Patent · US Expired

Photosensitive polyaldehydes and use in photoimaging

US4108839A · kind A · utility

6Cited by
2References
6Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 21, 1977
Grant dateAug 22, 1978
Priority date—
Expiry dateJan 21, 1997

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03F7/039
  • WIPO fieldMacromolecular chemistry, polymers
  • WIPO sectorChemistry

Abstract

Photosensitive polyaldehydes are provided 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 (a) n-alkanoyl of 1-4 carbon atoms or (b) n-alkanoyl of 1-4 carbon atoms or ##STR3## when R.sup.1 is H, and n is a positive integer of about 10-4000. 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.