Invention Grant
- Patent Title: 2-hydrocarbyl-3-(dihydroxyfluoresceinyl)phthalimidine monomers, methods of manufacture, and copolymers derived therefrom
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Application No.: US16428082Application Date: 2019-05-31
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Publication No.: US11078212B2Publication Date: 2021-08-03
- Inventor: Lohith Kenchaiah , Vijayakumar Venkatesh Sugur , Rashmi R. Deshpande , Hariharan Ramalingam , James Alan Mahood
- Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
- Applicant Address: NL Bergen Op Zoom
- Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
- Current Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
- Current Assignee Address: NL Bergen Op Zoom
- Agency: Cantor Colburn LLP
- Priority: EP18181020 20180629
- Main IPC: C07D491/107
- IPC: C07D491/107 ; C08G64/30
Abstract:
A purified 2-hydrocarbyl-3-(dihydroxyfluoresceinyl)phthalimidine compound of formula (I): wherein R is a C1-25 hydrocarbyl; each occurrence of R2 and R3 is independently a halogen or a C1-25 hydrocarbyl; p is 0 to 4; and each q is independently 0 to 3; and wherein the purified 2-hydrocarbyl-3-(dihydroxyfluoresceinyl)phthalimidine compound of formula (I) has a purity of greater than 99.4%, as determined by high performance liquid chromatography.
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