PROCESS FOR MAKING CATIONIC HOLLOW PARTICLE LATEX AND A COMPOSITION OBTAINABLE THEREFROM USEFUL FOR COATING AND/OR IMPREGNATING

The invention relates to an improved process for preparation of cationic hollow polymer particle latexes having positive charge and high heat resistance and which are composed of a mixture of an anionic hollow particle latex and a melamine-formaldehyde resin having dry components in the weight range...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BYRDINA, NINA, PAVLYUCHENKO, VALERY, PRIMACHENKO, OLEG, SOROCHINSKAYA, OLGA, SKRIFVARS, MIKAEL, IVANCHEV, SERGEY
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY IMPREGNATING OR COATING OF PAPER PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS TEXTILES THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
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Beschreibung
Zusammenfassung:	The invention relates to an improved process for preparation of cationic hollow polymer particle latexes having positive charge and high heat resistance and which are composed of a mixture of an anionic hollow particle latex and a melamine-formaldehyde resin having dry components in the weight range of 0.05 to 0.70. Said latexes can be used as opacifying agents, fillers, binders and extenders in coating and impregnating applications, particularly in acid-catalyzed thermosetting coatings. They are also useful as multifunctional additives in pulp and paper industry. L'invention concerne un procédé amélioré de préparation de latex à polymère de particules creuses cationique possédant une charge positive et une résistance à la chaleur élevée et qui sont composés d'un mélange d'un latex à particules creuses anionique et d'une résine mélamine-formaldéhyde présentant des composants secs, dont le poids est compris entre 0,05 et 0,70. Lesdits latex peuvent servir de feuilles tripes d'agents d'opacification et d'allonges dans des applications de revêtement et d'imprégnation, en particulier pour des revêtements thermodurcissables catalysés par acide. Ils peuvent également servir en tant qu'additifs multifonctionnels dans l'industrie des pâtes et papiers.