C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 13/02 (2006.01) B41M 1/30 (2006.01) B41M 5/24 (2006.01) B41M 5/26 (2006.01) C08K 3/22 (2006.01) C08K 5/00 (2006.01) C08L 27/12 (2006.01) H01B 3/44 (2006.01) H01B 7/36 (2006.01)
Patent
CA 2046881
ABSTRACT OF THE DISCLOSURE A fluoropolymer composition which can be marked by a laser, e.g. a Nd:YAG laser, contains about 2 to about 7% of an energy absorber and about 1 to about 15% of a mark enhancing organic compound having a decomposition temperature above the processing temperature of the fluoropolymer, all percentages being by weight based on the weight of the fluoropolymer. The composition undergoes a visible change, preferably irreversible, when exposed to the laser. The fluoropolymer composition can comprise a surface layer, such as a coating, on an article, such as an electrical conductor. The fluoropolymer composition can itself be formed into a shaped article, in particular a heat recoverable article.
Lunk Hans E.
Tondre Stephen L.
Marks & Clerk
Raychem Corporation
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