Compositions – Preservative agents – Anti-corrosion
Patent
1987-11-13
1990-03-13
Terapane, John F.
Compositions
Preservative agents
Anti-corrosion
252351, 252356, 430528, 430529, 430537, 525255, 525261, 525262, 525286, 5253273, B01F 1752, G03C 184, C08F26900
Patent
active
049081551
ABSTRACT:
A surface-active block copolymer which comprises chemically linked polymeric blocks (A) and (B), block (A) of said copolymer consisting of at least one homo- or copolymerized non-polar alpha,beta-ethylenically unsaturated monomer and block (B) of said copolymer is derived by polymerizing an alpha-beta ethylenically unsaturated monomer containing an epoxy group and transforming the epoxy group into an hydroxy-substituted ionic group, preferably an anionic group. These block copolymers are used as dispersing agents in aqueous dispersions, including polymeric latex dispersions, and as plasticizing agent in hydrophilic colloid layers, including colloid layers containing a dispersed light-sensitive silver halide emulsion or other auxiliary substances for photographic materials.
REFERENCES:
patent: 2810713 (1957-10-01), Melamed
patent: 2862893 (1958-12-01), Hwa
patent: 2949383 (1960-08-01), Blake
patent: 3730888 (1973-05-01), Buckman et al.
patent: 4199363 (1980-04-01), Chen
patent: 4657983 (1987-04-01), Skiscim
patent: 4820619 (1989-04-01), Sanada et al.
Chemical Abstracts, vol. 107, Acq. No. 225988f.
de Jaeger Nikolaas C.
Fayt Roger M.
Leemans Luc E.
Teyssie Philippe J.
Uytterhoeven Herman J.
Agfa-Gevaert N.V.
Daniel William J.
Geist Gary L.
Terapane John F.
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