A process for the preparation of aqueous epoxy resin dispersions comprising (1) 20 to 75% by weight, based on the total dispersion, of an epoxy resin constituting a condensation product of a) epoxy compounds having at least one epoxy group per molecule and an epoxide equivalent weight of 90 to 3000 g/mol, and b) aromatic polyols; (2) 3 to 20% by weight, based on the total dispersion, of an emulsif...

The invention relates to dispersed liquids containing hydroxy and/or amino-functional compounds by causing polyurethane, polyurethane/polyurea and polyurea waste made by the PUR-RIM and/or RRIM process to react with at least one diamine compound. The dispersed liquids thus made are suitable for the production of polyurethanes, polyurethane ureas or polyureas.

2.1. A known device of this kind having a movement screw requires a considerable installation length in the direction of the axial movement of the member because the change in the free length of the movement screw is equal to the axial movement. 2.2. To reduce the requirement for installation length while simultaneously retaining detectability of axial movement of the member which has occurred, th...

A gear or belt pulley for connection to a motor arrangement has at least one hub unit with location for a bearing, with a dog clutch between motor and gear or pulley wheel. The front face of the gear (1) or hub (2) forms a component of the clutch (5), which operates in connection with another section fixed to the motor. The hub diameter is equal to the outer diameter of the connecting clutch compo...

The electrical device proposed has a circuit board (10) carrying an electronic circuit containing electronic components (12). For electrical-contacting purposes, the circuit has a multiple contact strip (14). In order to protect the circuit reliably against moisture, it is fitted, in addition to the casing cover (27) and casing floor (32), with moistureproof plastic covers (16, 23) which form a ho...

The arrangement for transferring a.c. voltages, esp. high frequency signals in a hollow rod made up of individual pipes has a transformer winding (11,12) on one end of each pipe connected to another winding on the other end via two lines (13,14), at least one of which contains a capacitor. The windings on adjacent ends of successive pipes form signal transfer transformers. The transformer inductan...

Sheets of transparent plastic and glass coated with polythiophene or soluble polythiophene salts (I) are useful as heat protection windows; polymers (I) contain units of formula (II); R1, R2 = H or 1-4C alkyl or R1+R2 = opt. substd. 1-4C alkylene. Pref., R1, R2 = H or Me, or R1+R2 = opt. alkyl-substd. CH2, opt. 1-12C alkyl- or Ph-substd. CH2CH2, or 1,2-cyclohexylene; the prodn. of (I) and coatings...

A casing is proposed for an electronic device, which casing consists essentially of a frame (2), a cover (17) and a base (18), the cover (17) and the base (18) being constructed as flat plates from sheet steel with walls (20, 21, 22 and 23, 24, 25) which are integrally formed on three sides. The walls (20, 21, 22) and (23, 24, 25) engage around the frame (2) on three sides. Furthermore, in each ca...

In an optical head, a semiconductor laser is supported on a base and the base is secured to a hollow frame. A lens-barrel for supporting collimator lens system is disposed in the hollow frame so that the collimator lens system is faced to the semiconductor laser. The frame and lens-barrel are secured in point contact securement to each other by studs screwed in dies provided on the frame. The base...

Conductive structures in polymers are obtained by a method in which poly(organylheteroacetylenes) of formula I or a mixture of poly(organylheteroacetylenes) of formula I and other polymers are exposed to radiation of high energy density, preferably laser radiation. At relatively low temperatures of 100 DEG C. to 600 DEG C., the polymer structure is effected so that electrically conduc...

Treating pressure-gasification gases, in partic. for their cooling, dust-freeing and water-vapour saturation, at a pressure of pref. 0.5-7.0 MPa and a temp. of pref. 700-2000 deg.C, by spray-quenching. Claims include several features of the method and of the appts. used. USE/ADVANTAGE - For cleaning gases produced by pressure gasification of powdered fuels, without the disadvantages (e.g. caking ...

2115244 9304120 PCTABS00020 The rate of disintegration in cold water of water soluble packaging films is improved by incorporating into a film forming polymer composition, to form a dry blend or aqueous dispersion, a substantially water insoluble cellulose material prepared from alkali metal salts of carboxy(lower alkyl) cellulose or hydroxy(lower alkyl) cellulose. The increased disintegration is ...

Alkylated vinyl pyrrolidone copolymers are claimed. These polymers contain an olefinic monomer fraction which is predominantly C30 alkyl olefin. The polymers can be made in the physical form of flakes or powders, and prepared by a novel process. The polymers can be used in personal care compositions.

A method of treating the surface of an absorbent resin, which comprises mixing (A) 100 parts by weight of an absorbent resin powder possessing a carboxyl group, (B) 0.01 to 30 parts by weight of a cross-linking agent, (C) 0 to 50 parts by weight of water, and (D) 0 to 60 parts by weight of a hydrophilic organic solvent in a high-speed stirring type mixer provided with an inner surface formed subst...

As a means to improve the adhesiveness of a wax coated surface on a polypropylene substrate film, so that a thermal stripe seal can be suitably adhered thereto, an adhesive promoting composition comprising a neutralized olifin-unsaturated acid ionomer, and a cross-linkable formaldehyde resin admixed into and applied to the polypropylene surface together with, an emulsion of wax and a binder theref...

An air core inductor (10) having mounted thereon a band (20) of material of selected characteristics providing only an electromagnetically coupled resistance that reflects back into the windings of the inductor for filtering applications.

A modulated bias unit is provided for controlling the direction of drilling of a rotary drill bit when drilling boreholes in subsurface formations. The unit comprises a plurality of hydraulic actuators 132 spaced apart around the periphery of the unit and having movable thrust members 134 hydraulically displaceable outwardly for engagement with the formation of the borehole being drilled. Each act...

A radioscopic image former comprises a slit between an X-ray source and a subject to produce an X-ray fan beam to scan the subject. The transmission of the slit is adjusted locally during the scanning depending on local absorptions in the subject. The X-ray fan beam is cyclically modulated. The local modulation frequency depends on the coordinate in the longitudinal direction of the slit. The slit...

The device combines the functions of a self-locking differential and a torque divider and operates to a prescribed ratio between the two driven halfshafts. The adjacent ends of the two halfshafts (1, 2) carry respective worms (11, 21), dissimilar in diameter, each paired with at least one worm wheel; these two worm wheels (12, 22) are carried by the cage (3) of the differential, and interconnected...

A differential drive has a differential carrier rotatably supported in a differential housing. Two axle shaft gears are rotatably held in cylindrical bores in the differential carrier and are arranged coaxially relative to each other. Several differential gears, in an axis-parallel arrangement, are supported in an axle-free way in bores in the differential carrier. One group of differential gears ...