A polyoxazolidinone composition can include a reaction product of 1,5-pentamethylene diisocyanate-based polyisocyanate and poly-functional epoxide, wherein the 1,5-pentamethylene diisocyanate-based polyisocyanate and the poly-functional epoxide are combined at an equivalent ratio of from about 0.5:1 to about 1.5:1 isocyanate equivalents to epoxide equivalents in the presence of a reaction catalyst.

A waterborne poly(alkynyl carbamate) prepolymer is provided which comprises a reaction product of a polyisocyanate comprising a first portion and a second portion of isocyanate groups; an isocyanate-reactive component comprising 0.1 mol % to 6 mol % of a C.sub.10-C.sub.50 glycol ether; and 99.9 mol % to 94 mol % of an alkynol, wherein the mol % is based on the moles of isocyanate in the polyisocyanate, wherein the first portion of isocyanate groups reacts with the C.sub.10-C.sub.50 glycol ether, wherein the second portion of isocyanate groups reacts with the alkynol, and wherein reaction occurs optionally in the presence of a catalyst. The reaction of long chain glycol ethers with the polyisocyanate at a level of from 0.1 mol % to 6 mol % imparts water dispersibility to the prepolymer, and when the prepolymer is dispersed in water, the performance of waterborne alternative polyurethane compositions made therefrom, such as coatings, adhesives, sealants, films, elastomers, castings, foams, and composites, are not compromised. The invention allows for the use of water as a carrier, thus eliminating the need for organic solvents.

Provided is a urethane (meth)acrylate capable of achieving high strength and high elongation, as well as a method for manufacturing a urethane (meth)acrylate, a curable composition, a cured article, and a method for manufacturing a cured article. The urethane (meth)acrylate contains a structural unit derived from polycarbonate diol, a structural unit derived from polyisocyanate, and a hydroxy group-containing (meth)acrylate-derived group, the polycarbonate diol containing one or more types of structural unit represented by formula (1) wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represents an aliphatic hydrocarbon group having 1 to 6 carbon atoms. ##STR00001##

A polyurethane prepolymer composition is provided. The polyurethane prepolymer composition includes a first prepolymer, a second prepolymer and a third prepolymer. The first prepolymer includes a polyol and diisocyanates. The two ends of the polyol are connected with the diisocyanates. The second prepolymer includes a diisocyanate monomer. The third prepolymer includes a first diisocyanate, polyols and second diisocyanates. The two ends of the first diisocyanate are connected with the polyols. The other ends of the polyols are connected with the second diisocyanates. A polyurethane elastomer and a preparation method thereof are also provided.

The present disclosure relates to a dispersant having the following structure of Chemical Formula 1, a light emitting film in which the dispersant is adsorbed on a surface of an inorganic luminescent particle, and a light emitting diode and a light emitting device in which the light emitting film is applied into an emitting material layer and/or a color conversion film. The dispersant enables the inorganic luminescent particle to have excellent dispersion property and optical properties, and thus the light emitting diode and the light emitting device can its luminous efficiency and luminous lifetime.

##STR00001##

Two-component solventless polyurethane adhesive compositions are disclosed comprising an isocyanate component comprising an isocyanate blend, and a polyol component comprising an amine-initiated polyol comprising two or more primary hydroxyl groups and a backbone incorporating tertiary amines, wherein the amine-initiated polyol comprises a functionality of from 2 to 12, hydroxyl number of from 5 to 1,830, and a viscosity at 40 C. of from 500 to 20,000 mPa-s, and a silicone-based additive (e.g., an anti-foaming agent and/or a wetting agent). The adhesive compositions are formulated such that the isocyanate and polyol components can be applied to separate substrates prior to mixing. Laminate structures comprising the disclosed adhesive compositions and further comprising a polymeric barrier substrate are also disclosed.

The present invention provides a polyaspartic composition comprising a polyaspartate comprising a reaction product of a polyamine and a diester, and a C.sub.2 to C.sub.12 diol. The inventive polyaspartic compositions may be combined with polyisocyanates to produce polyurea coatings, adhesives, sealants, composites, castings, and films.

Provided is a urethane (meth)acrylate capable of achieving high strength and high elongation, as well as a method for manufacturing a urethane (meth)acrylate, a curable composition, a cured article, and a method for manufacturing a cured article. The urethane (meth)acrylate contains a structural unit derived from polycarbonate diol, a structural unit derived from polyisocyanate, and a hydroxy group-containing (meth)acrylate-derived group, the polycarbonate diol containing one or more types of structural unit represented by formula (1) wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represents an aliphatic hydrocarbon group having 1 to 6 carbon atoms.

##STR00001##

Polyester polyols made from thermoplastic polyesters are disclosed. The polyols can be made by heating a thermoplastic polyester such as virgin PET, recycled PET, or mixtures thereof, with a glycol to give a digested intermediate, which is then condensed with a dimer fatty acid to give the polyol. The invention includes a polyester polyol comprising recurring units of a glycol-digested thermoplastic polyester and a dimer fatty acid. The polyester polyol can also be made in a single step by reacting the thermoplastic polyester, glycol, and dimer acid under conditions effective to produce the polyol. High-recycle-content polyols having desirable properties and attributes for formulating polyurethane products, including aqueous polyurethane dispersions, can be made. The polyols provide a sustainable alternative to bio- or petrochemical-based polyols.

The present invention provides a formulation comprising: a) a polyol-containing component; b) a weighting agent or a pigment; c) an anti-settling agent selected from the group consisting of primary amines and secondary amines; and d) a polyisocyanate-containing component, wherein the anti-settling agent reduces foam formation during mixing of the formulation as compared to the formulation not containing the anti-settling agent. The formulation may provide improved drilling fluids, coatings, sealants, adhesives, composites, and films.