparative optical brightening solution 7 is prepared by dissolving compound of formula (22) in water with a final concentration of 0.125 mol/kg.
- Sizing compositions are prepared by adding an aqueous solution of an optical brightener, prepared according to example 5, in such an amount, that final concentrations of from 0 to 80 g/l of the aqueous solution of the optical brightener, prepared according to example 5, are achieved, to a stirred, aqueous solution of an anionic oxidized potato starch (Perfectamyl A4692 from AVEBE B.A.) (final concentration 50 g/l) at 60° C.
- Each sizing solution is allowed to cool, then poured between the moving rollers of a laboratory size-press and applied to a commercial 75 g/m 2 AKD (alkyl ketene dimer) sized, bleached paper base sheet. The treated paper is dried for 5 minutes at 70° C. in a flat bed drier.
- Sizing compositions are prepared by adding an aqueous solution of an optical brightener prepared according to example 6, in such an amount, that final concentrations of from 0 to 80 g/l of the aqueous solution of the optical brightener, prepared according to example 6, are achieved, to a stirred, aqueous solution of an anionic oxidized potato starch (Perfectamyl A4692 from AVEBE B.A.) (final concentration 50 g/l) at 60° C.
- Each sizing solution is allowed to cool, then poured between the moving rollers of a laboratory size-press and applied to a commercial 75 g/m 2 AKD (alkyl ketene dimer) sized, bleached paper base sheet. The treated paper is dried for 5 minutes at 70° C. in a flat bed drier.
- Sizing compositions are prepared by adding an aqueous solution of an optical brightener prepared according to example 7, in such an amount, that final concentrations of from 0 to 80 g/l of the aqueous solution of the optical brightener, prepared according to example 6, are achieved, to a stirred, aqueous solution of an anionic oxidized potato starch (Perfectamyl A4692 from AVEBE B.A.) (final concentration 50 g/l) at 60° C.
- Each sizing solution is allowed to cool, then poured between the moving rollers of a laboratory size-press and applied to a commercial 75 g/m 2 AKD (alkyl ketene dimer) sized, bleached paper base sheet. The treated paper is dried for 5 minutes at 70° C. in a flat bed drier.
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
- Coloring (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/477,788 USRE46913E1 (en) | 2008-03-26 | 2009-03-12 | Optical brightening compositions |
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08102906 | 2008-03-26 | ||
EP08102906 | 2008-03-26 | ||
EP08171223 | 2008-12-10 | ||
EP08171223 | 2008-12-10 | ||
CH08171480 | 2008-12-12 | ||
EP08171480 | 2008-12-12 | ||
US12/934,170 US8821688B2 (en) | 2008-03-26 | 2009-03-12 | Optical brightening compositions |
PCT/EP2009/052919 WO2009118247A1 (en) | 2008-03-26 | 2009-03-12 | Improved optical brightening compositions |
US15/477,788 USRE46913E1 (en) | 2008-03-26 | 2009-03-12 | Optical brightening compositions |
Publications (1)
Publication Number | Publication Date |
---|---|
USRE46913E1 true USRE46913E1 (en) | 2018-06-26 |
Family
ID=40513946
