First amorphous, then microcrystalline—but always crystal clear

With the takeover of the Chemicals division of Dynamit Nobel AG in 1988, Evonik acquired the transparent, amorphous polyamide TROGAMID^® T. Dynamit Nobel launched this first polymer of dimethyl terephthalate and trimethylhexamethylene diamine on the market as early as 1968. Substitution of the aromatic components by aliphatic monomers led in 1991 to transparent polyamides with inherently better UV resistance. Systematic selection of the cycloaliphatic diamine and 1,12-dodecanedioic acid monomers resulted in a crystallizable, permanently transparent polyamide, distinguished as crystalline by the name TROGAMID^® CX, in 1995.