US 11,718,749 B2
Polycarbonate composition
Zhenyu Huang, Shanghai (CN); and Hao Han, Shanghai (CN)
Assigned to Covestro Deutschland AG, Leverkusen (DE)
Appl. No. 16/650,562
Filed by Covestro Deutschland AG, Leverkusen (DE)
PCT Filed Aug. 31, 2018, PCT No. PCT/CN2018/103578
§ 371(c)(1), (2) Date Mar. 25, 2020,
PCT Pub. No. WO2019/062472, PCT Pub. Date Apr. 4, 2019.
Claims priority of application No. 201710903032.6 (CN), filed on Sep. 28, 2017.
Prior Publication US 2021/0198481 A1, Jul. 1, 2021
Int. Cl. C08L 69/00 (2006.01); C08K 5/5399 (2006.01); C08L 83/10 (2006.01); C08G 64/18 (2006.01)
CPC C08L 69/00 (2013.01) [C08G 64/186 (2013.01); C08K 5/5399 (2013.01); C08L 83/10 (2013.01); C08L 2205/02 (2013.01); C08L 2205/035 (2013.01)] 17 Claims
 
1. A polycarbonate composition, comprising
A) 8-70 wt. % of a polycarbonate component,
B) 40-90 wt. % of a polysiloxane-polycarbonate copolymer component,
wherein the siloxane blocks of the polysiloxane-polycarbonate copolymer are derived from the corresponding dihydroxy polysiloxane (I):

OG Complex Work Unit Chemistry
wherein, in this formula (I),
R1 independently represents hydrogen atom, halogen atom, hydroxy group, alkyl group having 1 to 20 carbon atoms, alkoxy or aryl group;
R2 independently represents hydrocarbon group having 1 to 13 carbon atoms or hydroxy group;
R3 independently represents alkylene group having 2 to 8 carbon atoms;
m independently represents an integer of 0 to 4;
n independently represents an integer of 1 to 200;
A represents a structure of the following chemical formula (II):

OG Complex Work Unit Chemistry
X represents polynuclear arylene group which has 6 to 30 carbon atoms and is unsubstituted or substituted with halogen atom, alkyl group, alkoxy group, aryl group or carboxy group,
C) a flame retardant component, which comprises 0.5-6 wt. % of a cyclic phosphazene of formula (X)

OG Complex Work Unit Chemistry
wherein,
k represents 1 or an integer from 1 to 10,
having a trimer content (k=1) of from 60 to 98 mol %, based on component C,
and wherein,
R is in each case identical or different and represents an amine group; C1- to C8-alkyl, each optionally halogenated; C1- to C8-alkoxy; C5- to C6-cycloalkyl, each optionally substituted by alkyl, and/or by halogen; C6- to C20-aryloxy, each optionally substituted by alkyl, and/or by halogen, and/or by hydroxy; C7- to C12-aralkyl, each optionally substituted by alkyl, and/or by halogen; or a halogen group; or an OH group, and
D) an impact modifier component, which comprises 0.5-6 wt. % of methyl methacrylate-butadiene-styrene,
with the above weight percentages based on said polycarbonate composition as 100 wt. %.
 
13. A polycarbonate composition, consisting of:
A) 8-70 wt. % of a polycarbonate component,
B) 25-90 wt. % of a polysiloxane-polycarbonate copolymer component,
C) a flame retardant component, which comprises 0.5-6 wt. % of a cyclic phosphazene of formula (X)

OG Complex Work Unit Chemistry
wherein,
k represents 1 or an integer from 1 to 10,
having a trimer content (k=1) of from 60 to 98 mol %, based on component C,
and wherein,
R is in each case identical or different and represents an amine group; C1- to C8-alkyl, each optionally halogenated; C1- to C8-alkoxy; C5- to C6-cycloalkyl, each optionally substituted by alkyl, and/or by halogen; C6- to C20-aryloxy, each optionally substituted by alkyl, and/or by halogen, and/or by hydroxy; C7- to C12-aralkyl, each optionally substituted by alkyl, and/or by halogen; or a halogen group; or an OH group, and
D) an impact modifier component, which comprises 0.5-6 wt. % of methyl methacrylate-butadiene-styrene,
optionally, E) 0.05-1 wt. % of an anti-dripping agent, based on said polycarbonate composition as 100 wt. %, and
optionally lubricants, demolding agents, nucleating agents, stabilizers, antistatic agents, dyes, pigments, fillers and reinforcing agents,
with the above weight percentages based on said polycarbonate composition as 100 wt. %.