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/934,170 Ceased US8821688B2 (en) | 2008-03-26 | 2009-03-12 | Optical brightening compositions |
US15/477,788 Active 2029-08-24 USRE46913E1 (en) | 2008-03-26 | 2009-03-12 | Optical brightening compositions |
US12/934,161 Active 2029-08-16 US8845861B2 (en) | 2000-03-26 | 2009-03-12 | Optical brightening compositions |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/934,170 Ceased US8821688B2 (en) | 2008-03-26 | 2009-03-12 | Optical brightening compositions |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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US12/934,161 Active 2029-08-16 US8845861B2 (en) | 2000-03-26 | 2009-03-12 | Optical brightening compositions |
Country Status (16)
Country | Link |
---|---|
US (3) | US8821688B2 (de) |
EP (2) | EP2260146B1 (de) |
JP (3) | JP2011515547A (de) |
KR (2) | KR101631871B1 (de) |
CN (2) | CN101999020B (de) |
AR (2) | AR071088A1 (de) |
AU (2) | AU2009228721A1 (de) |
BR (2) | BRPI0909829B1 (de) |
CA (2) | CA2719528C (de) |
ES (2) | ES2387941T7 (de) |
HK (1) | HK1152356A1 (de) |
IL (2) | IL208006A0 (de) |
PT (2) | PT2260145E (de) |
TW (2) | TWI465623B (de) |
WO (2) | WO2009118248A2 (de) |
ZA (2) | ZA201006302B (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1712677A1 (de) * | 2005-04-08 | 2006-10-18 | Clariant International Ltd. | Wässerige Lösungen von optischen Aufhellern |
US8758886B2 (en) * | 2005-10-14 | 2014-06-24 | International Paper Company | Recording sheet with improved image dry time |
AU2009223838B2 (en) | 2008-03-03 | 2012-07-26 | The University Of Miami | Allogeneic cancer cell-based immunotherapy |
CA2718884C (en) | 2008-03-20 | 2016-11-22 | University Of Miami | Heat shock protein gp96 vaccination and methods of using same |
CA2719528C (en) * | 2008-03-26 | 2016-05-31 | Clariant Finance (Bvi) Limited | Improved optical brightening compositions |
ATE494423T1 (de) * | 2008-06-11 | 2011-01-15 | Kemira Germany Gmbh | Zusammensetzung und verfahren zur papierbleichung |
US20100129553A1 (en) * | 2008-11-27 | 2010-05-27 | International Paper Company | Optical Brightening Compositions For High Quality Inkjet Printing |
KR20110089364A (ko) | 2008-11-27 | 2011-08-05 | 클라리언트 파이넌스 (비브이아이)리미티드 | 고품질 잉크 젯 인쇄용의 개선된 형광 증백 조성물 |
RU2556635C2 (ru) * | 2009-12-02 | 2015-07-10 | Клариант Финанс (Бви) Лимитед | Концентрированные стабильные в хранении водные растворы оптических отбеливателей |
TWI506183B (zh) * | 2010-02-11 | 2015-11-01 | Clariant Finance Bvi Ltd | 於施漿壓印應用中用於調色光之水性上漿組成物 |
KR20130123356A (ko) | 2010-07-01 | 2013-11-12 | 클라리언트 파이넌스 (비브이아이)리미티드 | 코팅 적용분야에서의 표백 및 쉐이딩용 수성 조성물 |
CN102959155B (zh) * | 2010-07-01 | 2016-03-16 | 科莱恩金融(Bvi)有限公司 | 在涂料应用中用于遮蔽的水性组合物 |
ES2676171T3 (es) * | 2010-07-23 | 2018-07-17 | Archroma Ip Gmbh | Método para preparar papel blanco |
ITMI20111701A1 (it) * | 2011-09-21 | 2013-03-22 | 3V Sigma Spa | Composizioni per il trattamento della carta |
EP2781648B1 (de) | 2013-03-21 | 2016-01-06 | Clariant International Ltd. | Optische Aufhellungsmittel für Tintenstrahldruck hoher Qualität |
EP3294561B1 (de) * | 2015-10-02 | 2020-09-09 | Hewlett-Packard Development Company, L.P. | Dimensionierungszusammensetzungen |
