(19)

(11)

EP 4 463 523 A1

(12)

(43) Date of publication: 20.11.2024 Bulletin 2024/47 (21) Application number: 22702298.5 (22) Date of filing: 14.01.2022

(51) International Patent Classification (IPC):  C09K 21/14(2006.01) C08L 55/02(2006.01) C08L 85/02(2006.01) C08L 69/00(2006.01) C08L 25/12(2006.01) (52) Cooperative Patent Classification (CPC): C09K 21/14; C08L 69/00; C08L 85/02; C08G 79/04; C08L 2205/03   C-Sets: C08L 85/02, C08L 69/00, C08L 55/02; C08L 69/00, C08L 85/02, C08L 55/02; (86) International application number: PCT/GB2022/050078 (87) International publication number: WO 2023/135402 (20.07.2023 Gazette 2023/29)

(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 (71) Applicant: Polymer Compounders Ltd Meadowfield Durham DH7 8RL (GB)	(72) Inventors: HOULDER, Grahame Durham DH7 8RL (GB) BLAIR, Stephen Durham DH7 8RL (GB) (74) Representative: Mathys & Squire  The Shard 32 London Bridge Street London SE1 9SG London SE1 9SG (GB)