Abstract: A method for a continuous production of filters, particularly coffee filters and the like, from a material web, including the steps of (a) cutting parallel in reference to the direction of transportation of the material web to separate at least two rows of filter contours extending parallel in reference to the direction of transportation of the material web into one partial material web each, and (b) separating the filters of the respective partial material webs. The cutting to separate at least two rows into one partial material web each occurs essentially based on a cut with a wave-like progression. At least two partial material webs are arranged over top of each other such that a separation of the filters of the respective partial material webs occurs by a joint cut. A device for a continuous production of filters is also provided.

Abstract: This invention relates to metal complex compositions, their preparation and their use as catalysts to produce polymers of conjugate dienes through polymerization of conjugated diene monomers. The used metal complex compositions are transition metal compounds in combination with an activator compound, optionally with a transition metal halide compound and optionally a catalyst modifier and optionally an inorganic or organic support material. The metal complexes comprises metals of group 3 to 10 of the Periodic System of the Elements in combination with activators, and optionally transition metal halide compounds of groups 3 to 10 of the Periodic Table of the Elements including lanthanide metals and actinide metals and optionally, catalyst modifiers, especially Lewis acids and optionally an inorganic or organic support material.

Abstract: The invention covers a process to manufacture biodegradable starch esters which can be processed into extrudates, formed parts and sheeting. The starch is activated with a carboxylic acid/carboxylic anhydride mixture through partial swelling and the onsetting esterification reaction at simultaneous conversion of the water entrained in the starch and partially esterified with a carboxylic anhydride up to the desired degree of substitution with progressing swelling and disintegration.