ES2703689T3 (es) * | 2016-05-17 | 2019-03-12 | Blankophor Gmbh & Co Kg | Agentes blanqueadores fluorescentes y mezclas de los mismos |
EP3710632B1 (de) * | 2017-12-22 | 2021-12-01 | Archroma IP GmbH | Aufheller zum aufhellern von papier |
Citations (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB760982A (en) | 1954-04-20 | 1956-11-07 | Sidney Flavel & Company Ltd | Improvements relating to hotplates for gas cookers and the like |
GB773152A (en) | 1953-11-26 | 1957-04-24 | Geigy Ag J R | Improvements relating to bis-triazinylamino stilbene compounds and their use as optical brightening agents |
GB976822A (en) | 1961-12-01 | 1964-12-02 | Ciba Ltd | New bistriazinylaminostilbene derivatives |
GB1140415A (en) | 1966-03-15 | 1969-01-22 | Kurashiki Rayon Kk | Paper sizing composition |
US3479349A (en) * | 1967-08-03 | 1969-11-18 | Geigy Chem Corp | Polysulfonated bis-s-triazinylamino-stilbene-2,2'-disulfonic acids |
GB1174631A (en) | 1967-05-03 | 1969-12-17 | Bayer Ag | Brightening Agents of the Bis-Triazinylaminostilbene Series |
DE1811715A1 (de) | 1968-11-29 | 1970-06-18 | Bayer Ag | Triazinylaminostilbenderivate |
US3532692A (en) | 1967-05-02 | 1970-10-06 | Bayer Ag | Brightening agents of the bistriazinylaminostilbene series |
GB1293804A (en) | 1968-10-31 | 1972-10-25 | Ciba Geigy Ag | Triazinylaminostilbene compounds and their use as optical brighteners |
US3728275A (en) | 1970-10-13 | 1973-04-17 | Ciba Geigy Corp | Preparations containing concentrated aqueous asymmetrically substituted bis-triazinylaminostilbenes and the use of the preparations for optical brightening |
US4025507A (en) * | 1973-07-02 | 1977-05-24 | Sandoz Ltd. | Bis-(triazinylamino) stilbene compounds |
DE2715864A1 (de) | 1976-04-14 | 1977-10-27 | Ciba Geigy Ag | Verfahren zum optischen aufhellen von papier |
GB1526004A (en) | 1975-02-28 | 1978-09-27 | Ciba Geigy Ag | Aqueous storage-stable dispersions of water-soluble compounds |
EP0032483A2 (de) | 1980-01-14 | 1981-07-22 | Ciba-Geigy Ag | Stabile, wässrige Formulierungen von Stilbenaufhellern |
JPS58222156A (ja) | 1982-06-17 | 1983-12-23 | Showa Kagaku Kogyo Kk | アニオン基を有する染料またはスチルベン系螢光増白剤の安定な濃厚水溶液の製法 |
US4466900A (en) * | 1981-09-22 | 1984-08-21 | Ciba-Geigy Corporation | Process for the preparation of fluorescent brightener formulations which are stable on storage |
JPS62106965A (ja) | 1985-11-05 | 1987-05-18 | Shin Nisso Kako Co Ltd | 螢光増白剤 |
US4764176A (en) | 1985-07-22 | 1988-08-16 | Sandoz Ltd. | Method for preventing the brightening effect of optical brightening agents on textiles |
WO1996000220A1 (en) | 1994-06-24 | 1996-01-04 | Hickson International Plc | S-triazinylaminostilbene derivatives and their use as optical whitening agents |
WO1996000221A1 (en) | 1994-06-23 | 1996-01-04 | Clariant Finance (Bvi) Limited | Optical brightening agents |
WO1998042685A1 (en) | 1997-03-25 | 1998-10-01 | Ciba Specialty Chemicals Holding Inc. | Fluorescent whitening agents |
EP0899373A1 (de) | 1997-08-28 | 1999-03-03 | Ciba SC Holding AG | Verfahren zur Erhöhung des Weissgrades eines Lignin enthaltenden Zellstoffs bei seiner Herstellung |
US6153122A (en) * | 1997-05-23 | 2000-11-28 | Ciba Specialty Chemicals Corporation | Triazinylaminostilbene compounds |
