Polyurethane coating compositions are disclosed that include an isocyanate-reactive component that includes a polycyclic polyether polyol that is the reaction product of a reaction mixture that includes a polycyclic polyol starter, and an alkylene oxide, as well as an isocyanate-functional component that includes a non-aromatic polyisocyanate. The polyurethane coating compositions may be particularly useful as a gel coat in the manufacture of glass fiber reinforced plastics.

A pneumatic tire that is vulcanized using a bladder provided with a coating layer comprising a release agent, the noise absorber being fixed to the inner surface of the tread portion along the tire circumferential direction via the adhesive layer, and the amount of silicon in the release agent detected by X-ray fluorescence analysis is 0.1 wt. % to 10.0 wt. % at least in the fixation region for the noise absorber.

An anti-sticking agent composition for an unvulcanized rubber of the present disclosure includes the following components (A) to (C), and water is provided. The component (A) contains the following component (A1) and the following component (A2). The component (A) is water-soluble polymer, the component (B) is metallic soap, the component (C) is surfactant, the component is (A1) water-soluble polymer other than the component (A2), and the component (A2) is non-ionic cellulose ether.

In a soundproof member 10 including a polyurethane foam 11 and disposed apart from an engine E on a vehicle interior side of a dash panel 50 partitioning a space into an engine room having the engine E as a sound source and a vehicle interior, the polyurethane foam 11 has a surface layer 12 on at least a part of the surface thereof, a one side surface of the polyurethane foam 11 directly facing the vehicle interior side of the dash panel 50 has at least a surface layer 12A in an open cell state or a core, and a surface layer 12B of the other side surface opposite to the one side surface is a surface layer in a closed cell state.

A pneumatic tire is vulcanized by using a bladder provided with a coating layer formed by a release agent, and the release agent has a thickness, detected by an electron microscope, of 0.1 μm to 100 μm on an inner surface of a tread portion 1.

A method of making a molded product. The method includes obtaining a mold having a cavity defined by interior surfaces and applying a gelcoat into the mold. The method further includes at least partially curing the gelcoat within the mold, dispensing a viscous polymeric material into the mold, and curing the polymeric material while the polymeric material is sandwiched between the gelcoat.

A sheet expressing a good tactile sensation and a molded product thereof. By configuring a resin sheet including hairlike bodies arranged regularly on at least one surface of an underlayer in which a continuous phase is formed without any structural boundary between the underlayer and the hairlike bodies, and the underlayer and the hairlike bodies have at least partially a crosslinked structure, a molded product expressing a good tactile sensation is obtained.

A method for manufacturing of a pre-form part for a wind turbine blade including one or more components and an adhesive, wherein the component or at least one of the components is a mat-like component including fibres, includes the steps: arranging the adhesive at one or more positions on the component or arranging the components in a stack, wherein the adhesive is arranged at one or more positions between the components, and heating the adhesive by providing an electric current to at least one actively heated layer, wherein the mat-like component is used as actively heated layer and/or wherein at least one additional mat-like heating means provided and arranged on top of or below the component or the stack of components is used as actively heated layer.

A novel cutting-edge structure and method and apparatus for manufacturing the cutting-edge structure is provided. The cutting-edge structure is comprised of naturally derived or renewable material at greater than 50% by volume fraction. In one embodiment, the naturally derived material is a cellulose nanostructure such as a cellulose nanocrystal. The cellulose nanocrystal is processed using a base or mold structure to provide a cutting edge of any shape such as linear or circular edge structures. The process includes dual cure steps to produce an optimal cutting-edge structure without shrinkage. The formed cutting-edge structure can be utilized as a razor blade as it is formed with very sharp tip and edge suitable for cutting hair. The base structure can form one or more cutting-edge structures simultaneously.

Three-dimensional objects are formed by photo-curing a liquid polymer by exposure to a radiation in a space between a sheet transparent to the radiation and a supporting plate. On a side of the sheet facing towards the photo-curing liquid polymer, a membrane is arranged. The membrane is transparent to the radiation and covered by a layer of liquid lubricant. The membrane is displaceable with respect to an area in which said liquid polymer is undergoing curing by exposure to the radiation, which radiation (e.g., at 410 nm) may be provided by a collimated light source composed of an array of light emitting diode (LED) sources, an array of baffles, and an array of lenses. The baffles limit beam widths of each individual LED source in the array of LED, and the array of lenses is located one focal length from said array of LED sources.