An one-part polyurethane composition, including: A) 15-75 wt.-% of at least one isocyanate-functional polyurethane polymer; B) 5-30 wt.-% of at least one organic thixotropy agent; C) 2-25 wt.-% of at least one plasticizer having viscosity of less than 500 mPa s, measured at 0° C. with cone-plate viscosimeter, shear rate 10 s.sup.−1, cone angle 1°, spindle 25-2, and cone tip-plate distance of 0.05 mm; D) 0-15 wt.-% of at least one solvent; E) 0-50 wt.-% of at least one filler; F) at least one catalyst for curing of polyurethane compositions; wherein isocyanate-functional polyurethane polymer has NCO content in range of 0.8%-2.5% by weight and is obtained from reaction of methylene diphenyl diisocyanate (MDI) and polyol in NCO/OH ratio of at least 3/1 and subsequent removal of non-reacted MDI; and polyol has viscosity, measured according to ASTM D4878-15 at 25° C., of less than 2000 mPa s; and isocyanate-functional polyurethane polymer has remaining content of MDI of at most 0.5% by weight.

A moisture-curable composition, including at least one organic polymer P containing reactive silane groups, between 1.0 wt.-% and 25.0 wt.-%, preferably between 2.0 wt.-% and 20 wt.-%, in particular between 2.5 wt.-% and 10 wt.-%, based on the total composition, of dimethyl or diethyl esters of aliphatic C3 to C5 dicarboxylic acids, and at least one curing catalyst for alkoxysilane groups. The moisture-curable composition is particularly suitable as elastic adhesive, coating, filler, or sealant and shows superior overpaintability, in particular with automotive topcoats or similar paints.

Provided herein is an additive manufacturing method of making a three-dimensional object comprising polyurea, comprising: (a) dispensing a one part (1K) dual cure resin into a stereolithography apparatus, the resin comprising or consisting essentially of a photoinitiator, a reactive blocked polyisocyanate, and optionally a polyepoxide, the reactive blocked polyisocyanate comprising the reaction product of a polyisocyanate and an amine or hydroxyl (meth)acrylate or (meth)acrylamide monomer blocking agent; (b) additively manufacturing from said resin an intermediate object comprising the light polymerization product of said reactive blocked polyisocyanate; (c) optionally cleaning said intermediate object; and (d) reacting said polymerization product in said intermediate with water to generate polyamine in situ that sequentially reacts with the remainder of the polymerization product to form urea linkages and hereby produce a three-dimensional object comprising polyurea. One part (1K) dual cure resins useful for the method are also provided.

This invention relates to an in-situ formed polyol blend having an overall functionality of 2 to 3 and an overall hydroxyl number of 50 to 150. A process for preparing these polyol blends is also disclosed. These in-situ formed polyol blends are suitable for preparing viscoelastic flexible polyurethane foams. A process for preparing these foams is also disclosed.

A moisture-curable composition having flame retardant properties and to the use thereof as an adhesive, sealant or coating. The composition according to the invention contains at least one moisture-reactive polymer in a proportion of 10% to 50% by weight, at least one precipitated, surface-coated aluminum trihydrate in a proportion of 30% to 60% by weight and in preferred embodiments up to 25% by weight of at least one phosphorus-containing compound and up to 20% by weight of at least one carbon additive. The inventive moisture-curable composition has excellent flame retardant properties and after curing remains resistant for a long time at high heat levels.

Flexible polyurethane foams are made by reacting a hydrophilic quasi-prepolymer, water and a polymer polyol in the presence of a silicone surfactant and an ethylene oxide/higher alkylene oxide block copolymer. The foams exhibit desirably low densities and compression sets, and have good thermal and moisture-wicking properties. The foams are useful in bedding and other comfort applications in which they are exposed to body heat and bear at least a portion of the weight of the user. The thermal and moisture wicking properties contribute to perceived comfort for the user.

Provided is a moisture curable polyurethane composition that is a moisture curable polyurethane having an isocyanate group on one end of a molecule thereof. The moisture curable polyurethane composition contains a moisture curable polyurethane (A) and an organic solvent (B). The moisture curable polyurethane (A) is obtainable by reacting a polyisocyanate compound having at least two isocyanate groups in a molecule thereof (A1) with a low-molecular weight polyol compound having at least two hydroxyl groups in a molecule thereof and having a number average molecular weight of 50-300 (A2). Also provided is a laminate including an optical substrate and a polyurethane resin layer comprising the moisture curable polyurethane composition.

An object of the invention is to provide a moisture-curable polyurethane resin composition containing a biomass raw material and having excellent adhesiveness to a fabric (particularly, a water-repellent fabric) and excellent film strength. The invention provides a moisture-curable polyurethane hot-melt resin composition containing: a urethane prepolymer (i) having an isocyanate group, which is a reaction product of a polyol (A) and a polyisocyanate (B), the polyol (A) containing a polyester polyol (a1) containing, as raw materials, a biomass-derived polybasic acid (x) and a biomass-derived glycol (y), and another polyester polyol (a2). In addition, the invention provides an adhesive containing the moisture-curable polyurethane hot-melt resin composition.

Very soft, launderable polyurethane foams for pillow and other bedding applications are made using a quasi-prepolymer of diphenylmethane diisocyanate and a polyether polyol having a high oxyethylene content. The quasi-prepolymer is reacted with isocyanate-reactive components that include a certain monoalcohol but is devoid of or nearly devoid of a polyether polyol having a high oxyethylene content.

The present invention provides a synthetic leather including at least a base material (i), an adhesive layer (ii), and a skin layer (iii), wherein the adhesive layer (ii) is formed of an anionic urethane resin composition containing an anionic urethane resin (S) having an anionic group concentration of 0.25 mmol/g or less, water (T), and an anionic surfactant (U), and the skin layer (iii) is formed of a urethane resin composition containing a urethane resin (A), for which a raw material is reactive silicone (a1) having a functional group that reacts with an isocyanate group, and containing water (B). Preferably, the urethane resin (A) is an anionic urethane resin having an acid value of 20 mgKOH/g or less.