A porous membrane is obtained by providing a crosslinked polymer mainly composed of (a) a polymerizable monomer having an acid anhydride or esterified carboxyl group or a monomer having a carboxyl group, (b) divinylbenzene, and optionally (c) a styrene, or (b) and (c), on at least part of the surface of polyolefin (particularly polyethylene or polypropylene) porous membrane, to render the membrane...

A coherent fire-resisting flexible sheet material for aerospace applications is provided consisting of a layer of ceramic fibres embedded in a silicone rubber compound. The ceramic fibres may be in the form of a plain woven fabric of monofilament fibres of alumino-boro-silicate and the silicone rubber compound can be a curable non-foaming methyl-phenyl silicone compound. In production, the silicon...

A method of improving the flame resistance of foams, such as open cell polyimide foams, through the introduction of finely divided non-metallic inorganic particles which are gel forming and insoluble in water and polar organic liquids into the foam cells. A stable liquid suspension or gel, preferably aqueous is prepared using these particles. An opacifier such as finely divided titanium dioxide or...

A step-wise process for the preparation of silicone-containing polymer particles is provided. The process is particularly, though not exclusively, useful for preparing uniform, crosslinked silicone rubber particles of controlled particle size distribution and submicron size.

In the manufacture of creep-free prepregs based on phenolic resins of the resole type, the reinformcing agents are impregnated with an essentially solvent-free mixture of a phenolic resin and a viscosity controlling amount up to 60% by weight of the resin of an alkali metal metaborate or an alkaline-earth metaborate or a mixture thereof. The resultant compression molded articles exhibit improved s...

Improved separation of feed streams containing multiple components is effected by means of a multi membrane staged pervaporation process wherein each membrane stage is series is run as progressively higher temperature, stronger vacuum or both than the preceding stage. This process is especially useful for separating components from wide boiling range mixtures.

Disclosed is an improved apparatus for producing metal powder by gas-atomizing method. The apparatus comprises a molten metal holding vessel (1) of bottomed cylinder shape, a molten metal discharging runner (2) installed at the bottom of the vessel, and a molten metal spraying device (4) having gas-jetting nozzles (42) in a spraying chamber (41) connected to the lower end of the runner; and is cha...

A route planner comprises a control unit, a working memory and a storage memory in which a topological road network is stored in the form of at least one n-cell table. For the planning of a route beween a starting point and a destination point a set of candidate cells is searched each time on the basis of an expansion index which indicates an n-cell, a further expansion index being derived from sa...

PCT No. PCT/EP88/00998 Sec. 371 Date Jun. 13, 1990 Sec. 102(e) Date Jun. 13, 1990 PCT Filed Nov. 3, 1988 PCT Pub. No. WO89/04353 PCT Pub. Date May 18, 1989.The invention relates to a process for the preparation of aqueous dispersions to be further processed to electrocoating paints with baking temperatures below 160 DEG C. and baking times

Water-soluble or water-dilutable natural or synthetic polymers with a marked capacity for absorbing water and aqueous fluids are obtained by an agglomeration of a fine-particle powdered starting material by means of a solution or dispersion of an agglomerating agent in water, an organic solvent miscible or immiscible with water or a mixture of water and an organic solvent of this type, and if nece...

PCT No. PCT/EP88/01089 Sec. 371 Date Aug. 3, 1990 Sec. 102(e) Date Aug. 3, 1990 PCT Filed Dec. 1, 1988 PCT Pub. No. WO89/05326 PCT Pub. Date Jun. 15, 1989.The present invention relates to granular materials of water-swellable polymers having a content of water-swellable polymer and agglomeration auxiliary agent as main component, and optionally further additional non-agglomerating components, the ...

A molten metal spray-depositing apparatus for atomizing a stream of molten metal into metal particles in a divergent spray pattern of higher mass density at an upstream leading peripheral portion of the spray pattern, relative to the direction of movement of a substrate, than either of a center region or downstream trailing peripheral region of the pattern. The atomizer (34) may generate one-side ...

PCT No. PCT/EP90/00353 Sec. 371 Date Nov. 6, 1991 Sec. 102(e) Date Nov. 6, 1991 PCT Filed Mar. 3, 1990 PCT Pub. No. WO90/10780 PCT Pub. Date Sep. 20, 1990.The invention relates to aqueous preparations of acid-catalyzed melamine resins and/or urea-formaldehyde condensates which contain an addition of zeolite NaA and/or hydroxysodalite to increase their usefulness. The preparations in question are p...

A smoke evacuation system for use in surgical procedures in a surgical area is disclosed comprising a portable evacuation hood configured to be disposed proximate a surgical site for receiving gaseous by-products produced during the surgery. The evacuation hood contains a first filter disposed therein for trapping particulate matter. The smoke evacuation system further includes suction source in o...

Adhesive compositions having a Tg of -45 DEG to -25 DEG C. suitable for application to plasticized polyvinuyl chloride comprising 25 to 40% by weight of a vinyl ester of a alkanoic acid; 10-30% by weight ethylene; 20 to 30% weight of di-2-ethylhexyl maleate or fumerate; 20 to 30% by weight of 2-ethylhexyl acrylate; and 1 to 10% by weight of a monocarboxylic acid.

An apparatus for controlling an automobile air-conditioner wherein the direction of solar radiation is determined based on a signal which is obtained by retarding the leading edge of a solar radiation signal and the position of an air-distributing door is controlled according to the thus obtained signal. A signal whose leading and trailing edges are progressively increasing and decreasing, respect...

An iodine-containing compound consisting of at least two repeating units selected from the formulae: -(CH2CF2CF2O)a- -(CHClCF2CF2O)b- -(CCl2CF2CF2O)c- -(CHFCF2CF2O)d- -(CFClCF2CF2O)e- -(CF2CF2CF2O)f- wherein a, b, c, d, e and f are each 0 or a positive integer and satisfy the following equations: 2

A method and various forms of apparatus are disclosed relating to the fabrication of solid particulate filter bodies (21) and other honeycombed structures, in which the cells (22) are selectively charged with a plugging or other flowable material (34). A solid covering (28), preferably being an adhesive-backed transparent thermoplastic film such as polyester, is applied over each of the end faces ...

The invention is a flexible mask for use in charging a flowable material into selected cells of a honeycomb structure and is of particular utility in charging a sealing material into the ends of selected cells of such a structure during fabrication of solid particulate filter bodies and other selectively plugged honeycomb structures. The mask has a central body with a set of openings extending the...

This specification teaches an electrically heated, glass vision unit having a complex curved configuration. The unit is made by cutting a glass substrate (10) from a flat glass bracket (12). The glass substrate (10) has first and second surfaces separated by a uniform distance. A pair of electrically conductive bus bars (16-16) are applied to one of the surfaces of the glass substrate (10). The bu...