Lactones of quinoline carboxylic acids
    1.
    发明授权
    Lactones of quinoline carboxylic acids 失效
    喹啉羧酸的内酯

    公开(公告)号:US4200751A

    公开(公告)日:1980-04-29

    申请号:US853781

    申请日:1977-11-21

    CPC分类号: B41M5/327

    摘要: Lactone electron donative color-forming agents of quinoline-carboxylic acid are disclosed having the general formulae (I) and (II) ##STR1## wherein A and B represent a variety of chemical moieties, X represents halo- or nitro- and n.sup.1 is an integer of 0-4. The color-forming agents are useful in recording materials of the pressure-sensitive and heat-sensitive varieties, and the like.

    摘要翻译: 公开了具有通式(I)和(II)的化合物,其中A和B代表多种化学部分,X代表卤代或硝基的喹啉羧酸的内酯电子给体形成剂 - 和n1是0-4的整数。 成色剂可用于记录压敏和热敏感品种的材料等。

    Recording material
    2.
    发明授权
    Recording material 失效
    录音材料

    公开(公告)号:US4330473A

    公开(公告)日:1982-05-18

    申请号:US210867

    申请日:1980-11-26

    CPC分类号: B41M5/1455 C09B11/24

    摘要: The present invention discloses novel fluoran compound useful as the lactone electron donative color-forming agents having the general formula: ##STR1## wherein, R.sub.1, R.sub.2 and R.sub.4 are respectively hydrogen, methyl or ethyl groups; R.sub.3 is hydrogen or a methyl group; and R.sub.5 is a phenyl group or a phenyl group substituted with from one to five methyl groups. The compound of the invention is soluble in aromatic solvents as well as in aromatic-aliphatic mixed solvents and also has excellent light fastness after developing color.

    摘要翻译: 本发明公开了可用作具有以下通式的内酯电子给体显色剂的新颖的荧烷化合物:其中R1,R2和R4分别是氢,甲基或乙基; R3是氢或甲基; R5是苯基或被1至5个甲基取代的苯基。 本发明的化合物可溶于芳族溶剂以及芳族 - 脂族混合溶剂,并且在显色后也具有优异的耐光性。

    Oxidative process for the preparation of copper quinolinate
    4.
    发明授权
    Oxidative process for the preparation of copper quinolinate 失效
    用于制备喹啉铜的氧化工艺

    公开(公告)号:US4420616A

    公开(公告)日:1983-12-13

    申请号:US236945

    申请日:1981-02-20

    CPC分类号: C07D213/803 C07D213/80

    摘要: A process for the preparation of copper quinolinate in which quinoline is oxidized by hydrogen peroxide in sulfuric acid in the presence of copper sulfate wherein the reaction is carried out at a pressure of less than 400 mm Hg. The reduced pressure enables the reaction to be performed at higher temperatures and with greater control; also the reaction time is shortened and the yield improved.Copper quinolinate is used to prepare quinolinic acid which is the starting material for some chromogenic materials used in the pressure-sensitive record material field.

    摘要翻译: 一种制备喹啉铜的方法,其中喹啉在硫酸铜存在下用硫酸中的过氧化氢氧化,其中反应在小于400mmHg的压力下进行。 减压使反应在更高的温度和更好的控制下进行; 反应时间也缩短,产率提高。 使用喹啉酸钾制备作为压敏记录材料领域中使用的一些显色材料的起始原料的喹啉酸。

    Process for the preparation of copper quinolinate
    5.
    发明授权
    Process for the preparation of copper quinolinate 失效
    制备喹啉铜的方法

    公开(公告)号:US4316026A

    公开(公告)日:1982-02-16

    申请号:US177694

    申请日:1980-08-12

    CPC分类号: C07D213/80

    摘要: A process for the preparation of copper quinolinate in which quinoline is oxidized by hydrogen peroxide in 10 to 30% sulfuric acid in the presence of copper sulfate at a temperature of 55.degree. to 75.degree. C., the molar ratio of sulfuric acid to quinoline being greater than 1:1. The concentration and amount of sulfuric acid enable greater control of the reaction temperature and result in copper quinolate in improved yield and purity.Copper quinolinate is used to prepare quinolinic acid which is the starting material for some chromogenic materials used in the pressure-sensitive record material field.

    摘要翻译: 一种制备喹喔啉的方法,其中在硫酸铜存在下,在55〜75℃的温度下,在10〜30%的硫酸中,喹啉被过氧化氢氧化,硫酸与喹啉的摩尔比为 大于1:1。 硫酸的浓度和用量可以更好地控制反应温度,从而提高了产品和纯度。 使用喹啉酸钾制备作为压敏记录材料领域中使用的一些显色材料的起始原料的喹啉酸。