The invention relates to a method of preparing an optically active cyanohydrin by addition of hydrogen cyanide to a carbonyl compound, selected from aldehydes and ketones, in the presence of hydroxynitrile lyase, in a biphasic solvent system, comprising a homogeneous aqueous solution of said enzyme, and a suitable organic solvent which is at least substantially immiscible with water. Said method i...

Disclosed is an absorbent composite including a web formed from a mixture of fibrous material and particulate absorbent material. The web contains from about 15 to about 30 weight percent water. The described absorbent web is capable of containing relatively large quantities of particulate absorbent materials while maintaining an acceptable degree of flexibility.

Composite adsorbent beds comprised of conventional 13X adsorbent and special cation exchanged adsorbent materials enable vacuum pressure swing adsorption operations for air separation to be carried out at advantageously low oxygen or nitrogen product costs.

A balloon catheter with a shaft having a balloon located proximate a distal end thereof, with the shaft having a lumen through which a balloon is supplied and a lumen through which a guide wire is passed. The shaft consists of a proximal area and a distal area, with the shaft being made of a stiffer material in the proximal shaft area than in the distal shaft area. In one embodiment of the proxima...

The machining head of the invention is able to drill a large number of holes spaced regularly on a part made of a composite material having a large surface, such as carbon. It is equipped with electropins (5) rotating at high speed (forty thousand r.p.m) cooled via oil circulation. Suction means for sucking up dust resulting from machining are provided around drill bits (7). Means (20) for suppor...

2103820 9312290 PCTABS00023 Two press rolls (1, 3), the axes of which are in a pressing plane (E), together form a press gap. The two press rolls (1, 3) are supported in pillow blocks (5, 6) which are coupled together in pairs by means of releasable tension rods (7, 8) which transmit the pressing force. At zero pressing force, the tension rods (7, 8) are prestressed at a maximum of a fraction of t...

The invention provides a melt-blown non-woven fabric obtained by melt-blown an ethylene-? -olefin copolymer having a density of smaller than 0.900 g/cm3 and a crystallinity of from 5 to 40% or by melt-blowing a resin composition which chiefly comprises said copolymer, a laminated non-woven fabric obtained by laminating as a unitary structure a dry-type non-woven fabric on the melt-blown fabric tha...

A process for preparing a compound of formula (I): wherein each of R1 and R2 is, independently, hydrogen or an organic residue comprises reacting a compound of formula II: wherein R1 and R2 are as above defined, with a radical initiator, in the presence of molecular oxygen, typically pure O2 or air. The compounds of the formula (I) are useful intermediates for the production of...

A floor cleaning machine comprises at least one motor-driven rotatable disc-shaped brush (1), a tank for cleaning fluid and a pipe for cleaning fluid leading from the tank and directed towards a region at the back of the brush (1) located between the central axis of the disc-shaped brush and a circular line in the latter in which a plurality of holes (3) are formed through the brush, whilst above ...

Sliders for supporting heated material 6 on skid pipes 2 in heat treatment furnaces, such as pusher furnaces, are retained on the skid pipes by their legs, which are elongated, so that they form hollow spaces with the skid pipes. In these hollow spaces there are located simply-releasable locking members 4, 5 which prevent the sliders from being removed upwards.

A fibrous insulation batt packaging machine comprises a vacuum chamber, an inlet tube for receiving batts, the inlet tube being defined by (a) a pair of sidewalls, (b) a pair of moveable end walls, and (c) a platen, the platen being mounted for vertical movement, vacuum means for partially evacuating the vacuum chamber thereby causing compression of the batts, vacuum chamber top doors mounted for ...

Mobile equipment characterised in that a box casing contains pneumatically operated medical/surgical instruments with a connection to the compressed air system and a source of electrical power, and to mains water either continuously or only for topping up.

The invention relates to an automatic operation four- sided containing mask (for forming wooden products) which can be accessed at the top and at the bottom and which is capable of varying the perimeter by means of operation of two controlled axes, with the associated movement, towards or away from each other, of the peripheral rods which are located in pairs on different planes and which, togethe...

The invention proposes an electric furnace with submerged arc, comprising an apparatus for blowing oxygen into the liquid bath by means of nozzles 14 situated at the colder peripheral zones of the crucible, and possibly through ducts 15 provided in the electrodes.

The subject of the present invention is a new electrical component which allows and enables an alternative to the classical and familiar ballast for neon lights. The invention in question consists of a new power supply system which, via an inductor, has the specific purpose of limiting the current taken up from the network, as well as the possibility of regulating the luminous intensity of the lig...