Electrocoat resin compositions containing carbamate functional resins having one or more quaternary ammonium groups and at least one carbamate functional reactive additive

The invention provides a resin composition comprising (A) a polymer comprising at least 1 primary carbamate functional group and 1 or more quaternary ammonium groups, and (B) a carbamate functional reactive additive that is generated in situ during the production of polymer (A). The invention also p...

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Bibliographic Details
Main Author DECEMBER TIMOTHY S
Format Patent
LanguageEnglish
Published 30.04.2002
Edition7
Subjects
ADHESIVES
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
COMPOSITIONS BASED THEREON
CORRECTING FLUIDS
DYES
FILLING PASTES
INKS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
ORGANIC MACROMOLECULAR COMPOUNDS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
POLISHES
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
USE OF MATERIALS THEREFOR
WOODSTAINS
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Summary:The invention provides a resin composition comprising (A) a polymer comprising at least 1 primary carbamate functional group and 1 or more quaternary ammonium groups, and (B) a carbamate functional reactive additive that is generated in situ during the production of polymer (A). The invention also provides a method of making an electrocoat resin composition comprising (A) and (B), the method comprising reacting a monomeric polyisocyanate and a compound having at least 1 group that is reactive with isocyanate and at least 1 carbamate group, to produce both (1) an intermediate product having at least 1 carbamate functional group and at least 1 isocyanate functional group, as well as (2) a carbamate functional reactive additive having no isocyanate functionality, reacting said intermediate product with a compound having at least 1 epoxy group and at least 1 isocyanate reactive group, said reaction occurring in the presence of the reactive additive to produce a carbamate functional resin having at least 1 epoxy group, reacting said at least 1 epoxy group with a tertiary amine in the presence of an acid to provide a carbamate functional resin having 1 or more quaternary ammonium groups, said reaction occurring in the presence of the reactive additive.
Bibliography:Application Number: US19990464431