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Process for production of solid preparations of fotoativador containing zinc and / or aluminium - ftalocianinas sulfonated as fotoativadores, as well as prepared solid of fotoativador thus obtained
Process for production of solid preparations of fotoativador containing zinc and / or aluminium - ftalocianinas sulfonated as fotoativadores, as well as prepared solid of fotoativador thus obtained
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机译:包含锌和/或铝的维他命固体制剂的生产方法-磺胺化的维他命胺,以及由此制得的维他命固体
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摘要
The invention relates to a process for the preparation of solid photoactivator formulations containing sulfonated zinc or aluminum phthalocyanines. The process comprises passing a crude solution containing these compounds through a semipermeable asymmetrical membrane having a pore diameter of 1 to 500 ANGSTROM and drying the photoactivator solution obtained under mild conditions. The membrane consists of a basic structure of cellulose acetate, polyacrylonitrile or a copolymer of acrylonitrile and other ethylenically unsaturated monomers. This basic structure is modified in a specific manner with ionic groups. If desired, fillers and/or surfactants customarily employed in the detergent industry may be added to the concentrated solution before it is dried. The solid photoactivator formulations so obtained have excellent storage stability, are substantially non-hygroscopic, and contain exceedingly small amounts of undesirable organic impurities.
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