Title: Amphoteric maleic anhydride copolymers and photographic emulsions employing the same

Abstract: A photographic silver halide emulsion wherein the emulsion binder comprises the reaction product of 1) a reactant having an amino, mercapto or hydroxy functionality and a cationic active group with 2) a copolymer of maleic anhydride and an ethylenically unsaturated copolymerizable monomer.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Sprung, Joseph A. (Binghamton, NY, US)
Panasik, Theodore (Vestal, NY, US)
Holmes, James J. (Endicott, NY, US)

Application Number: 639075
Filing Date: 1975-12-09
Publication_date: 1977-07-05
Assignee: GAF Corporation (New York, NY)
Primary Class(es): 430/627 430/628, 430/630
Other Classes:
US Patent Ref:

2957767	Oct, 1960	Williams	96/114.
3032522	May, 1962	Summers	96/114.
3877947	Apr, 1975	Tsuji et al.	96/114.
3879205	Apr, 1975	Fitzgerald et al.	96/114.
3929482	Dec, 1975	Ponticello et al.	96/114.

Other Refs:
Primary Examiner: Kimlin, Edward C.
Assistant Examiner:
Attorney: Kehm; Walter C., Comrie; Edward G.