Photographic materials with anti-static coatings
A photographic material comprises at least one silver halide colloid layer and at least one anti-static layer either coated on the silver halide layer or on the side distal to the silver halide layer the said anti-static layer comprising a colloid binder having therein a mixture of a polyoxyalkylene...
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Zusammenfassung: | A photographic material comprises at least one silver halide colloid layer and at least one anti-static layer either coated on the silver halide layer or on the side distal to the silver halide layer the said anti-static layer comprising a colloid binder having therein a mixture of a polyoxyalkylene compound and a polymeric salt. The binder is preferably gelatin and the polymeric salt may be the Li, Na, K, ammonium or triethylammonium salt of a polymer containing sulphonic acid units. It is thought that the polyoxyalkylene compound and the polymeric salt form a complex as has been suggested by P V Wright, British Polymer Journal I, 319 (1975). It has been found that this complex produces a much improved anti-static composition over the use of the equivalent amount of the two constituents used separately. |
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