Preparation of photosensitive polyaldehydes
US4075175A · kind A · utility
7Cited by
1References
9Claims
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Inventor
Key dates
| Filing date | Jan 21, 1977 |
| Grant date | Feb 21, 1978 |
| Priority date | — |
| Expiry date | Jan 21, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/0387
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Preparation of photosensitive polyaldehydes which have the formula: ##STR1## WHEREIN R is a photosensitive end group selected from ##STR2## R.sup.1 is H or n-alkyl of 1-5 carbon atoms, preferably H, R.sup.2 is n-alkanoyl of 1-4 carbon atoms, and PA1 n is a positive integer of about 10-4000, is provided. The polyaldehydes are prepared by the anionic polymerization of the appropriate aldehyde with an initiating amount of an alkali metal or tetraalkylammonium alkoxide of RO in the above formula. The polyaldehydes are useful in articles and methods of relief imaging and in lithographic plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.