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4482582 |
Modified polyurethane product having improved load bearing characteristics
A modified low-density flexible polyurethane foam product having a relatively high degree of firmness as well as commercially acceptable dielectric heat sealing characteristics. The product...
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4474632 |
Method of forming a composite foam insulated jacket for a railroad tank car
A railroad tank car includes a tank body and means for applying generally uniform heat to the lower portion of the body. There are a plurality of spaced generally semicircular rings attached to the...
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4463467 |
Method and apparatus for applying a pattern to a continuously advancing web of material
A method and apparatus for applying a pattern to a continuously advancing web with a foam containing treatment medium. The pattern may be generated in the foam prior to or after the foam is...
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4464423 |
Method for forming dual gloss coating
A dual gloss coating is formed on a substrate by first applying to the substrate a continuous layer of curable polyurethane or PVC plastisol or organosol. After the layer is at least partially...
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4454187 |
Composite laminate material and process for making the same
A composite laminate material and a process for making the same are provided, the process comprising the steps of providing an unbonded fibrous batt of desired thickness having a thermosetting...
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4454193 |
Carbon-metal phosphate ester composite and method of making
A carbon-metal phosphate composite comprises a carbon body having a glassy metal metaphosphate distributed therethrough and coating the surface thereof, wherein said metal metaphosphate is a...
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4452829 |
Sprayable, cross-linked trimer polymer and method of use and preparation
A sprayable polyisocyanurate composition, which composition is prepared by reacting equal parts of an A side mixture, containing a low-functionality methylene diisocyanate, with a B side mixture...
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4451529 |
Coated polystyrene foams and compositions and processes for the production thereof
Novel processes and compositions for producing expanded polystyrene articles coated with a durable, glossy, solvent-resistant integument, the compositions comprising a UV-curable oligomer, a...
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4447378 |
Method of producing a composite foam wire reinforced hose
A hose of improved impulse life is described including an inner polymeric tube which has a relatively hard outer surface, a tightly packed wire reinforcement e.g., braid or spiral, telescoped over...
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4440808 |
Method of uniformly applying liquid treating media to foraminous workpieces
Liquid treating medium is uniformly applied to a textile workpiece by foaming it, depositing the foam in a confined space atop the workpiece, applying suction to the workpiece from below and...
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4430136 |
Process for preparing open-cell structure of vinyl chloride resin
A process for preparing an open-cell structure from a vinyl chloride resin. The process includes mixing a vinyl chloride resin, stabilizer, plasticizer, surface active agent, azodicarbonamide and...
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4423161 |
Apparatus and method for dispensing foamable compositions
Pressure vessels are disclosed for containing a foamable mixture of liquid and a blowing agent for incrementally or continuously dispensing a foam of constant foam-volume ratio. Liquid compositions...
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4421561 |
Water based ink compositions using organic acid
Organic carboxylic acid containing from 2 to 12 carbon atoms and having at least two carboxyl groups or at least one carboxyl group and one amino or hydroxy group or anhydride or halide of such...
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4420510 |
Method for applying a foamed adhesive under start-stop conditions
A method of uniformly applying a foamed adhesive to a normally moving substrate which is subject to stops and starts at irregular intervals. A uniform spread weight of adhesive is applied during a...
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4415455 |
Reverse osmosis membranes based on hydroxyalkyl methacrylate and methacrylic acid copolymers
Good salt rejection, flux characteristics and resistance to degradation are obtained with semi-permeable reverse osmosis membranes made by coating a microporous substrate with a copolymer of a...
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4415608 |
Continuous production of polymethylpentene membranes
Gas separation membranes may be prepared in a continuous manner by passing a porous support which may, if so desired, be backed by a fabric through a solution of polymethylpentene dissolved in an...
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4415388 |
Method of making absorbent bearing products
Particulate absorbents of a water-insoluble water-swellable polymer having a gel capacity of at least 10 are immobilized with a composition comprising the absorbent in a liquid polyhydroxy organic...
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4413074 |
Hydrophilic surfaces and process for making the same
A hydrophilic surface can be provided on a hydrophobic polymer surface by contacting the hydrophobic surface with a solution of a hydroxyalkyl cellulose and a perfluorocarbon surfactant in water or...
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4411949 |
Polymeric foams from transesterified by-product derived from manufacture of dimethyl terephthalate and laminates therefrom
Cellular foams, particularly polyisocyanurate foams, are prepared by reacting together an organic polyisocyanate, a blowing agent, a trimerization catalyst, and a minor amount of a polyol mixture...
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4410568 |
Process for preparing selective permeable membrane
A process for preparing a selective permeable membrane having self-supporting property, which comprises coating on a supporting substrate a dope comprising a polyimide polymer consisting...
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4396529 |
Method and apparatus for producing a foam from a viscous liquid
A method and apparatus for producing a coherent or extruded output stream of viscous liquid containing a dispersed gas to form a foam. The liquid is pressurized and delivered to apparatus having an...
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4396572 |
Support for porous barriers made of baked ceramic material
The invention relates to a support for a ceramic porous barrier of the kind used for obtaining a concentration of uranium 235 in uranium hexafluoride by ultrafiltration. The support is formed by...
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4394457 |
Porous composite material and process for preparing same
A porous composite material includes a porous body formed of a hydrophobic polymer such as polyvinyl chloride and a layer of a hydrophilic polymer such as polyvinyl alcohol provided over at least a...
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4390455 |
Catalytic membranes in artificial organs
Method for the production of membranes for artificial organs, in the form of tube foils, flat foils or hollow filaments, into which metals and/or metal compounds are incorporated, in which a metal...
