Abstract:
Aqueous emulsions of binders for cathodically depositable aqueous coating compositions comprising emulsions of (A) 98 to 50 percent by weight of at least one water-soluble self-crosslinking cationic resin which is water-dilutable upon partial or total neutralization with an inorganic or organic acid and having at least 0.5 basic nitrogen atoms in 1000 molecular weight units and a double bond number of at least 0.5; and (B) 2 to 50 percent by weight of a water-insoluble self-crosslinking polycondensation resin or polymerization resin having a double bond number of at least 0.8. Optionally, the water-insoluble self-crosslinking resin can include basic character but insufficient to provide water solubility. The emulsions have excellent stability without use of other emulsifiers even in substantially diluted form usual for electrodeposition baths. The emulsions when used in coating compositions provide films which have good adhesion characteristics, cure at relatively low temperatures and relatively short curing times to provide films having excellent resistance to water, chemicals, and corrosion.
Abstract:
A coating composition capable of producing a coating film having excellent water-proof property, solvent-resistant property, chemical-resistant property, thermal stability and hardness, which comprises water, a water-soluble solvent and a water-soluble, thermosetting resin as essential, film-forming component, which resin is prepared by (A) adding an amine to 100 parts by weight of a copolymer obtained by the copolymerization of (1) 5 to 30 parts by weight of an .alpha.,.beta.-ethylenically unsaturated acid component, (2) 5 to 50 parts by weight of an addition product component containing hydroxyl group and a tertiary aliphatic group having 4 to 26 carbon atoms, (3) 40 to 90 parts by weight of a hydroxy-free, polymerizable, unsaturated monomer component and (4) up to 20 parts by weight of a polymerizable unsaturated monomer component having a hydroxyl group in its molecule, the amount of said amine being 0.5 to 2.0 equivalent with respect to the carboxyl group in said copolymer, to form a water-soluble salt; and (B) adding to said salt 4 to 50 parts by weight of a water-soluble amino resin. A process for preparing the coating composition and an article coated with the composition are provided.
Abstract:
Water-borne or aqueous coating compositions which are especially suitable for use as bondable base coats and size coats in three piece, tin-free steel beverage containers comprise blends of an aqueous dispersion of an amine solubilized interpolymer with aldehyde condensation resins. The interpolymer is prepared in the absence of mercaptans, external surfactants and external dispersion stabilizers and is formed from substituted carboxylic acid amide units; ethylenically unsaturated acid units; hardening units from monomers such as styrene, vinyl toluene or alkyl methacrylate having from 1 to 4 carbon atoms and flexibilizing units from certain alkyl acrylates or methacrylates. The interpolymers are solubilized by neutralizing or partially neutralizing the acid units of the interpolymer with monomeric amines. Aldehyde condensation resins, such as phenol aldehyde resins, aminoplast resins or mixtures thereof are especially desirable. These compositions provide three piece beverage containers with cured base coats and size coats which exhibit excellent adhesion to both the tin-free steel metal and the adhesive employed in forming the container. In addition, the cured base coats and size coats formed from these compositions do not impart undesirable turbidity or taste characteristics to beverages packaged therein.
Abstract:
Acrylamidoalkanesulfonic acids and their amine and ammonium salts are interpolymerized with other ethylenically unsaturated monomers including at least one such monomer which has at least one site for linking with an aminoplast resin. The interpolymer is admixed with an aminoplast resin to form a crosslinkable coating composition. The presence of the above sulfonic acids or sulfonates catalyzes the crosslinking reaction during baking and remains a part of the interpolymer.
Abstract:
In an aqueous coating composition comprising a vinyl polymer emulsion prepared by subjecting a vinyl monomer to emulsion polymerization in an aqueous medium in the presence of maleinized polybutadiene used as a dispersion stabilizer, an improvement which is characterized in that at least one copolymer is further incorporated, said copolymer being composed of (A) at least one monomer prepared by reacting one glycidyl ester of acrylic acid and methacrylic acid with at least one fatty acid of drying oil fatty acid and semi-drying oil fatty acid, (B) at least one .alpha.,.beta.-ethylenically unsaturated acid and (C) at least one unsaturated monomer containing substantially no carboxyl group and having a Q value of at least 0.1 as determined by Q-e theory.
