A polymer composition may include an ethylene vinyl acetate (EVA) polymer at an amount ranging from 10 to 90 phr; an elastomeric EVA composition at an amount ranging from 10 to 90 phr; a plasticizer at an amount ranging from 5 to 40 phr; a blowing agent in an amount ranging from 2 to 10 phr; and a peroxide in an amount ranging from 0.3 to 4 phr.

Embodiments of the present disclosure relate to a magnetic body support product, such as a foam mattress topper or a foam pillow, having a plurality of magnets encapsulated therein. In one embodiment, the magnetic body support product includes a first foam layer, a second foam layer secured to the first foam layer, and a plurality of flexible magnetic materials encapsulated by the first foam layer and the second foam layer. The flexible magnets provide health benefits to a user laying on the magnetic. The first foam layer and the second foam layer enable the user to lay on either side of the magnetic body support product without feeling the plurality of magnetic materials.

To provide a catalyst composition to obtain a flexible polyurethane foam from which substantially no amine compound is discharged and which has sufficient resistance to compressive strain, and a method for producing a flexible polyurethane foam using the catalyst composition. A polyurethane foam is produced by using a catalyst composition for producing a polyurethane foam, which comprises an amine compound represented by the following formula (1) and at least one glycol selected from the group consisting of ethylene glycol and polyethylene glycol, provided that when the compound of the formula (1) has enantiomers, diastereomers or geometric isomers, both a mixture thereof and isolated isomers are included: ##STR00001##
wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each independently a hydrogen atom, a C.sub.1-4 alkyl group, a hydroxy group, a hydroxymethyl group or a C.sub.1-4 alkoxy group, and m is an integer of 1 or 2.

The present disclosure relates to a three-dimensionally (3D) printed tissue engineering scaffold for tissue regeneration and a method for manufacturing the 3D printed tissue engineering scaffold. The 3D printed tissue engineering scaffold may be fabricated at least in part from a composite material having an insoluble component and soluble component. The three-dimensional tissue scaffolds of the disclosure may be fabricated via a rapid prototyping machine. In some instances, the three-dimensional shape of the fabricated tissue engineering scaffold may correspond to a three-dimensional shape of a tissue defect of a patient.

Recovery times and/or airflow of flexible polyurethane foam is increased by including certain tackifiers in the foam formulation. The tackifiers are formed into an emulsion that includes a polyether containing oxyethylene groups, a nonionic surfactant and certain fumed silica, carbon black or talc particles.

A polyurethane catalyst comprises a sodium compound, the sodium compound being 1 to 60 wt % of the polyurethane catalyst by the mass percent, and further comprises a tertiary amine and/or pyridine compound. The sodium compound and the tertiary amine and/or pyridine compound achieve a synergistic effect; during the catalysis of the polymerization of isocyanate and polyalcohol, the speed of the polymerization reaction is increased; and the prepared polyurethane material has excellent physical properties, does not contain any heavy metal element at all, is an environment-friendly catalyst, solves the technical problem of ensuring environmental protection, safety and the catalytic efficiency of the polyurethane catalyst, and is particularly applicable to the preparation of polyurethane synthetic leather resin slurry, a polyurethane elastomer (prepolymer), a polyurethane coating, a polyurethane adhesive, a polyurethane composite material, flexible polyurethane foam, and a rigid polyurethane material.

Recovery time and/or airflow of flexible polyurethane foam is increased by including certain tackifiers in the foam formulation. The tackifiers are characterized in being incompatible with polyol or polyol mixture used to make the foam, having a viscosity of at least 10,000 centipoise at 25 C., having a glass transition temperature of at most 15 C. and being inert to other components of the foam formulation.

Organosilicon polymer foams are synthesized using a Carboni-Lindsey reaction of a tetrazine with a siloxane polymer having at least one of alkenyl or alkynyl functional groups. Optionally, the reaction may also comprise a second polymer having at least one of alkenyl or alkynyl functional groups. The organosilicon polymer foams may be crosslinked thermoset foams. The foams may be flexible or rubbery.

A foaming process for converting fibrous material into a cellular foam structure includes mixing fibrous material and a solvent-based binding agent to form a mixture; saturating the mixture with a pressurized gas to form a gas-saturated mixture; expanding the gas-saturated mixture by reducing the pressure of the pressurized gas to form an expanded mixture with voids in the fibrous material; and curing the expanded mixture to set the fibrous material and drive off the solvent to provide a stable network of fibrous material having cushioning properties.

Recovery times of flexible polyurethane foams are increased by treatment with a pressure sensitive adhesive. An emulsion or dispersion of the adhesive in an aqueous carrier liquid is impregnated into the foam, with subsequent removal of the carrier. This invention is of special interest when the glass transition temperature of the starting foam is 16 C. or lower.