[EN] CROSS-LINKED HYALURONATE COMPOUNDS<br/>[FR] COMPOSES DE HYALURONATE RETICULE
申请人:GENZYME CORP
公开号:WO2003089476A1
公开(公告)日:2003-10-30
There is disclosed a cross-linked hyaluronate compound obtained by reacting a sodium hyaluronate compound with a polyfunctional aziridine compound as a cross-linking agent. The polyfunctional aziridine compound was added to hyaluronan of various molecular weights in an equivalent ratio of HA/AZ of 1:1 to 1:10, preferably, 1:3 to 1:10, more preferably, 1:3 to 1:5; most preferably 1:4 to 1:5.. The polymeric hydrogel compounds obtained are useful to prevent the formation of post-operative adhesions, designing tissue engineering applications, and the like.
[EN] MULTI-AZIRIDINE COMPOUND<br/>[FR] COMPOSÉ À PLUSIEURS MOTIFS AZIRIDINE
申请人:DSM IP ASSETS BV
公开号:WO2020020714A1
公开(公告)日:2020-01-30
The present invention relates to a multi-aziridine compound having: a) from 2 to 6 of the following structural units (A): (A) whereby R', R'', R1, R2, R3 and R4 are as defined herein m is an integer from 1 to 6; b) one or more linking chains wherein each one of these linking chains links two of the structural units A; and c) a molecular weight in the range from 600 Daltons to 5000 Daltons. The multi-aziridine compound can be used for example for crosslinking of for example carboxylic acid functional polymers dissolved and/or dispersed in an aqueous medium.
[EN] WATERBORNE CROSSLINKER COMPOSITION<br/>[FR] COMPOSITION D'AGENT DE RÉTICULATION À BASE D'EAU
申请人:COVESTRO NETHERLANDS BV
公开号:WO2021148563A1
公开(公告)日:2021-07-29
The present invention relates to a multi-aziridine crosslinker composition, characterized in that the multi-aziridine crosslinker composition is an aqueous dispersion having a pH ranging from 8 to 14 and comprises a multi-aziridine compound in dispersed form, wherein said multi-aziridine compound has: a. from 2 to 6 of the following structural units A: whereby R1 is H, R2 and R4 are independently chosen from H or an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms, R a is an aliphatic hydrocarbon group containing from 1 to 4 carbon atoms, m is 1, b. one or more linking chains wherein each one of these linking chains links two of the structural units A; and c. a molecular weight in the range from 500 to 10000 Daltons wherein the molecular weight is determined using MALDI-TOF mass spectrometry according to the description.