Abstract: Cationic resins based on epoxy resins which are modified through the introduction of phosphoric acid segments and the process of producing the resins are described. The reaction of the phosphoric acid is carried out in a multiple-step process whereby, in a first step, the diester is formed through reaction of ortho-phosphoric acid with 2 moles of a monoepoxy compound or through reaction of a polyphosphoric acid with n-1 moles of a monoalcohol and subsequent reaction with n+1 moles of a monoepoxy compound. The remaining acid group is reacted with a di- or polyepoxy resin. The products obtained can still contain unreacted epoxy groups. The protonable groups are introduced via the epoxy groups and/or via the hydroxy groups present or set free by opening of the oxirane ring. The binders can be combined with hardening components or may be formulated as self-crosslinking binders. The binders have excellent resistance to corrosion when stoved as electrodeposited coatings.

Abstract: Crosslinking cationic paint binders, preferably cathodically depositable paint binders comprising (poly)-2-hydroxyalkylurea compounds as a crosslinking agent are described. The 2-hydroxyalkylureas are obtained by reacting organic polyisocyanates with secondary beta-hydroxyalkylamines. The crosslinking agents of the invention permit film formation in the stoving range of about 140.degree. C., which is particularly favorable for water-based paints. Additionally, selective semi-blocking which is made possible through the difference in reactively between the NCO-groups of individual polyisocyanates is enhanced through use of the secondary amino groups, in comparison to through use of hydroxyl groups which are conventionally used.

Abstract: Cathodically depositable electrodeposition paints contain binder combinations of cationic film-forming resins with organic titanium compounds which are obtained by reacting tetraalkyl orthotitanates or titanium acetyl acetonates with NH-functional .beta.-hydroxyalkylamine compounds, subsequently reacting with formaldehyde and with removal of the alcohol and/or acetyl acetone formed. The stoved paint films exhibit an excellent anti-corrosion effect on non-pretreated sheet steel.

Abstract: Preparation of pigment paste resins for cathodically depositable coating compositions based on epoxy resin-amine adducts obtained from unmodified or modified epoxy resins, which by partial or complete reaction of secondary amino groups with formaldehyde contain oxazolidine structures; whose tertiary amino groups introduced via primary-tertiary diamines are quaternized to at least 20 mol % using an organic acid and a monoglycidyl compound and which in a solution adjusted with water to a correct application viscosity contain a total of 80 to 100 millimoles of acid per 100 g of solid resin are described. The pigment pastes possess, both in concentrated and dilute form, a stability which meets practical requirements and, because of their rheology, are readily processed to ensure formation of defect-free films both during deposition and crosslinking by stoving. The applied films have good properties.

Abstract: Cathodically depositable electrodeposition paints contain binder combinations of cationic film-forming resins with organic titanium compounds which are obtained by reacting tetraalkyl orthotitanates or titanium acetyl acetonates with compounds containing at least one phenolic hydroxyl group. The stoved paint films exhibit an excellent anticorrosion effect on non-pretreated sheet steel.

Abstract: Cationic paint binders based on polyether urethanes are formed by selective reaction of one NCO-group of a diisocyanate which contains NCO-groups of different reactivities with the primary hydroxyl groups of a polyhydroxypolyether in the presence of 1,4-diazabicyclo-2,2,2-octane (DABCO) as catalyst, and subsequently reacting the remaining NCO-group of the diisocyanate with a secondary amine. The binders which are largely free of low molecular basic by-products are used for formulating paints, particularly cathodically depositable electrodeposition paints, which are water-dilutable after protonation.

Abstract: Self-crosslinking cationic paint binders in which the crosslinking is effected through the reaction of methane-carboxylic acid dialkylester monoamide structures with free hydroxyl or amino groups on the resin are described. The crosslinking functionality is provided by reaction of a polyisocyanate with a corresponding quantity of a CH-active alkyl ester. The alkyl ester is preferably a malonic acid dimethylester or malonic acid diethylester.

Abstract: Crosslinking components for cationic paint binders wherein substituted ureas obtained by reacting beta-hydroxyamines with isocyanate compounds are converted into biuret compounds by further reaction with isocyanates. The cross-linking components thus obtained, when combined with base resins containing hydroxyl groups and/or primary or secondary amino groups, yield films having an increased hardening capacity and greater resistance to stone chipping.

Abstract: Water-dilutable paint binders for the formulation of ecological stoving paints containing only minor quantities of organic solvents are described. The binders are partial condensation products of (A) a polycondensation, polymerization, or polyaddition resin as the film-forming polycarboxy compound (PC-component), and (B) an epoxy resin amine adduct (PH-component) carrying hydroxy groups and being water-insoluble under normal processing conditions. The products afford improved corrosion resistance and are particularly suited for the formulation of primers, intercoats (primer surfacers), and single coat paints.

Abstract: Cationic paint binders obtained through reaction of substituted ureas with formaldehyde and phenols are described. The substituted ureas are obtained through reaction of an isocyanate compound carrying at least one free, and optionally also blocked, NCO-group with equivalent quantities of a secondary non-aromatic amine. After partial protonation, the binders are used in water-dilutable paints, particularly in cathodically depositable electrodeposition paints.

