A method for forming a silicon dioxide film according to the present invention comprises steps of: (i) contacting a substrate with processing solution containing silicofluoric acid solution supersaturated with silicon dioxide, and (ii) forming the silicon dioxide film on the substrate; wherein organic colorants) is/are introduced into the silicon dioxide film by adding organic colorants) to the pr...

A rigid foam, especially a largely closed-cell polyurethane or polyisocyanurate rigid foam, includes a cell structure being formed by the expansion of rigid foam raw materials with carbon dioxide as an inflating agent. The cell structure is substantially homogeneous and has a cell content or substantially CO2 inflating agent and proportions of a physical inflating agent being at least substantiall...

High strength and modulus articles of polyvinyl alcohol are obtained by thermoreversible gelation of a polyvinylalcohol solution, extraction of solvent using a mixture of a lower alcohol or ketone and water, followed by high stretching. Pref. a mixture of 5-80 vol.% of acetone and 95-20 vol.% of water is used as extractant. With this process extraction times of only 3-10 minutes are needed.

PCT No. PCT/FR90/00467 Sec. 371 Date Mar. 18, 1991 Sec. 102(e) Date Mar. 18, 1991 PCT Filed Jun. 26, 1990 PCT Pub. No. WO91/00413 PCT Pub. Date Jan. 10, 1991.A dynamometric measuring device for a drill pipe which includes, firmly attached to the rotating pipe, sensors disposed in a groove on the pipe and electronics for conditioning the signals supplied by the sensors. The measurement signals are ...

Nickel rich amorphous ferromagnetic alloys having a nickel content in the range of 35 to 55 atomic percent have been conceived. These alloys are in the amorphous state and exhibit high permeability relative to prior known amorphous ferromagnetic alloys. These nickel rich alloys can be produced by rapid solidification techniques without the need of subsequent heat treating.; FERROMAGNETIC ALLOYS WI...

Amorphous ferromagnetic alloys having a niobium content in the range of 2.5 to 15 atomic percent have been conceived. These alloys are obtained directly in the amorphous state or as a mixture of amorphous and crystalline places. These alloys have superior properties relative to prior known amorphous and some amorphous alloys. The amorphous ferromagnetic alloys of this invention are .readily produc...

The present invention relates to biological purification of waste waters. Methanol-containing waste waters are subjected to neutralization by means of orthophosphoric acid, enrichment with sources of nitrogen, whereafter the strain Methylomonas metanica B-2576 deposited at the Central Museum of Industrial Microorganisms of the All-Union Research Institute of Genetics and Selection of Industrial Mi...

CHEMICAL ADDITIVE FOR HYDRAULIC CEMENT MIXES A hydraulic cement mix comprising a hydraulic cement, aggregate in an amount of up to 80% by weight based upon the total weight of said cement mix, sufficient water to effect hydraulic setting of the cement, and an air-entraining additive consisting essentially of a coconut fatty acid diethanolamine produced by reacting alkyl ester of coconut acid with ...

A method for connecting ends of a weather strip made of a rubber material and composed of a base portion and a tubular sealing portion having two chambers which are separated by a rib, includes the steps of inserting each of both ends of a core, which have such a cross-sectional shape as to fill an outward chamber of the two chambers of the tubular sealing portion and press the rib on the base por...

The invention relates to a liner for ladies' panties, consisting of a fluid-impermeable lower ply (1), an absorbent middle ply (2) and a fluid-permeable upper ply (3). According to the invention, the liner exhibits at least one longitudinal fold (7) which allows an adaptation of the width of the insert to the width of the crotch part (6) of the ladies' panties. The longitudinal fold (7) can be arr...

Azeotrope-like compositions comprising pentafluoroethane; 1,1,1-trifluoroethane; and chlorodifluoromethane are stable and have utility as refrigerants for heating and cooling.

An apparatus for storing and reading a magnetooptical disk has a slit shaped aperture located in an air-bearing slider which flies above the disk. Domains of the disk are selected for storing or reading by a light beam. The domains are reduced in size without losing inter-domain resolution by illuminating the disk with the portion of a focused laser beam incident on the disk through the slit, the ...

PCT No. PCT/US90/03684 Sec. 371 Date Dec. 30, 1991 Sec. 102(e) Date Dec. 30, 1991 PCT Filed Jun. 28, 1990 PCT Pub. No. WO91/00752 PCT Pub. Date Jan. 24, 1991.Balloon tamponade devices for treating bleeding sites within the upper digestive tract (e.g. esophageal or upper gastric bleeding sites, or duodenal, pyloric or distal gastric bleeding sites) comprise a tube having proximal and distal open en...

An aqueous dispersion of silicone and of an organic polymer latex, crosslinking to an elastomer on removal of water, comprising: - 100 parts of an emulsion (A) of the oil-in-water type of an alpha , omega -(dihydroxy)polydiorganosiloxane, stabilised with an anionic and/or nonionic surfactant, - 2 to 80 parts of an aqueous dispersion (latex) of an organic (co)polymer, - 0.1 to 100 parts of a c...

The present invention relates to a catheterization system which incorporates impregnating a pharmaceutical into a catheter by contacting the catheter with a volatile solvent or swelling agent at or near supercritical conditions of the swelling agent with a mixture of the pharmaceutical and the swelling agent. The catheter is capable of providing prolonged protection of localized tissue areas.

In the continuous production of mineral wool nonwoven fabrics, fiber/gas/air mixtures (3, 4) produced by several shredding units (14 to 17) are directed onto collecting conveyor units (19, 21) with suction surfaces (c, d) running in a curve and being under suction pressure for the formation of a wool nonwoven fabric (25). In this case the arrangement is such that an imaginary suction surface, incr...

A mutant enzyme is provided which exhibits reduced stability under industrial application conditions. As an example mutant bacterial alpha -amylase is provided which has reduced thermostability during baking conditions. This modified alpha -amylase can be suitably used for improving both loaf volume and crumb softness of bread products without causing any danger of overdextrination.

A resilient annular earseal (62) for sealing the region between an earcup shell (12) and a wearer's head is formed with an aperture for receiving the wearer's ear and has an outer peripheral portion (64) projecting a predetermined first distance toward the wearer's head and an inner peripheral portion (65) projecting a predetermined second distance toward the wearer's head that is appreciably grea...

A collection process for collecting mineral wool fibers produced by an aligned plurality of fiber making machines includes the steps of entraining the fibers produced by each of the fiber making machines in a gas, drawing the gas through a gas permeable conveyor belt substantially aligned with the aligned plurality of fiber making machines so as to collect the fibers on a fiber/gas separating surf...

The invention relates to the reception of fibers under fibering machines to obtain a mat of mineral wool. It proposes assigning to each fibering machine its own collecting zone, the surfaces of the collecting zones increasing in the direction of the increase of base weight. The invention also proposes a device characterized by the presence of two reception drums for three fibering machines.