Flake- or sliver-like porous structure of polymeric material and process of producing same, and process of producing sheet-like structure therefrom
Patent 4146510 Issued on March 27, 1979. Estimated Expiration Date: 
March 27, 1996. 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.
March 27, 1996. 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 2810646 3003304 3210239 3785919 3884030 3911070 3912665 3912666 Method for preparing a plastic relief printing plate Inorganic substance composition and process for producing same Patent #: 4049593 Inventors
AssigneeApplicationNo. 05/609442 filed on 09/02/1975US Classes:521/64, Removing a liquid to form a cellular product264/45.3, Incorporating particulate material, fibers, or batts in a random distribution within a foamed body264/53, Liquid to gas phase change521/143, From acyclic mono-unsaturated hydrocarbon as only reactant521/55, Treating a cellular solid polymer by adding a material thereto which forms a composition therewith521/80Including solid polymer formation in or during extruding stepExaminersPrimary: Anderson, PhilipAttorney, Agent or FirmInternational ClassesC08J 9/00 (20060101)D01D 5/11 (20060101) D01D 5/00 (20060101) Foreign Application Priority Data1971-11-12 JPAbstractFlake- or sliver-like porous structures of a polymeric material heavily loaded with a finely divided inorganic substance are prepared by spurting a mixture of the polymeric and finely divided inorganic components in a solvent. The products have many fine, irregular voids. The thickness of walls forming such voids is 5μ or less. The products are especially useful for producing sheet-like structures therefrom by beating and/or refining them followed by general paper making procedures. The sheets, when calendered, have a high initial modulus and improved dimensional stability. | |