WO2003044275A1 (en) | 2001-11-21 | 2003-05-30 | Clariant International Ltd | Improvements relating to optical brighteners |
US6890454B2 (en) | 2001-01-10 | 2005-05-10 | Clariant Finance (Bvi) Limited | Optical brighteners compositions their production and their use |
CA2553556A1 (en) | 2004-03-05 | 2005-10-06 | Clariant Finance (Bvi) Limited | Concentrated optical brightener solutions |
US7060201B2 (en) | 2001-10-19 | 2006-06-13 | Clariant Finance (Bvi) Limited | Optical brighteners their composition their production and their use |
EP1763519A1 (de) | 2004-06-28 | 2007-03-21 | Clariant International Ltd. | Optische aufheller betreffende verbesserung |
WO2007048720A1 (en) | 2005-10-24 | 2007-05-03 | Ciba Specialty Chemicals Holding Inc. | A composition for whitening paper |
US20070277950A1 (en) * | 2006-06-01 | 2007-12-06 | Skaggs Benny J | Surface treatment of substrate or paper/paperboard products using optical brightening agent |
US20080066878A1 (en) * | 2006-06-02 | 2008-03-20 | Nguyen Xuan T | Process for manufacturing pulp, paper and paperboard products |
WO2009118247A1 (en) | 2008-03-26 | 2009-10-01 | Clariant International Ltd | Improved optical brightening compositions |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH597204A5 (de) * | 1973-02-16 | 1978-03-31 | Sandoz Ag | |
JPH08184939A (ja) * | 1994-12-28 | 1996-07-16 | Fuji Photo Film Co Ltd | キャンバスフォト写真印画紙用支持体 |
MY125712A (en) * | 1997-07-31 | 2006-08-30 | Hercules Inc | Composition and method for improved ink jet printing performance |
CA2382002A1 (en) * | 1999-09-10 | 2001-03-22 | Ciba Specialty Chemicals Holding Inc. | Triazinylaminostilbene derivative as fluorescent whitening agents |
DE10149313A1 (de) * | 2001-10-05 | 2003-04-17 | Bayer Ag | Verwendung wässriger Aufhellerpräparationen zum Aufhellen von natürlichen und synthetischen Materialien |
US7270771B2 (en) * | 2002-07-05 | 2007-09-18 | Ciba Specialty Chemicals Corporation | Triazinylaminostilbene disulphonic acid mixtures |
JP2006076182A (ja) * | 2004-09-10 | 2006-03-23 | Konica Minolta Holdings Inc | インクジェット記録用紙 |
CA2728278C (en) * | 2008-06-20 | 2016-06-28 | Zheng Tan | Composition and recording sheet with improved optical properties |
-
2009
- 2009-03-12 CA CA2719528A patent/CA2719528C/en active Active
- 2009-03-12 BR BRPI0909829A patent/BRPI0909829B1/pt active IP Right Grant
- 2009-03-12 EP EP09724296.0A patent/EP2260146B1/de active Active
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- 2009-03-26 AR ARP090101087A patent/AR071088A1/es active IP Right Grant
- 2009-03-26 AR ARP090101088A patent/AR071089A1/es active IP Right Grant
-
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- 2010-09-02 ZA ZA2010/06302A patent/ZA201006302B/en unknown
- 2010-09-02 ZA ZA2010/06303A patent/ZA201006303B/en unknown
- 2010-09-06 IL IL208006A patent/IL208006A0/en unknown
- 2010-09-19 IL IL208240A patent/IL208240A0/en unknown
-
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- 2011-06-21 HK HK11106305.4A patent/HK1152356A1/xx not_active IP Right Cessation
-
2014
- 2014-12-15 JP JP2014253266A patent/JP6001629B2/ja active Active
