This invention relates to a preparation for a polyurethane foam and a polymer polyol preparation for a polyurethane foam, each of which exhibits high coloration and discoloration inhibition properties over a long period of time when stored, and to a composition for a polyurethane foam, which is excellent in storage stability and is preferable as a resin premix. The composition comprises (i) at least one polyol, (ii) a compound having a PN bond, (iii) an antioxidant having a hydroxyphenyl group, (iv) at least an acid and/or its salt, (v) a catalyst for polyurethane foam production and (vi) a blowing agent.

Provided is a polyamide foam molded body and method for manufacturing the same. The method includes performing polymerization with a monomer composition to form a polyamide terpolymer; mixing a supercritical carbon dioxide foaming agent and the polyamide terpolymer under a pressure to form a mixture; and releasing the pressure of the mixture to foam the polyamide terpolymer for forming the polyamide foam molded body. The monomer composition comprises 50 to 70 mole % of a caprolactam, 4 to 15 mole % of a polyetheramine, 4 to 15 mole % of a dicarboxylic acid and 15 to 30 mole % of a Nylon salt. The polyamide terpolymer includes a hard segment formed by the caprolactam, the dicarboxylic acid and the Nylon salt and a soft segment formed by the polyetheramine. The polyamide foam molded body exhibits excellent properties and is environmental-friendly.

Components for articles of footwear and athletic equipment including a foam are provided. The foam portion of the components and articles include a composition which includes a thermoplastic copolyester, the composition having a foam structure. A polymer layer is provided on at least on surface of the foam portion. The polymer layer can control or reduce the water uptake of the foam portion. Methods of making the compositions, foams, and components are provided, as well as methods of making an article of footwear including one of the foam components. In some aspects, the foams and foam components can be made by injection molding, or injection molding followed by compression molding.

A system including an injector, a press, and a robotic conveyance is used to form a physically foamed article of footwear component from a single-phase solution of a polymeric composition and a supercritical fluid. The parameters and features of the system are configured for the formation of the footwear component in an automated manner with enhanced throughput by the system.

A surfactant and a method of forming the surfactant having the formula (I) where a is an integer from 1 to 10, b is an integer from 0 to 10, R.sub.1 is CH.sub.3 or H, n is an integer from 0 to 20, and R.sub.2 is a moiety selected from the group consisting of (II), (III), (IV), (V), (VI), (VII) or (VIII) where m is an integer from 0 to 4. The surfactant can be used in a method for preparing a rigid polyurethane foam. ##STR00001##

The present invention relates to the field of foamable compositions having an ethylene-based co-polymer containing a carbon monoxide co-monomer.

A foamed molded article of a liquid crystalline aromatic polyester resin composition is described. The foamed molded article includes an inner layer and an outer layer: the inner layer is a foamed layer, the outer layer is a non-foamed layer, and a weight reduction rate represented by the following formula (1) is 20% or more and 90% or less,

weight reduction rate (%)=100(dBdA)/dB(1)

In formula (1), dB represents a true density (g/cm.sup.3) of the liquid crystalline aromatic polyester resin composition and dA represents an apparent density (g/cm.sup.3) of the foamed molded article.

A method produces porous materials by expansion of polymer gels. The porous materials can be a micro- or nano-porous polymer materials.

A method of preparation of a cardo polyetherketone structural foam material, including the following steps: 1) performing a mould pressing on a cardo polyetherketone resin by a high-temperature vulcanizing machine to prepare a foaming billet; 2) placing the foaming billet in a foaming cavity of a mould-pressing machine, performing a penetration and a swelling by introducing a supercritical fluid to achieve diffusion equilibrium, forming a polymer-supercritical fluid homogeneous solution, and 3) making the polymer-supercritical fluid homogeneous solution supersaturated through a sudden release of the inner pressure of the system, thereby inducing nucleation and foaming, and finally forming a structural foam having a closed pore structure with a uniform pore size and an adjustable pore density. The production process of the present invention is clean, environmentally friendly, and has relatively high efficiency. The obtained structural foam has good mechanical properties.

An improved process for fabricating expanded thermoplastic polymers (eTP) starting from non-expanded TP is disclosed whereby said process has improved thermal control, uses preferably environmentally friendly foaming gasses, avoids anisotropy and sticking of the eTP during the processing and minimises the duration of the charging step.