Novel Epoxy Based Polyamides—I

Abstract

Novel bis ester namely I , 1 '-(1-methylethylidene) bis[4-( 1-( 1 -imino-l-ethyl benzoate)-2-propanolyloxy]benzene was prepared by the reaction of epoxy resin, diglycidyl ether of bisphenol-A-(DGEBA) and 4-amino ethyl benzoate. The polyamides (PAS) were prepared by the condensation of bis ester derivative with various aliphatic diamines viz., 1 .Zethylene diamine (EDA), 1,3-propylene diamine (PDA), 1 ,Cbutylene diamine (BDA) and 1,6-hexamethyIene diamine W D A ) . The resultant novel epoxy resin based PAS were characterized by infrared spectroscopy and number average molecular weight ( a n ) . As produced, polyamides may act as epoxy curing agent, the kinetic study of the PA-epoxy resin system has been established by differential scanning calorimetty (DSC) and the kinetic parameters have been evaluated. Neat PA-epoxy cured products have also been characterized by thermogravimetric analysis (TGA).KEY WORDS 4-amino ethyl benzoate epoxy resin, polyamides, aliphatic diamines. thermogravimetric analysis.

Coating Properties of Di- and Tri-functional Epoxy Resin Using Novel Epoxy Based Polyamide as Curing Agent

“…The curing temperatures were decided from the evaluation of dynamic scans obtained from differential scanning calorimetry (DSC) [7].…”

“…88 to 9OOC) [lo]. The bisester derivative and two polyamides were prepared by the methods described in our earlier communication [7].…”

“…The great deal of work on epoxy resin based polyamide has been carried out in our laboratory [7]. The work was mainly based on curing study of epoxy resin (DGEBA) using epoxy resin based polyamides as curing agent.…”

A study on glass fiber reinforced composites from 2,3-epoxypropyl-3-(2-furyl) acrylate and methyl methacrylate

“…In continuation to our previously reported copolymerization of 2,3-epoxypropyl-3-(2-furyl) acrylate (EPFA) with acrylonitrile (AN) and with styrene [20,21], the copolymerization of EPFA and methyl methacrylate (MMA) was planned to synthesize a novel prepolymer containing a furan moiety, in addition to an epoxy ring, which could be cured to the infusible mass by using different curing agents. Various crosslinking agents such as aliphatic diamines, triamines, tetraamines, aromatic diamines, acid anhydride polyamides, Lewis acids and bases are used to crosslink the epoxy resin [22][23][24][25][26]. A literature survey reveals that many formulations containing furans as pendant groups were modified by the DielsAlder reaction, using active dienophile maleic anhydride (MAn), which resulted in alternate copolymers [27].…”

Study on Novel Polyamides Based on Ester Terminated Epoxy Resin

“…The ring opening reaction of epoxide with amines and alcohols is well established [5]. We have reported the reaction of epoxy resin with 4-amino ethyl benzoate yielding the bisester derivative [6]. This bisester, when condensed with various diamines (4,4 -diamino diphenyl methane (DDM), 4,4 -diamino diphenyl sulfone (DDS) and benzidine (Ben)) gave polyamides (PAs) [7].…”