Compounds of formula I, uses as crosslinking agents or curing agents thereof, and resins obtained by using the compounds as crosslinking agents.
SYNTHESIS OF AND COMPOSITIONS CONTAINING DIAMINOACETALS AND DIAMINOKETALS
申请人:Pastine Stefan J.
公开号:US20150152043A1
公开(公告)日:2015-06-04
The present invention relates to the reduction of polycyano compounds to produce polyamines, in particular diaminoacetal and diaminoketal compounds, and their use as curing agents in epoxy resin compositions. The reduction with molecular hydrogen can be carried out using a metal catalyst selected from GROUP VIII and a catalytic promoter. The reduction can include anhydrous or aqueous ammonia. The reaction can be carried out in continuous and batch modes with catalyst and solvent recycling. The epoxy resin composition consisting of an epoxy resin and a polyamine curing agent that can be used in fiber-reinforced composite materials, coating materials, and the like.
US9631049B2
申请人:——
公开号:US9631049B2
公开(公告)日:2017-04-25
Synthesis of acetals containing a primary amino group
作者:N. A. Lobanova、V. K. Stankevich、B. F. Kukharev
DOI:10.1134/s1070428012100053
日期:2012.10
Amino acetals of the general formula MeCH(OR)(OXNH2) (R = Et, Bu, X = CH2CH2, CH2CH2CH2, CH2CMe2) were synthesized in 53–91% yield by acid-catalyzed reaction of N-(2-hydroxyethyl)-, N-(3-hydroxypropyl)-, and N-(2-hydroxy-1,1-dimethylethyl)-2,2,2-trifluoroacetamides with vinyl ethers, followed by removal of the trifluoroacetyl protection by alkaline hydrolysis.