Provided is an adhesive comprising a reaction product of (A) an aliphatic polyisocyanate having a molecular weight of from 132 to 700; and (B) a polyaspartate comprising a reaction product of (B1) a polyamine having a molecular weight of at least 240, and (B2) a Michael addition receptor, wherein viscosity @23 C. according to ASTM D1084-16, remains below 150 cps after four hours, and wherein the adhesive develops an acceptable bond strength to a substrate, defined as having a minimum of 150 g/in. measured @23 C. according to ASTM D 1876-01 or substrate tear, in less than five days after the substrate is laminated with the adhesive. The inventive flexible packaging adhesives are free of aromatic amines and may find use in multilayer laminates for a variety of industries, including the food processing, cosmetics, and detergents industries.

The invention relates to layer structures containing polyaspartic primers (AG) and curable compositions based on silane-modified polymers (KS), and to a method for adhesion of flooring onto pre-treated substructures.

A polyurethane catalyst comprises a sodium compound, the sodium compound being 1 to 60 wt % of the polyurethane catalyst by the mass percent, and further comprises a tertiary amine and/or pyridine compound. The sodium compound and the tertiary amine and/or pyridine compound achieve a synergistic effect; during the catalysis of the polymerization of isocyanate and polyalcohol, the speed of the polymerization reaction is increased; and the prepared polyurethane material has excellent physical properties, does not contain any heavy metal element at all, is an environment-friendly catalyst, solves the technical problem of ensuring environmental protection, safety and the catalytic efficiency of the polyurethane catalyst, and is particularly applicable to the preparation of polyurethane synthetic leather resin slurry, a polyurethane elastomer (prepolymer), a polyurethane coating, a polyurethane adhesive, a polyurethane composite material, flexible polyurethane foam, and a rigid polyurethane material.

A composite laminate structure includes one or more layers of prepreg and a thermoplastic polyurethane film layer on the surface of the one or more prepregs. A method of making a composite laminate structure including a thermoplastic polyurethane film is also provided.

A poly(amide-imide) copolymer including an amide structural unit having an amide bond in a polymer main chain and an imide structural unit having an imide bond in a polymer main chain, wherein at least one imide structural unit includes a moiety cross-linked to an adjacent polymer main chain through an amide bond.

The present disclosure relates to a primer coating material composition, obtainable by combining at least two components (A) and (B) of a coating material system, which are different from one another and present separately from one another, with component (B) being nonaqueous and including at least one polyisocyanate having more than two free isocyanate groups, at least one organic solvent, and, further, at least one Si-containing compound which contains at least one hydrolyzable radical and at least one non-hydrolyzable organic radical, for at least partial application to at least one optionally pretreated surface of a plastics substrate, to a method for producing a corresponding coating on such a substrate, and to a method for at least partially coating at least one surface of a plastics substrate with a multicoat paint system.

Polymers are disclosed that incorporate portions of secondary or tertiary polyamide segments connected with polyisocyanates. These polymers have enhanced matting properties. The enhanced matting properties are from creating an inherently matt surface from the polymer without the use of any separate fine particle size matting additives. Conventional matting agents such as fine particle size silica usually results in loss of physical properties such as haze development and porosity in the coating from the matting agent. Composites and hybrids of these polymers and other polyamides, polyurethane with vinyl polymers (acrylates) are also disclosed and claimed.

An improved process for forming polyamide dispersions in water utilizing carbon dioxide to facilitate dispersion of the polyamide is disclosed. The polyamides are generally below 30,000 or 40,000 g/mole molecular weight when dispersed, but can be chain extended with polyfunctional species such as polyisocyanates after dispersion. The dispersions are useful in coatings, adhesives, and inks. Composites and hybrids of these other polyamides with vinyl polymers are also disclosed and claimed.

The present invention provides a stretchable film including: a cured product of a composition which contains (A) a poly(meth)acrylate compound having a polymerizable double bond and a siloxane bond, (B) a (meth)acrylate compound having a urethane bond, and (C) an organic solvent having a boiling point in the range of 115 to 200 C. at atmospheric pressure; wherein the component (A) is localized in the direction of the surface of the film. The stretchable film of the present invention is excellent in stretchability and strength as well as repellency on the film surface.

To provide an acrylic sol composition capable of reducing deterioration of physical properties of a sealing material due to moisture absorption after being left in a high-temperature and high-humidity atmosphere for a long time, and also suppressing oxygen inhibition. An acrylic sol composition contains an acrylic resin, an ultraviolet curing resin, a blocked isocyanate resin, and a filler, wherein, with respect to 100 parts by weight of the acrylic resin, 80 to 150 parts by weight of the ultraviolet curing resin, 50 to 110 parts by weight of an amine-based blocked isocyanate resin as the blocked isocyanate resin, and 100 to 180 parts by weight of silica as the filler are contained.