The disclosure relates to a thermoset omniphobic composition, which includes a thermoset polymer with first, second, and third backbone segments, urethane groups linking the first and third backbone segments, and urea groups linking the first and second backbone segments. The first, second, and third backbone segments generally correspond to urethane or urea reaction products of polyisocyanate(s), amine-functional hydrophobic polymer(s), and polyol(s), respectively. The thermoset omniphobic composition has favorable omniphobic properties, for example as characterized by water and/or oil contact and/or sliding angles. The thermoset omniphobic composition can be used as a coating on any of a variety of substrates to provide omniphobic properties to a surface of the substrate. Such omniphobic coatings can be scratch resistant, ink/paint resistant, dirt-repellent, and optically clear. The thermoset omniphobic composition can be applied by different coating methods including cast, spin, roll, spray and dip coating methods.

This disclosure provides a pigmented primer composition for forming an n-acyl urea coating on a substrate. The pigmented primer composition includes a polycarbodiimide-polyurethane hybrid. The pigmented primer composition also includes an acid functional polymer and an organic solvent, and includes less than or equal to 10 weight percent of water based on a total weight of the pigmented primer composition. The pigmented primer composition also includes a pigment, an inorganic filler, and less than about 100 parts by weight of toluene diisocyanate per one million parts by weight of the pigmented primer composition. The n-acyl urea coating exhibits corrosion resistance of 2 to 10 as determined using ASTM B117 and ASTM D-1654-08 on a substrate that is unpolished cold rolled steel, aluminum, or galvanized steel.

The present invention relates to a molding made of foam, wherein at least one fiber (F) is located partly within the molding, i.e. is surrounded by the foam. The two ends of the respective fiber (F) not surrounded by the foam thus each project from one side of the molding. The foam is produced by polymerization of a reactive mixture (rM) comprising at least one compound having isocyanate-reactive groups, at least one blowing agent and at least one polyisocyanate.

A system for forming an elastomeric composition for application to a substrate includes an isocyanate component and an isocyanate-reactive component. The isocyanate component includes a polymeric polyisocyanate and optionally an isocyanate-terminated prepolymer. The isocyanate-reactive component is reactive with the isocyanate component and includes a polyol component and a polyetheramine. The polyol component is a mixture of (a) a hydrophobic polyol; (b) a polyether polyol different than the hydrophobic polyol and having a weight average molecular weight greater than 500 g/mol; and (c) a polyaminopolyol. The elastomeric composition is formed as the reaction product of the isocyanate component and the isocyanate-reactive component and may be applied as an elastomeric coating layer on a substrate such as a steel pipe. The steel pipe having the applied elastomeric coating layer satisfies the standard for use in the water supply industry as set forth in AWWA C222.

The present invention generally relates to polyurethanes and polyurethane nanocomposites having improved mechanical, rheological, and thermal properties over ordinarily produced polyurethanes and polyurethane nanocomposites. Such polyurethanes and polyurethane nanocomposites include very small amounts of a small chain diol, such as glycerol, and more specifically, between 0.01 and 4 weight percent of the small chain diol, based on the total polymer composition.

An in-situ formed polyurethane catalyst for catalyzing the formation of polyurethane in a reactive composition comprising polyisocyanate compounds and isocyanate reactive compounds, said catalyst formed by combining in said reactive composition: At least one lithium halide compound, and At least one epoxide compound
wherein the amount of epoxide to be used is such that the number of epoxide equivalents per isocyanate equivalents is from larger than 0 up to 0.095 and the number of moles of lithium halide per isocyanate equivalent ranging of from 0.0001-0.06.

In a method for reducing a volatile organic compound, a polyurethane foam contains a compound represented by the following formula (1).

##STR00001##

(wherein, NR represents the following partial structural formula (A) or the following partial structural formula (B), and X.sup. represents an anion.)

##STR00002##

(wherein, R.sup.1 is preferably a methyl group.)

##STR00003##

(wherein, R.sup.2 is preferably a methyl group and n preferably represents 1.)

Disclosed is a process comprising: a) forming a reaction mixture containing at least one polyisocyanate and a polyisocyanate-reactive compound comprising at least one alkoxylated lignin dispersion; and b) curing the reaction mixture to form a polymer.

A thermoplastic polyurethane is obtained via reaction of isocyanates (a) with a polyol component (b) having at least one polyesterdiol (b1), at least one polyetherdiol (b2) and at least one polycarbonatediol (b3), in each case with a molar mass of from 500 to 5000 g/mol, and also with at least one diol with a molar mass of from 62 to 500 g/mol. The thermoplastic polyurethane can be used for producing moldings, more particularly seals, coupling stars, valves, and profiles. The polyurethane has exceptional mechanical and chemical properties.

The present disclosure provides a method of preparing a bio-based waterborne polyurethane intermediate. The method comprises the following steps:(a) mixing bio-based isocyanate polymer, sorbitol, fatty acid-substituted glycolipid copolymer, dihydroxyl-terminated polydialkylsiloxane, and a solvent; (b) adding a first initiator to a mixture of step (a) to carry out polymerization; and (c) adding water, an emulsifier, and acetic acid to the product of step (b) to form the bio-based waterborne polyurethane intermediate. The present disclosure also provides a method of preparing a bio-based polyurethane-acrylic hybrid fluorine-free water repellent. The bio-based polyurethane-acrylic hybrid fluorine-free water repellent is derived from aforesaid bio-based waterborne polyurethane intermediate and an acrylic-based fluorine-free water repellent.