Microcellular polyurethane elastomers having nonpeelable skin surfaces having densities ranging from 0.1-1.1 gm/cm<3> can be made from conventionally employed reactants using carbon diioxide gas as the sole source of blowing agent resulting from the H2O/-NCO reaction when carried out in an admixture with nonhydratable particulate inorganic salts.

A method for the preparation of rigid foams by reacting an organic polyisocyanate with an isocyanate-reactive material in the presence of a blowing promoter characterised in that the isocyanate-reactive material comprises at least one isocyanate-reactive cyclic carbonate or isocyanate-reactive cyclic urea, the reaction being performed in the presence of an inert insoluble organic liquid which is p...

E 36177 MANUFACTURE OF CELLULAR ELASTOMERS AND CHEMICAL COMPOSITIONS USED THEREFOR A method for the preparation of cellular polymeric products which comprises reacting an organic polyisocyanate with an isocyanate-reactive composition, characterised in that the isocyanate-reactive composition comprises a blowing promoter which is a cyclic urea compound having at least one isocyanatereactive substit...

PURPOSE:To stabilize a plasma state and to obtain a high-quality superconducting film with good reproducibility by maintaining the specified ejection position of gaseous oxygen with respect to an annular electrode of the above method by using a laser abrasion method. CONSTITUTION:The annular electrode 13 is so disposed as to extend in parallel from the surface of a target 11 and to exist around th...

PURPOSE:To prevent the contamination of a window and to stably obtain a film having prescribed characteristics for a long period of time by blowing gas to the inner side of the window which is provided in a vacuum chamber and allows the passage of a laser beam in the film forming method using laser abrasion. CONSTITUTION:A target 3 in the vacuum chamber 2 of a laser abrasion device 1, in which cha...

PURPOSE:To obtain the good-quality thin film which is crystallized without increasing the temp. of a base material to a high temp. by using a laser beam for heating the base material in the above method by a laser abrasion method. CONSTITUTION:The target 2 contg. the components of the oxide superconducting film is irradiated with the laser beam 1 for abrasion and the particles splashed from the ta...

PURPOSE:To obtain superconductive film having good flatness and homogeneity at a relatively low growth temp. by supplying an oxidizing agent in a plasma CVD method using a halide as a raw material. CONSTITUTION:The raw material mounted in a source boat 7 in a cell 6 is heated by a cell heater 8 and the evaporated raw material is transported by a carrier gas and is supplied as the gaseous raw mater...

PURPOSE:To enable the adequate formation of an oxide superconducting thin film continuously over a long period of time by using laser abrasion. CONSTITUTION:A target 10 of powder put into a container 7 opened at the front surface is used and while the surface 12 of the target 10 is maintained smooth by applying vibrations 11 to the target 10 consisting of such powder, the surface 12 of the target ...

PURPOSE:To obtain a superconductor having high critical current density by applying, after heat treatment, a compressive load to a powdered raw material for specific Tl-based oxide superconductor and further applying heat treatment to the powdered raw material. CONSTITUTION:First a powdered raw material for producing a thallium type oxide superconductor having a composition of Tl-Bi-Ca-Sy-Cu-O or ...

PURPOSE:To surely obtain Tl-based oxide superconductors whose critical temp. are regulated to values in the desired ranges, respectively, in respective compositions by specifying heat treatment conditions in the manufacturing process and also performing rapid cooling. CONSTITUTION:A mixed raw material in which metallic elements constituting a Tl type oxide superconductor are mixed in the prescribe...

PURPOSE:To improve the stability of a thick film by providing the surface of a substrate with a multiple oxide intermediate layer of Ba and Zr and thereafter forming the thick film of an oxide superconductor having a compsn. in a specified formula or its mixture with Ag thereon. CONSTITUTION:The surface of a ZrO2 substrate 1 contg. stabilized ZrO2 is coated with an organic barium compound such as ...

PURPOSE:To manufacture a synthetic diamond thin film having high purity and high crystalline properties for a photoelement or a semiconductor device. CONSTITUTION:A raw material gas 35 selected from CO/O2/H2, CH4/O2/H2, CO/CO2/H2, CO/CO2/O2/H2, CO/CH4/O2/H2, CH4/CO2/H2 and CH4/CO2/O2/H2 is decomposed by an electromagnetic wave 36 into plasma 34 to form a synthetic diamond thin film on a substrate ...

PURPOSE:To manufacture big single crystals of YBa2Cu3Ox (x:6.5 to 7). CONSTITUTION:An YBa2Cu3Ox (x:6.5 to 7) superconductor compsn., Ba-Cu-0 series flux or CuO flux and MCl (M:Na, K and Rb) are mixed, and this mixture is melted and is thereafter cooled. Instead of the above compsn., a raw material for the compsn. can be used.

PURPOSE:To efficiently execute film forming and to permit the formation of a dense oxide superconducting thin film having higher current density in the method for manufacturing an oxide superconducting thin film using laser ablation. CONSTITUTION:A target 7 having <=10% porosity is irradiated with a laser beam 8 to generate ablation in the irradiated part of te laser beam 8, by which grains splash...

PURPOSE:To treat the surface of water absorbing resin having excellent water absorbing property under pressure, water retaining property under pressure and liquid passing property. CONSTITUTION:100 pts.wt. water-absorbing resin powder having carboxylic group is blended with 0.01-20 pts.wt. crosslinking agent, 0-50 pts.wt. water and 0-60 pts.wt. hydrophilic organic solvent using a turbulizer 1 (hig...

PURPOSE:To obtain surface treatment of water absorbing resin effective for providing a water absorbing agent having water absorbing rate under high pressure, water passage under pressure and water retention under pressure. CONSTITUTION:100 pts.wt. carboxyl group-containing water absorbing resin powder is blended with 0.01-30 pts.wt. polyhydric alcohol, 0-50 pts.wt. water and 0-60 pts.wt. hydrophil...

PURPOSE:To obtain a granulated material absorbing a large amount of aqueous liquid, having a high expanding ratio, maintaining granulated structure during liquid absorption and having stability to liquid. CONSTITUTION:100 pts.wt. water absorbing resin powder is blended with 0.01-30 pts.wt. crosslinking agent, 0-50 pts.wt. water and 0-60 pts.wt. hydrophilic solvent in a high-speed stirring type mix...