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1. (WO1991008235) PRODUCTION OF STABLE POLYMER DISPERSIONS USING AMPHOTERIC POLYMERS AS STABILIZERS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/008235 International Application No.: PCT/EP1990/001970
Publication Date: 13.06.1991 International Filing Date: 17.11.1990
Chapter 2 Demand Filed: 08.05.1991
IPC:
C08F 2/24 (2006.01) ,C08F 265/02 (2006.01) ,D21H 17/35 (2006.01) ,D21H 21/16 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2
Processes of polymerisation
12
Polymerisation in non-solvents
16
Aqueous medium
22
Emulsion polymerisation
24
with the aid of emulsifying agents
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
265
Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/181
02
on to polymers of acids, salts or anhydrides
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP 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
17
Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20
Macromolecular organic compounds
33
Synthetic macromolecular compounds
34
obtained by reactions only involving carbon-to-carbon unsaturated bonds
35
Polyalkenes, e.g. polystyrene
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
H
PULP 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
21
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
14
characterised by function or properties in or on the paper
16
Sizing or water-repelling agents
Applicants:
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN [DE/DE]; D-40191 Düsseldorf, DE (AllExceptUS)
FEUSTEL, Dieter [DE/DE]; DE (UsOnly)
FISCHER, Herbert [DE/DE]; DE (UsOnly)
SCHIEFERSTEIN, Ludwig [DE/DE]; DE (UsOnly)
STRITZKE, Karl-Heinz [DE/DE]; DE (UsOnly)
Inventors:
FEUSTEL, Dieter; DE
FISCHER, Herbert; DE
SCHIEFERSTEIN, Ludwig; DE
STRITZKE, Karl-Heinz; DE
Common
Representative:
HENKEL KOMMANDITGESELLSCHAFT AUF AKTIEN; TFP-Patentabteilung D-40191 Düsseldorf, DE
Priority Data:
P 39 39 034.925.11.1989DE
Title (DE) HERSTELLUNG STABILER POLYMERDISPERSIONEN MITTELS AMPHOTERER POLYMERER ALS STABILISATOREN
(EN) PRODUCTION OF STABLE POLYMER DISPERSIONS USING AMPHOTERIC POLYMERS AS STABILIZERS
(FR) PRODUCTION DE DISPERSIONS POLYMERES STABLES AVEC DES POLYMERES AMPHOTERES COMME STABILISANT
Abstract:
(DE) Beschrieben wird ein Verfahren zur Herstellung stabiler Polymerdispersionen durch radikalische Emulsionspolymerisation von vinylisch ungesättigten Monomeren in einem wäßrigen Medium in Gegenwart eines Katalysators sowie amphoterer Polymerer als Stabilisatoren . Zur Verbesserung der Wasserbeständigkeit und einer hohen Glanzwirkung der aus der Polymerdispersion herstellbaren Filme werden bei dem Verfahren amphotere Polymere als Stabilisatoren verwendet, die am isoelektrischen Punkt praktisch wasserunlöslich sind. Dervom isoelektrischen Punkt abweichende pH-Wert, bei dem die Emulsionspolymerisation durchgeführt wird, wird mittels flüchtiger und nichtflüchtiger Neutralisationsmittel eingestellt.
(EN) Process for producing stable polymer dispersions by radical emulsion polymerization of vinylically unsaturated monomers in an aqueous medium in the presence of a catalyst as well as amphoteric polymers as stabilizers. To ensure that the films made from the polymer dispersions possess improved water resistance and high gloss, the amphoteric polymers used as stabilizers are practically insoluble in water at the isoelectric point. The pH at which the emulsion polymerisation is carried out, which is different from the isoelectric point, is adjusted using volatile and non-volatile neutralization agents.
(FR) Selon un procédé de production de dispersions polymères stables, on provoque la polymérisation radicalaire par émulsion de monomères vinyliquement insaturés dans un milieu aqueux en présence d'un catalyseur et de polymères amphotères qui servent de stabilisants. Afin d'obtenir avec la dispersion polymère des films présentant une meilleure imperméabilité à l'eau et une forte brillance, on utilise comme stabilisant des polymères amphotères pratiquement insolubles dans l'eau à leur point isoélectrique. La polymérisation par émulsion est effectuée avec une valeur de pH qui diverge du point isoélectrique et qui est obtenue par adjonction de neutralisants volatils et non volatils.
Designated States: JP, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
EP0501980JPH05501575