Processing

Please wait...

Settings

Settings

1. WO1996005373 - IMPROVEMENTS IN OR RELATING TO APPLICATION OF MATERIAL TO A SUBSTRATE

Publication Number WO/1996/005373
Publication Date 22.02.1996
International Application No. PCT/GB1995/001935
International Filing Date 16.08.1995
Chapter 2 Demand Filed 06.03.1996
IPC
D21H 17/28 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20Macromolecular organic compounds
21of natural origin; Derivatives thereof
24Polysaccharides
28Starch
D21H 17/37 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20Macromolecular organic compounds
33Synthetic macromolecular compounds
34obtained by reactions only involving carbon-to-carbon unsaturated bonds
37Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
D21H 17/42 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20Macromolecular organic compounds
33Synthetic macromolecular compounds
34obtained by reactions only involving carbon-to-carbon unsaturated bonds
41containing ionic groups
42anionic
D21H 17/45 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20Macromolecular organic compounds
33Synthetic macromolecular compounds
34obtained by reactions only involving carbon-to-carbon unsaturated bonds
41containing ionic groups
44cationic
45Nitrogen-containing groups
D21H 23/10 2006.01
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
23Processes or apparatus for adding material to the pulp or to the paper
02characterised by the manner in which substances are added
04Addition to the pulp; After-treatment of added substances in the pulp
06Controlling the addition
08by measuring pulp properties, e.g. zeta potential or pH
10at least two kinds of compounds being added
CPC
D21H 17/28
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP 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
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20Macromolecular organic compounds
21of natural origin; Derivatives thereof
24Polysaccharides
28Starch
D21H 17/375
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP 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
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20Macromolecular organic compounds
33Synthetic macromolecular compounds
34obtained by reactions only involving carbon-to-carbon unsaturated bonds
37Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
375Poly(meth)acrylamide
D21H 17/42
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP 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
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20Macromolecular organic compounds
33Synthetic macromolecular compounds
34obtained by reactions only involving carbon-to-carbon unsaturated bonds
41containing ionic groups
42anionic
D21H 17/455
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP 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
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20Macromolecular organic compounds
33Synthetic macromolecular compounds
34obtained by reactions only involving carbon-to-carbon unsaturated bonds
41containing ionic groups
44cationic
45Nitrogen-containing groups
455comprising tertiary amine or being at least partially quaternised
D21H 23/10
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP 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
23Processes or apparatus for adding material to the pulp or to the paper
02characterised by the manner in which substances are added
04Addition to the pulp; After-treatment of added substances in the pulp
06Controlling the addition
08by measuring pulp properties, e.g. zeta potential, pH
10at least two kinds of compounds being added
Applicants
  • CHEMISOLV LIMITED [GB/GB]; Thornley House Carrington Business Park Carrington, Urmston Manchester M31 4DD, GB (AllExceptUS)
  • OWEN, David [GB/GB]; GB (UsOnly)
Inventors
  • OWEN, David; GB
Agents
  • THOMSON, Paul, Anthony; Potts, Kerr & Co. 15 Hamilton Square Birkenhead Merseyside L41 6BR, GB
Priority Data
9416520.616.08.1994GB
9419323.224.09.1994GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) IMPROVEMENTS IN OR RELATING TO APPLICATION OF MATERIAL TO A SUBSTRATE
(FR) AMELIORATIONS CONCERNANT L'APPLICATION DE MATERIAU SUR UN SUBSTRAT
Abstract
(EN)
The invention relates to a process of applying a polyhydroxy high molecular weight polymer or like material to a substrate, comprising adding to a solution of such material in anionic form a flocculent of oppositely charged form in order to insolubilise such material, and thereafter applying such insolubilised material to said substrate. The invention has particular application in respect of production of paper by adding to the slurry supplied in paper production of an anionic starch and a cationic flocculent in predetermined amounts. The cationic polymer is preferably added prior to addition of the anionic starch. The cationic polymer preferably has a molecular weight of 150,000 or more and the anionic starch is preferably added in an amount of from 75 % to 125 % of the reaction ratio amount. Preferably, the cationic polymer flocculent is added in an amount of 0.5 kg or more per 1,000 kg of paper substrate and the anionic starch showing an amount of 2 kg or more per 1,000 kg of paper substrate.
(FR)
Procédé d'application d'un polymère polyhydroxy de poids moléculaire élevé ou matériau analogue sur un substrat, qui consiste à ajouter à une solution dudit matériau se présentant sous forme anionique un floculant de forme à charge opposée afin d'insolubiliser ledit matériau, et à appliquer ce matériau insolubilisé sur ledit substrat. La présente invention concerne particulièrement la production de papier par ajout à la pâte liquide utilisée dans la production de papier d'un amidon anionique et d'un floculant cationique dans des quantités prédéterminées. Le polymère cationique est de préférence ajouté avant l'amidon anionique. Il a de préférence un poids moléculaire de 150.000 ou plus et l'amidon anionique est de préférence ajouté dans une quantité allant de 75 % à 125 % de la quantité du rapport de réaction. De préférence, le floculant polymère cationique est ajouté à raison de 0,5 kg ou plus par 1.000 kg de substrat papier et l'amidon anionique à raison de 2 kg ou plus par 1.000 kg de substrat papier.
Latest bibliographic data on file with the International Bureau