Agents preventing ageing of paper

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CPC
D21H21/143

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DTEXTILES PAPER D21Papermaking D21HPULP 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 D21H21/00Non-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

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D21H21/143Agents preventing ageing of paper

Industries

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Patents Grantslast 30 patents

Information Patent Grant
Flame retardant paper
- Patent number 11,390,998
- Issue date Jul 19, 2022
- Toray Industries, Inc.
- Hideaki Karasaki
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
UV blocking film and composition comprising microfibrillated cellul...
- Patent number 10,752,741
- Issue date Aug 25, 2020
- Stora Enso, OYJ
- Isto Heiskanen
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Processes and compositions for brightness improvement in paper prod...
- Patent number 9,932,709
- Issue date Apr 3, 2018
- Ecolab USA Inc.
- Prasad Y. Duggirala
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Chlorohydrin and cationic compounds having high affinity for pulp o...
- Patent number 7,776,182
- Issue date Aug 17, 2010
- Ciba Specialty Chemicals Corporation
- Glen T. Cunkle
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Light stabilizer emulsion composition
- Patent number 7,671,096
- Issue date Mar 2, 2010
- Adeka Corporation
- Masaki Hosaka
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Chlorohydrin and cationic compounds having high affinity for pulp o...
- Patent number 7,312,332
- Issue date Dec 25, 2007
- Ciba Specialty Chemicals Corporation
- Glen T. Cunkle
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Method for reducing alkaline darkening of mechanical pulp containin...
- Patent number 6,998,015
- Issue date Feb 14, 2006
- Pulp and Paper Research Institute of Canada
- Xujun Hua
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Chlorohydrin and cationic compounds having high affinity for pulp o...
- Patent number 6,989,449
- Issue date Jan 24, 2006
- Ciba Specialty Chemicals Corporation
- Glen T. Cunkle
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Inhibition of pulp and paper yellowing using hydroxylamines and oth...
- Patent number 6,599,326
- Issue date Jul 29, 2003
- Ciba Specialty Chemicals Corporation
- Raymond Seltzer
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method of enhancing brightness and brightness stability of paper ma...
- Patent number 6,527,914
- Issue date Mar 4, 2003
- Ondeo Nalco Company
- Sergey M. Shevchenko
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Inhibition of pulp and paper yellowing using nitroxides, hydroxylam...
- Patent number 6,500,303
- Issue date Dec 31, 2002
- Ciba Specialty Chemicals Corporation
- Raymond R. Seltzer
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Inhibition of pulp and paper yellowing using nitroxides, hydroxylam...
- Patent number 6,447,644
- Issue date Sep 10, 2002
- Ciba Specialty Chemicals Corporation
- Raymond R. Seltzer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Polymeric stabilizers with high affinity to pulp
- Patent number 6,416,627
- Issue date Jul 9, 2002
- Ciba Specialty Chemicals Corporation
- Glen T. Cunkle
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Cross linked polyamide-ephalohydrin creping additives
- Patent number 6,336,995
- Issue date Jan 8, 2002
- Vulcan Materials, Inc.
- Clayton J. Campbell
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process for production of paper using thioether compounds
- Patent number 6,267,844
- Issue date Jul 31, 2001
- Clariant Finance (BVI) Limited
- Andrew Clive Jackson
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Inhibition of pulp and paper yellowing using nitroxides, hydroxylam...
- Patent number 6,254,724
- Issue date Jul 3, 2001
- Ciba Specialty Chemicals Corporation
- Raymond R. Seltzer
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Preparation of brightness stabilization agent for lignin containing...
- Patent number 6,193,837
- Issue date Feb 27, 2001
- Midwest Research Institute
- Foster A. Agblevor
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for increasing brightness in pulp paper and polymeric materials
- Patent number 6,030,495
- Issue date Feb 29, 2000
- Queens's University at Kingston
- Jeffrey K. S. Wan
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Inhibition of photo-yellowing in paper
- Patent number 5,928,473
- Issue date Jul 27, 1999
- University of Ottawa
- David Victor Avila
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for preventing yellowing of lignocellulosic products
- Patent number 5,658,431
- Issue date Aug 19, 1997
- Oy Keskuslaboratorio - Centrallaboratorium Ab
- Jan Janson
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Paper and a method of paper manufacture
- Patent number 5,368,689
- Issue date Nov 29, 1994
- Mo och Domsjo Aktiebolag
- Arne R. Agnemo
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method for preventing the discoloration of paper and paper treated...
- Patent number 5,181,988
- Issue date Jan 26, 1993
- Asahi Denka Kogyo Kabushiki Kaisha
- Mitsuo Akutsu
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
3270016
- Patent number 3,270,016
- Issue date Aug 30, 1966
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
3259627
- Patent number 3,259,627
- Issue date Jul 5, 1966
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
3256238
- Patent number 3,256,238
- Issue date Jun 14, 1966
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
3033720
- Patent number 3,033,720
- Issue date May 8, 1962
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
2965578
- Patent number 2,965,578
- Issue date Dec 20, 1960
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
2580461
- Patent number 2,580,461
- Issue date Jan 1, 1952
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
2222532
- Patent number 2,222,532
- Issue date Nov 19, 1940
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
2171427
- Patent number 2,171,427
- Issue date Aug 29, 1939
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL

