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    • 1. 发明授权
    • Polymeric yellow colorant
    • 聚合黄色着色剂
    • US4250327A
    • 1981-02-10
    • US516
    • 1979-01-02
    • Daniel J. DawsonKenneth M. OttesonRoman Davis
    • Daniel J. DawsonKenneth M. OttesonRoman Davis
    • A23L1/275C09B69/10C07C143/55C07C69/353C07C101/26
    • C09B69/109A23L5/47
    • A group of water-soluble polymeric yellow colors and their preparation is disclosed. These colors comprise a plurality of units of a chromophore of the formula ##STR1## wherein M.sup.+ is a pharmaceutically acceptable monovalent cation attached directly to amine units present in a nonchromophoric polymer backbone. In a preferred embodiment of the invention the backbone is a homopolymer or copolymer of vinylamine. These colorants find special utility as nonabsorbable colorants for edibles, especially foods and beverages, where their yellow hue is an excellent color match for existing monomeric azo food colors such as tartrazine, and as components of acid-insoluble pigment lakes which are themselves suitable for use in edibles.
    • 公开了一组水溶性聚合黄色及其制备方法。 这些颜色包括多个单位的式IMAGF的发色团,其中M +是直接连接在非着色聚合物主链中的胺单元上的药学上可接受的一价阳离子。 在本发明的优选实施方案中,主链是乙烯基胺的均聚物或共聚物。 这些着色剂特别适用于食品,特别是食品和饮料的非吸收性着色剂,其中黄色色调与现有的单体偶氮食品颜色(如酒石黄)相当出色,可作为本身适合使用的酸不溶性颜料湖的成分。 在食物。
    • 2. 发明授权
    • Edible materials colored with polymeric yellow colorant
    • 用聚合黄色着色剂着色的食用材料
    • US4233328A
    • 1980-11-11
    • US948465
    • 1978-10-04
    • Daniel J. DawsonKenneth M. OttesonRoman Davis
    • Daniel J. DawsonKenneth M. OttesonRoman Davis
    • A23L1/275C09B69/10
    • C09B69/10A23L5/47
    • A group of water-soluble polymeric yellow colors and their preparation is disclosed. These colors comprise a plurality of units of a chromophore of the formula ##STR1## wherein M.sup.+ is a pharmaceutically acceptable monovalent cation, attached directly to amine units present in a nonchromophoric polymer backbone. In a preferred embodiment of the invention the backbone is a homopolymer or copolymer of vinylamine. These colorants find special utility as nonabsorbable colorants for edibles, especially foods and beverages, where their yellow hue is an excellent color match for existing monomeric azo food colors such as tartrazine, and as components of acid-insoluble pigment lakes which are themselves suitable for use in edibles.
    • 公开了一组水溶性聚合黄色及其制备方法。 这些颜色包括多个单位的式“IMAGE”的发色团,其中M +是药学上可接受的一价阳离子,其直接连接在存在于非着色聚合物主链中的胺单元上。 在本发明的优选实施方案中,主链是乙烯基胺的均聚物或共聚物。 这些着色剂特别适用于食品,特别是食品和饮料的非吸收性着色剂,其中黄色色调与现有的单体偶氮食品颜色(如酒石黄)相当出色,可作为本身适合使用的酸不溶性颜料湖的成分。 在食物。
    • 4. 发明授权
    • Preparing N-vinylformamide
    • 制备N-乙烯基甲酰胺
    • US4578515A
    • 1986-03-25
    • US618420
    • 1984-06-07
    • Daniel J. DawsonKenneth M. Otteson
    • Daniel J. DawsonKenneth M. Otteson
    • C07C233/00C07C103/127
    • C07C233/00
    • Ethylidene bisformamide is prepared by reacting, at elevated temperatures, dry acetaldehyde and formamide in the presence of an acidic catalyst and an ammonia scavenger such as acetic anhydride. The bisformamide is recovered as a bottoms product of high speed low residence time distillation techniques, e.g., wiped film evaporation. The resulting ethylidene bisformamide may be cracked to N-vinylformamide, which monomer is useful in the preparation of active polymers and copolymers, including poly(vinylformamide) which can be hydrolyzed to poly(vinylamine) salts by contact with acid. These amine salts can then be converted to the free amines, which are precursors of polymeric dyes and pharmaceuticals.
    • 亚乙基双甲酰胺通过在酸性催化剂和氨清除剂如乙酸酐的存在下在升高的温度下使干燥的乙醛和甲酰胺反应来制备。 双甲酰胺作为高速低停留时间蒸馏技术的底部产物回收,例如擦拭膜蒸发。 所得到的亚乙基双甲酰胺可以裂解成N-乙烯基甲酰胺,该单体可用于制备活性聚合物和共聚物,包括可通过与酸接触而被水解成聚(乙烯胺)盐的聚(乙烯基甲酰胺)。 然后可以将这些胺盐转化成游离胺,其为聚合染料和药物的前体。