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1. AU2003296670 - Direct synthesis method for the production of etherified melamine resin condensates, melamine resin condensates, and use thereof

Office
Australie
Numéro de la demande 2003296670
Date de la demande 18.12.2003
Numéro de publication 2003296670
Date de publication 06.05.2004
Type de publication B2
CIB
C08G 12/42
CCHIMIE; MÉTALLURGIE
08COMPOSÉS MACROMOLÉCULAIRES ORGANIQUES; LEUR PRÉPARATION OU LEUR MISE EN UVRE CHIMIQUE; COMPOSITIONS À BASE DE COMPOSÉS MACROMOLÉCULAIRES
GCOMPOSÉS MACROMOLÉCULAIRES OBTENUS PAR DES RÉACTIONS AUTRES QUE CELLES FAISANT INTERVENIR UNIQUEMENT DES LIAISONS NON SATURÉES CARBONE-CARBONE
12Polymères de condensation d'aldéhydes ou de cétones obtenus uniquement avec des composés contenant de l'hydrogène fixé sur de l'azote
02d'aldéhydes
40Polycondensats modifiés chimiquement
42par éthérification
CPC
C08G 12/427
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
12Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
02of aldehydes
40Chemically modified polycondensates
42by etherifying
424of polycondensates based on heterocyclic compounds
425based on triazines
427Melamine
Déposants AMI - Agrolinz Melamine International GmbH
Inventeurs Bucka, Hartmut
Pfeiffer, Steffen
Ratzsch, Manfred
Tappeiner, Gunter
Mandataires Spruson & Ferguson
Données relatives à la priorité 10261804 19.12.2002 DE
Titre
(EN) Direct synthesis method for the production of etherified melamine resin condensates, melamine resin condensates, and use thereof
Abrégé
(EN)
The invention relates to a direct synthesis method for producing etherified melamine resin condensates having average molar masses of 500 to 50,000. Said method is characterized by the fact that a) an etherified melamine resin precondensate is produced in an alcoholic solution in a first reaction step; b) the etherified melamine resin precondensate is concentrated in an alcoholic solution in at least one condensation step, C4 to C18 alcohols, diols of type HO-R-OH, and/or tetravalent alcohols that are based on erythritol being added to the melamine resin precondensate during and/or following the concentration process; c) the concentrated melamine resin precondensate is reacted by means of a mixer, especially a kneader, in a second reaction step. The inventive method allows melamine resin condensates having average molar masses of 500 to 50,000 to be produced, said melamine resin condensates being free of hydroxymethyleneamino groups that are bonded to the triazine rings and -NH-CH2-O-CH2-NH- groups which link the triazine rings.

Également publié en tant que
NO20053456
US2006252909