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1. ZA1998/07756 - VARNISH COMPOSITIONS METHODS OF MAKING AND COMPONENTS MADE THEREFROM

Office
Afrique du Sud
Numéro de la demande 1998/07756
Date de la demande 26.08.1998
Numéro de publication 1998/07756
Date de publication 28.07.1999
Type de publication B
CIB
C08F
CCHIMIE; MÉTALLURGIE
08COMPOSÉS MACROMOLÉCULAIRES ORGANIQUES; LEUR PRÉPARATION OU LEUR MISE EN UVRE CHIMIQUE; COMPOSITIONS À BASE DE COMPOSÉS MACROMOLÉCULAIRES
FCOMPOSÉS MACROMOLÉCULAIRES OBTENUS PAR DES RÉACTIONS FAISANT INTERVENIR UNIQUEMENT DES LIAISONS NON SATURÉES CARBONE-CARBONE
H01H
HÉLECTRICITÉ
01ÉLÉMENTS ÉLECTRIQUES FONDAMENTAUX
HINTERRUPTEURS ÉLECTRIQUES; RELAIS; SÉLECTEURS; DISPOSITIFS DE PROTECTION
C09D
CCHIMIE; MÉTALLURGIE
09COLORANTS; PEINTURES; PRODUITS À POLIR; RÉSINES NATURELLES; ADHÉSIFS; COMPOSITIONS NON PRÉVUES AILLEURS; UTILISATIONS DE SUBSTANCES, NON PRÉVUES AILLEURS
DCOMPOSITIONS DE REVÊTEMENT, p.ex. PEINTURES, VERNIS OU VERNIS-LAQUES; APPRÊTS EN PÂTE; PRODUITS CHIMIQUES POUR ENLEVER LA PEINTURE OU L'ENCRE; ENCRES; CORRECTEURS LIQUIDES; COLORANTS POUR BOIS; PRODUITS SOLIDES OU PÂTEUX POUR COLORIAGE OU IMPRESSION; EMPLOI DE MATÉRIAUX À CET EFFET
CPC
C08G 59/42
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
59Polycondensates containing more than one epoxy group per molecule
18Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; ; e.g. general methods of curing
40characterised by the curing agents used
42Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
C08G 59/4215
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
59Polycondensates containing more than one epoxy group per molecule
18Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; ; e.g. general methods of curing
40characterised by the curing agents used
42Polycarboxylic acids; Anhydrides, halides or low molecular weight esters thereof
4215cycloaliphatic
C08G 63/553
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
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
02Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
12derived from polycarboxylic acids and polyhydroxy compounds
52Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
54the acids or hydroxy compounds containing carbocyclic rings
553Acids or hydroxy compounds containing cycloaliphatic rings, e.g. Diels-Alder adducts
Déposants RANBAR ELECTRICAL MATERIALS INC
Inventeurs ALBERT CHRIS FAZIO
Mandataires HAHN $ HAHN INC
Données relatives à la priorité 60/057.565 26.08.1997 US
Titre
(EN) VARNISH COMPOSITIONS METHODS OF MAKING AND COMPONENTS MADE THEREFROM
Abrégé
(EN) Apparatuses and methods are disclosed for the production of a polyester/epoxy copolymer that can be applied as a liquid to a surface prior to being cured. The method of preparing the polyester/epoxy copolymer includes mixing maleic acid with dicyclopentadiene to produce a ten-carbon double ring ester, promoting esterification with the addition of a source of hydroxyl, such as an alcohol or a glycol, to a desired acid number and reacting with an epoxy. Optionally, a source of unsaturation may also be added. Examples include excess maleic anhydride, fumaric acid, excess ten carbon ester, nadic anhydride, or tetrahydrophthalic acid.
Electrical components of the present invention include a cured coating of the copolymer of the present invention over at least a portion of the component. Specific, selective modifications to 100% reactive polyester/epoxy copolymer electrical varnishes can result in greatly improved moisture and chemical resistance properties.