Patent ID: 11970615
Assignee: COVESTRO INTELLECTUAL PROPERTY GMBH & CO. KG
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 9:
10. The process for producing polysiloxane-polycarbonate block co-condensates as claimed in claim 9, wherein
wherein component B) is a hydroxyaryl-terminated (poly)siloxane of formula (1),, wherein
R5 represents hydrogen or C1 to C4 alkyl,
R6 and R7 independently of one another represent C1 to C4 alkyl,
Y represents a single bond, —CO—, —O—, C1- to C5-alkylene, C2- to C5-alkylidene or a C5- to C6-cycloalkylidene radical which may be mono- or polysubstituted by C1- to C4-alkyl,
V represents oxygen, C2-C6 alkylene or C3- to C6-alkylidene,
when q=0, W represents a single bond,
when q=1, W represents oxygen, C2 to C6-alkylene or C3- to C6-alkylidene,
p and q are each independently 0 or 1,
o represents an average number of repeating units from 10 to 400, and
m represents an average number of repeating units from 1 to 10.