2132843 9319058 PCTABS00025 Disclosed is a method for producing cyclic esters by the conversion of hydroxy carboxylic acids and their derivatives to their respective cyclic esters. Such cyclic esters, including lactide or glycolide, are particularly useful for producing polymers which can be used to make biodegradable materials, such as biodegradable packaging material. Various methods of cyclic e...

PCT No. PCT/SE90/00850 Sec. 371 Date Jun. 16, 1992 Sec. 102(e) Date Jun. 16, 1992 PCT Filed Dec. 19, 1990 PCT Pub. No. WO91/09608 PCT Pub. Date Jul. 11, 1991.A pharmaceutical preparation for controlling pathogenic microorganisms causing diarrhoea and other gastrointestinal troubles in man and in animals contains Streptococcus lactis strain LIa in at least one pharmaceutically acceptable carrier me...

A unique quick connect fluid coupling (20) is disclosed in which a tube inner end (36) does not contact a seal (42) if the tube (22) is not partially connected. Preferably, a retainer (30) retains the tube (22) within a bore (46) in a housing (24). The retainer (30) is of the avalanche type such that a high force is required to insert the tube (22), and once this high force is overcome the momentu...

PURPOSE:To prepare a superconductive ceramic easily and inexpensively by prepg. an integrated product comprising elements of the group IIIa and IIa, and metal, oxide, or carbonate of Cu, then impressing magnetic field at the same time when the integrated product is calcined. CONSTITUTION:Each at least one element of the group IIIa and IIa, and metal, oxide or carbonate of Cu are mixed as starting ...

A foamable composition for preparing inorganic light weight foam includes an inorganic powder and vinyl chloride-based resin as main components, and an organic solvent and a foaming agent. The vinyl chloride-based resin is a higher molecular weight resin made by suspension-polymerization or mass-polymerization, and has an average degree of polymerization ( &upbar& p) of 1300 to 10000 as defined by...

PURPOSE:To obtain an Al stabilized superconductive wire material by supplying a copper or copper alloy covered superconductive wire whose surface is cleaned into an Al pipe whose inside is displaced with Al gas and decreasing the surface after cooling into a room temperature, and cold working it as a surface decreasing rate of above 40% after processing at 150-450 deg.C for 0.25-30 hours. CONSTITU...

PURPOSE:To obtain an Al stabilized supercoductive wire material by supplying a copper or copper alloy covered superconductive wire whose surface is cleaned into an Al pipe whose inside is displaced with Al gas and decreasing the surface after cooling into a room temperature and then applying processing at 250-350 deg.C for 0.5-30hours. CONSTITUTION:The surface of a copper covered superconductive w...

A non-woven facing fabric for absorbent articles such as sanitary napkins with improved water repellency and stain resistance. The facing fabric comprises a web of hydrophobic fibres intermittently bonded with an absorbent binder material and top coated with a repellent material. Preferably, the web has a plurality of apertures therethrough.

The present invention relates to a method for controlling stores, in which objects are stored, removed and arranged. The arrangement of the said objects (5) is effected not in accordance with an indexed classification but as a function of their bulk and of the available arrangement spaces in the store (1), and in that, at all times, their location and the location and the dimensions of the arrange...

The field of the invention is that of the construction of microcomponents belonging to the family of vacuum tubes, of the diode or triode type, and electroluminescent components. The objective is in particular to solve the problems of manufacture under vacuum, and of precise anode-cathode spacing. This objective is achieved with the aid of a microcomponent of the type with a stacked str...

An acoustic window intended for land transport vehicles is proposed. Its index of acoustic attenuation differs by no more than 5dB from an index increasing by 3dB per octave from 800 to 2000 Hz, and by 1 dB per octave above this range. The examples are doubled-glazed windows or laminated windows in which the intermediate layer has a high attenuation. It is effective with respect to aerodynamic noi...

A process for a production of a molded article of a norbornene polymer, which comprises mixing a starting reaction liquid (liquid A) containing an activator of a methathesis catalyst system with a starting reaction liquid (liquid B) containing a catalyst component of the methathesis catalyst system and supplying the mixture into a mold, wherein a norbornene monomer is incorporated in at least one ...

A moulded filling material for packaging purposes is made by mixing cellulose pulp, fibre residues, cellulose power, waste paper and dust with swelling agents, starch prods. and additives to give a mixt. of the required consistency, and extruding the mixt. using an extruder with a thermal and mechanical action with a redn. in temp. and press. upon extrusion to cause expansion of the extruded prod....

The invention relates to a process for the preparation of thin regenerated polyglucane films by reacting polyglucane (preferably cellulose) with a silylating agent, forming a film and desilylating the film, where the film formation is carried out by the Langmuir-Blodgett process or by spin coating, and the desilylation is carried out by means of gaseous mineral acid or gaseous organic acid. The ...

PCT No. PCT/EP92/01921 Sec. 371 Date Jun. 15, 1994 Sec. 102(e) Date Jun. 15, 1994 PCT Filed Aug. 21, 1992 PCT Pub. No. WO93/04297 PCT Pub. Date Mar. 4, 1993.In a dust cover (6) for the brake cylinder (1) of a disc brake with a ring-shaped boot (7), with a fixing torus (8) at a first end of the boot engaging an annular groove (9) in the piston (3) of the brake cylinder (1) and with a stiffening lin...

The invention relates to a process for the compaction of expanded polystyrene and for subsequent thermal degradation of the resultant composition to give chemical raw materials, where the EPS is brought into contact with acetone or a mixture of liquids which compacts the expanded structure and forms a more or less viscous phase with the polymer.

A method and apparatus for the underground installation of pipelines. The underground installation of pipelines is carried out by driving pipe sections into the ground. The earth is loosened at the driving face via a liquid jet, and the excess earth is transported away from the removal zone. Only so much of the earth that has been loosened and mixed with the liquid is removed, such that the remova...

A vehicle with all-wheel drive is described, in which not only are the wheels of one axle connected to the drive shaft but the drive shafts are also connected to the engine by way of a differential gear. An electronic differential lock is described in which pressure is adjusted on the individual wheel brakes according to the occurrence of wheel slip.

The invention relates to a process for the continuous production of nonwoven highly water-absorbent complex characterized in adding in advance to an aqueous monomer solution a crosslinking agent and a oxidizing polymerization initiating agent having a latent activity, and after impregnating a continuous nonwoven fibrous web with this solution, causing a rapid polymerization reaction by adding an a...

2138271 9318800 PCTABS00025 Biofilters (3) for treating contaminated air (5) use immobilized biofilms on filter support media to biodegrade sorbed volatile organic compounds (VOCs) and biotransform inorganic oxides to sulfur (SOx) and nitrogen (NOx) to residuals such as carbon dioxide, water and various acids (HCL, H2SO4, HNO3). The buffers in the trickling liquid (9) neutralize the acid. Some pre...