Abstract:
Manufacture of heat-drying, water-dilutable paints on the basis of (a) epoxy resins with no amino groups, (b) of an aqueous dispersion or solution of saturated polyester resins or of their modification products in oil, (c) organic wetting agents and, where appropriate (d) pigments and/or the usual additives in specific quantity ratios, whereby these components are processed together in one or more stages reducing the size of the original particles to produce a homogeneous paint whose particle size is lower that 100 microns, and the use of the paints obtained in this way as a covering medium for coating, in particular of metallic substrates, by means of non-electric coating procedures or of electrostatic spraying.
Abstract:
HOE 84/F 129 of the disclosure: Process for the preparation of acylurethanes by reacting a urethane with compounds containing hydroxyl groups, which comprises reacting a hydroxy compound A) with a urethane B) in the form of an imide of the formula (I) to give an acylurethane containing at least one grouping of the formula -CO-R-CO-NH-COOR1 (II). In these formulae, R denotes the hydrocarbon radical of an optionally .alpha.,.beta.ethylenically unsaturated, aliphatic, cycloaliphatic or aromatic dicarboxylic acid or endomethylene derivatives thereof, and R1 denotes alkyl, alkoxy, alkoxyalkyl, cycloalkyl or benzyl. These acylurethanes are suitable for use as self-crosslinking curing agents or as curing agents for polyhydroxy compounds for the production of shaped articles and/or coatings.
Abstract:
A powder binder composition comprising a mixture of (I) an epoxy resin, (II) a hardener comprising a polyester having free carboxylic groups, and (III) from 0.05 to 5% by weight based on the weight of component II of an accelerator comprising at least one compound of the formulae (I) (II) (III) (IV) (V) (VI) wherein R represents a hydrogen atom or a C1-4 alkyl group, R1 represents a hydrogen atom or a nitro group, R2 represents a hydrogen atom or a C1-4 alkyl, C2-4 alkenyl group or a phenyl group, R3 represents a hydrogen atom or a C1-7 alkyl group, R4 represents a C1-12 alkyl group or a phenyl group, R5 represents a hydrogen atom or an aryl or C1-6 alkyl group, and X represents a hydrogen atom or a vinyl or C1-4 alkyl group and an article coated with said composition.
Abstract:
A b s t r a c t A powder binder composition comprising a mixture ofI) an epoxy resin, II) a hardener comprising a polyester having free carboxylic groups, and III) from 0.05 to 5% by weight based on the weight of component II of an accelerator comprising at least one compound of the formulae (I) (II) (III) (IV) (V) (VI) wherein R represents a hydrogen atom or a C1-4 alkyl group, R1 represents a hydrogen atom or a nitro group, R2 represents a hydrogen atom or a C1-4 alkyl, C2-4 alkenyl group or a phenyl group, R3 represents a hydrogen atom or a C1-7 alkyl group, R4 represents a C1-12 alkyl group or a phenyl group, R5 represents a hydrogen atom or an aryl or C1-6 alkyl group, and X represents a hydrogen atom or a vinyl or C1-4 alkyl group and an article coated with acid composition.
Abstract:
of the disclosure: Preparation of heat-curable, water-dilutable coating compositions based on A) epoxy resins free from amino groups, B) an aqueous dispersion or solution of saturated polyester resins or the modification products thereof with oils, C) organic cross-linking agents and optionally D) pigments and/or conventional adjuvants, in specific proportions, these components being processed together in one or more stages, whilst being comminuted from their original particle size, to form a homogeneous coating composition which has a particle size of less than 100 pm, and the use of the coating compositions thus obtained as coating agents, particularly for coating metal substrates, by the use of current-free mcthods of application or electrostatic spraying.
Abstract:
Preparation of heat-curable, water-dilutable coating compositions based on (A) epoxy resins free from amino groups, (B) an aqueous dispersion or solution of saturated polyester resins or the modification products thereof with oils, (C) organic cross-linking agents and optionally (D) pigments and/or conventional adjuvants, in specific proportions, these components being processed together in one or more stages, while being comminuted from their original particle size, to form a homogeneous coating composition which has a particle size of less than 100 mu m, and the use of the coating compositions thus obtained as coating agents, particularly for coating metal substrates, by the use of current-free methods of application or electrostatic spraying.