Patent Citations (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB773152A (en) | 1953-11-26 | 1957-04-24 | Geigy Ag J R | Improvements relating to bis-triazinylamino stilbene compounds and their use as optical brightening agents |
GB760982A (en) | 1954-04-20 | 1956-11-07 | Sidney Flavel & Company Ltd | Improvements relating to hotplates for gas cookers and the like |
GB976822A (en) | 1961-12-01 | 1964-12-02 | Ciba Ltd | New bistriazinylaminostilbene derivatives |
GB1140415A (en) | 1966-03-15 | 1969-01-22 | Kurashiki Rayon Kk | Paper sizing composition |
US3532692A (en) | 1967-05-02 | 1970-10-06 | Bayer Ag | Brightening agents of the bistriazinylaminostilbene series |
GB1174631A (en) | 1967-05-03 | 1969-12-17 | Bayer Ag | Brightening Agents of the Bis-Triazinylaminostilbene Series |
GB1239818A (en) | 1967-08-03 | 1971-07-21 | Geigy Ag J R | Polysulfonated bis-s-triazinylamino-stilbene-2,2'-disulfonic acids |
US3479349A (en) * | 1967-08-03 | 1969-11-18 | Geigy Chem Corp | Polysulfonated bis-s-triazinylamino-stilbene-2,2'-disulfonic acids |
GB1293804A (en) | 1968-10-31 | 1972-10-25 | Ciba Geigy Ag | Triazinylaminostilbene compounds and their use as optical brighteners |
DE1811715A1 (de) | 1968-11-29 | 1970-06-18 | Bayer Ag | Triazinylaminostilbenderivate |
GB1240020A (en) | 1968-11-29 | 1971-07-21 | Bayer Ag | Triazinyl-aminostilbene derivatives |
US3728275A (en) | 1970-10-13 | 1973-04-17 | Ciba Geigy Corp | Preparations containing concentrated aqueous asymmetrically substituted bis-triazinylaminostilbenes and the use of the preparations for optical brightening |
US4025507A (en) * | 1973-07-02 | 1977-05-24 | Sandoz Ltd. | Bis-(triazinylamino) stilbene compounds |
GB1526004A (en) | 1975-02-28 | 1978-09-27 | Ciba Geigy Ag | Aqueous storage-stable dispersions of water-soluble compounds |
DE2715864A1 (de) | 1976-04-14 | 1977-10-27 | Ciba Geigy Ag | Verfahren zum optischen aufhellen von papier |
EP0032483A2 (de) | 1980-01-14 | 1981-07-22 | Ciba-Geigy Ag | Stabile, wässrige Formulierungen von Stilbenaufhellern |
JPS56104970A (en) | 1980-01-14 | 1981-08-21 | Ciba Geigy Ag | Stable aqueous composition of stilbene fluorescent whitener |
US4466900A (en) * | 1981-09-22 | 1984-08-21 | Ciba-Geigy Corporation | Process for the preparation of fluorescent brightener formulations which are stable on storage |
JPS58222156A (ja) | 1982-06-17 | 1983-12-23 | Showa Kagaku Kogyo Kk | アニオン基を有する染料またはスチルベン系螢光増白剤の安定な濃厚水溶液の製法 |
US4764176A (en) | 1985-07-22 | 1988-08-16 | Sandoz Ltd. | Method for preventing the brightening effect of optical brightening agents on textiles |
JPS62106965A (ja) | 1985-11-05 | 1987-05-18 | Shin Nisso Kako Co Ltd | 螢光増白剤 |
WO1996000221A1 (en) | 1994-06-23 | 1996-01-04 | Clariant Finance (Bvi) Limited | Optical brightening agents |
US5873913A (en) * | 1994-06-23 | 1999-02-23 | Clariant Finance (Bvi) Limited | Optical brightening agents |
WO1996000220A1 (en) | 1994-06-24 | 1996-01-04 | Hickson International Plc | S-triazinylaminostilbene derivatives and their use as optical whitening agents |
WO1998042685A1 (en) | 1997-03-25 | 1998-10-01 | Ciba Specialty Chemicals Holding Inc. | Fluorescent whitening agents |
