Abstract: The invention discloses a device for viscosity or viscoelasticity measurement comprising: a horizontal rotatable cylinder-shaped section for receiving a liquid whose viscosity or viscoelasticity is to be measured, and a torque meter for measuring the torque from said liquid while in rotation. It also discloses a method of measuring viscosity or viscoelasticity of a liquid comprising the following steps: placing a liquid into a horizontal rotatable cylinder-shaped section, said liquid partially filling said structure; rotating said structure at a speed such that a quasi-cylindrical inner free surface of the liquid is obtained; determining the torque from said liquid when rotating said partially filled structure and calculating the viscosity or viscoelasticity of the liquid from the torque determined in the previous step.

Abstract: A method of making a medical implant is provided by electrospinning a polymer solution to form a preform around a mandrel. The formed preform distinguishes an inner surface and an outer surface. The formed preform is removed from the mandrel and flipped inside-out resulting in the inner surface of the formed preform becoming the outer surface of the inside-out flipped preform, and the outer surface of the formed preform becoming the inner surface of the inside-out flipped preform. At least part of the inside-out flipped preform forms the medical implant such as e.g. an artificial heart valve, an artificial leaflet, an artificial graft, or an artificial vessel. The products made according to the method of this invention greatly improve the performance and durability of the medical implant.

Abstract: The present disclosure relates to a device for viscosity or viscoelasticity measurement comprising: a structure comprising a horizontal rotatable cylinder-shaped section for receiving a liquid whose viscosity or viscoelasticity is to be measured; a light source arranged for emitting light onto the liquid surface in rotation within said structure; an optical focusing screen arranged at an end of said cylinder-shaped section; an optical sensor for detecting a light spot, emitted by the light source and reflected by the liquid surface in rotation within the structure, impinging on the optical focusing screen; an electronic data processor arranged for calculating the viscosity or viscoelasticity of the liquid from the location of said light spot on said optical focusing screen. The present disclosure also relates to a method of manufacture of the device and a method for measuring viscosity or viscoelasticity of a liquid.

Abstract: Methods and the resulting structures, like valve devices (e.g. heart or vessel) are provided made by electrospinning single shapes on mandrels with complex surface shapes. These single shapes are then shaped into valves with a plurality of leaflets. Three levels of complexity of shapes are described: 1) conical shapes, 2) a combination of conical and cylindrical shapes, and 3) a conical and/or cylindrical shape which has further complexity by one or more three-dimensional shapes. Heart valves resulting from these complex electrospun shaped mandrels have better mobility dynamics compared to heart valves electrospun on solely cylindrical mandrels.

Abstract: A method of making a medical implant is provided by electrospinning a polymer solution to form a preform around a mandrel. The formed preform distinguishes an inner surface and an outer surface. The formed preform is removed from the mandrel and flipped inside-out resulting in the inner surface of the formed preform becoming the outer surface of the inside-out flipped preform, and the outer surface of the formed preform becoming the inner surface of the inside-out flipped preform. At least part of the inside-out flipped preform forms the medical implant such as e.g. an artificial heart valve, an artificial leaflet, an artificial graft, or an artificial vessel. The products made according to the method of this invention greatly improve the performance and durability of the medical implant.

Abstract: The invention relates to an electrodeposited metal layer on a substrate with embedded particles, especially inorganic particles, which have a silicate coating, and to the use of such layer for coating machine parts.

Abstract: The present invention relates to a chemical nickel bath containing precious metal ions, a process for preparing a chemically deposited nickel coat containing a precious metal, the thus produced nickel coat, and the use thereof.

Abstract: The invention relates to an electrodeposited metal layer on a substrate with embedded particles, especially inorganic particles, which have a silicate coating, and to the use of such layer for coating machine parts.

Abstract: The invention is a polymer composition and a method of preparing same, wherein the polymer composition comprises at least one perchlorate and at least one organic solvent. The polymer composition is preferably for use with halogen-containing polymers.

Abstract: The present invention relates to stabilizer compositions for halogenated polymers, containing perchlorates and lead compounds, to polymer compositions containing said stabilizer compositions as well as to moulded articles that can be produced by using the described stabilizer compositions or polymer compositions.

Abstract: The invention relates to a metallic valve, characterized in that the valve disk and/or the valve seat has a ceramic coating with a layer thickness within a range of from 10 to 1000 nm.

Abstract: A stabiliser composition for foams of halogen-containing polymers, comprising from 0.01 to about 50% by weight of at least one salt of a halogen-containing oxyacid and from 0.5 to about 50% by weight of at least one blowing agent, both based on the total weight of the stabiliser composition.

Abstract: Recycled mixtures of plastics, predominantly thermoplastics, as predominantly produced in the household, in commerce and also in industry and useful material collections, can be stabilized against thermooxidative degradation by adding a combination of a sterically hindered phenol with an organic phosphite or phosphonite and an inorganic compound from the series consisting of metal oxides, hydroxides and carbonates.

Abstract: Recycled plastics, predominandy thermoplastics, from domestic, commercial and industrial waste can be stabilized against thermooxidative degradation by adding a combination of a sterically hindered phenol with an organic phosphite or phosphonite and a metal salt of a fatty acid.

Abstract: Recycled plastics, predominanty thermoplastics, from domestic, commercial and industrial waste can be stabilized against thermooxidative degradation by adding a combination of a sterically hindered phenol with an organic phosphite or phosphonite and a metal salt of a fatty acid.

Abstract: Use of a di- or polysaccharide alcohol and an inorganic or organic zinc, aluminum or rare-earth compound allows a high degree of stabilization of a halogen-containing polymer or polymer recyclate.

Abstract: A high degree of stabilization of polyvinyl chloride is achieved by using a perchlorate, a terminal epoxide compound and an antioxidant.

Abstract: Preparation of 5- and 6-halo-2-mercaptobenzoxazoles or the sodium and potassium salts thereof by reaction of corresponding 4- or 5-halo-2-aminophenols with sodium or potassium lower alkyl xanthates in heterogeneous phase.

Abstract: This invention relates to an improvement in a photopolymerizable mixture which contains, as the essential constituents, (a) a polymeric binder, (b) a photoinitiator, and (c) a polyester of an .alpha.,.alpha.'-bis-methylene-dicarboxylic acid and a dihydroxy compound.

Abstract: This invention relates to an improvement in a mixture which is polymerizable by radiation and contains, as the essential constituents, (a) a polymeric binder, (b) a polymerization initiator which can be activated by radiation, and (c) a compound of the formula I ##STR1## in which R.sub.1 is a divalent aliphatic group having 1 to 15 carbon atoms which also can be partially replaced by hetero-atoms, a divalent cycloaliphatic group having 3 to 15 carbon atoms, or a mixed aliphatic-aromatic group having 7 to 15 carbon atoms, and A is an electron-attracting radical. The invention also relates to a radiation-sensitive resist material using the improved radiation-polymerizable mixture.