摘要:
Aminoplast curable cationic coating compositions are disclosed. The coating compositions contain an onium salt group-containing polymer and an aminoplast curing agent which has at least one group of the structure: ##STR1## wherein R.sub.1 is carbon derived from an aldehyde or a ketone.
摘要:
Aminoplast curable cationic coating compositions are disclosed. The coating compositions contain an onium salt group-containing polymer and an aminoplast curing agent which has at least one group of the structure: ##STR1## wherein R.sub.1 is carbon derived from an aldehyde or a ketone.
摘要:
Resinous compositions which are the Michael adducts of primary and/or secondary amines and polymers containing alpha, beta-ethylenically unsaturated moieties in conjugation with carbonyl moieties are disclosed. The compositions are depositable on substrates to form films. The films are amenable to oxidative and aminoplast cures and cure with light color. The compositions are desirable for use in cationic electrodeposition.
摘要:
Polymeric products are prepared polymerizing in aqueous medium under addition polymerization conditions a dispersed phase of a polymerizable, ethylenically unsaturated monomer or mixture of polymerizable, ethylenically unsaturated monomers in the presence of a quaternary ammonium base group-containing polymer which is formed from reacting a polyepoxide with an unsaturated tertiary amine in the presence of a proton source. The polymeric products are useful in water-based coating compositions particularly for use in cationic electrodeposition.
摘要:
A method of providing improved corrosion resistance to coated metal substrates is disclosed. The process of the invention involves a passivating pretreatment with an onium salt before coating. The invention is particularly effective with ferrous metal substrates.
摘要:
Synthetic resins which are water-dispersible epoxy resins having epoxy groups, chemically-bound quaternary ammonium base salts, can be dissolved or dispersed in water to provide aqueous coating compositions. Such compositions, in which these resins are the major resinous component, can be applied by electrodeposition and deposit on the cathode to provide coatings of improved properties, including a high degree of resistance to corrosion or staining.
摘要:
Synthetic resins which are water-dispersible Zwitterion-containing resins and containing chemically-bound quaternary ammonium base groups can be dissolved or dispersed in water to provide aqueous coating compositions. Such compositions in which these resins are the major resinous component can be applied by electrodeposition and deposit on the cathode to provide coatings of improved properties including a high degree of resistance to corrosion or staining.
摘要:
It has been found that aqueous coating compositions comprising a blocked organic polyisocyanate and quaternary sulfonium group-containing resin containing isocyanate reactive groups can be electrodeposited. These compositions deposit on the cathode to provide coatings having excellent properties including solvent resistance, salt spray and detergent resistance, hardness, flexibility, and most importantly a resistance to yellowing, especially when used to formulate white or pastel coatings.
摘要:
Water-dispersible salt-containing containing quaternary ammonium salt groups are prepared by reacting a polyglycidyl ether of a polyphenol and an amine acid salt. When dispersed or dissolved in water, the quaternary ammonium salt-contaning resins can be applied to a wide variety of different substrates by electrodeposition, and will deposit on the cathode to provide coatings of unique properties.
摘要:
Electrodepositable coating compositions having improved appearance, detergent resistance, salt-spray resistance and other improved properties are provided by the combination of a vehicle resin which is a water-dispersible quaternary onium (e.g., ammonium, sulfonium, phosphonium) salt-containing resin in combination with either an amine-aldehyde condensation product or a methylol-phenol ether, or the combination of the two. These compositions electrodeposit on the cathode. The properties of the coatings obtained make them highly useful as industrial finishes, either as primers or as one-coat finishes.