Abstract: Self-crosslinking cationic paint binders based on ureide-modified epoxy resins; the preparation of these binders and their use, particularly in electrodeposition paints, is described. The modification is effected with carboxylic compounds carrying ureide groups, blocked isocyanate groups and, optionally, tertiary amino groups. The carboxylic compounds are obtained through reaction of dicarboxylic acid anhydrides or compounds carrying dicarboxylic acid anhydrides with a substituted urea or a substituted biuret. The products show excellent resistance and adhesion characteristics.

Abstract: Water-dilutable paint binders based on acrylates for cathodically depositable paints particularly suited for the formulation of decorative single coats or pale primers are described. The binders are partial condensation products of from 60% to 90% by weight of a hydroxy and amino group containing acrylic copolymer, the basic groups of which were obtained through reaction of glycidyl groups with secondary amines, with 10% to 40% by weight of an oliogomeric or polymeric compound carrying CH-active ester groups, preferably malonic acid ester groups, capable of transesterification or transamidation. The paint films afford particularly good yellowing resistance, detergent resistance, and abrasion resistance.

Abstract: A process for producing self-crosslinking cationic paint binders, water-dilutable upon protonation, on the basis of urea and urethane group carrying reaction products of modified phenols and monoepoxy compounds as well as with the binders produced according to this process and their use in stoving paints, particularly electrodeposition paints are described. The process is characterized in that a substituted urea-phenol-formaldehyde condensate obtained through reaction of an aminoalkylation product of a phenol, carrying an average of at least one secondary amino group with a semi-blocked diisocyanate, or a substituted urea prepared from a semi-blocked diisocyanate and an amine and further reacted with formaldehyde and a phenol, is reacted with a monoepoxy compound, the free aliphatic hydroxy groups of the reaction product being reacted in a further reaction step with di- or polyisocyanates. The paints formulated with these products, at stoving temperatures of from 150.degree. to 170.degree. C.

Abstract: A process for producing self-crosslinking cationic paint binders, water-dilutable upon protonation, on the basis of urea group carrying reaction products of modified phenols and epoxy resins as well as with the binders produced according to the process and their use in stoving paints, particularly in electrodeposition paints is described. The process is characterized in that either an aminoalkylation product of a phenol and a semi-blocked diisocyanate carrying an average of at least one secondary amino group, or a substituted urea prepared from a semi-blocked diisocyanate and an amine, which is further reacted with formaldehyde and a phenol, are reacted with an epoxy compound. The paints formulated with these products, at stoving temperatures of from 150.degree. to 170.degree. C., give films with excellent corrosion resistance and adhesion.

Abstract: Cationic paint binders, water-dilutable upon protonation, which crosslink internally at elevated temperatures are obtained through reaction of beta-hydroxyamines of the general formula- ##STR1## wherein R.sub.1 is a (cyclo)alkyl radical and/or a hydroxyalkyl radical and/or a tertiary amino(cyclo)alkyl radical, or optionally a radical resulting from the reaction of glycidyl groups with a primary-secondary amine or a diprimary amine and R.sub.2 is an aliphatic and/or aromatic radical of a polyepoxy compound, with partially blocked polyisocyanates and subsequent reaction with formaldehyde. In addition to having excellent film properties, the products show particularly favorable characteristics for processing, since they do not exhibit the thixotropy effects normal with such systems. The products are particularly suited for the formulation of cathodically depositable electrodeposition paints.

Abstract: Self-crosslinking paint binders, water-soluble upon protonation, containing biuret groups are described based on reaction products of blocked isocyanate groups containing aminoalkylation products of phenols with 0.1 to 1.0 moles, calculated on the hydrogen atoms at the urea groupings, of a semi-blocked diisocyanate. Optionally the phenolic hydroxy groups can be totally or partially reacted with epoxy compounds. The products are particularly suited for the formulation of high-grade, corrosion-resistant electrodeposition paints.

Abstract: Self-crosslinking paint binders, particularly for the formulation of water-dilutable, cathodically depositable paints (CED-paints), are obtained through reaction of formaldehyde with the reaction product of aminoalkylation products of phenols carrying at least one NH-group and semi-blocked diisocyanates and their subsequent reaction with epoxy compounds. The binders, when cathodically deposited, cure rapidly at low stoving temperatures to provide hard, solvent-resistant coatings.

Abstract: Cationic paint binders, particularly binders of the type used in cathodic electrodeposition coatings which crosslink through transesterification, transamidation, transurethanization, or through the reaction of chain end double bonds catalyzed with a condensation product of a dialkyltinoxide and a compound carrying at least one hydroxyl group are described. The hydroxyl compounds are the aliphatic alcohols, phenols, alkanolamines, or the reaction products of primary amines with monoepoxy compounds. The catalysts of the invention provide very good stability and good compatibility in aqueous cationic paint materials.

Abstract: Cationic paint binders, particularly binders of the type used in cathodic electrodeposition coatings which crosslink through transesterification, transamidation, transurethanization, or through the reaction of chain end double bonds catalyzed with a reaction product of lead(II) oxide with compounds carrying .beta.-hydroxyamino structure are described. The catalysts of the invention provide very good stability and good compatibility in aqueous cationic paint materials.

Abstract: A process for producing self-crosslinking paint binders, water-soluble on protonation, based on the reaction product of aminoalkylation product carrying blocked isocyanate groups, NH-functional compounds, particularly of adducts of primary amines to diepoxy resins, and formaldehyde is described. The products produced according to the process are particularly suited for the formulation of high quality electrodeposition paints.