Inorganic substance composition and process for producing same
Patent 4049593 Issued on September 20, 1977. Estimated Expiration Date: 
September 20, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 20, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3711438 3770856 3875270 Process for continuously producing composite porous flakes Process of forming synthetic fibers Patent #: 3987139 InventorsAssigneeApplicationNo. 05/733919 filed on 10/19/1976US Classes:521/56, Particle which is expandible, process of preparing an expandible particle, or process of expanding a particle to form a cellular product264/13, By extrusion spraying or gravity fall through orifice264/45.3, Incorporating particulate material, fibers, or batts in a random distribution within a foamed body264/53, Liquid to gas phase change521/180, Cellular product derived from a phenol, phenol ether, or inorganic phenolate reactant521/917, SPECIALIZED MIXING APPARATUS UTILIZED IN CELL FORMING PROCESS521/92, Ingredient contains a metal atom521/98, Ingredient contains only C and H atoms, only C and halogen atoms, or only C, H, and halogen atoms524/409, Antimony524/423, Sulfate group, e.g., calcium sulfate, etc.524/424, Carbon atom DNRM524/425, Calcium carbonate, e.g., limestone, marble, etc.524/445, Clay, e.g., fullers earth, fire clay, etc.524/448, Diatomite or diatomaceous earth, e.g., kieselguhr, infusorial earth, etc.524/449, Mica524/451Talc (soapstone) DNRMExaminersPrimary: Derrington, JamesAttorney, Agent or FirmForeign Application Priority Data1972-12-29 JAAbstractAn inorganic substance composition comprising at least 50% by weight of a finely divided inorganic substance and 2 to 50% by weight of a fiber forming organic polymeric material and having a specific surface area of more than 2 m2 /g is described. The composition is prepared by preparing a liquid suspension from the inorganic substance, the organic polymeric material and a solvent; heating the liquid suspension to at least 100° C to dissolve the organic polymeric material in the solvent; and then extruding the heated liquid suspension at a pressure equal to or higher than the vapor pressure of the solvent through an orifice into a zone of a lower pressure to evaporate the solvent. | |
