A stretchable film is made of, at least as a top surface of the stretchable film, a cured product of a stretchable film material containing a silicone polyurethane resin. The top surface of the stretchable film has a repeated uneven pattern formed with depths of 0.1 m to 2 mm and pitches of 0.1 m to 5 mm. Thus, the present invention provides a stretchable film having excellent stretchability, with the film top surface being excellent in water repellency and free from sticking; and a method for forming the stretchable film.

Novel polymers are depolymerizable by metathesis of a cleavable unit. As an example, a series of linear and crosslinked polyurethanes were prepared that can be selectively depolymerized under mild conditions. Two unique polyols were synthesized bearing unsaturated units in a configuration designed to favor ring-closing metathesis to five- and six-membered cycloalkenes. These polyols were co-polymerized with toluene diisocyanate to generate linear polyurethanes and trifunctional hexamethylene- and diphenylmethane-based isocyanates to generate crosslinked polyurethanes. The polyol design is such that the ring-closing metathesis reaction cleaves the backbone of the polymer chain. Upon exposure to dilute solutions of Grubbs' catalyst under ambient conditions, the polyurethanes were rapidly depolymerized to low molecular weight, soluble products bearing vinyl and cycloalkene functionalities. These functionalities enabled further re-polymerization by traditional strategies for polymerization of double bonds. This general approach can be expanded to develop a range of chemically recyclable condensation polymers that are readily depolymerized by orthogonal metathesis chemistry.

The present invention provides a stretchable film including: a cured product of a composition which contains (A) a poly(meth)acrylate compound having a polymerizable double bond and a siloxane bond, (B) a (meth)acrylate compound having a urethane bond, and (C) an organic solvent having a boiling point in the range of 115 to 200 C. at atmospheric pressure; wherein the component (A) is localized in the direction of the surface of the film. The stretchable film of the present invention is excellent in stretchability and strength as well as repellency on the film surface.

The present invention is a method for producing a polyfunctional polymer that contains a structural unit having a urethane bond and a polymerizable unsaturated bond in a side chain, and is characterised by including a reaction process in which a polymer (P) containing a structural unit (a) having a hydroxy group in a side chain and a monomer (M) having an isocyanate group and a polymerizable unsaturated bond are reacted in the presence of a bismuth carboxylate.

Described herein are conductive elastomeric foam materials and methods of making and using the same. The conductive elastomeric foam materials include a polymeric matrix, one or more conductive fillers, and one or more foaming agents. The polymeric matrix can include a thermoset polymer or a thermoplastic polymer. Also described herein are methods of making conductive elastomeric foam materials. Further described herein are molded products including the conductive elastomeric foam materials as described herein and wearable devices including the molded products.

An antireflection substrate includes a resin substrate, and an underlying layer, a hard coat layer, an antireflection layer, and a cover layer which are provided on the resin substrate in this order. The underlying layer is formed of a cured material of a hexafunctional or higher functional urethane (meth)acrylate compound (A1), the hard coat layer contains a cured material of a urethane (meth)acrylate compound (A) containing a trifunctional or less functional urethane (meth)acrylate compound (A2), the antireflection layer includes an intermediate refractive index layer having a refractive index of 1.50 to 1.75, a high refractive index layer having a refractive index of 1.60 to 2.00, and a low refractive index layer having a refractive index of 1.25 to 1.40 in this order from the hard coat layer side, the refractive index of the high refractive index layer being higher than that of the intermediate refractive index layer, and the intermediate refractive index layer, the high refractive index layer, and the low refractive index layer all containing a cured material of an organic/inorganic composite compound (B), and the cover layer includes a cured material of an organic/inorganic composite compound (B). The antireflection substrate having high antireflection performance and excellent elongation characteristics is suitable as a film for film insert molding.

An infrared transmissive product includes a body. The body is configured to cover a transmitting unit and a receiving unit for infrared rays in an infrared sensor. The body includes a base made of a transparent plastic having an infrared transmissivity, and a coating film layer that is formed on a rear surface of the base in a transmission direction of infrared rays from the transmitting unit and has an infrared transmissivity. The coating film layer includes dispersed aggregates of particles of a pigment.

The present invention provides a stretchable film that is excellent in stretch and strength and water repellency on the film surface, and a method for forming the stretchable film. The present invention was accomplished by a stretchable film including a resin having a branched siloxane bond having 3 to 11 silicon atoms on a side chain and having a urethane bond on a main chain.

A stretchable ink composition comprising a polyester; a polyurethane elastomer; water; a co-solvent; an optional surfactant; and an optional colorant.

Hybrid spray foams utilize a urethane reactant, a crosslinker, and an (optional) epoxy and/or acrylic resin along with a blowing agent and rheology modifier to produce a quick-setting foam that remains in place until the foam forms and cures. The urethane reactant may be formed as an adduct with or without the use of isocyanate chemistry. In some embodiments, the polyurethane oligomer is made by reacting cyclocarbonates and di- or polyamines, while in other embodiments the polyurethane backbone employs the use of commercially available capped or blocked urethane oligomers made by any method. The oligomers contain reactive groups, typically at the oligomer ends, that crosslink with crosslinkers or with acrylic or epoxy resins to form hybrid polyurethane foams. Foams may also contain a plasticizer, and/or a surfactant as well as other optional additives. Methods of making such foams are also provided.