Patents by Inventor Montira UPRIJIT

Montira UPRIJIT 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).

  • Method for preparing poly(carbonate-etherimide) compound
    Patent number: 10759904
    Abstract: The present invention relates to a method for preparing poly(carbonate-etherimide) compound comprising polycarbonate segment as shown in the structure (A) and polyetherimide segment as shown in the structure (B). Said method does not contain a highly toxic phosgene in its operation, can be performed easily, and can be operated at not high temperature. wherein R1 represents aromatic with 6 to 30 carbon atoms or, optionally said aromatic is bonded with heteroatom; R2 represents aromatic with 6 to 30 carbon atoms or, optionally said aromatic is bonded with heteroatom; m is an integer from 1 to 15; and n is an integer from 1 to 10.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: September 1, 2020
    Assignee: PTT GLOBAL CHEMICAL PUBLIC COMPANY LIMITED
    Inventors: Supakanok Thongyai, Papapida Pornsuriyasak, Suchada Tang-Amornsuksan, Sarawut Lunvongsa, Montira Uprijit, Siriwanna Ounkaew
  • METHOD FOR PREPARING POLY(CARBONATE-ETHERIMIDE) COMPOUND
    Publication number: 20190202980
    Abstract: The present invention relates to a method for preparing poly(carbonate-etherimide) compound comprising polycarbonate segment as shown in the structure (A) and polyetherimide segment as shown in the structure (B). Said method does not contain a highly toxic phosgene in its operation, can be performed easily, and can be operated at not high temperature. wherein R1 represents aromatic with 6 to 30 carbon atoms or, optionally said aromatic is bonded with heteroatom; R2 represents aromatic with 6 to 30 carbon atoms or, optionally said aromatic is bonded with heteroatom; m is an integer from 1 to 15; and n is an integer from 1 to 10.
    Type: Application
    Filed: November 14, 2016
    Publication date: July 4, 2019
    Inventors: Supakanok THONGYAI, Papapida PORNSURIYASAK, Suchada TANG-AMORNSUKSAN, Sarawut LUNVONGSA, Montira UPRIJIT, Siriwanna OUNKAEW