摘要:
A method for producing a water dispersible resin composition, comprising radically polymerizing, in the presence of a polymerization initiator, a starting mixture comprising (a) 10 to 95% by weight of a water insoluble resin having a solubility in water of not more than 1; and (b) 5 to 90% by weight of a monomer mixture which comprises (1) 2 to 75% by weight of an ethylenically unsaturated monomer having an acid group, and (2) 25 to 98% by weight of an ethylenically unsaturated monomer other than (1); and neutralizing the resulting resin composition containing an acid group by adding a neutralizing agent. A coating composition is provided which is stable and excellent in coating workability and has improved storage stability and solid components content of the coating composition. Since particles excellent in dispersibility improve the uniformity of a coated film, transparency, smoothness, chemical resistance, water resistance and mechanical strength of the coated film are also improved.
摘要:
A water-dispersible organic clay complex in which a quaternary ammonium ion having both an oxypropylene unit and an oxyethylene unit is present in interlamellar space of an expansible phyllosilicate. This complex is excellent in dispersibility in an aqueous medium and generates excellent water resistance of the resulting coated film when used as a rheology control agent for an aqueous coating composition.
摘要:
Disclosed is an aqueous coating composition which keeps in high nonvolatile contents during coating operation and is capable of being effectively applied even under a relatively high humidity condition. The coating composition imparts high orientation of metallic pigment particles to the cured film. The aqueous coating composition of the present invention comprises a specific acryl polymer varnish (a) and a specific urethane oligomer dispersion.
摘要:
Disclosed is a corrosion preventive coating composition comprising;(1) a corrosion preventive pigment which has a pH value of from 5 to 9, consisting essentially of(a) a specific phosphorus compound which generates phosphate ions in the presence of water, and(b) a specific vanadium compound which generates vanadate ions in the presence of water and oxygen, and(2) a film forming resin selected from the group consisting of maleic acid modified oils, epoxy resins, modified epoxy resins, alkyd resins, acryl resins, melamine resins, urea resins, blocked isocyanate resins, maleic acid modified polybutadiene resins, polyvinyl butylal, polyvinylalcohol, silicate esters, silicone resins, silicates and chlorinated rubber; said pigment being present in an amount of 0.1 to 50 parts by weight based on 100 parts by weight of a solid content of said coating composition.
摘要:
The present invention provides a metallic paint film featuring a remarkably excellent coating appearance as well as weather resistance, by using a specific combination of a water borne paint and thermosetting clear paint in compliance with the wet-on-wet two-coat, one-bake painting method.
摘要:
An aqueous coating composition which comprises (A) at least one aqueous resin selected from acryl, alkyd, polyester, acryl-modified alkyd and acryl-modified polyester resins, (B) at least one component selected from water-insoluble resinous particles having an average grain diameter of 0.3 to 6.mu., obtained by a polymerization of ethylenically unsaturated compound(s), and (C) optional additives, the weight ratio of said (A) to (B) (in solid) being 99:1.about.15:85. This aqueous paint is especially useful as a top-coat.
摘要:
The water dispersible resin of the present invention is contained in a base component of a two-component thermosetting resin composition. The water dispersible resin is prepared by dispersing a solvent resin in water, which solvent resin is obtained by solution polymerization, carried out in two or more stages, of a monomer mixture containing a polyfunctional monomer, an acid group-containing monomer, and a hydroxyl group-containing monomer, the polyfunctional monomer having a plurality of vinyl groups in its single molecule. The monomer mixture contains the polyfunctional monomer by not less than 0.1% by weight but not more than 3% by weight, and the water dispersible resin thus obtained has an acid value of solid content of not less than 10 mgKOH/g but not more than 45 mgKOH/g, a hydroxyl value of solid content of not less than 50 but not more than 200, and a viscosity of not less than 50 mPa·s but not more than 10,000 mPa·s when a nonvolatile content is 45% by weight. This makes it possible to provide a two-component thermosetting resin composition, which is easily dealt with, formed into a coating film having an excellent appearance, and further, has an excellent pot life.
摘要:
A method is provided of forming multilayer coating films having a high quality appearance while controlling interfacial bleeding or inversion between coating film layers otherwise found when a water-borne intermediate coating film and a water-borne metallic coating film are formed in that order. The method comprising forming coating films one after another on a substrate, namely forming an intermediate coating film using a water-borne intermediate coating, a metallic base coating film using a water-borne metallic base coat and a clear coating film using a clear coat, wherein said water-borne intermediate coating and/or said water-borne metallic base coat contains a polycarbodiimide compound and a carboxyl-containing aqueous resin.
摘要:
A thermosetting water-borne coating composition which, when used as a water-borne coating, have both sufficient curability and sufficient storage stability and provides coating films excellent in water resistance, a method of forming a coating film using the same and a method of forming a multilayer coating film using the same are provided. The coating composition comprises a polycarbodiimide compound modified for hydrophilicity and a carboxyl-containing aqueous resin composition, wherein the polycarbodiimide compound has a structure such that a carbodiimide unit and a polyol unit occur alternately via a urethane bond and repeatedly and a hydrophilic unit occurs at both molecular termini and is bound to a carbodiimide unit via a urethane bond.
摘要:
The present invention provides a water borne metallic coating composition which stably disperses a metallic pigment and provides good metallic appearance independently of coating conditions. The water borne coating composition of the present invention comprises a specific film forming polymer (I), a specific fluorine containing compound (II), a metallic pigment (III), a crosslinking agent (IV), a compound (V) selected from the group consisting of a phosphorus containing titanate coupling agent and a phosphoric mono- or di-ester of a C.sub.11- C.sub.24 organic compound.