TROGAMID Titel

AMORPHOUS And SemiCRYSTALLINE TROGAMID®

Glassclear and highly resistant

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.

Nomenclature of semi-aromatic/aliphatic amorphous polyamides

TROGAMID®

Nomenclature ISO 1043

Nomenclature ISO 1874

Monomers

T grades

PA 6-3-T

PA NDT/INDT

trimethyl hexamethylene diamine terephthalic acid

CX grades

not applicable

PA PACM 12

cycloaliphatic diamine dodecanedioic acid

Common transparent polyamides consist  in partially aromatic units that impart rigidity and high heat resistance. Our TROGAMID® T compounds are typical representatives of this group.




Replacing aromatic  constituents with aliphatic monomers improves the UV stability of transparent polyamides. TROGAMID® CX7323 is an example of this type of polyamides. By selecting specific monomers the crystallites are so small that they do  not scatter visible light, and the material appears transparent to the human eye—a property known as microcrystallinity.




TROGAMID® Care compounds were subject to specific evaluation. They are based on the semi-crystalline compounds.

TROGAMID® TTROGAMID® CXTROGAMID® Care