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    • 86. 发明授权
    • Substantially pure diol and triol stereoisomers, method of preparation
and polymers thereof
    • 基本纯二醇和三醇立体异构体,制备方法及其聚合物
    • US5280096A
    • 1994-01-18
    • US922716
    • 1992-07-31
    • Cary J. MorrowJoe S. Wallace
    • Cary J. MorrowJoe S. Wallace
    • C12P7/18C12P7/22C12P11/00C12P17/00C12P41/00C08F12/02C08F112/02
    • C12P7/22C12P11/00C12P17/00C12P41/004C12P7/18
    • Optically active polymers are of the formula ##STR1## wherein R and R.sup.1 are different from each other and are selected from the group consisting of (C.sub.1 -C.sub.20)alkyl, (C.sub.2 -C.sub.20)alkenyl, (C.sub.2 -C.sub.20)alkynyl, (C.sub.3 -C.sub.22) cycloalkyl and (C.sub.6 -C.sub.22)aryl, the alkyl, alkenyl and alkynyl further including an atom selected from the group consisting of N, O and S in the chain, the alkyl, alkenyl and alkynyl further including a substituent selected from the group consisting of (C.sub.1 -C.sub.4)alkyl and halogen atoms, the cycloalkyl and aryl further including an atom selected from the group consisting of N, O and S in the ring, and the cycloalkyl and aryl further including a substituent selected from the group consisting of (C.sub.1 -C.sub.10)alkoxy, aryloxy, halogen atoms, NO.sub.2 and NHCOR.sup.4 wherein R.sup.4 is selected from the group consisting of (C.sub.1 -C.sub.6)alkyl, (C.sub.2 -C.sub.6)alkenyl, (C.sub.2 -C.sub.6)alkynyl and (C.sub.6 -C.sub.10)aryl; R.sup.2 is selected from the group consisting of --CO--, --CO--R.sup.3 --CO--, (CH.sub.2).sub.q, --C.sub.6 H.sub.4 --, 4,4'-biphenylene and --OCNH--R.sup.3 --NHCO-- wherein R.sup.3 is selected from the group consisting of (C.sub.1 -C.sub.10)alkyl, (C.sub.2 -C.sub.10)alkenyl, (C.sub.2 -C.sub.10)alkynyl, (C.sub.4 -C.sub.20)aryl and (C.sub.3 -C.sub.20)cycloalkyl and q is from 1 to 12; m is from 1 to 10,000; and p is from 0 to m. The polymer is formed from a stereochemically pure compound.
    • 光学活性聚合物具有下式:其中R和R 1彼此不同,并且选自(C 1 -C 20)烷基,(C 2 -C 20)烯基,(C 2 -C 20)炔基,(C 3 -C 20) -C 22)环烷基和(C 6 -C 22)芳基,所述烷基,烯基和炔基还包括在所述链中选自N,O和S的原子,所述烷基,烯基和炔基还包括选自 由(C 1 -C 4)烷基和卤素原子组成的基团,环烷基和芳基还包括在环中选自N,O和S的原子,并且环烷基和芳基还包括选自以下的取代基: 的(C 1 -C 6)烷氧基,芳氧基,卤素原子,NO 2和NHCOR 4,其中R 4选自(C 1 -C 6)烷基,(C 2 -C 6)烯基,(C 2 -C 6)炔基和(C 6 -C 10) )芳基; R2选自-CO - , - CO-R3-CO-,(CH2)q,-C6H4-,4,4'-联亚苯基和-OCNH-R3-NHCO-,其中R3选自 由(C1-C10)烷基,(C2-C10)烯基,(C2-C10)炔基,(C4-C20)芳基和(C3-C20)环烷基组成,q为1至12; m为1〜10,000; p为0〜m。 聚合物由立体化学纯的化合物形成。
    • 87. 发明授权
    • Soluble melanin
    • 可溶性黑色素
    • US5225435A
    • 1993-07-06
    • US674489
    • 1991-03-25
    • John M. PawelekSeth J. Orlow
    • John M. PawelekSeth J. Orlow
    • A23L1/275A61K8/72A61K31/785A61Q17/04C09B69/10C12P17/00C12P17/10
    • C12P17/00A23L5/43A23L5/47A61K31/785A61K8/72A61Q17/04C09B69/104C12P17/10
    • A melanin that is soluble in an aqueous solution at a pH of at least 5 to 9 at a temperature of 0 to 100.degree. C. The melanin is further characterized by being capable of being filtered through at least a 0.45 micron size filter. Still further, the melanin is characterized by having a molecular weight of greater than 10,000 kilodaltons. The melanin is useful for providing a naturally-appearing tan to mammalian skin and hair. Such melanin can be produced by combining dopachrome and 5,6-dihydroxyindole (or allowing dopachrome to spontaneously form 5,6-dihydroxyindole) and an appropriate enzyme or by combining 5,6-dihydroxyindole and 5,6-dihydroxyindole-2-carboxylic acid or by incubating 5,6-dihydroxyindole-2-carboxylic acid alone. The melanin is also useful for providing a sun-screen to mammalian skin and hair, to treat post-inflammatory hypo- and hyperpigmentation, to tint glass and plastic, to protect industrial materials against ultraviolet damage, and as a coloring agent in foodstuffs such as coffee, tea, soda, whiskey and liquors.
    • 在0至100℃的温度下,在至少5至9的pH下可溶于水溶液的黑色素。黑色素的进一步特征在于能够通过至少0.45微米尺寸的过滤器过滤。 此外,黑色素的特征在于具有大于10,000千道尔顿的分子量。 黑色素可用于向哺乳动物皮肤和头发提供天然存在的棕褐色。 这种黑色素可以通过组合多巴色胺和5,6-二羟基吲哚(或允许多巴色素自发形成5,6-二羟基吲哚)和合适的酶或通过将5,6-二羟基吲哚和5,6-二羟基吲哚-2-羧酸 或通过单独孵育5,6-二羟基吲哚-2-羧酸。 黑色素还可用于向哺乳动物皮肤和头发提供防晒剂,以治疗炎症后期和色素沉着过度,使玻璃和塑料变色,以保护工业材料免受紫外线损伤,以及作为食品中的着色剂,例如 咖啡,茶,苏打水,威士忌和烈酒。