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| Number | Title | Issue Date |
| 4543159 | Reinforced cement sheet product containing no asbestos for fabricating on Hatschek machine A process for making a cement and non-asbestos fiber mat on a Hatschek machine having a cylinder vat, a cylinder in the cylinder vat, and a porous surface on the cylinder on which the mat is formed and through which drainage water passes including the ste... | 09/24/1985 |
| 4529653 | Flexible, asbestos-free gasket material Non-asbestos flexible sheet material suitable for use in gaskets for the exhaust manifold of an internal combustion engine is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aq... | 07/16/1985 |
| 4529662 | Asbestos-free sheet material for spiral-wound gaskets Non-asbestos flexible sheet material suitable for use in the manufacture of spiral wound gaskets is made by dewatering on a water-permeable conveyor a layer of aqueous slurry and compressing and drying the dewatered layer, the aqueous slurry employed bein... | 07/16/1985 |
| 4508594 | Polyaldehyde/polyacetal compositions Water-soluble monomers and water-soluble polymers derived therefrom are disclosed. These materials can be used with other vinyl monomers to form water-soluble polymers which are reactive with cellulosic substrates to obtain drastically improved strength, ... | 04/02/1985 |
| 4507358 | Insulating paper sheet of synthetic resin flakes and natural fibers This invention provides an insulating paper sheet produced by mixing synthetic resin flakes with natural fibers to provide a composite paper mass. This insulating paper sheet is favorably accepted as an insulating member for covering the conductor of a po... | 03/26/1985 |
| 4501641 | Process for producing paper or non-woven fabric A process for producing paper or wet non-woven fabric comprising mixing an aqueous anionic polymer solution with an aqueous cationic polymer solution, adding the mixture to a slurry of fiber or pulp, converting the slurry into paper or non-woven fabric by... | 02/26/1985 |
| 4487657 | Method for preparing a fibrous sheet The present invention relates to a method for preparing a fibrous sheet by paper-making means, according to which the flocculating agent is introduced in the aqueous suspension containing the basic mixture chosen from the group constituted by (i) the fibe... | 12/11/1984 |
| 4481075 | Sheet products and preparation process thereof New process, for preparing by means of a paper manufacturing technique, a thermoplastic sheet reinforced with cellulose fibres, wherein a thermoplastic powder and cellulose fibres are used in association, if necessary with other fibres, and consisting in ... | 11/06/1984 |
| 4445972 | Process for the continuous manufacture in an aqueous medium of sheets made of fibrous material and containing latex or similar and/or phenoplasts or aminoplasts, sheets obtained by said process and their possible re-use A new process for manufacturing sheets made of fibrous material containing latex is characterized in that the pulp containing the fibrous material is prepared in the following way:--adjustment of the pH between 4 and 5.5 and preferably between 4 and 4.5,-... | 05/01/1984 |
| 4425238 | Removal of anionic compounds from water A process for removing anionic compounds from water which is recycled in manufacturing processes, and from waste water, by adding (1) water-soluble products obtained by reacting an alkylating agent, having an aromatic substituent, with a cationic polyelec... | 01/10/1984 |
| 4419500 | Process for producing quaternary ammonium polyamino ureylene containing halohydrin functionality Described is a novel process for producing quaternary ammonium compounds containing halohydrin functionality from tertiary amines without the use of epihalohydrin as the quaternization agent. The process of this invention comprises reacting an amino compo... | 12/06/1983 |
| 4419498 | Process for producing quaternary ammonium amino polyamide containing halohydrin functionality Described is a novel process for producing quaternary ammonium compounds containing halohydrin functionality from tertiary amines without the use of epihalohydrin as the quaternization agent. The process of this invention comprises reacting an amino compo... | 12/06/1983 |
