Light-sensitive polymeric diazonium condensates and reproduction compositions and materials therewith
US4436804A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1982 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Mar 18, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G61/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to novel condensation products, novel light-sensitive condensation products of aromatic diazonium salts, processes for preparation thereof, and to light-sensitive reproduction materials, which latter comprise a support having a reproduction layer containing at least one of the novel light-sensitive products. The light-sensitive condensation products are prepared by first homo-condensing non-diazo containing monomers of the structure R--M--R to form an oligomer. The oligomer is next condensed with an aromatic diazonium salt form the desired novel light-sensitive condensation product. R is a reactive substituent capable of undergoing condensation reactions in acid medium. M is selected from the group consisting of aromatic hydrocarbons, diaryl ethers, diaryl sulfides, diaryl amines, diaryl sulfones, diaryl ketones and diaryl diketones. The resulting novel light-sensitive condensation products have approximately four times the speed of prior art compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.