Pentamines aliphatic

The most widely used epoxy systems are those which are based on pure epoxy resins, hardened with a curing agent. Curing of epoxy resins containing two epoxy groups per molecule can be readily accomplished by the addition of primary polyamines, such as ethylene diamine, diethylene triamine, triethylene tetramine, tetra-ethylene pentamine, etc. Aliphatic polyamines produce cured resins with the greatest chemical resistance. However, these systems have inadequate durability, weather resistance and film-forming properties. They are sensitive to humidity, errors in addition rates are quite possible, and the catalysts are relatively toxic. [Pg.40]

Aliphatic primary amines. Common examples are diethylene triamine (DETA), tetraethylene pentamine (TEPA), n-aminoethyl piperazine, and isophorone diamine. They give good room-temperature cure at stoichiometric ratios, but have poor HDT, inconvenient mix ratios, high peak exotherm, and are strongly irritant. Isophorone diamine produces very light colored mixes with good color stability. [Pg.814]

Many different aliphatic and aromatic polyamines are available for cross-linking epoxy resins. Some of these are ethylenediamine, diethylene triamine, triethylene tetramine, tetraethylene pentamine, and many others. Among the aromatic polyamine are / -phenylene diamine, /n-phenylene diamine, 4,4 -diaminodiphenyl-methane, and diaminodiphenylsulfone. [Pg.477]

The aliphatic polyamines most commonly used to cure epoxides are diethyleunine triamine (DETA) and triethylene tetramine (TETA). These are both pungent, low viscosity hquids and they are commonly used with the diglycidyl ether of bisphenol A type resins, where rapid low temperature cures are required. Three other commonly used poly amines are ethylene diamine (EDA), tetramethylene pentamine (TEPA) and diethylaminopropylamine (DEAPA)... [Pg.109]

With aliphatic pentamines Ni(H2NCH2CH2NHCH2CH2NHCH2CH2 room 3.16 Farad octahedral coordination suggested 74S39... [Pg.362]