Abstract:
1. A THERMOSETTING SYNTHETIC POLYMER DISPERSION COMPRISING A MIXTURE OF (I) A SYNTHETIC POLYMER DISPERSION COMPRISING PARTICLES OF A COPOLYMER FORMED FROM (A) A COPOLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER AND (B) A COPOLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER HAVING A CHEMICALLY REACTIVE CROSS-LINKING GROUP AND A PROTECTIVE LAYER FORMED AROUND SAID COPOLYMER PARTICLES, WHICH IS COMPOSED OF A STABILIZER (I) HAVING A COMPONENT COMPARTIBLE WITH SAID COPOLYMER OR BEING CHEMICALLY BONDED THERETO AND (II) BEING SOLVATED IN AN ORGANIC LIQUID HAVING NO POLARITY OR A LOW POLARITY, SAID COPOLYMER PARTICLES BEING STABLY DISPERSED IN THE ORGANIC LIQUID BY SAID PROTECTIVE LAYER AND HAVING AN AVERAGE PARTICLE SIZE OF 0.1 TO 10U, AND (II) A SYNTHETIC POLYMER DISPERSION COMPRISING PARTICLES OF A COPOLYMER FORMED FROM (A) A COPOLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMELR AND (C) A COPOLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER HAVING A COMPLEMENTARY, CHEMICALLY REACTIVE CROSS-LINKING GROUP CAPABLE OF REACTING WITH THE CHEMICALLY REACTIVE CROSS-LINKING GROUP OF THE PARTICLES IN DISPERSION (I) AND A PROTECTIVE LAYER FORMED AROUND SAID COPOLYMER PARTICLES, WHICH IS COMPOSED OF A STABILIZER (I) HAVING A COMPONENT COMPARTIBLE WITH SAID COPOLYMER OR BEING CHEMICALLY BONDED THERETO AND (II) BEING SOLVATED IN AN ORGANIC LIQUID HAVING NO POLARITY OR A LOW POLARITY, SAID COPOLYMER PARTICLES BEING STABLY DISPERSED IN THE ORGANIC LIQUID BY SAID PROTECTIVE LAYER AND HAVING AN AVERAGE PARTICLE SIZE OF 0.1 TO 10U.
Abstract:
POLYMERS CONTAINING A NORBORNENYL GROUP ARE READILY CROSSLINKED BY IRADIATION TO PRODUCE INSOLUBLE PRODUCTS. THE CROSSLINKED PRODUCTS ARE USEFUL AS COATINGS ON WOOD, METAL, ETC., AS SELF-SUPPORTIN FILMS, WIRE INSULATION, FOR THE TREATMENT OF FBRICS TO RENDER THEM MORE DURABLE AND CREASE RESISTANT, AS WELL AS IN THE MANY KNOWN AREAS IN WHICH YNTHETIC POLYMERS ARE EMPLOYED SUCH AS THE PRODUCTION OF MOLDED AND EXTRUDED SHAPED ARTICLES.
Abstract:
An un-reacted substantially formaldehyde free curable binder solution for binding loose matter consists essentially of a solution obtainable by dissolving a reducing sugar, an ammonium salt acid precursor, optionally a carboxylic acid or a precursor thereof and optionally ammonia in water.
Abstract:
An aqueous coating composition is provided that is preferably substantially free of styrene and structural units derived from styrene. The coating composition includes a resin system that preferably includes a water-dispersible polymer and an emulsion polymerized ethylenically unsaturated monomer component. The resin system is preferably formed using a process that includes emulsion polymerizing the ethylenically unsaturated monomer component in the presence of an aqueous dispersion including the water-dispersible polymer. In certain preferred embodiments, the water-dispersible polymer is a salt of an acid- or anhydride-functional aromatic polyether polymer.
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.