(19)
(11) EP 4 323 452 A1

(12)

(43) Date of publication:
21.02.2024 Bulletin 2024/08

(21) Application number: 22719480.0

(22) Date of filing: 13.04.2022
(51) International Patent Classification (IPC): 
C08L 69/00(2006.01)
C08L 83/04(2006.01)
 C08K 3/36(2006.01)
(52) Cooperative Patent Classification (CPC):
C08L 69/005; C08K 3/36; C08K 2201/019; C08K 2201/006; C08K 2201/005
 
C-Sets:
C08L 69/005, C08L 83/04, C08L 51/04, C08L 25/12, C08K 3/36;
(86) International application number:
PCT/US2022/024542
(87) International publication number:
WO 2022/221363 (20.10.2022 Gazette 2022/42)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 13.04.2021 US 202163174146 P
18.05.2021 EP 21174474

(71) Applicant: Covestro LLC
Pittsburgh, PA 15205 (US)

(72) Inventors:
  • ROGUNOVA, Marina
    Pittsburgh, Pennsylvania 15241 (US)
  • MONTGOMERY, Michelle L.
    Pittsburgh, Pennsylvania 15205 (US)

(74) Representative: Levpat 
c/o Covestro AG Gebäude K12
51365 Leverkusen
51365 Leverkusen (DE)

   


(54) POLYCARBONATE BLEND COMPOSITIONS HAVING IMPROVED WEATHERABILITY AND SCRATCH RESISTANCE