Kulkarni, Mild, Simple, and Efficient Method for N-formylation of Secondary Amines
via Reimer-Tiemann Reaction, Synth.
1]) characterization has been used to measure epoxy functional group reaction kinetics; however, the methods are not capable of providing clear distinction between epoxy, primary, and secondary amine
concentration changes due to band overlap.
The exchange route to Mannich bases employs tertiary amine Mannich bases derived from volatile secondary amines
such as dimethylamine.
Ammonia, primary and secondary amines
, amino acids, protein hydrolysates, proteins, ammonium-type surfactants, reactive methylene emollient esters, mercaptans, oxidizing ingredients and aldehyde-reactive additives must be avoided.
Indeed, his first tests confirmed that PEI's primary and secondary amines
would absorb the pollutant from air recirculating through a filter coated with the plastic.
Chevron HiPerCUT 6110 and Texaco Aquatex 6110 are low oil semi-synthetic, water miscible metalworking fluids that produce an ultra stable micro emulsion and are free from secondary amines
, providing excellent long life performance.
The rates of Michael addition of primary amines are higher than that of secondary amines
, therefore, Michael addition of the secondary amine
(piperazine) to HABP was proceeded for 48 h at 38[degrees]C to ensure the completion of the reaction.
Amine structure also plays a factor in the overall reactivity of the primary and secondary amines
Higher molecular weight nitrosamines and sterically hindered nitrosamines are not included on this list because the secondary amines
needed to generate these nitrosamines are not volatile enough to get airborne at ambient temperatures.
HAAs are based on sterically hindered primary amines, which are converted to secondary amines
by reaction with acrylate oligomers and/or epoxy resins.
These materials are alkanolamides, but they do not contain MEA, DEA or other secondary amines
Naugard family of antioxidants includes hindered phenolics and bisphenolics, secondary amines
, and phosphites, reportedly making it one of the broadest product lines in the industry.