公开(公告)号：US20230374254A1

公开(公告)日：2023-11-23

申请号：US18031401

申请日：2021-10-12

Applicant: BASF SE

Inventor： Thomas Schaub ,  Paul Neumann ,  Mona Al Batal ,  A. Stephen K. Hashmi ,  Wei Zhou

IPC: C08J11/28

CPC classification number: C08J11/28 ,  C08J2377/06

Abstract: Spent polyamides are returned to the value chain by hydrogenating the spent polyamide in a hydrogen atmosphere in the presence of at least one homogeneous transition metal catalyst complex, wherein the transition metal is selected from metals of groups 7, 8, 9 and 10 of the periodic table of elements according to IUPAC, to obtain a polyamine and a polyol. The hydrogenation is carried out at a reaction temperature of at least 160° C. in a non-reducible solvent having a dipole moment in the range of 1·10−30 to 10·10−30 C·m.

公开(公告)号：US20230374195A1

公开(公告)日：2023-11-23

申请号：US18031396

申请日：2021-10-12

Applicant: BASF SE

Inventor： Thomas Schaub ,  Paul Neumann ,  Mona Al Batal ,  A. Stephen K. Hashmi ,  Wei Zhou ,  Andreas Thomas Haedler ,  Markus Schuette ,  Viktoriia Zubar

IPC: C08G18/82 ,  C08J11/28 ,  B01J31/18 ,  B01J31/20

CPC classification number: C08G18/82 ,  C08J11/28 ,  B01J31/189 ,  B01J31/20 ,  C08J2375/04 ,  B01J2531/821 ,  B01J2231/641

Abstract: Spent polyurethanes are returned to the value chain by hydrogenating the spent polyurethanes in a hydrogen atmosphere in the presence of at least one homogeneous transition metal catalyst complex, wherein the transition metal is selected from metals of groups 7, 8, 9 and 10 of the periodic table of elements according to IUPAC, to obtain a polyamine and a polyol. The hydrogenation is carried out at a reaction temperature of at least 120° C. in a non-reducible solvent having a dipole moment of 10-1030 C·m or less.