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UV-Schutzlacke für CD-R

Key technologies for CD-R

• Suitable adhesion to Silver layer
• Excellent durability
• Less color change under room light
• Low skin irritation
• Cost performance

CD-R protective laquer changes its color from clear to yellow by aging under room light or natural light. It's probably caused by Silver.

DIC's CD-R laquer is designed to prevent the yellowing problem.

Technical Information

    SD-2407   SD-390
Before curing:        
Color
Viscosity
Refractive Index
Surface curing speed		   Pale yellow
36 mPA.s
1.474
0.04 J/cm²		   Pale yellow
38 mPa.s
1.487
0.07 J/cm²
After curing:        
Tg
Modulus
    30°C
    50°C
    75°C
   100°C
 
Shrinkage on curing		   72°C
 
1150 MPa
   660 MPa
   290 MPa
   170 MPa
 
9.8%		   72°C
 
1170 MPa
   800 MPa
   370 MPa
   100 MPa
 
9.8%