公开(公告)号：US10889683B2

公开(公告)日：2021-01-12

申请号：US16463186

申请日：2017-12-04

Applicant: BASF SE

Inventor： Christian Gruenanger ,  Alexander Panchenko ,  Irene Gorman ,  Veit Stegmann ,  Johann-Peter Melder ,  Norbert Gutfrucht ,  Martin Ernst ,  Marc Hofmann

IPC: C08G59/50 ,  C07C209/26 ,  C07C209/84 ,  C07C211/36

Abstract: The present invention relates to the polyamines N,N′-diaminopropyl-2-methyl-cyclohexane-1,3-diamine and N,N′-diaminopropyl-4-methyl-cyclohexane-1,3-diamine and mixtures thereof, to the use thereof as curing agents for epoxy resin and to a curable composition comprising epoxy resin and these polyamines. Even at low temperatures this curing agent/the corresponding curable composition cures rapidly and is early-stage water resistant and is thus especially suitable for floor coatings. The invention further relates to the curing of this composition and the cured epoxy resin obtained by curing of this composition.

公开(公告)号：US10336668B2

公开(公告)日：2019-07-02

申请号：US15529133

申请日：2015-11-18

Applicant: BASF SE

Inventor： Jan-Oliver Weidert ,  Sandra Kramp ,  Regina Benfer ,  Alexander Panchenko ,  Andreas Weickgenannt ,  Norbert Gutfrucht ,  Klaus Breuer ,  Artur Kozicki ,  Ralph Busch

IPC: C07C7/04 ,  B01D3/00 ,  B01D3/10 ,  C07C209/86 ,  C07C211/36

Abstract: A process for preparing trans-enriched MDACH, including: distilling an MDACH starting mixture in the presence of an auxiliary, which is an organic compound having a molar mass of 62 to 500 g/mol, a boiling point at least 5° C. above the boiling point of cis,cis-2,6-diamino-1-methylcyclohexane, and 2 to 4 functional groups, each of which is independently an alcohol group or a primary, secondary or tertiary amino group. The MDACH starting mixture includes 0 to 100% by weight of 2,4-MDACH and 0 to 100% by weight of 2,6-MDACH, based on the total amount of MDACH present in the MDACH starting mixture. The MDACH starting mixture includes both trans and cis isomers. Trans-enriched MDACH includes 0 to 100% by weight of 2,4-MDACH and 0 to 100% by weight of 2,6-MDACH, where the proportion of trans isomers in the mixture is higher than the proportion of trans isomers in the MDACH starting mixture.