Polyester carbonates

Structural formula
General
Surname	Polyester carbonates
other names	Polyester cocarbonates; PEC;
CAS number	350244-52-9 (unspecific)
Type of polymer	Thermoplastic
properties
safety instructions
GHS labeling of hazardous substances	no classification available
	no classification available
H and P phrases	H: see above
	P: see above
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Polyester carbonates ( abbreviation PEC ) belong to the group of thermoplastics and are similar to polycarbonates (PC). As the name suggests, the macromolecular chains of polyester carbonate contain both polycarbonate and polyester structures .

Manufacturing

Usually polyester carbonates ( 4 ) by cocondensation of z. B. Bisphenol A ( 1 ), phosgene (COCl ₂ ) ( 2 ) and terephthalic acid dichloride ( 3 ) produced:

The composition of the product ( 4 ) is determined by the stoichiometric factors used for the starting materials ( 1 ), ( 2 ) and ( 3 ). The terephthalic acid dichloride used ( 3 ) in particular is responsible for the changes in the heat resistance compared to the polycarbonate and can therefore be set precisely and at the same time variably.

use

Polyester carbonates are used for purposes where high heat resistance is required. Classic uses are microwave dishes, hairsticks and headlight reflectors, in which operating temperatures of approx. 140 ° C to 180 ° C and at the same time high strength are required. The PEC is traded under the following names:

Lexan PPC, (GEP)
Ardel (BP-Amoco)
Apec HT

Individual evidence

^ ^A ^b T. Hirth, P. Eyerer, P. Elsner (Eds.): Kunststoffe . 8th edition. Springer-Verlag, Heidelberg 2012, ISBN 978-3-642-16173-5 , p. 769 .
↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
↑ ^a ^b ^c S. Koltzenburg, M. Maskos, O. Nuyken: Polymers: Synthesis, Properties and Applications . Springer-Verlag, Berlin / Heidelberg 2014, ISBN 978-3-642-34772-6 , p. 198.

[Elsner-1] A ^b T. Hirth, P. Eyerer, P. Elsner (Eds.): Kunststoffe . 8th edition. Springer-Verlag, Heidelberg 2012, ISBN 978-3-642-16173-5 , p. 769 .

[NV-2] This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.

[Koltzenburg-3] S. Koltzenburg, M. Maskos, O. Nuyken: Polymers: Synthesis, Properties and Applications . Springer-Verlag, Berlin / Heidelberg 2014, ISBN 978-3-642-34772-6 , p. 198.