Abstract:
Coating compositions comprising a polymeric polyol with a polyester crosslinking agent having at least two beta- and/or gamma-ester ester groups per molecule are disclosed. The compositions, when applied to a substrate and cured in the presence of a transesterification catalyst, give solvent-resistant coatings.
Abstract:
Coating compositions comprising a polymeric polyol with a polyester crosslinking agent having at least two beta-amido ester groups per molecule are disclosed. The compositions, when applied to a substrate and cured in the presence of a transesterification catalyst, give solvent-resistant coatings.
Abstract:
The present invention is directed to thermosetting binder compositions for coating, comprising:(I) (1) A non-acidic resinous compound, saturated, molecular weight at least 900, alcoholic hydroxyl content at least 0.2 eq/100 g;(2) a cross-linking agent comprising a non-acidic polyester of a polycarboxylic acid, having more than one beta-hydroxyl ester group per molecule, at least one of components (1) and (2) having an alcoholic hydroxyl functionality of more than 2, and(II) a curing catalyst comprising a transesterification-promoting metal compound which is insoluble in liquid hydrocarbons.These compositions can be used in solvent-based lacquers and paints, in coating powders, aqueous powder suspensions, in aqueous coating compositions for cathodic electrodeposition; for aqueous compositions component (I) (1) is preferably an epoxy resin/amine adduct.
Abstract:
An improved thermosetting coating composition of the type comprising a film forming component and an amine aldehyde compound, wherein the composition cures by reaction between the amine aldehyde compound and hydroxy functionality present on the film forming material. The improvement comprises including in the composition a catalyst comprising at least one hydroxy functional organophosphate ester selected from certain mono- and diesters of phosphoric acid.
Abstract:
A fast curing, high solids coating composition adapted for use as an automotive topcoat, which upon curing forms a hard, glossy, durable coating exhibiting excellent resistance to solvents and water. The coating composition contains greater than about 60 percent by weight of non-volatile solids and, exclusive of pigments, solvents and other nonreactive components, consists essentially of:(A) a copolymer bearing pendant epoxy functionality, having a number average molecular weight (M.sub.n) of between about 1500 and about 10,000 and a glass transition temperature (Tg) of between about -25.degree. and about 70.degree. C.;(B) a reactive catalyst comprising at least one hydroxy functional organophosphate ester selected from certain mono- and diesters of phosphoric acid;(C) an amine-aldehyde crosslinking agent; and(D) optionally, a hydroxy functional additive.The hydroxy functional organophosphate ester is included in the composition in an amount sufficient to provide between about 0.67 and about 1.4 equivalents of acid functionality for each equivalent of pendant epoxy functionality of copolymer (A), and the amino crosslinking agent is included in the composition in an amount sufficient to provide at least about 0.4 equivalents of nitrogen crosslinking functionality for each equivalent of hydroxy functionality included in the composition.
Abstract:
High solids, aqueous solvent-thinnable compositions are prepared by combining relatively low molecular weight, hydroxyl-containing organic materials with aminoplast resins. In general, the hydroxyl-containing materials are characterized by a room temperature water thinnability of 3 or more parts of water per 100 parts of organic material. The compositions can be used in a wide variety of different applications, and find particular utility in the formulation of unique coating compositions.
Abstract:
A CATALYST THERMOSETTING COMPOSITION, USEFUL FOR COATINGS AND INKS, CONSISTING OF ONE OR MORE ACID-CURABLE RESINS AND AS A LATENT CATALYST COMPOSITION THEREFOR AN AMINO ALKANEDIOL HYDROCHLORIDE AND AN ALKANOLAMINE DISSOLVED IN A LOWER ALKANOL OR ETHERALKANOL. THE COMPOSITION HAS GOOD SHELF LIFE AND IS NON-CORROSIVE TO CONTAINERS. PREFERRED CATALYST COMPOSITIONS CONSIST OF 2-AMINO-2-ETHYL-1. 3-PROPANEDIOL HYDROCHLORIDE AND 2-AMINO-2-METHYL-1PROPANOL DISSOLVED IN ISOBUTYL ALCOHOL OR IN DIPROPYLENE GLYCOL MONOMETHYL ETHER.