An object of the invention is to provide a urethane resin composition containing a biomass raw material and having excellent moisture permeability and excellent film strength. The invention provides a urethane resin composition containing a urethane resin (X), the urethane resin (X) containing, as essential raw materials, a polyol (A) that contains a polyol (a1) having an oxyethylene group, and a polyisocyanate (B), in which the polyol (A) further contains a polyester polyol (a2) containing a biomass-derived glycol (i) and a crystalline polybasic acid (ii) as raw materials, and the polyol (A) has a hydroxyl equivalent in a range of 400 g/eq to 600 g/eq. In addition, the invention provides a moisture-permeable film which is formed of the urethane resin composition.

In the present invention, there is provided an urethane resin composition containing an urethane resin (A), water (B), and a surfactant (C) having no aromatic ring, and having a hydrophobic portion having 10 or more carbon atoms, wherein the urethane resin composition has a carbonate structure (X) and an oxyalkylene structure (Y) derived from the urethane resin (A). Further, the present invention provides a foamed urethane sheet which is formed from the urethane resin composition, wherein the foamed urethane sheet has a density of 200 to 1,000 kg/m.sup.3. The urethane resin composition according to claim 1, wherein the mass ratio of the carbonate structure (X) to the oxyalkylene structure (Y) [X/Y] is in the range of from 10/90 to 90/10.

Isocyanate-reactive compositions, rigid polyurethane foam-forming compositions, rigid polyurethane foams, and methods for their production, and composite articles having a rigid polyurethane foam sandwiched between metal facer substrates. The rigid polyurethane foams are produced from an isocyanate-reactive composition comprising: (1) a polyol blend that includes an amine-initiated polyether polyol; (2) a hydrochlorofluoroolefin (“HCFO”); and (3) a catalyst that includes an arylalkyl tertiary amine, an aryl tertiary amine, or a mixture thereof. The foam can have excellent adhesion to metal substrates.

An object of the present invention is to provide a novel rotaxane and a production method of the same. The present invention provides a rotaxane polyurea having a cyclic molecule and a polyurea chain piercing through the cyclic molecule.

Provided is a latent curing agent, including: porous particles supporting an aluminum chelate compound; and a coating film over surfaces of the porous particles, the coating film containing an aluminum chelate compound and a polymer that contains at least one of a urea bond and an urethane bond, wherein a content of an active aluminum chelate compound is 20% by mass or greater.

The invention relates to a self-healing composition based on at least one elastomer matrix comprising a segment chosen from polysiloxanes, polyesters, polyethers, polycarbonates and polyolefins and a polyurea or polyurethane segment and on at least one polymer material as healing additive, to its process of preparation, to its uses, to an electrical and/or optical cable comprising a layer obtained from said composition, and to a specific healing additive.

A hybrid material contains a matrix of polyurethane and foamed particles of thermoplastic polyurethane contained therein. A process can be used for producing such hybrid materials and these hybrid materials can be used as bicycle saddles, upholstery and shoe soles.

Provided is a laminate containing a first resin composition layer, a heat-resistant film layer, and a second resin composition layer laminated in the presented order, wherein the first resin composition layer is in a semi-cured state (B stage), and a difference between a maximum thickness and a minimum thickness of the first resin composition layer is 0.5 to 5 μm; and the second resin composition layer is in a semi-cured state (B stage), and a difference between a maximum thickness and a minimum thickness of the second resin composition layer is 0.5 to 5 μm.

An object of the present invention is to provide a novel rotaxane and a production method of the same. The present invention provides a rotaxane polyurea having a cyclic molecule and a polyurea chain piercing through the cyclic molecule.

A recyclable polyurethane foam is produced by reacting a carbon dioxide-based polyol-containing composition and an isocyanate composition. The polyurethane foam may include a molar ratio of active hydrogen to isocyanate groups of 1:0.9. The polyurethane foam may include a catalyst at about greater than or equal to about 0.5 to less than or equal to about 1.5 parts by weight percent.