IMIDOMETHYL DERIVATIVES OF 1,3,3-TRIMETHYLINDOLINO-SPIROPYRAN,申请号USD3671543-传众专利搜索

IMIDOMETHYL DERIVATIVES OF 1,3,3-TRIMETHYLINDOLINO-SPIROPYRAN

申请公布号：US3671543(A)

申请号：USD3671543

申请日期：1970.05.28

申请公布日期：1972.06.20

申请人：

SUMITOMO CHEM. CO. LTD.

发明人：KOICHL KOGA;MINORU HATORL;TAKASHI AKAMATSU

分类号：B41M5/15;(IPC1-7):C07D27/38

主分类号：B41M5/15

摘要：Novel imidomethyl or amidomethyl derivatives of 1,3,3-trimethylindolino-spiropyran are produced by reacting a 1,3,3-trimethylindolino-spiropyran derivative with an imidomethylating or amidomethylating agent in the presence of a condensing agent and optionally in a solvent. These novel compounds are adapted to be used as a coloring matter for pressure sensitive copy papers and particularly as one component of a coloring matter for black pressure sensitive copy papers.