POLYVINYL ACETAL AND HEAT-DEVELOPABLE PHOTOSENSITIVE MATERIAL
PROBLEM TO BE SOLVED: To provide polyvinyl acetal decreased in the content of an aldehyde, especially, 2-ethyl-2-hexenal, and to provide a heat-developable photosensitive material using the same. SOLUTION: Polyvinyl acetal of ≤80 ppm 2-ethyl-2-hexenal content is provided. The polyvinyl acetal can be...
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| creator | MATSUDA HIDEHIRO YOSHII SHIGEHARU |
| description | PROBLEM TO BE SOLVED: To provide polyvinyl acetal decreased in the content of an aldehyde, especially, 2-ethyl-2-hexenal, and to provide a heat-developable photosensitive material using the same. SOLUTION: Polyvinyl acetal of ≤80 ppm 2-ethyl-2-hexenal content is provided. The polyvinyl acetal can be obtained by, for example, performing acetalization reaction of an aldehyde with polyvinyl alcohol in the presence of an acid catalyst, which aldehyde has a ≤2,000 ppm 3-hydroxy-2-ethylhexanal content. The aldehyde having ≤2,000 ppm 3-hydroxy-2-ethylhexanal content can be provided by removing high boiling ingredients by distillation. COPYRIGHT: (C)2010,JPO&INPIT |
| format | Patent |
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SOLUTION: Polyvinyl acetal of ≤80 ppm 2-ethyl-2-hexenal content is provided. The polyvinyl acetal can be obtained by, for example, performing acetalization reaction of an aldehyde with polyvinyl alcohol in the presence of an acid catalyst, which aldehyde has a ≤2,000 ppm 3-hydroxy-2-ethylhexanal content. The aldehyde having ≤2,000 ppm 3-hydroxy-2-ethylhexanal content can be provided by removing high boiling ingredients by distillation. 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SOLUTION: Polyvinyl acetal of ≤80 ppm 2-ethyl-2-hexenal content is provided. The polyvinyl acetal can be obtained by, for example, performing acetalization reaction of an aldehyde with polyvinyl alcohol in the presence of an acid catalyst, which aldehyde has a ≤2,000 ppm 3-hydroxy-2-ethylhexanal content. The aldehyde having ≤2,000 ppm 3-hydroxy-2-ethylhexanal content can be provided by removing high boiling ingredients by distillation. 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SOLUTION: Polyvinyl acetal of ≤80 ppm 2-ethyl-2-hexenal content is provided. The polyvinyl acetal can be obtained by, for example, performing acetalization reaction of an aldehyde with polyvinyl alcohol in the presence of an acid catalyst, which aldehyde has a ≤2,000 ppm 3-hydroxy-2-ethylhexanal content. The aldehyde having ≤2,000 ppm 3-hydroxy-2-ethylhexanal content can be provided by removing high boiling ingredients by distillation. COPYRIGHT: (C)2010,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMISTRY CINEMATOGRAPHY COMPOSITIONS BASED THEREON ELECTROGRAPHY HOLOGRAPHY MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS THEIR PREPARATION OR CHEMICAL WORKING-UP |
| title | POLYVINYL ACETAL AND HEAT-DEVELOPABLE PHOTOSENSITIVE MATERIAL |
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