Abstract: The invention relates to a bioreactor for cultivating phototrophic organisms in an aqueous culture medium, the reactor parts that come into contact with the culture medium being entirely or partially produced from silicone materials. The invention is characterized in that the silicone materials are produced from addition-crosslinked silicones, and the surface of the silicone materials has a contact angle to the water of at least 100°.

Abstract: The invention relates to a bioreactor for cultivating phototrophic organisms in an aqueous culture medium. The reactor parts and/or fittings that come into contact with the culture medium are entirely or partially coated with a silicone layer, and the surface of the silicone layer has a contact angle to the water of at least 100°.

Abstract: The invention relates to a tubular photobioreactor that has a core structure in the shape of a truncated cone and one or more transparent or translucent tubes which are helically wound around the outer surface and/or inner surface of the core structure. The tubular photobioreactor is characterized in that the transparent or translucent tube has at least two chambers, through at least one of which the cultivation medium flows and through at least one of which a heat transfer medium flows.

Abstract: A multichamber photobioreactor comprises at least one cultivation chamber and at least one temperature control chamber and is characterized in that at least one outer surface of the cultivation chamber comes in contact with the temperature-controlling medium in such a way that at least 50 percent of at least one outer surface of the cultivation chamber come in contact with the temperature-controlling medium, and in that the components coming in contact with the cultivation medium are made of or coated with silicone materials.

Abstract: The invention relates to a tubular photobioreactor that has a core structure in the shape of a truncated cone and one or more transparent or translucent tubes which are helically wound around the outer surface and/or inner surface of the core structure. Said tubular photobioreactor is characterized in that the transparent or translucent tube has at least two chambers, through at least one of which the cultivation medium flows and through at least one of which a heat transfer medium flows.

Abstract: The invention relates to a bioreactor for cultivating phototrophic organisms in an aqueous culture medium, the reactor parts that come into contact with the culture medium being entirely or partially produced from silicone materials. The invention is characterized in that the silicone materials are produced from addition-crosslinked silicones, and the surface of the silicone materials has a contact angle to the water of at least 100°.

Abstract: The invention relates to a security marking whose level of proof against forgery is greater than that of known security markings, comprising liquid-crystalline material with chiral phase, wherein the security marking is imperceptible to the eye and the properties of the liquid-crystalline material with chiral phase can be detected with the aid of detection systems.

Abstract: The invention relates to a security marking whose level of proof against forgery is increased relative to known security markings, comprising liquid-crystalline material with chiral phase, wherein present within the security marking are at least two liquid-crystalline materials with chiral phase which differ in at least one property selected from the group consisting of handedness, color and color flop and which are arranged in the form of a structured or unstructured marking or a multilayer marking or in the form of liquid-crystalline pigments in a liquid-crystalline matrix, or wherein there is at least one liquid-crystalline material with chiral phase whose reflection band has been broadened by means of special techniques, or wherein there is at least one liquid-crystalline material with chiral phase which has a defined three-dimensional arrangement.

Abstract: The invention relates to mixtures containing pigments which comprise oriented three-dimensionally crosslinked substances having a liquid-crystalline structure with a chiral phase, and to the use of such mixtures. Pigment and matrix are matched to one another in such a way that on application of the mixture at different temperatures to a substrate, the lowest application temperature and highest application temperature differing by at least 10° C. and by not more than 150° C., there are no visually perceptible color differences of the pigmented paint on the substrate after drying.

Abstract: An effect coating material and an effect coating, especially for vehicle bodies, containing interference pigments, in which the interference pigments are composed of three-dimensionally crosslinked, liquid-crystalline, main-chain polymers, which include main-chain mesogens having an at least approximately chiral nematic arrangement, and which are formed from at least one esterified cellulose ether.

Abstract: The present invention discloses coated objects, such as car bodies, as well as coatings for coating such objects. In order to achieve new, hitherto unknown color effects with said coatings, at least some, and preferably only platelet-like interference pigments are mixed into the coating. When the coating is applied, the interference pigments automatically align themselves in a direction approximately parallel to the object surface. These interference pigments are made of liquid crystalline side chain polymers with a nematic and a chiral component, in which the side group mesogens are at least approximately nematic, smectic and/or cholesteric. Particularly intensive tones having a hitherto unknown brilliance may thus be obtained on a coated object, or a shimmering effect depending on the angle of incidence of light and viewing direction.