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1. (WO2003072645) TRANSPARENT THERMOPLASTIC COMPOSITION COMPRISING HOLLOW GLASS BEADS

Pub. No.:    WO/2003/072645    International Application No.:    PCT/FR2003/000524
Publication Date: Sep 4, 2003 International Filing Date: Feb 18, 2003
IPC: C08K 7/20
Applicants: ATOFINA
EDERLE, Yannick
BRUNEAU, Jean-Michel
Inventors: EDERLE, Yannick
BRUNEAU, Jean-Michel
Title: TRANSPARENT THERMOPLASTIC COMPOSITION COMPRISING HOLLOW GLASS BEADS
Abstract:
The invention relates to a thermoplastic composition comprising a (meth)acrylic (co)polymer and hollow glass bead particles, or a mixture of hollow glass bead particles and mineral and/or organic compound particles. According to the invention, said light-diffusing particles have an average size of between 0.5 µm and 200 µm, a refraction index which differs from that of the transparent thermoplastic material by at least ± 0.05, and are used in a quantity of 5 ppm to 1000 ppm by weight, in relation to the total composition. The invention also relates to the corresponding formed articles, such as plates for backlighting units.