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. | |