Patent · US Active

Process for preparing a hydroxy compound by means of decarboxylation

US11319270B2 · kind B2 · utility

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18Claims

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Assignee

Covestro Intellectual Property GmbH & Co. KG · DE

Inventors

Natalie Bittner · Frechen, DE
Jens Langanke · Mechernich, DE
Niklas Meine · Mülheim an der Ruhr, DE
Jan Heijl · Loferer, DE

Key dates

Filing date	Dec 2, 2019
Grant date	May 3, 2022
Priority date	—
Expiry date	Dec 2, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/52
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a process for preparing a specific hydroxy compound by means of decarboxylation of a specific carboxylic acid compound or a salt of said carboxylic acid compound, to a method for preparing a diaryl carbonate, a bisphenol or a polycarbonate, a diaryl carbonate or bisphenol, a polycarbonate, and to a method for adjusting the isotope ratio of C14 to C12 in a polymer. A specific solvent is used during decarboxylation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.