FIELD: chemistry.
SUBSTANCE: polycarbonates and a substrate material are provided. The material contains fluorescent formations with the following diameter distribution: 8,0-≤10 mcm: 0.02-2.4 counts per g, >10-≤20 mcm: 0.02-2.4 counts per g, >20-≤30 mcm: 0.02-1.0 counts per g, >30-≤40 mcm: 0.02-0.6 counts per g, >40-≤50 mcm: 0.02-0.5 counts per g, >50-≤80 mcm: 0.02-0.4 counts per g, >80-≤200 mcm: 0.02-0.4 counts per g, >200-≤400.0 mcm: 0.02-0.2 counts per g.
EFFECT: fewer defective items when making optical data media from the disclosed material.
6 cl
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