Abstract: Novel photosensitive compositions based on azlactone derived polymers are described. The polymers have a hydrocarbyl backbone and pendant peptide groups with free-radically polymerizable functionality attached thereto, said polymer further comprising at least one oxyacid group or salt thereof, and optionally quaternary ammonium salt groups. A high speed durable printing plate having a mild pH aqueous developability is disclosed which incorporates these polymers in combination with a photoinitiator. The polymers are also useful as proofing films in graphic arts applications.
Type:
Grant
Filed:
February 21, 1991
Date of Patent:
August 10, 1993
Assignee:
Minnesota Mining and Manufacturing Company
Inventors:
M. Zaki Ali, Mahfuza B. Ali, Dean M. Moren