Abstract: The present invention relates to dental, light-curable, one-component composite compositions comprising (A) monomers, (B) fillers, and (C) initiators, the viscosity ?20 of which at 20° C. is greater than 400 Pa*s, preferably greater than 800 Pa*s and more preferably greater than 1200 Pa*s, and the viscosity ?50 of which at 50° C. is less than 150 Pa*s, preferably less than 120 Pa*s and more preferably less than 90 Pa*s, and wherein the quotient ?50/?20 of the viscosity of the composite composition at 50° C. and the viscosity of the composite composition at 20° C. is less than 0.125, preferably less than 0.1. The invention is preferably directed to dental composite compositions selected from the group consisting of dental filling materials, lining materials, luting materials and fissure sealants.

Abstract: A chip card is protected against copying by having a data memory for storage of data that are protected, at least in a sub-region of the data memory, against alteration by users or attackers outside of a privileged group. Members of this group can write an individual identifier for this chip card into this protected memory region once, and can write a digital signature of this identifier to an arbitrary memory region of the data memory. The digital signature can be generated with the use of a secret key for which an associated public key exists with which it can be checked whether the digital signature was generated from the individual identifier with the use of a secret key.

Abstract: A disposable clothing is used for protection against liquids or microorganisms, in particular for medicine, chemistry or biotechnology. The clothing comprises, in particular a front part and sleeves (20) connected thereto. The clothing (10) is provided with an external layer (12) in the form of a non-woven air-permeable material. A barrier layer which is selected such that it is air permeable but liquid-proof, is applied to at least the side of the external layer (12) which is oriented towards a person wearing the clothing (10). The barrier layer is, at least in places, connected to the external layer. The non-woven material of the external layer (12) is a laminated material comprising spunbond and meltblown layers.

Abstract: A disposable clothing is used for protection against liquids or micro-organisms, in particular for medicine, chemistry or biotechnology. The clothing comprises, in particular a front part and sleeves (20) connected thereto. The clothing (10) is provided with an external layer (12) in the form of a non-woven air-permeable material. A barrier layer which is selected such that it is air permeable but liquid-proof, is applied to at least the side of the external layer (12) which is oriented towards a person wearing the clothing (10). The barrier layer is, at least in places, connected to the external layer. The non-woven material of the external layer (12) is a laminated material comprising spundbond and meltblown layers.

Abstract: Process for the production of foam boards having a minimum thickness of 20 mm and a cross-sectional area of at least 50 cm.sup.2 by extruding a mixture of the styrene polymer, from 1 to 10% by weight, based on the styrene polymer, of a blowing agent, wherein the blowing agent contains at least one ether from the group consisting of dimethyl ether, methyl ethyl ether and methyl vinyl ether.