Other

Hubert Von Blucher

Hasso Von Blucher

Ernest De Ruiter

Ernst De Ruiter

Porous spherical shaped small bodies of activated carbon having a diameter of from 0.1-1 mm and an inner surface of from 600-2000 mg.sup.2 /m made from milled and already activated carbon particles of a size below 60 .mu.m linked together by bridges from 10-100%, of their weight of water insoluble synthetic resins added as aqueous dispersions, and, as a result of the irregular, often splinterlike shape of the carbon particles, having gaps between these particles spread throughout the whole mass of the porous body, the size of the gaps being of the same order of magnitude as the particles themselves.

Microspherules of activated carbon and a process for manufacturing the

A method of manufacturing microspherules from activated carbon, including placing active-carbon particles of less than 100 .mu.m in size in a pelletizer equipped with a vortexer, incrementally adding an aqueous dispersion of a water-insoluble synthetic resin until microspherules of the desired size form, turning off the vortexer but allowing the pelletizer to continue operating, immediately powdering the microspherules off, and drying the microspherules.

Process for manufacturing microspherules of activated carbon

In a particulate additive for water for fire fighting containing a strongly swelling water-insoluble high molecular weight polymer as gelatinizing agent, the improvement which comprises a water-soluble release agent which does not cause the particles of said gelatinizing agent to swell, the particles of the gelatinizing agent being encased or dispersed in the release agent. Suitable release agents include polyethylene glycol, diammonium biphosphate, sugars, mannitol, etc. The gelatinizing agent may be a moderately cross-linked water-insoluble acrylic or methacrylic acid copolymer.

Aqueous swollen macromolecule-containing system as water for firefighting

A method of making activated carbon microspherules including kneading activated carbon particles of a size below 100 .mu.m, together with a dispersion of a water-insoluble synthetic resin to form an intimate mixture; pressing the mixture through a screen having holes related to the size of the desired microspherules; powdering the pressed material; and granulating and drying the resulting microspherules.

Process of making microspherules of activated carbon

A material for protection against chemical pollutants is produced by spraying onto a base fabric a mixture of activated carbon and a polymer binder to produce an open-pored foam structure which does not materially reduce the air permeability. The binder is permeable to the pollutant so the latter can reach the carbon, and the binder is less than 20% of the coating.

Carbon-containing protective fabrics

Textile flat-shaped structures exhibiting specific properties, such as flame-resistance or adsorbing capacity, are required for technical purposes, said structures being at the same time characterized by a high flexibility and tensile strength, as well as good wearing characteristics when used for protective suits. This is achieved by the invention by yarns that are sheathed with active ingredients, such as adsorbents, fire-proofing agents, ion-exchangers, decontaminating agents for chemical combat agents, catalysts or fixed enzymes. The active ingredients are adhered to the surface of the yarn or embedded in a binding agent. The sheathing may be additionally braided or flocked.

Yarn having specific properties

The invention relates to a waterproof and air-tight, moisture-conducting textile material (1) which has a coating (3) of coagulated polyurethane containing preferably a great number of micropores, and which has a water vapor permeability of more than 5000 g/m.sup.2 in 24 hours.

Waterproof and air-tight, moisture-conducting textile material

A yarn is prepared from a mixture of textile staple fibers and active carbon staple fibers which consists of 5 to 75%, preferably 20 to 40%, of the latter by weight, by chopping active carbon monofilaments into staple fibers, mixing them with textile staple fibers in a liquid vehicle, separating the fibers from the liquid vehicle and spinning them to yarn which can be used in weaving fabrics of tensile strengths of as much as 2000 newtons per 5 centimeters, which in turn can be used in making filters and protective suits.

Blended yarn containing active carbon staple fibers, and fabric woven

The invention relates to a filter sheet material composed of an air-permeable, flexible, especially textile supporting layer, on which there is imprinted in a certain pattern a mixture containing an adsorbent in powder form and a polymeric binding agent, the adsorbent covering up to 90% of the surface of the supporting layer. The invention furthermore relates to the use of such filter sheet materials with active carbon as adsorbent for protective clothing, and to the preparation of the material by rotary screen printing from a paste made of the powdered adsorbent and a dispersion of the polymeric binding agent.

Filter sheet material and method of making same

A waterproof and moisture-conducting fabric comprising a base permeable to water vapor and sealed with a closed coating of a hydrophilic polymer. The sealing coating is advantageously a compressed foam of an acrylic resin modified with polyvinyl chloride or polyurethane. A second base may be laminated onto the sealing layer. Protective fillers such as lead compounds and carbon may be included in or on the coating. The fabric is suited for protective clothing articles such as rescue-at-sea garments and shoe uppers, and sleeping bags.

Growing community of inventors

Dusseldorf, Germany

Hubert Von Blucher