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Light-sensitive composition and light-sensitive lithographic printing plate containing o-quinonediazide compound, novolak resin, polymer and enclosure compound

  • US 5,723,253 A
  • Filed: 12/04/1995
  • Issued: 03/03/1998
  • Est. Priority Date: 12/05/1994
  • Status: Expired due to Fees
First Claim
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1. A light-sensitive composition containing an o-quinonediazide compound, a novolak resin and a polymer,characterized in that the polymer contains 3 to 40 mole % of a constitutional unit selected from the group consisting of constitutional units represented by the formulae (I), (II) and (III):

  • ##STR28## wherein R1 to R12 each represent a hydrogen atom, an alkyl group or a phenyl group;

    and the composition further comprises an enclosure compound which acts as a host compound capable of taking a chemical species therein as a guest compound.

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