The present invention relates to a new process for preparing polyisocyanates containing isocyanurate groups and being flocculation-stable in solvents from (cyclo)aliphatic diisocyanates.

Embodiments of the present disclosure are directed towards solvent-based compositions that include a reaction product formed by reacting a polyol and an aminopolycarboxylic compound.

Described herein is a composition including at least one polyurethane polymer. Also described herein are a method of using the composition including at least one polyurethane polymer for metal pre-treatment and a process for metal pre-treatment.

Embodiments of the present disclosure are directed towards solvent-based compositions that include a reaction product formed by reacting a polyol and an aminopolycarboxylic compound.

There is provided a urethane resin that is excellent in adhesive strength, and maintains high adhesive strength even after exposure to high temperature and humidity. A urethane resin obtained by reacting a glycol-modified aromatic hydrocarbon-formaldehyde resin (A) modified with a glycol with a polyisocyanate (B) having two or more free isocyanate groups in a molecule.

The present invention is directed to a curable film-forming composition comprising: (a) a curing agent comprising reactive isocyanate functional groups; (b) a film-forming compound comprising functional groups reactive with the reactive isocyanate functional groups in (a); (c) a photo-latent catalyst; (d) a beta-diketone having a flash point higher than 60 C (140 F); and (e) a beta-diketone having a flash point lower than or equal to 60 C (140 F). The invention is further directed to methods of controlling the rate of cure and increasing the wet-edge time of a curable film-forming composition comprising an isocyanate functional curing agent, by adding to the curable film-forming composition a catalyst component comprising: (i) a photo-latent catalyst; (ii) a beta-diketone having a flash point higher than 60 C (140 F); and (iii) a beta-diketone having a flash point lower than or equal to 60 C (140 F).

The invention relates to storage-stable pigmented formulations containing isocyanate groups, comprising at least one pigment a., at least one component b. containing isocyanate groups, at least one wetting agent and/or dispersant c., at least one isocyanate group-containing grinding resin d. and optionally solvents, wherein the formulation has a viscosity increase of less than 500% after storage at 50° C. over a period of at least 3 days. The invention also relates to the preparation of such formulations and to the use thereof

The present invention is directed to a curable film-forming composition comprising: (a) a curing agent comprising reactive isocyanate functional groups; (b) a film-forming compound comprising functional groups reactive with the reactive isocyanate functional groups in (a); (c) a photo-latent catalyst; (d) a beta-diketone having a flash point higher than 60 C (140 F); and (e) a beta-diketone having a flash point lower than or equal to 60 C (140 F). The invention is further directed to methods of controlling the rate of cure and increasing the wet-edge time of a curable film-forming composition comprising an isocyanate functional curing agent, by adding to the curable film-forming composition a catalyst component comprising: (i) a photo-latent catalyst; (ii) a beta-diketone having a flash point higher than 60 C (140 F); and (iii) a beta-diketone having a flash point lower than or equal to 60 C (140 F).

There is provided a urethane resin that is excellent in adhesive strength, and maintains high adhesive strength even after exposure to high temperature and humidity. A urethane resin obtained by reacting a glycol-modified aromatic hydrocarbon-formaldehyde resin (A) modified with a glycol with a polyisocyanate (B) having two or more free isocyanate groups in a molecule.

Water-based polyurethane dispersion methodology relating to a chain-extended polyurethane, characterized in that the polyurethane dispersion includes 2, 5, 7, 10-tetraoxaundecane. The water-based polyurethane dispersion is suitable as a non-hazardous water-based coating composition for coatings with a particularly good adhesion on plastic or rubber substrates. The solvent 2, 5, 7, 10-tetraoxaundecane contained therein imparts good film coalescing, good adhesive properties and high strength of the polyurethane dispersion.