| 4370443 | Novel polymeric compounds, processes and methods of use Water-soluble triazine-nucleated polymeric quaternary ammonium compounds, which are prepared by the interaction of 2,4,6-trichloro-1,3,5-triazine with one molecular proportion of an aliphatic or cycloaliphatic diamine containing at least one tertiary nitr... | 01/25/1983 |
| 4348514 | Polyamines containing urea groups Non-crosslinking, water-soluble polyamines which can be obtained by reacting (A) basic polyureas which have been prepared by condensation of ureas with polyamines containing at least three amino groups, of which at least one is a tertiary amino group, or ... | 09/07/1982 |
| 4308094 | Diaphragm for speaker and method of producing same A diaphragm for a speaker obtained by forming a diaphragm base by screen processing a mixture of carbon fiber, pulp and polyvinyl alcohol fiber as a binder in a manner similar to that employed for making paper, depositing a thermosetting resin on the diap... | 12/29/1981 |
| 4304873 | Preparation of expanded flexible polyurethane foam micro-bits The preparation of flexible polyurethane foam micro-bits by the comminution of a flexible polyurethane foam in the presence of a compatible protective cooling fluid under specific comminuting steps and conditions.... | 12/08/1981 |
| 4296012 | Sizing compositions incorporating ketene dimer This invention provides a sizing composition for cellulosic fiber sheets comprising water and finely divided solid particles dispersed in the water, said particles being a uniform mixture of about 40 to about 96% by weight of a ketene dimer and about 4 to... | 10/20/1981 |
| 4293378 | Enhanced wet strength filter mats to separate particulates from fluids and/or coalesce entrained droplets from gases A glass fiber filter mat possessing excellent wet strength which is in the form of a non-woven matrix of glass micro-fibers including polymer micro-bits derived, for example, from a non-brittle expanded, thermoplastic styrene polymer or a flexible foamed ... | 10/06/1981 |
| 4269887 | Ceramic fiber felt A ceramic fiber felt is obtained by mixing alumina crystalline ceramic fibers having at least about 60 weight percent of Al2 O3, the rest being SiO2 and impurities, and having a filament length ranging from 10 to 30 mm wit... | 05/26/1981 |
| 4256807 | Synthetic latex modified pulp insulated conductors A pulp insulated electric communications conductor in which the wood pulp fibers of the insulation are coated with an aqueous based cationic deposition aid polymer and then an aqueous based anionic latex polymer. In a process for applying a layer of insul... | 03/17/1981 |
| 4246066 | Method for producing fibrous sheet A fibrous sheet having a high strength and water resistance and having no resin specks on the surface can be produced by producing a sheet from a fiber slury by the known paper making process, to said fiber slurry being added a flocculate of chlorinated p... | 01/20/1981 |
| 4234378 | Magnet paper sheet and a method for manufacturing the same An improved method for manufacturing a magnet paper sheet which comprises: thoroughly mixing about 70-90 parts by weight of magnetoplumbite barium ferrite powder and/or magnetoplumbite strontium ferrite powder essentially consisting of particles of primar... | 11/18/1980 |
| 4210697 | Process for preparing hydrophobic porous fibrous sheet material of high strength and porosity and product A process is provided for preparing hydrophobic porous fibrous sheet material suitable for use as a filter due to its inertness, strength, resistance to deterioration at elevated temperatures, and porosity, comprising impregnating a porous fibrous substra... | 07/01/1980 |
| 4210692 | Overlay sheet and wood laminate The present invention relates to a novel sheet adapted to be adhered to and form the outer layer of a wood article, said sheet being made from a furnish comprising, for each 100 parts by weight, from about 10 to 25 parts synthetic pulp, 10 to 25 parts by ... | 07/01/1980 |
| 4191610 | Upgrading waste paper by treatment with sulfite waste liquor Fibrous materials are disclosed having incorporated therein upgraded waste sulphite liquor; the liquor is neutralized, e. g., with sodium borate, sodium aluminate, reacidified, if needed, with alum; the modified sulphite waste liquor of hardwoods as well ... | 03/04/1980 |
