Abstract:
Pigmented high solid coating compositions are produced with reduced viscosities by the addition of at least one silane and at least one titanate.
Abstract:
The invention relates to a self-crosslinking heat-curable binder, in particular for electrocoating finishes, based on an organic synthetic resin which contains primary and/or secondary hydroxyl groups, esterified carboxyl groups and quaternary ammonium groups and can be diluted with water as a result of partial or complete neutralization with acids. The esterified carboxyl groups are activated in the alcohol component by a substituent which has a negative inductive effect.
Abstract:
A heat-curable resin coating composition comprising as a resin binder a film-forming resin which contains at least two tertiary nitrogen atoms per molecule and may optionally contain primary or secondary amino groups, each of said tertiary nitrogen atoms having directly bonded thereto a functional group represented by the following formula ##STR1## wherein R.sub.1 represents a divalent saturated aliphatic hydrocarbon group having 1 to 18 carbon atoms which may be substituted by a hydroxyl group and/or may be interrupted by an ether linkage (--O--); R.sub.2 represents a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a part of the main chain of the resin; and R.sub.3 represents a hydrogen atom or a hydrocarbon group having 1 to 12 carbon atoms which may be substituted by a hydroxyl group and/or may be interrupted by an ether linkage, and each of said tertiary nitrogen atoms optionally forming a member of a nitrogen-containing heterocyclic ring formed together with R.sub.1 and R.sub.2 in the above formula and the nitrogen atom to which they are bonded.
Abstract:
A composition suitable for forming surface coatings, laminates or composite materials formed by bringing together:(a) a first polymer containing carboxylic acid, anhydride or acid chloride groups,(b) an amine or alcohol or a derivative thereof which is a tertiary amine, a ketimine, an acetal or an oxazolidine and(c) a second polymer capable of cross-linking with the first polymer in the presence of the amine or alcohol.The components may be initially in two packs and either mixed prior to application or sprayed onto the surface simultaneously from separate nozzles.The surface coatings are particularly suitable for coating surfaces which are otherwise difficult to coat and protect and may be applied to wet or rusted surfaces without surface preparation.
Abstract:
Coating compositions comprising a polymeric polyol with a polyester crosslinking agent having at least two beta-alkoxyester 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:
An anticorrosive coating composition comprising (i) an aqueous medium, and dispersed therein, (ii) a water-soluble, film-forming and crosslinkable resin having a hydroxyl group and a proton-free onium salt radical and (iii) a chelate compound of titanium or zirconium.
Abstract:
The present invention relates to N-methylol amide-containing resinous compositions and the methods of preparing them. Aqueous dispersions of the instant resinous composition containing N-methylol amides in amounts sufficient to impart self-curing at comparatively low temperatures are disclosed. The aqueous dispersions of the instant resinous compositions are useful as coating compositions; they are particularly suited to electrodeposition.
Abstract:
A fast curing, high solids coating composition that is adapted for use as an automotive topcoat and 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 nonvolatile solids and, exclusive of pigments, solvents and other nonreactive components, consists essentially of:(A) a bifunctional copolymer bearing hydroxy functionality and 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.:(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 in 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:
A method of manufacturing a mineral fibre thermal insulation product comprises the sequential steps of:
Forming mineral fibres from a molten mineral mixture; Spraying a substantially formaldehyde free binder solution on to the mineral fibres, the binder solution comprising: a reducing sugar, an acid precursor derivable from an inorganic salt and a source of nitrogen; Collecting the mineral fibres to which the binder solution has been applied to form a batt of mineral fibres; and Curing the batt comprising the mineral fibres and the binder which is in contact with the mineral fibres by passing the batt through a curing oven so as to provide a batt of mineral fibres held together by a substantially water insoluble cured binder.
Abstract:
A thermosetting coating composition includes a hydroxyl group-containing resin (A), a blocked polyisocyanate curing agent (B), and an amine compound (C) represented by the formula (1). In the formula (1), R1 to R5 each independently represents a hydrogen atom or an organic group having one or more carbon atoms. The organic group may contain one or more atoms selected from the group consisting of oxygen atoms, nitrogen atoms, sulfur atoms, and halogen atoms.