Additive-charged porous carrier material
Patent 5496865 Issued on March 5, 1996. Estimated Expiration Date: 
December 5, 2014. 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.
December 5, 2014. 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 ReferencesLow modulus structural foam Process for preparing moulded bodies from modified thermoplastic polyamides Patent #: 4783511 InventorsAssigneeApplicationNo. 349396 filed on 12/05/1994US Classes:521/79, Extruding a solid polymer containing material to form a cellular product521/65, Process of forming a cellular product from an aqueous latex, aqueous dispersion, or aqueous emulsion containing a solid polymer; process of preparing a latex, dispersion, or emulsion containing a solid polymer which is designed to be formed into a cellular product, or composition thereof521/81, System contains a mixture of solid polymer or at least one solid polymer and at least one solid polymer-forming system521/94, Ingredient is a nitrogen containing compound521/97, Ingredient contains a carbon atom double-bonded to oxygen, e.g., carbon dioxide, carboxylic acid, etc.521/130, Ingredient contains a carbon atom double bonded to oxygen, e.g., carboxylic acid, etc.525/165, With polycarboxylic acid or derivative and a polyol at least one of which is saturated, a condensate or solid polymer thereof; or with solid polymer derived from at least one polycarboxylic acid or derivative and at least one polyol wherein at least one the reactants forming the solid polymer is saturated525/177, Solid polymer derived from ethylenic reactants only derived from unsaturated hydrocarbon525/183, Solid polymer derived from ethylenically unsaturated reactant only is derived from a reactant containing a carboxylic acid or derivative525/184, Solid polymer derived from ethylenically unsaturated hydrocarbon525/191Polymer mixture of two or more solid polymers derived from ethylenically unsaturated reactants only; or mixtures of said polymer mixture with a chemical treating agent; or products or processes of preparing any of the above mixturesExaminersPrimary: Seidleck, James J.Assistant: Truong, Duc Attorney, Agent or FirmForeign Patent References
International ClassC08J 009/00Foreign Application Priority Data1993-12-08 CHAbstractThe pourable porous carrier material is produced from at least one thermoplastic basic polymer with additives incorporated in the porous structure.First suitable foaming agents are added to the basic polymer, the mass is melted, mixed before and/or after melting. The mixture is then preferably extruded and cooled to form a pourable porous carrier material.At least one additive is added to the porous carrier material and mixed with this at a temperature (TM) below the melting point of the basic polymer but above the melting point of the additive.The porous carrier material has preferably ellipsoid pores which are brought into their longitudinal form during extrusion.Other References
Field of SearchExtruding a solid polymer containing material to form a cellular productProcess of forming a cellular product from an aqueous latex, aqueous dispersion, or aqueous emulsion containing a solid polymer; process of preparing a latex, dispersion, or emulsion containing a solid polymer which is designed to be formed into a cellular product, or composition thereof System contains a mixture of solid polymer or at least one solid polymer and at least one solid polymer-forming system Ingredient is a nitrogen containing compound Ingredient contains a carbon atom double-bonded to oxygen, e.g., carbon dioxide, carboxylic acid, etc. Ingredient contains a carbon atom double bonded to oxygen, e.g., carboxylic acid, etc. With polycarboxylic acid or derivative and a polyol at least one of which is saturated, a condensate or solid polymer thereof; or with solid polymer derived from at least one polycarboxylic acid or derivative and at least one polyol wherein at least one the reactants forming the solid polymer is saturated Solid polymer derived from ethylenic reactants only derived from unsaturated hydrocarbon Solid polymer derived from ethylenically unsaturated reactant only is derived from a reactant containing a carboxylic acid or derivative Solid polymer derived from ethylenically unsaturated hydrocarbon Polymer mixture of two or more solid polymers derived from ethylenically unsaturated reactants only; or mixtures of said polymer mixture with a chemical treating agent; or products or processes of preparing any of the above mixtures | |
