Quaternary ammonium polyarylamides, used to manufacture articles and adhere polyamide objects
June 11, 2013. 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 3356626 3574158 Absorbent fibers and process for their preparation Process for dyeing wet-spun aromatic polyamides in gel form Process for producing anisotropic dopes and articles thereof from benzoic acid derivative polymers Solvent system for difficultly soluble polymers Method for making polyamide anion solutions Process for adhering aramid polymers Absorbent products and their manufacture Wholly aromatic polyamide copolymer InventorsAssigneeApplicationNo. 073293 filed on 06/11/1993US Classes:264/204, Solidifying by evaporation of liquid solvent or liquid carrier156/243, Forming plural continuous web laminae156/308.6, With treating agent application to a surface162/157.3, Polyamide, polyester or polyurethane264/126, Of organic material264/184, Synthetic resin containing extrudant264/211.15, Plural treatment stages of zones264/331.19, Nitrogen containing (e.g., polyamide, polyurethane, etc.)264/341, Solvent polishing type264/343To swell or plasticizeExaminersPrimary: Thurlow, JefferyForeign Patent References
International ClassB29C 039/14AbstractQuaternary ammonium polyarylamides are provided that are useful in articles of manufacture that require minimal ionic impurities. The polyarylamides are produced by reacting certain polyamides together with quaternary ammonium bases of the formula R44 N+ X-, wherein each R4 is independently selected from hydrocarbyl or substituted hydrocarbyl, provided that at least one of the R4 groups contains at least one beta hydrogen atom. There is also provided the process for producing the polyarylamides, the process for making articles of manufacture from the polyarylamides, and a process for modifying the surfaces of such polyamides.Other References
Field of SearchSolidifying by evaporation of liquid solvent or liquid carrierSynthetic resin containing spinning solutions Plural treatment stages of zones Nitrogen containing (e.g., polyamide, polyurethane, etc.) Solvent polishing type To swell or plasticize To remove entrained material from article Synthetic resin containing extrudant WITH INCORPORATING DYE SUSCEPTIBLE MATERIAL OR DYEING WORKPIECE Of organic material With lamina formation by molding or casting Forming plural continuous web laminae With treating agent application to a surface Polyamide, polyester or polyurethane | |
