Photosensitive and heat-sensitive polymers, process for producin

Details Photosensitive and heat-sensitive polymers, process for producin Photosensitive and heat-sensitive polymers, process for producin

1990-07-20

1991-06-18

Fuller, Benjamin R.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

3461351, 346 76PH, 400120, 101470, 1014501, G01D 900, G01D 1510, B41M 500

Patent

active

050252666

ABSTRACT:
A photosensitive and heat-sensitive polymer having conjugated polyenes and sulfonic acid groups and an absorbance ratio of a strong band in the region of 1200 cm.sup.-1 to 1300 cm.sup.-1 assignable to sulfonic acid groups adjacent to conjugated polyenes of at least 3 sequence lengths to a strong band near 1050 cm.sup.-1 assignable to sulfonic acid groups in the IR spectrum of at least 0.6. The photosensitive and heat-sensitive polymer is obtained by the sulfonation of a polymer of an ethylenically unsaturated monomer having a number average molecular weight of at least 10,000 or a polymer having conjugated polyenes and a number average molecular weight of at least 10,000 and selected from the group consisting of (a) a homopolymer or copolymer of an olefin having 2 to 8 carbon atoms; (b) a homopolymer or copolymer of a halogenated olefin having 2 to 3 carbon atoms and a copolymer of the halogenated olefin and an olefin having 2 to 8 carbon atoms; (c) a homopolymer or copolymer of an olefin having a polar group and a copolymer of the olefin and an olefin having 2 to 8 carbon atoms; (d) a crosslinked aromatic polymer comprising 50 to 98% by mol of a monovinyl or monovinylidene aromatic monomer unit and 2 to 50% by mol of a polyvinyl monomer unit; and (e) a homopolymer or copolymer having conjugated polyenes of at least 3 sequence lengths. The photosensitive and heat-sensitive polymer is useful for information recording materials capable of being recorded by a laser beam or a thermal head for preparing printing plates, especially offset printing plates.

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