Compositions: coating or plastic – Coating or plastic compositions – Contains fireproofing or biocidal agent
Patent
1990-03-26
1991-09-17
Dixon, Jr., William R.
Compositions: coating or plastic
Coating or plastic compositions
Contains fireproofing or biocidal agent
106 1811, 106 1814, 106 1815, 106 1816, 106 1818, 252609, 524416, C09K 2104
Patent
active
050491873
ABSTRACT:
An aqueous solution useful as a coating composition to form a fire-retardant protective overcoat on a surface requiring such protection, such as one or both surfaces of a photographic element, comprises (1) a water-soluble film-forming cross-linkable copolymer of methyl vinyl ether and maleic anhydride, (2) a water-soluble polyhydric alcohol which serves to cross-link the copolymer when a coating of the composition is applied over the surface to be protected and dried, and (3) a water-soluble ammonium polyphosphate which reacts with the polyhydric alcohol to form a fire-retardant composition when the protective overcoat is exposed to the heat of a fire.
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Dixon Jr. William R.
Eastman Kodak Company
Green Anthony J.
Lorenzo Alfred P.
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