US6153122A (en) * | 1997-05-23 | 2000-11-28 | Ciba Specialty Chemicals Corporation | Triazinylaminostilbene compounds |
EP0899373A1 (de) | 1997-08-28 | 1999-03-03 | Ciba SC Holding AG | Verfahren zur Erhöhung des Weissgrades eines Lignin enthaltenden Zellstoffs bei seiner Herstellung |
US8845861B2 (en) * | 2000-03-26 | 2014-09-30 | Clariant Finance (Bvi) Limited | Optical brightening compositions |
US6890454B2 (en) | 2001-01-10 | 2005-05-10 | Clariant Finance (Bvi) Limited | Optical brighteners compositions their production and their use |
US7060201B2 (en) | 2001-10-19 | 2006-06-13 | Clariant Finance (Bvi) Limited | Optical brighteners their composition their production and their use |
US7198731B2 (en) | 2001-11-21 | 2007-04-03 | Clariant Finance (Bvi) Limited | Optical brighteners |
WO2003044275A1 (en) | 2001-11-21 | 2003-05-30 | Clariant International Ltd | Improvements relating to optical brighteners |
CA2553556A1 (en) | 2004-03-05 | 2005-10-06 | Clariant Finance (Bvi) Limited | Concentrated optical brightener solutions |
US20070186358A1 (en) | 2004-03-05 | 2007-08-16 | Jackson Andrew C | Concentrated optical brightener solutions |
US7812156B2 (en) | 2004-06-28 | 2010-10-12 | Clariant Finance (Bvi) Limited | Optical brightening agents |
EP1763519A1 (de) | 2004-06-28 | 2007-03-21 | Clariant International Ltd. | Optische aufheller betreffende verbesserung |
US20070245503A1 (en) | 2004-06-28 | 2007-10-25 | Jackson Andrew C | Improvements Relating to Optical Brightening Agents |
WO2007048720A1 (en) | 2005-10-24 | 2007-05-03 | Ciba Specialty Chemicals Holding Inc. | A composition for whitening paper |
US20070277950A1 (en) * | 2006-06-01 | 2007-12-06 | Skaggs Benny J | Surface treatment of substrate or paper/paperboard products using optical brightening agent |
US20080066878A1 (en) * | 2006-06-02 | 2008-03-20 | Nguyen Xuan T | Process for manufacturing pulp, paper and paperboard products |
WO2009118247A1 (en) | 2008-03-26 | 2009-10-01 | Clariant International Ltd | Improved optical brightening compositions |
JP2011515597A (ja) | 2008-03-26 | 2011-05-19 | クラリアント・ファイナンス・(ビーブイアイ)・リミテッド | 改善された光学的増白組成物 |
US20110146929A1 (en) | 2008-03-26 | 2011-06-23 | Clariant Finance (Bvi) Limited | Optical Brightening Compositions |
Non-Patent Citations (7)
Title |
---|
"Water to Zirconium, and Zirconium, Compounds," Ullmann's Encyclopedia of Industrial Chemistry, Sixth Edition, vol. 39, 2003. |
Clariant, Fiche de donnèes de sécuritéconforme au Règlement (CE) N° 1907/2006, Leucophor AF liq (Safety Sheet for Leuocophor AF liq), Jan. 8, 2009. |
English Abstract for JP 62106965, May 18, 1987. |
Klaus Hunger (Editor), Industrial Dyes: Chemistry, Properties, Applications (2003), pp. 593-596, Wiley-VCH, Germany. |
Martinez, et al., "Effect of optical brighteners on the insecticidal activity of a nucleopolyhedrovirus in three instars of Spodoptera frugiperda," (2003) The Netherlands Entomological Society, Entomologia Experimentalis et Applicata, vol. 109: 139-146. |
PCT International Search Report for PCT/EP2009/052919, dated Jul. 27, 2009. |
PCT International Search Report for PCT/EP2009/052919, mailed Jul. 24, 2009. |
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