Polyvinyl butyral pellicle compositions
US5244952A · kind A · utility
1Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 1, 1991 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | May 1, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2329/14
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An improved pellicle for use in projection printing comprises a pellicle in which the transparent film is formed from a specific polyvinyl butyral resin from a casting composition which is a mixture of the specific polyvinyl butyral resin and dimethylformamide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.