2.4.4- Trimethylhexamethylene diamine

Amorphous PPA based on IPA and HMD have a low dimensional stability at elevated temperatures. To overcome this drawback, the partial replacement of HMD with an isomer mixture of 2,2,4-trimethylhexamethylene diamine and 2,4,4-trimethylhexamethylene diamine, respectively, has been proposed. PAs composed from adipic acid, TPA, and 4,4-dimethyl-1,7-heptanediamine are transparent [12]. In addition, 2-methyIpentamethyIenediamine, 2-ethyltetramethylenedianfine [10], and 3,3 -dimethyl-4,4 -diaminodicyclohexylmethane [14] are dianfines for transparent PAs. Also, the combination of MXDA and IPA results in transparent types. 

Hexanediamine, trimethyl. See Trimethylhexamethylene diamine Hexanedioic acid 1,6-Hexanedioic acid. See Adipic acid Hexanedioic acid, bis [4-ethenyioxy) butyi] ester. See Bis (4-vinyl oxy... 

Trimethylhexamethylene diamine Vestamin TMD 25637-84-7 Ablunol GDO Cegesoft FR 36 Cithrol GDO N/E Emerest 2419 Glyceryl dioleate Kessco Glycerol Dioleate Nikkol DGO-80 Nofable GO-902 Nofable GO-992 Priolube 1409 Rilanit GDO ZELEC GDO 25637-88-1 Dilauryl citrate... 

A number of copolyamides are manufactured commercially to suit various needs. One of them is a polyamide formed by condensation of trimethylhexamethylene diamine with terephthalic acid. The diamine is a mixture of 2,4,4 and 2,2,4 isomers ... 

Isophorone diamine (IPDA), bis(4-aminocyclohexyl)methane (PACM), and 1,2-diaminocyclohexane (1,2-DACH) are the principal commercial cycloaliphatic polyamine curing agents. IPDA is the largest volume cycloaliphatic amine. Commercial cycloaliphatic amines are formulated products. In addition to the cycloaliphatic amines, other components such as aliphatic amines and plasticizers are also included to improve RT cure speed and end-use properties. One popular formulation consists of IPDA used in combination with trimethylhexamethylene-diamines (TMDA) or meta-xylenediamine (MXDA), and plasticizers/accelerators such as nonyl phenol or benzyl alcohol. In some ambient cin-e coating applications, cycloaliphatic amines can be reacted with phenol and formaldehyde to form the Mannich base products, which have an internal phenol accelerator and cure readily at ambient temperatin-es. 

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