	US 12,129,355 B2
	Method for manufacturing a luminescent horological component
Sophie Napoli, Neuchâtel (CH); and Nicolas François, Neuchâtel (CH)
Assigned to The Swatch Group Research and Development Ltd, Marin (CH)
Filed by The Swatch Group Research and Development Ltd, Marin (CH)
Filed on Apr. 14, 2022, as Appl. No. 17/720,705.
Claims priority of application No. 21178264 (EP), filed on Jun. 8, 2021.
Prior Publication US 2022/0389190 A1, Dec. 8, 2022
Int. Cl. C08K 5/00 (2006.01); B29B 7/00 (2006.01); B29B 7/90 (2006.01); B29C 39/00 (2006.01); B29C 39/42 (2006.01); C08K 3/00 (2018.01); C08K 3/013 (2018.01); C08K 7/00 (2006.01); G04B 19/00 (2006.01); G04B 19/30 (2006.01); G04B 19/32 (2006.01); B29K 63/00 (2006.01); B29K 105/00 (2006.01); B29L 31/00 (2006.01)

CPC C08K 5/0041 (2013.01) [B29B 7/90 (2013.01); B29C 39/003 (2013.01); B29C 39/42 (2013.01); C08K 3/013 (2018.01); B29C 2793/009 (2013.01); B29C 2795/007 (2013.01); B29K 2063/00 (2013.01); B29K 2105/0032 (2013.01); B29K 2995/0035 (2013.01); B29L 2031/739 (2013.01); C08K 2201/005 (2013.01)]

7 Claims

1. A method for manufacturing a luminescent horological component for a portable object comprising the following steps:

mixing an epoxy resin and a phosphorescent pigment in an amount of 40% by mass;

adding to the mixture a fluorescent pigment in an amount of 3% by mass;

optionally, adding silane to the mixture in an amount of 10% by mass;

adding a hardener and mixing everything mechanically to obtain a homogenous solution;

pouring under vacuum the solution obtained into a mould and cross-linking the solution to obtain a luminescent moulded part;

after hardening, removing the part from the mould and blanking it by laser to obtain the luminescent horological component.