The present invention provides a thermoplastic polyurethane composition for injection molding and a method of manufacturing the same. The thermoplastic polyurethane composition for injection molding can be easily injection-molded since a slip property is imparted to a soft segment, and can possess excellent durability properties such as heat-aging resistance, photoaging resistance, and wear resistance, and stability properties such as airbag deployment performance and anti-fogging property, as well as excellent tactile sensation and embossing quality, when a chain extender and a multifunctional polydimethylsiloxane-based compound are mixed with an isocyanate- and ether-containing polyester polyol, and can be useful in simplifying processes, reducing manufacturing costs, and simplifying facilities due to a decrease in the number of parts when molded articles are manufactured using the composition.

Disclosed are a hydroxy-capping monomer, its polycarbonate and an article including the same. Disclosed is a capping monomer capable of greatly improving mechanical properties and weather resistance when applied to polycarbonate, and polycarbonate containing the same, being prepared at high economic efficiency and having superior mechanical properties and excellent weather resistance.

Disclosed are polyurethane sealing material and a preparation method and an application thereof, to solve the technical problems in the prior art that the polyurethane seal material suffers from poor aging resistance and inadequate compression deformation properties. By adding the polyether carbonate polyol in the formulations, the polyurethane sealing material prepared in the present disclosure has better elongation at break, tensile strength, and tear strength after aging than those under normal conditions, and has lower permanent compression set; and no crosslinking agent is added in the present disclosure, such that the material can be prevented from losing elasticity at a lower temperature, and improved process operability and appearance can be obtained. The polyurethane sealing material prepared in the present disclosure can be applied in air filter sealing rings.

Provided is a two-component polyurethane composition, comprising, (a) an isocyanate component that comprises: at least one aromatic isocyanate compound, and (b) a polyol component that comprises: at least one polyether polyol compound, a sulfide-free urea or a derivative thereof, an alcohol chain extender, wherein the isocyanate component and polyol component have an NCO/OH ratio of from 0.9:1 to 1.2:1. Also provided are a product prepared using the polyurethane composition, and the preparation method thereof.

The present invention provides a glossy finish sandwich composite, comprising face sheet as skin element and a core element; wherein, the skin element is a composite selected from the group consisting of inorganic industrial waste particulates reinforced polymeric composite; fibres reinforced polymeric composite; and fibres and particulate reinforced hybrid polymer composite; wherein, the core element is selected from the group consisting of polyurethane foam and wastes reinforced polymeric material. The present invention also provides a novel process for developing glossy finish high performance hybrid sandwich composite(s). Moreover, the sandwich composite(s) of the present invention are unique materials which have versatile applications in wider spectrum of utility in sustainable manner and address issues on waste management, effective utilisation of renewable resources and agro-wastes.

The present invention relates to polyurethane based solid surface materials with improved dimensional stability which can be made using conventional inorganic fillers without pre-treatment of the fillers.

Metal-organic thermoset polymers are provided. The metal-organic thermoset polymers can be formed from a mixture including at least one epoxy resin and at least one metal alkoxide. Articles including the metal-organic thermoset polymers and processes for manufacturing the metal-organic thermoset polymers are also provided.

The present invention discloses a formula of a cosmetic optical silicone massage head and a preparation process therefor. The formula of the cosmetic optical silicone massage head includes a component A and a component B; where the component A includes the following raw materials in parts by weight: 91.8% of polymethylsiloxane, 4.95% of hydroxy silicone oil, 2.75% of stearic acid, and 0.5% of platinum catalyst; and the component B includes the following raw materials in parts by weight: 91.8% of polymethylsiloxane, 4.2% of hydroxy silicone oil, 1.6% of hydrogen silicone oil, 2.3% of stearic acid, and 0.1% of ethynylcyclohexanol. The formula of the cosmetic optical silicone massage head according to the present invention has good fluidity, high transparency, high strength, high tensile strength, and good tear resistance.

A composition includes a reaction product of a mixture of elemental sulfur and at least a first ethylenically unsaturated compound comprising a hydroxyl or carboxyl group.