申请人:Covestro Deutschland AG
公开号:US20190077953A1
公开(公告)日:2019-03-14
Compositions comprising
A) at least one polymer selected from the group consisting of aromatic polycarbonate and aromatic polyestercarbonate,
B) at least one polyester, wherein the polyester is derived from succinic acid and optionally further dicarboxylic acids and aliphatic, cycloaliphatic, araliphatic diols or aromatic diols,
C) at least one cyclic phosphazene of structure (IV)
wherein
R is in each case identical or different and represents
an amine radical,
in each case optionally halogenated C
1
- to C
8
-alkyl,
C
1
- to C
8
-alkoxy
in each case optionally alkyl- and/or halogen-substituted C
5
- to C
6
-cycloalkyl,
in each case optionally alkyl- and/or halogen- and/or hydroxyl-substituted C
6
- to C
20
-aryloxy,
in each case optionally alkyl- and/or halogen- and/or bromine-substituted C
7
- to C
12
-aralkyl,
a halogen radical or
an OH radical,
k is a whole number from 1 to 10
D) optionally graft polymer,
E) optionally vinyl (co)polymer and/or polyalkylene terephthalate,
F) optionally additives
and also the use of these flame-retarded polycarbonate/polyester compositions for producing molded articles and the molded articles themselves, wherein the polyester in the composition can be obtained or prepared preferably from renewable raw materials.