公开(公告)号：US20240376246A1

公开(公告)日：2024-11-14

申请号：US18691926

申请日：2022-09-09

Applicant: BASF SE

Inventor： Xiao Yu SUN ,  Dong LIANG ,  Chang Xi LI ,  Hai Sheng WU ,  Li Chao ZHU ,  Jia Yue HUANG ,  Zhi Zhong CAI

IPC: C08G18/02 ,  C08G18/20 ,  C08G18/32 ,  C08G18/48

Abstract: The present invention relates to a one-pot process for the production of poly carbodiimide cured polymers. comprising a reaction of (a) at least one polycarbodiimide with two or more carbodiimide functionalities per molecule. (b) at least one polyol with two or more hydroxyl functionalities per molecule, and (c) at least one cyclic carboxylic anhydride.

公开(公告)号：US20240174601A1

公开(公告)日：2024-05-30

申请号：US18282281

申请日：2022-03-08

Applicant: BASF SE

Inventor： Yang YANG ,  Xiao Yu SUN ,  Dong LIANG ,  Stefan BOKERN ,  Johannes BARTH ,  Peter DEGLMANN

IPC: C07C263/18 ,  C07C265/12 ,  C07D207/12 ,  C07D233/02 ,  C07D275/03

CPC classification number: C07C263/18 ,  C07C265/12 ,  C07D207/12 ,  C07D233/02 ,  C07D275/03

Abstract: This disclosure relates to a composition comprising (a) 4,4′-methylene diphenyl diisocyanate (4,4′-MDI), and (b) at least one heterocyclic compound comprising as ring moiety at least one structure of formula (I) as defined in the description. The heterocyclic compound can suppress the formation of 4,4′-MDI dimer and thus prevent the formation of insoluble solids and extend the shelf life of 4,4′-MDI.

公开(公告)号：US20230287166A1

公开(公告)日：2023-09-14

申请号：US18019255

申请日：2021-08-06

Applicant: BASF SE

Inventor： Stefan BOKERN ,  Dong LIANG ,  Martin HUFNAGEL ,  Xiao Yu SUN

IPC: C08G18/28

CPC classification number: C08G18/2855 ,  C08G2101/00

Abstract: The present invention is directed to a liquid, storage stable isocyanate composition (Q) comprising monomeric diphenyl methane diisocyanate (MDI) as component (q1) and an amide with a molecular weight of less than 200 g/mol as component (q2) in an amount of 0.1 to 5 wt.-% based on the sum of the weight of components (q1) and (q2) which adds up to 100 wt.-%, wherein the NCO-content is in the range of from 29.5 to 40.0 wt.-% based on the total weight of the respective isocyanate composition (Q). The present invention is also directed to a process for the manufacture of said liquid, storage stable isocyanate composition (Q) as well as the use of an amide with a molecular weight of less than 200 g/mol for the liquification of at room temperature solid isocyanates. Further, the present invention is directed to the use of an isocyanate composition (Q) of the invention for the synthesis of polyurethane foams, compact polyurethane elastomers or thermoplastic polyurethanes.