公开(公告)号：US20240294451A1

公开(公告)日：2024-09-05

申请号：US18258626

申请日：2021-12-21

Applicant: NOVAMONT S.P.A.

Inventor： Marco COTTI COMETTINI ,  Lorenzo QUATRALE

IPC: C07C29/80 ,  C07C29/143 ,  C07C29/88

CPC classification number: C07C29/80 ,  C07C29/143 ,  C07C29/88

Abstract: Process for purifying a mixture of a diol and an acetal, comprising hydrolysing the mixture with formation of the relative aldehydes/ketones and diols; and reducing the aldehydes/ketones present in the hydrolysis product by adding a reducing agent, resulting in a diol of the same species as present in the starting mixture.

公开(公告)号：US20240182398A1

公开(公告)日：2024-06-06

申请号：US18550710

申请日：2022-03-15

Applicant: NOVAMONT S.P.A.

Inventor： Luigi CAPUZZI ,  Francesca DIGIOIA ,  Lorenzo QUATRALE

IPC: C07C51/09 ,  C07C51/02 ,  C07C51/43 ,  C07C51/48

CPC classification number: C07C51/09 ,  C07C51/02 ,  C07C51/43 ,  C07C51/48

Abstract: Process for obtaining dicarboxylic acids from a mixture of triglycerides of dicarboxylic acids comprising the steps of a) hydrolysing said mixture of triglycerides of dicarboxylic acids in the presence of a basic aqueous solution, resulting in a hydrolysis product emulsion; b) acidifying the product from step a) until the emulsion is separated; c) separating an aqueous phase containing dicarboxylic acids in partly dissociated form and glycerol from the product of step b), d) acidifying the aqueous phase separated in step c) to a pH of 3 or below.