A composite polyurethane condom and a preparation method thereof. The composite polyurethane condom includes a first substrate layer, an adhesive layer formed on the first substrate layer, and a second substrate layer formed on the adhesive layer. A special adhesive layer is added between the two layers of materials, so that, for example, two materials with different polarities can be firmly attached together without delamination.

A bacterial cellulose-polyurethane composite material, preparation method, and use are described. The preparation method comprises: performing organic solvent exchange on bacterial cellulose microfibers, and obtaining bacterial cellulose microfiber composite substance A and composite substance B of different concentrations; under oil bath conditions, adding a polymer polyol and a diisocyanate compound and performing an addition polymerization reaction, obtaining, via the reaction, a bacterial cellulose composite polyurethane foam prepolymer; and subsequently performing curing and obtaining the bacterial cellulose-polyurethane composite material. By combining bacterial cellulose microfibers and polyurethane foam material, the mechanical properties of the composite material are significantly improved; the large amount of hydroxyl groups on the surfaces of the bacterial cellulose nanofibers effectively strengthens the hydrophilicity and water absorption capability of the composite material; and the favorable tissue affinity of bacterial cellulose can also improve the biocompatibility of polyurethane material.

This blocked polyisocyanate composition contains a block polyisocyanate derived from one or more diisocyanates, an active hydrogen compound, and a blocking agent containing a malonic acid ester. The active hydrogen compound has a number-average molecular weight of 60 to 5,000 and an average of 1.6 to 2.4 functional groups.

The present disclosure provides a photocurable composition, which has excellent coatability and is capable of providing a coating layer having excellent surface quality and thickness uniformity, a coating layer including a cured product of the photocurable composition, and a substrate for a semiconductor process including the coating layer.

A resin composition, the resin composition comprising a prepolymer (209) and optionally one or more diluent(s) (FIG. 3A), the prepolymer (209) comprising repeating units having at least one carbonate linkage and at least one unsaturated side-chain, the at least one optional diluent(s) comprising at least one unsaturated side-chain, wherein either or both of the prepolymer (209) and the at least one optional diluent(s) comprises at least one O═C—N linkage, preferably a urethane linkage.

A system for applying a coating composition to a substrate utilizing a high transfer efficiency applicator is provided herein. The system includes a storage device for storing instructions for performing a matching protocol, and one or more data processors configured to execute the instructions to, receive, by one or more data processors, target image data of a target coating, the target image data generated by an electronic imaging device, and apply the target image data to a matching protocol to generate application instructions. The system further includes a high transfer efficiency applicator defining a nozzle orifice. The high transfer efficiency applicator is configured to expel the coating composition through the nozzle orifice to the substrate to form a coating layer. The high transfer efficiency applicator is configured expel the coating composition based on the application instructions.

The invention relates to a fluorinated, alkoxysilyl-functional polymer, obtainable by a method comprising the steps of: a) reacting an OH-functional (per)fluoropolyether (PFPE) with a polyisocyanate A under urethane formation reaction conditions, to obtain an isocyanate-functional intermediate B, b) reacting intermediate B with a secondary, alkoxysilyl-functional monoamine C, to obtain the alkoxysilyl-functional polymer. The polymer can be used as an additive in preparation of a coating with easy-clean, anti-stain and anti-scratch properties, which can advantageously be used for coating various substrates in consumer electronics or automotive applications such as glass, metal, metal alloy, anodized substrates, plastics, composite etc.

Disclosed are compositions that may be useful for forming synthetic membranes, methods of forming membranes therefrom, and membranes. In an embodiment, a membrane comprises a free hydrophilic polymer comprising a polyoxazoline, and a polyurethane, the polyurethane comprising a backbone comprising the reaction product of a diisocyanate, a polymeric aliphatic 5 diol, and optionally a chain extender.

A composition for use as a drier in auto-oxidizable coatings or as an accelerator in unsaturated polyester resins comprises a manganese-bearing polymer having a manganese dicarboxylate repeating unit and at least one nitrogen-containing donor ligand. Such compositions offer excellent drying performances. They ensure a strongly reduced leachability of manganese compared to that of known manganese-bearing driers.

A water-based polyurethane resin and a method for manufacturing the same are provided. The method for manufacturing the water-based polyurethane includes: a preparation step of a prepolymer, a dilution step of the prepolymer, a water dispersion and chain extension step, and an acrylic synthesis step. The method further includes mixing polyol and polyisocyanate to obtain a prepolymer, and diluting the prepolymer by adding acrylic monomer in the prepolymer. In the water-based polyurethane resin, at least one of the polyhydric alcohol, polyisocyanate, and the acrylic monomer includes a compound with a cyclic structure.