Synthesis of α,ω-dicarboxyl oligoamide

Low Temperature Endotherm in Multiblock Terpoly(ester-b-ether-b-amide) Thermoplastic Elastomers

“…The lactam and the dicarboxylic acid were the substrates prepared in our laboratory for the synthesis of the a,x-dicarboxylic-oligolaurolactam (PA12) with the number-average molecular weight 2 000 g/mol. [13] Synthesis…”

Synthesis and mechanical and thermal properties of multiblock terpoly(ester-ether-amide) thermoplastic elastomers with variable molecular weight of ester block

“…The previous investigations carried out by Ukielski [12,[26][27][28][29][30][31][32][33] have demonstrated that the molar ratio of PTMO 1000 to PA 2000 should be varied between 2 and 3.5. This ratio determines a relatively small fraction of PBT …”

“…The following reagents were used: 1,4-butanediol (BD-1,4, Sigma-Aldrich, USA), dimethyl terephthalate (DMT, Chemical Plant ''Elana,'' Poland), poly(oxytetramethylene)diol with molecular weight 1000 g mol -1 (PTMO, Du Pont, USA), a,x-dicarboxylicoligo(laurolactam) with molecular weight 2250 g mol -1 prepared in our laboratory [26][27][28][29][30], a titanate catalyst (TiO 2 /SiO 2 , Sachtleben Chemic GmgH, Germany), thermal stabilizer (Irganox 1010, Ciba Geigy, Swiss).…”

“…Utilizing the major achievements of Laboratory of Elastomers and Fibers Technology in the synthesis of block polymers [12,[26][27][28][29][30][31][32][33], a series of thermoplastic elastomers were prepared via the reaction of a,x-dicarboxylicoligo(laurolactam) (PA12) with oligo(oxytetramethylene)-diol and with dimethyl terephthalate and 1,4-butanediol (formed during the synthesis of poly(tetramethylene terephthalate) block-PBT). The effect of variation of the molecular weight of PBT block on the properties of prepared terpolymers was investigated.…”

New multiblock terpoly(ester-ether-amide) thermoplastic elastomers

“…First attempts of a synthesis and the description of the properties of block terpoly(ester-ether-amide) (PE-b-POb-PA) elastomers with good performance properties have been recently undertaken [8][9][10] . It may be accepted that they are substantially (i. e. 30%) modified block copoly(ether-ester)s to the modification of which dicarboxylic amide block has been applied 11) .…”