Abstract:
Provided are coating-forming coating compositions comprising the following components A and B, preferably further including the following component C and/or D, and having superior surface hardness, abrasion resistance, flexibility, dyeability and durability, as well as coatings formed by curing such coating compositions:A. A vinyl polymer having a group represented by the general formula R.sup.1.sub.m (R.sup.2 O).sub.3-m Si- wherein R.sup.1 is methyl or ethyl, R.sup.2 is an alkyl, alkoxyalkyl or acyl group having not more than 4 carbon atoms, with silicon being attached to the polymer by Si-C bond, and m is 0, 1 or 2.B. Fine particles of silica having an average diameter of particles in the range of about 1 to about 200 nm.C. A curing catalyst.D. At least one compound selected from the group consisting of acrylic resins, polyester resins, alkyd resins, epoxy resins, cellulose resins, amino resins and silicon compounds represented by the general formula R.sup.5.sub.a R.sup.6.sub.b Si(OR.sup.7).sub.4-(a+b) wherein R.sup.5 and R.sup.6 are each an alkyl, alkenyl, aryl, halogenated alkyl or alkenyl group having 1 to 10 carbon atoms or an epoxy, (meth)acryloxy or cyano group, bonded to silicon by Si-C bond, R.sup.7 is an alkyl, alkoxyalkyl or acyl group having 1 to 8 carbon atoms, a and b are each 0, 1 or 2 provided a+b equals 0, 1 or 2.
Abstract:
A self-curable coating composition for cathode-precipitating electrodeposition is disclosed which essentially comprises a water-dispersible resin having a carbon-carbon double bond and a tertiary amino group and an epoxy resin having a teritary amino group and an unsaturated group of the formula ##STR1## The two resins are neutralized by an acid to render the composition water-soluble or water-dispersible.
Abstract:
Amino-formaldehyde products with activated carboxylic ester groups cross-link compounds containing pendant primary or secondary amine groups.
Abstract:
The invention relates to a self-cross-linking, thermosetting, aqueous lacquer coating material, which comprises synthetic resins having a mean molecular weight (M.sub.n) of about 500 to 15,000 and containing primary and/or secondary--and if appropriate also tertiary--amino groups as well as terminal esterified carboxyl groups, having an amine number of about 20 to 180 and an ester number of about 20 to 350, and which becomes dilutable with water through protonization with acids.The invention moreover concerns the utilization of this lacquer coating material for the purposes of cathodic deposition upon electrically conducting surfaces.
Abstract:
The invention concerns a pre-condensed, thermosetting aqueous lacquer coating material containing a pre-condensation product that becomes water-dilutable after protonization with acids and has a mean molecular weight [M.sub.n ] of 800 to 15,000, obtainable by heating of 55 to 95% by weight, based on the total quantity of the binding agent, of an organic synthetic-resin binder containing primary and/or secondary amino groups which has an amine number of 30 to 150 and 5 to 45% by weight of a crosslinking agent possessing esterified terminal carboxyl groups.The invention moreover concerns the application of this lacquer coating material for cathodic deposition upon electrically conducting surfaces.
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:
There are disclosed radiation curable compositions containing (a) about 5-95% by weight of at least one .beta.-cyanoethoxyalkyl acrylate, (b) about 1-90% by weight of a photopolymerizable acrylated polymer or oil, and (c) from 0 to about 5% by weight of a photoinitiator. The compositions are useful in providing 100% solids coatings and adhesive compositions which are capable upon exposure to radiation, and which are useful in a variety of applications such as for coating textiles and fabrics, for producing pressure sensitive adhesives, and for producing laminating adhesives.
Abstract:
Nonionically/cationically stabilized aqueous emulsions of paint binders for use in stoving coating compositions and a process of producing such emulsions is described. The nonionic and cationic stabilization of the emulsion is accomplished by the inclusion in the binders of from about 1 - 20 percent by weight of nonionic structural units of the formula--O--[CH.sub.2 -- CH.sub.2 -- O].sub.n.sup.--n being an integer of from about 5 - 100, and 0.05 - 3 moles/kg of oxazoline structural units of the formula ##STR1## Coating compositions using the emulsion when applied to a surface as a film and thermally cured possess improved properties.
Abstract:
A polymeric finely-divided powder coating composition comprising a homogeneous blend of certain quantities of a solid polymeric material having a comparatively low molecular weight and containing certain reactive groups blended with certain quantities of tetrakismethoxymethylglycoluril.
Abstract:
A heat-curable coating composition contains a polymer having pendant amine groups and a bis-maleimide cross-linking agent in aqueous dispersion. The amine groups of the polymer are protonated to render the polymer water dispersible. The amine groups are adapted to become de-protonated for cross-linking with the bis-maleimide under heating to form a fully cured film. In a preferred embodiment, the coating composition serves as a cathodic electrocoating composition.