| 4158595 | Preparation of hydrophilic styrene maleic anhydride copolymer fibers for use in papermaking Hydrophilic fibers may be prepared by discharging a heated and pressurized dispersion of a styrene-maleic anhydride copolymer into a zone of reduced temperature and pressure, and then modifying the fibers so produced by treatment with an aqueous admixture... | 06/19/1979 |
| 4154647 | Preparation of hydrophilic polyolefin fibers for use in papermaking Hydrophilic polyolefin fibers may be prepared, for example, by discharging a heated and pressurized solution of an anionic polyolefin composition containing carboxylic functionality into a zone of reduced temperature and pressure, and then modifying the f... | 05/15/1979 |
| 4147682 | Additive composition for use in papermaking An additive composition for use in papermaking comprises a water-soluble polymer having in its molecule --COOH groups and/or --SO3 H groups, polyaluminum chloride and an aqueous solvent. Because of formation of a kind of crosslinking structure ... | 04/03/1979 |
| 4138419 | Cyclopentadiene derivative A novel cyclopentadiene derivative of the general formula: ##STR1## wherein R1 is hydrogen, a mono- to tetra-hydric alcohol moiety having 1 to 12 carbon atoms, a metal of Groups Ia, IIa and IIb of the Periodic Table, an ammonium group or a... | 02/06/1979 |
| 4133688 | Photographic carrier material containing thermoplastic microspheres A photographic carrier material comprising a cellulose sheet which is coated on both surfaces with a polyolefin resin and in which hollow, thermoplastic microspheres are uniformly mixed therein in an amount of from 0.5 - 5.0 weight percent.... | 01/09/1979 |
| 4121966 | Method for producing fibrous sheet A fibrous sheet bonded with a latex flocculate is produced by adding zinc white powders to a carboxyl modified anionic latex, adjusting the pH to at least 7, adding thereto a water soluble cationic polymer to obtain a latex flocculate, adding thus obtaine... | 10/24/1978 |
| 4064304 | Coated synthetic paper adapted for offset printing and method for production thereof A coated synthetic paper adapted for offset printing is produced from a base paper sheet comprising fibrous material, at least 5% by weight of which is formed of polyolefinic pulp fibrils which are formed from a polyolefinic polymer and a hydrophilic poly... | 12/20/1977 |
| 4057537 | Copolymers of L-(-)-lactide and epsilon caprolactone Copolymers which can be fabricated into films, fibers and structural shapes are prepared by copolymerizing an optically active lactide, i.e., L-(-)-lactide, and epsilon caprolactone in the presence of a tin ester of a carboxylic acid. A copolymer prepared... | 11/08/1977 |
| 4032394 | Method of making wet-pressed fiberboard of high resistance to bending Wet pressed fiber board material of high resistance to bending is produced by preparing a layer of fiber from a water suspension of the fiber, said layer being de-watered and pressed to form a coherent flat sheet, wherein raw material is distributed over ... | 06/28/1977 |
| 4011130 | Leather-like waterlaid sheets containing particulate fillers Waterlaid sheets comprising essential solids consisting of (I) elastomeric binder, and (II) nonelastomeric solids comprising inflexible, non-fibrous, rounded, particulate fillers and a fibrous reinforcing component. The waterlaid sheets are useful as subs... | 03/08/1977 |
| 3987139 | Process of forming synthetic fibers A process of preparing polymer fibers by adiabatically flashing an emulsion or dispersion of water or other suitable nonsolvent in molten polymer, the emulsion or dispersion including an emulsifying agent and a dispersing aid, at an elevated temperature a... | 10/19/1976 |
| 3933579 | Vesiculated polymer granules The invention relates to vesiculated polymer granules having a plurality of discrete internal vesicles whose walls are provided by said polymer, said granules having a mean diameter of 1-500 micron, the vesules having a maximum diameter of 20 micron and c... | 01/20/1976 |
| 3932363 | Polyamines containing acid groups Water-soluble polyamines which (a) have an average molecular weight of above 1,000 (b) contain at least one grouping of the formula in which Z denotes a --COOH or --SO3 H group and R represents an alkylene radical, possessing 1 to 7 C atoms, which is opt... | 01/13/1976 |