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4387122 |
Method for the manufacture of material absorbing ultra-high frequency waves
A method of producing a material for absorbing ultra-high frequency waves from a starting porous material having closed cells includes the steps of immersing the porous material into a fluid having...
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4376140 |
Method for producing a fluorinated copolymer membrane
A method for producing a fluorinated copolymer membrane comprising a first layer made from a fluorinated copolymer having pendant sulfonylchloride groups and a second layer made from a fluorinated...
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4365968 |
Method of treating textile materials
Disclosed herein is a process for treating textile materials with finishing agents wherein a first finishing agent-containing composition is applied to a textile material and a second composition,...
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4360957 |
Method for fabricating an exhaust gas treating unit
Method for fabricating a filter or catalytic reactor for hot exhaust gases, which includes a filter bed made from a frangible material such as steel wool or the like. The latter is confined and...
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4358378 |
Selective permeable membranes and process for preparing the same
A selective permeable membrane and a process for preparing the membrane. The process comprises applying to a supporting substrate a membrane forming solution prepared by dissolving in an organic...
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4356215 |
Method of manufacturing supports for porous filters
The invention relates to a method of manufacturing supports for porous filters. Supports are placed in contact with a first slip coating liquid containing in suspension a mineral powder comprising...
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4349597 |
Production of synthetic leather
A composite synthetic leather sheet material and method of manufacture thereof is disclosed. The composite sheet material comprises outer thermoplastic polymeric layers bonded to opposite faces of...
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4346127 |
Process for preparing absorbing mop material of non-woven fibres and polymeric binder
A process is disclosed for preparing an absorbing mop material comprising a substratum of non-woven fibres and a flexible, porous, polymeric binder. The process comprises preparing a non-woven web...
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4346126 |
Method of casting a reverse osmosis or ultrafiltration polymeric membrane
An improvement in the method of casting a reverse osmosis or ultrafiltration polymeric membrane on a wall of porous support having a first, high pressure side under service conditions, and a...
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4343835 |
Method and apparatus for treating open-weave substrates with foam
Method and apparatus for applying foam to an open-weave substrate. The apparatus contains angled shear strips to shear the foam positioned above a foam outlet. The shear strips, enclosed at each...
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4342798 |
Process for production of flame resistant foam
The instant invention is directed to a process for the production of flame resistant foams by the impregnation of polyurethane foams with a dispersion consisting substantially of an aluminum...
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4341832 |
Synthetic chamois wiping cloths
An improved composite sheet material product having the appearance, drape, hand and water absorption and retention characteristics of natural chamois leather, comprising, in combination, a...
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4341686 |
Adhesive products and a process for their use in polyurethanes
Adhesive products comprising an aminoalkyltrialkoxysilane, polyvinyl chloride powder, silicic acid and an organic solvent are employed to attach cover layers to cellular and non-cellular...
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4336300 |
Process for the production of water vapor-permeable sheet materials
The specification describes water vapor-permeability sheet materials, particularly useful in the footwear industry. The production of sheet materials which are water permeable, highly resistant to...
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4333972 |
Highly anisotropic membranes
The discovery that highly anisotropic membranes, e.g. with a degree of anisotropy of five can for the very first time be produced by the dry phase inversion process by a very specific combination...
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4323474 |
Method of producing foam material and apparatus therefor
A foam material, used, for example, as a backing material on rugs, is produced by continuously pumping a viscid raw material through a flow meter into a mixer in which the raw material is foamed up...
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4321288 |
Process of making an improved filter media
A method for preparing an improved filter medium of enhanced electrokinetic capture potential for contaminated liquids having suspended therein electro-negative particles of about 0.1 to 0.7 micron...
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4309463 |
Production of molded polymer body with metal inclusions
A molded polymer body with very fine, discrete, solid particles composed of a metal, metal compound or a mixture of the same incorporated within the molded body in a uniform pattern of...
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4309372 |
Method of making formulated plastic separators for soluble electrode cells
A method of making a membrane comprised of a hydrochloric acid-insoluble sheet of a mixture of a rubber and a powdered ion transport material is disclosed. The sheet can be present as a coating...
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4307135 |
Process for preparing an asymmetric permselective membrane
Asymmetric reverse osmosis membranes are made from synthetic aromatic polyimides having a relatively high predominance of polar groups in the polymer backbone. A polar/non-polar group ratio of from...
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4307127 |
Gasket having foamed sealant
A gasket and a process for preparing it are described characterized in that a sealant coating for the gasket is a compressible, resilient, foamed cured resin. The resin, which may be an epoxy,...
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4305169 |
Method for continuously treating fabric
A carpet printing method is disclosed, and an apparatus for carrying out the method. The method includes the steps of supporting a piece of fabric on a perforate belt, generating a foam adjacent to...
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4304562 |
Fabric softener article for an automatic washer and method using same
A fabric conditioning article having controlled release properties comprising a porous substrate impregnated with one or more portions of a fabric softening composition consisting essentially of a...
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4303456 |
Process for the continuous production of wet foam laminated fabrics
A process for the continuous production of laminated elastic fabrics having good permeability to air and/or water vapor, which comprises coating a first web of fabric in the tensionless state with...
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4303727 |
Intumescent flame-resistant coating
A plastic coating is provided which protects coated structures from flame. The coating is a product resulting from mixing an aromatic polyisocyanate, an aromatic polycarboxylic compound, and...
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4302334 |
Microporous polymeric membrane
A microporous polymeric membrane is made by preparing a polymer-casting solution, casting a thin film of the casting solution on a support base, allowing partial evaporation of the solvent from the...
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