The use of a liquid for the preparation of a rigid polyurethane and/or polyisocyanurate foam by reacting a polyisocyanate and a polyol in the presence of a blowing agent characterised in that the liquid is an inert, insoluble, non-blowing liquid. CFC-free foams may be obtained showing good insulating properties.

When controlling a travelling body so as to move forward the travelling body along the predetermined route, the distance and direction of deviation of a body of the travelling body from the predetermined route are measured, the above measured distance and direction of deviation of the body from the predetermined route are inputted as an observed value into an antecedent operation part in which the...

The invention relates to a coating composition for PVC profiles, based on a binder, a crosslinker and a thermoplastic powder. It is particularly useful for coating PVC profiles for windows, shutters and doors. The PVC window/door frames thus coated have exceptional impact, abrasion, friction and weather resistance.

A process for chemical vapor-phase synthesis (CVD) of diamond with a wide variety of applications inexpensively at a high speed is disclosed. In one embodiment, a mixture of an oxygen gas, a carbon-containing compound gas, and optionally an inert gas is introduced into a reaction vessel, and a plasma is generated therein utilizing an electromagnetic field to thereby produce diamond on a base mater...

A process for producing an aromatic polysulfone molding compound improved in mold-release characteristics which contains 0.02-0.3 part by weight of a metal soap per 100 parts by weight of an aromatic polysulfone resin, the process comprising the steps of: forming separately aromatic polysulfone resin pellets A and pellets B for molding purposes through melt mixing, the pellets A containing 0.3-1 p...

A hydraulic inorganic composition which comprises a hydraulic inorganic powder, at least one of polysaccharides selected from the group consiting of beta -1,3-glucans, pullulan and XCD-Polymer in an amount of 0.1-10 parts by weight in relation to 100 parts by weight of the hydraulic inorganic powder, and water in an effective amount. The composition preferably further contains a reinforcing fibe...

The slagging efficiency of a coal gasification process is increased to 90% by tangential firing at small angles and the installation of a stack of specific length over diameter ratio between the reactor outlet and the quench inlet. In this manner slag lifting and slag entrainment at the quench inlet - stack outlet are prevented.

Method of control of the torque of a Diesel engine with an electronic injection pump, turbocharged or otherwise, associated with an automatic gearbox, according to which the electronic control box of the gearbox acts when moving up in gear from the ratio N to the ratio N + 1 on the control box of the electronic Diesel pump, by means of a one-way and single-wire link via a single all-or-nothing sig...

A gear shaft assembly (42) is provided including a shaft (5) having a first set of gear teeth (6) formed integrally in a second portion (51) thereof and extensions of said teeth extend axially over an adjacent reduced diameter second portion (50) for receivably mounting a second gear (7) for rotation with the shaft.

To seal a cable junction, an insert is placed between two branch cables (42a,42b;55,56;56,101a,101b) of the junction, which is then enclosed by a heat shrinkable envelope (45,58,103). The insert has at least one insert part having a block (32,43a,43b,50,70,80,100a,100b,100c) of heat fusible material attached by one or more flanges (31,41a,41b,51,82,102a,102b,102c) of heat conductive material to th...

For the continuous automated production of powders that are well suited for hot pressing-i.e. those consisting essentially of spherical or cubic particles, of high-temperature resistant polymers without damage to the polymer structure in the course of the production process, a concentrated solution of the polymer in an aprotic polar solvent is continuously expressed into a twisting cone of hot aqu...

A monolayer or multilayer (i.e., a composite or laminate) stretch wrap film is fabricated from a linear low density polyethylene (LLDPE) possessing a significant level of cling force not attributable to added cling component. It is thought that the inherent cling force is due to the presence of a relatively high level of n-hexane extractibles in the LLDPE resin.

Disclosed is a molecularly oriented molded body of an ultra-high-molecular-weight ethylene/ alpha -olefin copolymer having an intrinsic viscosity ( eta ) of at least 5 d l /g and such a content of an alpha -olefin having at least 3 carbon atoms that the number of molecules of the alpha -olefin is 0.1 to 15 on the average per 1000 carbon atoms, wherein the molded body shows at least two crystal f...

An optical head for reproducing optical recording medium has reflection optical means, such as a reflection type astigmatic optical Fresnel lens (7A) or reflection type light-beam-dividing (into at least two beams) Fresnel lens, grating or prisms, on or above a surface of a beam splitter (4), so that light returning from the optical recording medium (6) travels in the beam splitter to photo-detect...

The present invention relates to a two stage process for the incorporation of plastic and ethylene-propylene rubber into asphalt. In the first mixing stage, a rubber-rich masterbatch is prepared by mixing asphalt, plastic and the rubber. In the second stage of mixing, additional asphalt is mixed with the masterbatch. The first stage is completed in polymer mixing equipment while the second stage i...

Vessel is made of styrene resin and is coated on at least one surface with a layer of vinylidene chloride resin. The vinylidene chloride resin layer is composed of a three component copolymer, of vinylidene chloride 96-70 mol%), vinyl chloride (3-30 mol%) and an acrylate- or methacrylate-low carbon number alkyl ester (3-20 mol%). The styrene resin vessel and the vinylidene chloride layer are bound...

PCT No. PCT/EP91/01232 Sec. 371 Date Jun. 7, 1993 Sec. 102(e) Date Jun. 7, 1993 PCT Filed Jul. 2, 1991 PCT Pub. No. WO92/01008 PCT Pub. Date Jan. 23, 1992.The present invention relates to a process for the production of water-swellable products, using very fine particles of water-swellable polymers, characterized by the following steps: a) the very fine particles of water-swellable polymer are dis...

Prodn. of moisture-storing plastic padding (I) by (a1) prepn. of a hydrophilic polymer gel (IIA) in a liq. medium, or (a2) swelling a compact hydrophilic polymer (IIB) with a liq. medium to form a gel, followed by (b) removal of the liq.. Also claimed is material (I) obtd. by the above process. Pref. (IIB) is in the form of powder, granules, extrudate, strip or film, and is converted into a gel wi...

A light separating element designed to have parallel first and second external surfaces, a first polarizing film disposed on the first external surface and arranged to reflect a first portion of a first component in a first direction and transmit a second portion of the first component and all of a second component in a second direction. Further, a second polarizing film can be disposed on a secon...

In a gas-discharge switch at least two main electrodes are arranged at a distance d from one another for a low-pressure gas discharge, which main electrodes form in a switching chamber a cathode and an anode of a discharge gap for the low-pressure gas discharge which is triggered by increasing the electron density in a hollow cathode space, the cathode and the anode each forming hollow cylinders w...