公开(公告)号：US10144718B2

公开(公告)日：2018-12-04

申请号：US15551133

申请日：2016-02-16

Applicant: DSM IP ASSETS B.V.

Inventor： Barthel Engendahl ,  Roel Wim Wiertz ,  Jan Van Der Spoel

IPC: C07D307/33 ,  B01J21/18 ,  B01J21/06 ,  B01J23/46 ,  B01J35/00

Abstract: The invention relates to a continuous or repetitive batch process for the hydrogenation of levulinic acid (LA) or esters thereof to at least gamma valerolactone (GVL) in a reactor comprising a feed stream and an outlet stream, in the presence of a solid Ru catalyst, said process comprising (a) pretreating said solid Ru catalyst with a reductant; and (b) reacting levulinic acid with hydrogen and the pretreated solid Ru catalyst obtained in step (a) at a temperature and residence time suitable to form at least GVL, characterized in that the pretreatment is in the presence of a first solvent which comprises water. This process is stable and little or no Ru will leak form the support.

公开(公告)号：US09464023B2

公开(公告)日：2016-10-11

申请号：US14760885

申请日：2014-01-16

Applicant: DSM IP ASSETS B.V.

Inventor： Rudy Francois Maria Jozef Parton ,  Michele Catherine Christianne Janssen ,  Barthel Engendahl ,  Johannes Gerardus De Vries

IPC: C07C51/12 ,  C07D201/08 ,  C07C51/373 ,  C07C51/42

CPC classification number: C07C51/373 ,  C07C51/09 ,  C07C51/12 ,  C07C51/14 ,  C07C51/42 ,  C07C51/44 ,  C07C51/48 ,  C07D307/32 ,  C07C59/147 ,  C07C55/14 ,  C07C57/03

Abstract: The invention relates to a process for the production of 5-formylvaleric acid and adipic acid or esters thereof from an isomeric mixture of pentenoic acid or esters thereof said mixture comprising at least 4-pentenoic acid or esters thereof, and further comprising 3-pentenoic acid and/or 2-pentenoic acid or esters thereof.The process allows for efficient production of two different intermediates for producing polyamide using a single process, with good selectivity, little waste, in an economically efficient fashion. The process is very suitable to use an isomeric pentenoic acid mixture obtained from valerolactone, and can be used to produce renewable polyamide intermediates using a single process.

Abstract translation: 该方法允许以经济有效的方式有效地生产用于使用单一工艺生产聚酰胺的两种不同中间体，具有良好的选择性，少量的废料。 该方法非常适合于使用由戊内酯获得的异戊烯酸混合物，并可用于使用单一工艺生产可再生聚酰胺中间体。