Abstract:
A biocompatible controlled release form of complexed iodine is achieved by a complexation of polyvinyl alcohol based foam and characterized by a residual starch component to optimize iodine release profiles. The resulting iodine complexed polyvinyl alcohol foam may be utilized locally as an antimicrobial agent that releases controlled amounts of iodine sufficient to kill microbes for extended durations without excessive bulk and rigidity.
Abstract:
Polyurethane foams which are highly flame resistant are described, as well as the production of such polyurethane foams by the reaction between a natural polyol, such as sucrose or a blend of mono- or disaccharides in place of the standard hydrocarbon-based polyol component, a polyisocyanate and water in the presence of a suitable polyurethane forming catalyst and a flame retardant, and optionally one or more components such as surfactants and/or emulsifiers. The resultant polyurethane foam has a bio-based solid content ranging from about 17% to 30%, may be formulated in a variety of foam densities for a variety of applications, and exhibits a high degree of fire and burn resistance, as exhibited by the flame spread index and the smoke spread values.
Abstract:
A foam material made from an organic fiber mixed with water and a polyurethane glue wherein after the mixture solidifies it creates the foam material. The foam material is made by a process comprising the steps of accumulating the organic fiber, grinding the organic fiber into a fibrous material, adding water to the fibrous material to create a slurry, adding the polyurethane glue to the slurry to create a glue mixture, allowing the glue mixture to expand, and allowing the glue mixture to solidify and create the foam material.
Abstract:
Provided are a composition for preparing expandable polypropylene carbonate and an expandable polypropylene carbonate prepared therefrom, and more particularly, to a composition for preparing expandable polypropylene carbonate capable of using supercritical carbon dioxide as a foaming agent and producing a foam having excellent moldability by using an appropriate foaming method. By using the composition according to the present invention, highly magnificated expandable polypropylene carbonate capable of having excellent thermal stability and dimensional stability can be prepared.
Abstract:
Provided are methods for making textured implantable materials made from two part RTV silicone foams and having a desired color or tone without the need for dyes or colorants.
Abstract:
A resilient foam material having an active antimicrobial bound to, incorporated within, and projecting from its surface is provided for incapacitating or destroying microbes. The antimicrobial has an atomic structure that is capable of mechanically piercing or lysing a microbe thereby incapacitating or destroying the microbe. The resilient antimicrobial foam material may be manufactured into a resilient antimicrobial foam product for drawing across a surface and mechanically incapacitating or destroying microbes on the surface. The resilient antimicrobial foam material may be manufactured into a membrane for providing a sterile barrier for a surface. The resilient antimicrobial foam material is manufactured by combining the antimicrobial with a foam polymer material, heating the foam polymer material under pressure to a temperate that does not deactivate the antimicrobial, incorporating a blowing agent, cooling the material, and extruding the material.
Abstract:
Disclosed is a resin foam which excels in properties such as strength, flexibility, cushioning properties, and strain recovery, particularly has a cell structure resistant to shrinkage caused by the restoring force of the resin, and has a high expansion ratio.The cross-linked resin foam is obtained by heating a resin composition containing an elastomer, an active-energy-ray-curable compound, and a thermal crosslinking agent to form a cross-linked structure derived from the thermal crosslinking agent in the resin composition; subjecting the cross-linked-structure-containing resin composition to foam molding to give a foamed structure; and irradiating the foamed structure with an active energy ray to form another cross-linked structure derived from the active-energy-ray-curable compound to give the cross-linked resin foam.
Abstract:
Objective problems of the present invention are: to provide a sealing material which does not involve flowing after applied, and shows an excellent sealing performance even under severe heat resistance conditions, and also can make good independent cells inside even when used in a foamed condition; and to provide a method of foaming application of the sealing material. As means of solving these objective problems, the sealing material according to the present invention is characterized by comprising an ultraviolet-curable component and an ultraviolet polymerization initiator and having a thermoplastic elastomer (which is not ultraviolet-curable) content of not higher than 5 weight % and comprising an acrylate as the ultraviolet-curable component and having a melt-viscosity at 120° C. in a certain range wherein the acrylate has a glass transition temperature after ultraviolet curing and a weight-average molecular weight in their respective certain ranges; and the method according to the present invention of foaming application of a sealing material is characterized by comprising the steps of: hot-melting the sealing material; mixing nitrogen gas into the melted sealing material under a predefined pressurization; discharging the resultant mixture at a predefined pressure into the air to thus foam the mixture and simultaneously apply it to a place necessary to seal, thus making a sealing foam; and curing this sealing foam by ultraviolet rays.
Abstract:
A foamed composition adapted to seal to a substrate is provided. The foamed composition includes a radiation curable rubber, a photoinitiator, a blowing agent, a styrene-ethylene/butylene block copolymer, a light mineral oil, rheology modifier, a tackifier, and one of a radiation curable monomer and radiation curable oligomer, and wherein the composition is foamed upon application to the substrate.
Abstract:
A crosslinked polyolefin-based resin foam according to the present invention comprises a polyolefin-based resin containing 20 to 60% by weight of a polyethylene-based resin, and the crosslinked polyolefin-based resin foam has the melting energy of 28 to 50 mJ/mg at 140null C. or more contained in the melting energy per unit weight (calorific value obtained from the area of its melting peak in differential scanning calorimetry/weight).