Location History:
- Allentown, PA (US) (1991 - 1994)
- Doylestown, PA (US) (2000)
Company Filing History:
Years Active: 1991-2000
Title: Innovations of James F Nangeroni
Introduction
James F Nangeroni is a notable inventor based in Allentown, PA (US). He has made significant contributions to the field of polymer chemistry, holding a total of 8 patents. His work primarily focuses on the development of processes for the production of poly(vinyl acetate) and poly(vinyl alcohol).
Latest Patents
One of his latest patents is titled "Continuous process for the preparation of poly(vinyl acetate)." This invention describes an improved method for the continuous production of poly(vinyl alcohol) by purifying poly(vinyl acetate) paste exiting from a polymerization reactor. The process involves dissolving the substantially pure poly(vinyl acetate) in a hydrolytic alcohol-containing solvent for subsequent saponification to produce poly(vinyl alcohol). The poly(vinyl acetate) paste, which contains poly(vinyl acetate), vinyl acetate, and solvent, is heated to a temperature above the glass transition temperature but below a temperature that would degrade the poly(vinyl acetate). This paste is then fed into a flashing area of an extruding devolatilization device, where vinyl acetate and solvent are flashed through vent ports and can be recycled to a polymerization reactor if desired. A substantially pure poly(vinyl acetate) melt exits the flashing area and is mixed with a hydrolytic alcohol-containing solvent to form a solution for subsequent processing in a saponification unit.
Another significant patent is "Reactive melt extrusion grafting of thermoplastic polyvinyl." This method outlines a process for preparing a compatible blend of polyolefin and thermoplastic polyvinyl alcohol. The steps include melting polyolefin in the initial elements of a melt extruder, adding and melt blending an unsaturated carboxylic acid or anhydride with the melted polyolefin downstream, adding peroxide to the melt blend, and grafting the unsaturated carboxylic acid or anhydride onto the polyolefin. Finally, thermoplastic PVOH is melt blended into the grafted polyolefin/unsaturated carboxylic acid or anhydride melt mixture.
Career Highlights
James F Nangeroni is currently employed at Air Products and Chemicals, Inc., where he continues to innovate in the field of polymer production. His expertise and contributions have made a significant impact on the industry.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.