Patents Applicationslast 30 patents

Information Patent Application
DECORATIVE PANEL AND A DECORATIVE FOIL FOR A DECORATIVE PANEL
- Publication number 20240240405
- Publication date Jul 18, 2024
- UNILIN, BV
- Benjamin CLEMENT
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Platelike thermal insulation material made from recycled and enviro...
- Publication number 20220136176
- Publication date May 5, 2022
- BALTICFLOC, SIA
- Edzus Cabulis
- E04 - BUILDING
Information Patent Application
FLAME RETARDANT PAPER
- Publication number 20200399833
- Publication date Dec 24, 2020
- TORAY INDUSTRIES, INC.
- Hideaki Karasaki
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
PROCESSES AND COMPOSITIONS FOR BRIGHTNESS IMPROVEMENT IN PAPER PROD...
- Publication number 20140259458
- Publication date Sep 18, 2014
- Ecolab USA Inc.
- Prasad Y. Duggirala
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
METHOD FOR REDUCTION OF LIGHT-INDUCED YELLOWING OF LIGNIN-CONTAININ...
- Publication number 20110263836
- Publication date Oct 27, 2011
- KEMIRA OYJ
- Veli-Matti Vuorenpalo
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Chlorohydrin and cationic compounds having high affinity for pulp o...
- Publication number 20080060775
- Publication date Mar 13, 2008
- Glen T. Cunkle
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Uso of Cyclodextrin for Reducing Yellowing of Pulp and Paper
- Publication number 20080041541
- Publication date Feb 21, 2008
- Novozymes North America, Inc.
- Greg DeLozier
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Method for reducing brightness reversion of mechanical pulps and hi...
- Publication number 20070163735
- Publication date Jul 19, 2007
- KEMIRA OYJ
- Johanna Buchert
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Paper coating composition
- Publication number 20070128460
- Publication date Jun 7, 2007
- Gerald D. Miller
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Light stabilizer emulsion composition
- Publication number 20060183824
- Publication date Aug 17, 2006
- Masaki Hosaka
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Chlorohydrin and cationic compounds having high affinity for pulp o...
- Publication number 20050092452
- Publication date May 5, 2005
- Glen T. Cunkle
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
Process for producing a fade-resistant paper
- Publication number 20040244929
- Publication date Dec 9, 2004
- Jason D. Henke
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Inhibition of yellowing in papers
- Publication number 20030121630
- Publication date Jul 3, 2003
- Zhirun Yuan
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Process for stabilizing the whiteness of lignin-containing fibrous...
- Publication number 20020174491
- Publication date Nov 28, 2002
- Klaus Fischer
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Inhibition of pulp and paper yellowing using hydroxylamines and oth...
- Publication number 20020174964
- Publication date Nov 28, 2002
- Raymond Seltzer
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Inhibition of pulp and paper yellowing using nitroxides, hydroxylam...
- Publication number 20020124980
- Publication date Sep 12, 2002
- Raymond R. Seltzer
- C07 - ORGANIC CHEMISTRY
Information Patent Application
INHIBITION OF PULP AND PAPER YELLOWING USING HYDROXYLAMINES AND OTH...
- Publication number 20020088574
- Publication date Jul 11, 2002
- RAYMOND SELTZER
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Application
Method for reducing alkaline darkening of mechanical pulp containin...
- Publication number 20020059999
- Publication date May 23, 2002
- Xujun Hua
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Agents preventing ageing of paper

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Flame retardant paper

UV blocking film and composition comprising microfibrillated cellul...

Processes and compositions for brightness improvement in paper prod...

Chlorohydrin and cationic compounds having high affinity for pulp o...

Light stabilizer emulsion composition

Chlorohydrin and cationic compounds having high affinity for pulp o...

Method for reducing alkaline darkening of mechanical pulp containin...

Chlorohydrin and cationic compounds having high affinity for pulp o...

Inhibition of pulp and paper yellowing using hydroxylamines and oth...

Method of enhancing brightness and brightness stability of paper ma...

Inhibition of pulp and paper yellowing using nitroxides, hydroxylam...

Inhibition of pulp and paper yellowing using nitroxides, hydroxylam...

Polymeric stabilizers with high affinity to pulp

Cross linked polyamide-ephalohydrin creping additives

Process for production of paper using thioether compounds

Inhibition of pulp and paper yellowing using nitroxides, hydroxylam...

Preparation of brightness stabilization agent for lignin containing...

Method for increasing brightness in pulp paper and polymeric materials

Inhibition of photo-yellowing in paper

Method for preventing yellowing of lignocellulosic products

Paper and a method of paper manufacture

Method for preventing the discoloration of paper and paper treated...

3270016

3259627

3256238

3033720

2965578

2580461

2222532

2171427

Patents Applicationslast 30 patents

DECORATIVE PANEL AND A DECORATIVE FOIL FOR A DECORATIVE PANEL

Platelike thermal insulation material made from recycled and enviro...

FLAME RETARDANT PAPER

PROCESSES AND COMPOSITIONS FOR BRIGHTNESS IMPROVEMENT IN PAPER PROD...

METHOD FOR REDUCTION OF LIGHT-INDUCED YELLOWING OF LIGNIN-CONTAININ...

Chlorohydrin and cationic compounds having high affinity for pulp o...

Uso of Cyclodextrin for Reducing Yellowing of Pulp and Paper

Method for reducing brightness reversion of mechanical pulps and hi...

Paper coating composition

Light stabilizer emulsion composition

Chlorohydrin and cationic compounds having high affinity for pulp o...

Process for producing a fade-resistant paper

Inhibition of yellowing in papers

Process for stabilizing the whiteness of lignin-containing fibrous...

Inhibition of pulp and paper yellowing using hydroxylamines and oth...

Inhibition of pulp and paper yellowing using nitroxides, hydroxylam...

INHIBITION OF PULP AND PAPER YELLOWING USING HYDROXYLAMINES AND OTH...

Method for reducing alkaline darkening of mechanical pulp containin...