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.

The invention relates to decorative cosmetic compositions containing specific polyurethanes or aqueous dispersions thereof and containing constituents that produce decorative effects.

The present disclosure provides a jet-black multilayer coating film having excellent properties in high appearance, water resistance, and humidity resistance and comprising a base coating film and a clear coating film formed by a coating composition containing a plant-derived aliphatic polyester mainly and a method for forming the same. A jet-black multilayer coating film comprising a base coating film layer formed by a base coating composition which contains a polyester polyol (A-1) containing a polyol having three or more functions and lactic acid as a consisting component of 80 mol % or more and having a hydroxyl value of 140 to 240 mgKOH/g wherein 70 mol % or more of the hydroxyl groups are secondary hydroxyl groups, an acrylic resin (A-2) with a hydroxyl value of 30 to 80 mgKOH/g and a glass transition point of 40 to 80° C., and a polyisocyanate (A-3), and a clear coating film layer formed on said base coating film layer by a clear coating composition which contains a polyester polyol (B-1) obtained by polymerization of a raw composition of a polyol having three or more functions, sebacic acid, and a diol and having a hydroxyl value of 140 to 240 mgKOH/g, an acrylic resin (B-2) with a hydroxyl value of 120 to 220 mgKOH/g, and a polyisocyanate (B-3).

A polyurethane dispersion PUD comprises at least one polyurethane P based on at least one polyisocyanate and at least one polyester polyol PES, wherein the polyester polyol PES is based on at least one polyhydric alcohol A and at least one dicarboxylic acid D, wherein at least one polyhydric alcohol A and/or at least one dicarboxylic acid D were at least partly derived from renewable raw materials.

The present inventions concerns compositions for producing thermoset polyurethanes, comprising polyisocyanates and polyols selected from a list consisting of allieyclic, aromatic compounds and branched polyesters. The films obtained from these compositions exhibit a high transparency, high thermal stability and good chemical resistance, and a method to produce the same. The said polyurethane films can be widely used in electronics industry where high transparency, high thermal resistance and good chemical resistance are the main requirements. Particularly, these films can be used as the substrates for conductive coatings and barrier coatings. These functionally coated films are particularly useful in applications such as touch panels or photo-voltaic cells.

The present invention relates to a composition comprising 10 to less than 50 wt.-% of at least one oligomeric polyisocyanate a-1) based on hexamethylene diisocyanate and more than 50 to 90 wt.-% of at least one polyisocyanate a-2) based on isophorone diisocyanate, comprising monomeric isophorone diisocyanate and at least one oligomeric isophorone diisocyanate, and an isocyanate-reactive component selected from the group consisting of polyester polyol, polyether polyol and mixtures thereof. It has been shown that the above mentioned mixture of the specific isocyanate group containing components improves the thermal and mechanical properties of a cured composition. Thus prepared molded articles are particularly suitable for the preparation of spectacle lenses, inter alia due to these properties.

The present application discloses a wind turbine blade having on the outer surface thereof a polyurethane-based coating including a polyurethane binder prepared from polyol(s) having an average functionality of ≧2.0 and <8.0; at least 50% (w/w) of the polyols have aliphatic polyester segments included therein and have a Mw of 300-3,000 g/mol; and polyisocyanate(s) having an average functionality of <3.0; at least 50% (w/w) of the polyisocyanate(s) are selected from: (i) polyisocyanates having aliphatic polyester segments included therein, and having a molecular weight of 500-3,000 g/mol and a functionality of ≧2.0 and <3.0; (ii) polyisocyanates of the allophanate type having a Mw of 250-2,000 g/mol and a functionality of ≧2.0 and <3.0; and (iii) polyisocyanates of the uretdion type having a Mw of 250-2,000 g/mol and a functionality of ≧2.0 and <3.0. The application also discloses corresponding coating compositions and a method for coating a substrate.

The present application relates to a resin or polymer system suitable for two-component compositions, and a resin or polymer system configured for durable coatings with only thin coating weights. The resins and polymer systems of this invention provide high performance extremely thin, low gloss coatings with excellent adhesion, abrasion, scratch and chemical resistance The resins include a polyester component with one or more polyester polyols having a hydroxyl value of about 50 to about 300 and a polyurea component with one or more polyester polyol grafted polyurea polymers having a hydroxyl value of about 20 to about 100. These resin or polymer systems and two-component solvent borne coating compositions including such resin or polymer systems are surprisingly capable of achieving strong adhesion, excellent linear abrasion, and high chemical resistance all at the same time in a dry film thickness of about 2 mil or less, in some instances, about 1.2 mils or less, and in other instances, even about 1 mil or less.

The present invention provides a composition as well as a method for repairing deep scratches, gouges, etc. and which is particularly useful for aircraft and aerospace transparency repair. The composition is a blend of a polishable two-part, solvent-free, polyurethane coating composition for repairing the transparencies and which, after application, cures to a thermoset polyurethane. An optical grid is emplaced over the area to be repaired prior to applying the blend.

The method is described herein for forming a polymer, comprising providing a first monomer comprising a polyol having at least two hydroxyl groups; providing a second monomer comprising a polyalkyl ester of a polycarboxylic acid having at least two alkyl ester groups; mixing the first monomer and the second monomer to form a reaction mixture; and reacting the first monomer and the second monomer in the mixture by transesterification to form a polyester polymer, which may, if desired be crosslinked. The polymers may also be copolymerized with other monomers. Polymers and copolymers formed from the method herein, as well as articles formed therefrom are also described. Such polymers and articles may be biocompatible and/or bioresorbable.