Patents by Inventor Paul J. Pigliacampi

Paul J. Pigliacampi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • PROCESS FOR PREPARING POLY(ALKYLENE FURANDICARBOXYLATE)
    Publication number: 20230265239
    Abstract: A process to prepare poly(alkylene furandicarboxylate) polymer is disclosed herein. In one embodiment, the process comprises a) contacting a mixture comprising furandicarboxylic acid dialkyl ester, a diol comprising ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,4-cyclohexanedimethanol, or mixtures thereof, and a metal catalyst at a temperature in the range of from about 140° C. to about 220° C. to form prepolymer, wherein the mole ratio of the furandicarboxylic acid dialkyl ester to the diol is in the range of from 1:1.3 to 1:2.2; b) performing polycondensation by heating the prepolymer under reduced pressure to a temperature in the range of from about 220° C. to about 260° C.
    Type: Application
    Filed: May 1, 2023
    Publication date: August 24, 2023
    Inventors: Hari Babu SUNKARA, Paul J. Pigliacampi
  • PROCESS FOR PREPARING POLY(ALKYLENE FURANDICARBOXYLATE)
    Publication number: 20210301080
    Abstract: A process to prepare poly(alkylene furandicarboxylate) polymer is disclosed herein. In one embodiment, the process comprises a) contacting a mixture comprising furandicarboxylic acid dialkyl ester, a diol comprising ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,4-cyclohexanedimethanol, or mixtures thereof, and a metal catalyst at a temperature in the range of from about 140° C. to about 220° C. to form prepolymer, wherein the mole ratio of the furandicarboxyic acid dialkyl ester to the diol is in the range of from 1:1.3 to 1:2.2; b) performing polycondensation by heating the prepolymer under reduced pressure to a temperature in the range of from about 220° C. to about 260° C.
    Type: Application
    Filed: June 14, 2021
    Publication date: September 30, 2021
    Inventors: Hari Babu Sunkara, Paul J. Pigliacampi
  • PROCESS FOR PREPARING POLY(ALKYLENE FURANDICARBOXYLATE)
    Publication number: 20200002471
    Abstract: A process to prepare poly(alkylene furandicarboxylate) polymer is disclosed herein. In one embodiment, the process comprises a) contacting a mixture comprising furandicarboxylic acid dialkyl ester, a diol comprising ethylene glycol, 1,3-propanediol, 1,4-butanediol, 1,4-cyclohexanedimethanol, or mixtures thereof, and a metal catalyst at a temperature in the range of from about 140° C. to about 220° C. to form prepolymer, wherein the mole ratio of the furandicarboxylic acid dialkyl ester to the diol is in the range of from 1:1.3 to 1:2.2; b) performing polycondensation by heating the prepolymer under reduced pressure to a temperature in the range of from about 220° C. to about 260° C.
    Type: Application
    Filed: February 23, 2018
    Publication date: January 2, 2020
    Inventors: Hari Babu Sunkara, Paul J. Pigliacampi