Abstract:
Verfahren zur Herstellung eines atmungsaktiven Films auf Basis von Polyvinylchlorid (PVC), umfassend die Schritte: 1. Bereitstellen einer pastösen Masse, umfassend eine erste Fraktion aus PVC und eine zweite Fraktion aus einem Fremdstoff und eine dritte Fraktion aus Hilfs- und Zusatzstoffen, die miteinander zu der pastösen Masse vermischt werden, 2. Aufbringen der pastösen Masse auf eine Unterlage, 3. Trocknen und Ausgelieren der auf die Unterlage aufgebrachten pastösen Masse unter Wärmezufuhr zu dem Film, wobei von der einen zur anderen Oberfläche des Filmes verlaufende Poren gebildet werden, die dem Film Atmungsaktivität verleihen.
Abstract:
Disclosed is a process for production of a colored polyimide molded article including the steps of molding a polyamic acid solution composition containing a polyamic acid solution obtained from at least a tetracarboxylic acid component and a diamine component and a coloring precursor, or a polyimide solution composition containing a polyimide solution and a coloring precursor; and then thermally treating a molded product at 250°C or higher.
Abstract:
The present invention is core-shell polymer particles comprising a common binder polymer for the core and the shell wherein the core has a porosity and the shell is non-porous The particles have a porosity from 10 to 70 percent.
Abstract:
The present invention is a method for the preparation of porous particles that includes dissolving a polymer material in a first organic solvent and adding a second organic solvent and nonionic organic polymer particles to form an organic phase. The organic phase is dispersed in an aqueous phase that includes a particulate stabilizer to form a dispersion and the dispersion is homogenized. The first and second organic solvents are evaporated and the product is recovered.
Abstract:
Process for making polyisocyanate based aerogels by trimerisation of an organic polyisocyanate in an organic solvent in the presence of a (co)polymer containing an isocyanate-reactive group, gellation and supercritically drying of the obtained sol-gel.
Abstract:
A method for producing closed cell polymer foam layers is characterized in that an emulsion which can be spread or smoothed out is produced from a solution of one or more polymers in one or more organic solution medium(s) in the form of a coherent exterior Phase A and a liquid which is to be evaporated in the form of a dispersed inner Phase B. The solution medium or the solution medium mixture of Phase A contains a higher level of liquidity than that of Phase B.
Abstract:
A method for producing closed cell polymer foam layers is characterized in that an emulsion which can be spread or smoothed out is produced from a solution of one or more polymers in one or more organic solution medium(s) in the form of a coherent exterior Phase A and a liquid which is to be evaporated in the form of a dispersed inner Phase B. The solution medium or the solution medium mixture of Phase A contains a higher level of liquidity than that of Phase B.