Patents Represented by Law Firm Burgess, Dinklage & Sprung Burns, Doane, Swecker & Mathis
  • N(.beta.-chloro-propionyl or acryloyl)carbamyl or ureido piperazines
    Patent number: 4055431
    Abstract: This invention relates to new compounds of the formula ##STR1## m is 1 or 2, n is 2, 3, 4, 5 or 6, Z represents a polyamine radical containing a basic tertiary or a quaternary nitrogen atom. The compounds of formula (m) an useful as crosslinking agents. They are particularly useful for crosslinking gelatine, preferably gelatin present in layers of photographic material.
    Type: Grant
    Filed: April 29, 1976
    Date of Patent: October 25, 1977
    Assignee: Ciba-Geigy AG
    Inventors: Rolf Kyburz, Rainer Kitzing