Optical Industry
Use of Dewaxed Bleached Shellac in Optical Industry
Use of Dewaxed Bleached Shellac in
Optical Industry
Optical cements are widely used both for fixing lenses in the finished articles and also during the grinding operations.
A typical example is:
| Parts by weight | |
| Dewaxed Bleached Shellac | 50 |
| Butyl Alcohol | 45 |
| Castor Oil | 5 |
The solvent is allowed to evaporate and the residue stoved at 80ºC for 20 hours.
