Diazotype compositions with improved printing performance
US4401744A · kind A · utility
1Cited by
10References
30Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 6, 1981 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | May 6, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/61
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Disclosure is made of a light-sensitive diazo coating composition and a light-sensitive diazotype reproduction material comprising a base with at least one coating layer comprising a light sensitive diazo compound, coupling component, a stabilizing acid and salt, and a development accelerating and stabilizing composition of 1,3-dimethylurea with urea or with thiourea, which also improves sensitizing solution compatibility and increases printing speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.