An electrocoat system for electrodeposition is described. The system includes an inorganic bismuth-containing compound or a mixture of inorganic and organic bismuth-containing compounds. The system demonstrates a high degree of crosslinking and produces a cured coating with optimal crosslinking and corrosion resistance.

An electrocoat system for electrodeposition is described. The system includes an inorganic bismuth-containing compound or a mixture of inorganic and organic bismuth-containing compounds. The system demonstrates a high degree of crosslinking and produces a cured coating with optimal crosslinking and corrosion resistance.

The present invention provides an optically clear adhesive sheet having excellent environment resistance using a heat-curable polyurethane composition that has excellent flexibility and is capable of giving a thick film. The optically clear adhesive sheet of the present invention is formed of: a cured product of a heat-curable polyurethane composition, the heat-curable polyurethane composition containing a polyol component, a polyisocyanate component, and a tackifier, the polyol component having an olefin skeleton, the polyisocyanate component being a modified polyisocyanate that is obtained by reacting an acyclic aliphatic and/or alicyclic polyisocyanate containing an isocyanate group with an ether compound containing an ethylene oxide unit.

A curable composition including: a component (a): a polycarbonate polyol having a hydroxyl value of 40 to 75 mgKOH/g; a component (b): a polycarbonate polyol having a hydroxyl value of 100 to 280 mgKOH/g; and a component (c): a polyisocyanate having an average number of functional groups per molecule, of 2 to 6.

The present invention relates to a process for producing a solid, internally and externally blocked polyurethane curing agent based on a (cyclo)aliphatic polyisocyanate, in which, in the sequence of steps a) to d), a) i) at least one internally blocked (cyclo)aliphatic polyisocyanate and ii) at least one lactam and/or at least one aliphatic alcohol are dissolved in a solvent to produce a reaction mixture, b) the reaction mixture is heated and reacted, c) the reacted reaction mixture is cooled until product precipitates, and d) liquid solvent and any unreacted dissolved reactants and precipitated product are mechanically separated from one another.

An object of the present invention is to provide a transfer film capable of suppressing a corrosion of a wiring line and an electrode. In addition, an object of the present invention is to provide a method for producing a laminate using the transfer film. In addition, an object of the present invention is to provide a novel blocked isocyanate compound. The transfer film of the present invention has a temporary support and a photosensitive composition layer disposed on the temporary support, in which the photosensitive composition layer includes an alkali-soluble resin, a polymerizable compound, a polymerization initiator, and a blocked isocyanate compound having an NCO value of 4.5 mmol/g or more.

This blocked polyisocyanate composition contains a block polyisocyanate derived from one or more diisocyanates, an active hydrogen compound, and a blocking agent containing a malonic acid ester. The active hydrogen compound has a number-average molecular weight of 60 to 5,000 and an average of 1.6 to 2.4 functional groups.

A thermosetting coating composition includes a hydroxyl group-containing resin (A), a blocked polyisocyanate curing agent (B), and an amine compound (C) represented by the formula (1). In the formula (1), R.sup.1 to R.sup.5 each independently represents a hydrogen atom or an organic group having one or more carbon atoms. The organic group may contain one or more atoms selected from the group consisting of oxygen atoms, nitrogen atoms, sulfur atoms, and halogen atoms. ##STR00001##

A thermosetting coating composition includes a hydroxyl group-containing resin (A), a blocked polyisocyanate curing agent (B), and an amine compound (C) represented by the formula (1). In the formula (1), R.sup.1 to R.sup.5 each independently represents a hydrogen atom or an organic group having one or more carbon atoms. The organic group may contain one or more atoms selected from the group consisting of oxygen atoms, nitrogen atoms, sulfur atoms, and halogen atoms. ##STR00001##

The present disclosure provides a two-component polyurethane adhesive composition and a bonding method thereof. The two-component polyurethane adhesive composition includes A) a polyol component, and B) an isocyanate component. The polyol component includes A1) one or more polyether polyols, and the isocyanate component includes B1) a first isocyanate prepolymer, wherein the first isocyanate prepolymer is polymerized from isocyanate and a non-linear chain extender. The two-component polyurethane adhesive composition of the present disclosure has good mechanical properties, in particular, high G modulus and high elongation. The polyol component in the two-component polyurethane adhesive composition has good phase stability, and good miscibility with the isocyanate component. The two-component polyurethane adhesive composition of the present disclosure can be used for the production and manufacture of mechanical parts such as automobile components.