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1. EP1303670 - USE OF STARCH DISPERSIONS AS BINDER IN COATING COMPOSITIONS AND PROCESS FOR PREPARING THE STARCH DISPERSIONS

Office
European Patent Office
Application Number 01965755
Application Date 24.07.2001
Publication Number 1303670
Publication Date 23.04.2003
Publication Kind B1
IPC
D21H 19/54
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
19Coated paper; Coating material
36Coatings with pigments
44characterised by the other ingredients, e.g. the binder or dispersing agent
54Starch
C08B 30/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
BPOLYSACCHARIDES; DERIVATIVES THEREOF
30Preparation of starch, degraded or non-chemically modified starch, amylose, or amylopectin
C08L 3/00
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
3Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
C08L 3/02
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
3Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
02Starch; Degradation products thereof, e.g. dextrin
C09D 103/04
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
103Coating compositions based on starch, amylose or amylopectin or on their derivatives or degradation products
04Starch derivatives
C09J 199/00
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
199Adhesives based on natural macromolecular compounds or on derivatives thereof, not provided for in groups C09J101/-C09J107/ or C09J189/-C09J197/214
CPC
C09D 103/04
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
103Coating compositions based on starch, amylose or amylopectin or on their derivatives or degradation products
04Starch derivatives
D21H 19/54
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
19Coated paper
36Coatings with pigments
44characterised by the other ingredients, e.g. the binder or dispersing agent
54Starch
Applicants ECOSYNTHETIX INC
Inventors HELBLING ANDRE MARCEL
HILLS MICHAEL ROBERT
STOLLMAIER FRIEDERIKE THERESIA
ANNEN THOMAS MARTIN STEPHAN
Priority Data 00115871 24.07.2000 EP
01965755 24.07.2001 EP
0100571 24.07.2001 NL
Title
(DE) VERWENDUNG VON STÄRKEDISPERSIONEN ALS BINDEMITTEL IN ÜBERZUGSZUSAMMENSETZUNGEN UND VERFAHREN ZUR HERSTELLUNG DER STÄRKEDISPERSION
(EN) USE OF STARCH DISPERSIONS AS BINDER IN COATING COMPOSITIONS AND PROCESS FOR PREPARING THE STARCH DISPERSIONS
(FR) UTILISATION DE DISPERSIONS D'AMIDON COMME LIANT DANS DES COMPOSITIONS D'ENDUCTION ET PROCEDE DE PREPARATION DE CES DISPERSIONS D'AMIDON
Abstract
(EN) The invention is directed to coating compositions comprising a pigment and starch dispersion of discrete crosslinked starch particles in an aqueous liquid. The dispersion may be used as coating color for paper. A preferred process of preparing said dispersion of starch particles comprises (a) obtaining a mixture of starch and an aqueous liquid; (b) processing the mixture using shear forces in the presence of a crosslinker in an extruder; and (c) injecting a hydroxylic liquid into the extruder and dispersing the mixture inside the extruder or outside the extruder or both inside and outside the extruder to obtain the dispersion.
(FR) Cette invention a trait à des compositions d'enduction renfermant un pigment et une dispersion d'amidon, faite de particules réticulées et séparées d'amidon dans un liquide aqueux. On peut utiliser cette dispersion comme sauce de couchage pour du papier. Un procédé préféré de préparation de ces dispersions de particules d'amidon consiste, (à ), à obtenir un mélange d'amidon et de liquide aqueux, (b), à traiter ce mélange an utilisant des forces de cisaillement en présence d'un agent de réticulation dans une extrudeuse et, (c), à injecter un liquide hydroxylique dans l'extrudeuse, puis à disperser le mélange à l'intérieur de l'extrudeuse ou à l'extérieur de celle-ci ou bien à l'intérieur ainsi qu'à l'extérieur de l'extrudeuse pour obtenir la dispersion.