A polyurethane-based UV absorber, obtained by reacting a UV absorber having a reactive hydrogen with a polyisocyanate and a diol or polyol; wherein the weight average molecular weight of the polyurethane-based UV absorber is in a range of 10,000 to 200,000.

A polyurethane-based UV absorber, obtained by reacting a UV absorber having a reactive hydrogen with a polyisocyanate and a diol or polyol; wherein the weight average molecular weight of the polyurethane-based UV absorber is in a range of 10,000 to 200,000.

A method for obtaining self-cleaning and self-sanitizing surfaces of finished leather, comprising the steps of deposition of two coating layers containing respective active mixtures on the finished leather surface, in which a first active mixture comprises a film-forming compound based on polymers and filler, a flow additive compound, a cross-linking compound, an anti-oxidant compound and an aqueous dispersion, and a second active mixture comprises a water-based auxiliary flow additive compound, a silicone emulsion, a solvent aliphatic prepolymer, a photo-catalyst compound, a water repellent agent, a biocide action powder agent and solvent agents and/or wetting agents and/or dispersing agents and/or anti-foam agents.

A pressure sensitive adhesive composition includes a polyurethane polymer that includes the reaction product of a polyisocyanate component and a polyol component. The polyol component has a total solubility parameter ranging from 10 to 14 (cal/cm.sup.3).sup.1/2.

A pressure sensitive adhesive composition includes a polyurethane polymer that includes the reaction product of a polyisocyanate component and a polyol component. The polyol component has a total solubility parameter ranging from 10 to 14 (cal/cm.sup.3).sup.1/2.

A colorless radiation curable binder dispersion includes water and a radiation curable polyurethane. The polyurethane is formed from a polyisocyanate; an acrylate or methacrylate having at least two hydroxyl (OH) groups and an acrylate or methacrylate group; another acrylate or methacrylate having an OH or amino group; and one of: i) a sulfonate or sulfonic acid having one amino group; ii) a combination of i and a compound including a carboxylic group and an OH or amino group; iii) a combination of i and a homopolymer or copolymer of poly(ethylene glycol) having one or two OH or amino groups at one chain end; or iv) a combination of i, a compound including a carboxylic group and an OH or amino group, and a homopolymer or copolymer of poly(ethylene glycol) having one or two OH or amino groups at one chain end.

An embodiment includes a platform shape memory polymer system. Such an embodiment exhibits a blend of tunable, high performance mechanical attributes in combination with advanced processing capabilities and good biocompatibility. A post-polymerization crosslinking synthetic approach is employed that combines polyurethane and thiol-ene synthetic processes. Other embodiments are described herein.

A method of forming a three-dimensional object, wherein said three-dimensional object is an insert for use between a helmet and a human body, is described. The method may use a polymerizable liquid, or resin, useful for the production by additive manufacturing of a three-dimensional object, comprising a mixture of (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from said first component.

A method of forming a three-dimensional object, wherein said three-dimensional object is an insert for use between a helmet and a human body, is described. The method may use a polymerizable liquid, or resin, useful for the production by additive manufacturing of a three-dimensional object, comprising a mixture of (i) a light polymerizable liquid first component, and (ii) a second solidifiable component that is different from said first component.

In general the present invention relates to polyurethanes based on the reaction of (a) a disocianate composition with (b) depolymerized lignin containing lignin-derived monomers, or the products of their respective functionalization; (c) a polyol composition, if desired (d) chain extenders, if desired. (e) additives, if desired. More specifically, this process relates to the use of depolymerized lignins containing varying amounts of 4-hydroxylalkylphenols or 4-alkylphenols and their derivatives. The polyurethanes can be partially or fully bio-based. Furthermore, the invention relates to a method for preparing these polyurethanes and to their use.