会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 57. 发明授权
    • Preparation of 4-nitrothioanisole
    • 4-硝基硫代苯甲醚的制备
    • US4298761A
    • 1981-11-03
    • US110588
    • 1980-01-09
    • Hermann HagemannErich KlaukeGerd-Michael Petruck
    • Hermann HagemannErich KlaukeGerd-Michael Petruck
    • C07C319/14C07C20060101C07C67/00C07C313/00C07C323/09C07C149/32
    • C07C323/00
    • A process for the preparation of 4-nitrothioanisole comprising successively in a single vessel and without intermediate isolation reacting 4-nitrochlorobenzene with Na.sub.2 S.sub.2, then with an alkaline Na.sub.2 S solution and with a methylating agent. Advantageously the reactions are effected in methanol or aqueous methanol, the reactions with Na.sub.2 S.sub.2 and Na.sub.2 S are carried out at a temperature between about 50.degree. to 70.degree. C., the Na.sub.2 S.sub.2 is formed in situ in about 20% excess from Na.sub.2 S and sulphur, the Na.sub.2 S solution is rendered alkaline with sodium methylate or sodium hydroxide, and methylation is effected with methyl chloride at about 27.degree. to 35.degree. C. The product is produced in such high yield and purity that it can be employed directly for chlorination, without extensive purification, to produce insecticide intermediates.
    • 一种制备4-硝基硫代苯甲醚的方法,其依次包括在单一容器中,不用中间分离使4-硝基氯苯与Na 2 S 2反应,然后与碱性Na 2 S溶液和甲基化试剂反应。 有利地,反应在甲醇或甲醇水溶液中进行,与Na 2 S 2和Na 2 S的反应在约50℃至70℃之间的温度下进行,Na 2 S 2原位形成于Na 2 S和硫中约20%过量, 用甲醇钠或氢氧化钠将Na 2 S溶液呈碱性,用甲基氯在约27-35℃进行甲基化。产物以高产率和纯度生产,可直接用于氯化,无需大量纯化 ,生产杀虫剂中间体。
    • 58. 发明授权
    • Dry copying material
    • 干复印材料
    • US3951660A
    • 1976-04-20
    • US533672
    • 1974-12-17
    • Hermann HagemannAnita VON Konig
    • Hermann HagemannAnita VON Konig
    • G03C1/498G03C1/02C07D265/00
    • G03C1/49845Y10S430/165Y10S430/166
    • A material for use in a process of producing optical copies of graphic originals, which optical recording material is in a layer and contains a nonlight sensitive silver salt, such as silver behenate, and a toner compound in a binder. The layer is suitably supported. The toner compound is of the following formula: ##SPC1##In whichX represents O or NR.sup.5 ;R.sup.1, r.sup.2, r.sup.3 or R.sup.4 represent (1) hydrogen, (2) alkyl, preferably with up to 20 and more, preferably with up to 4 carbon atoms, (3) cycloalkyl, especially cyclopentyl or cyclohexyl, (4) alkoxy, preferably with up to 2 carbon atoms, (5) alkylthio with preferably up to 2 carbon atoms, (6) hydroxy, (7) dialkylamino, the alkyl radicals also containing preferably up to 2 carbon atmos or (8) halogen, preferably chlorine or bromine; in addition to which R.sup.1 and R.sup.2 or R.sup.2 and R.sup.3 or R.sup.3 and R.sup.4 may represent the ring members required to complete a fused aromatic ring, preferably a benzene ring; represents alkyl with preferably up to 20 and more, preferably with up to 2 carbon atoms.
    • 一种用于生产图形原件的光学复制品的方法的材料,该光学记录材料是层并且含有非光敏感的银盐,例如山嵛酸银,以及粘合剂中的调色剂化合物。 该层被适当地支撑。 调色剂化合物具有下式:其中X表示O或NR5; R 1,R 2,R 3或R 4表示(1)氢,(2)烷基,优选至多20个以上,优选至多4个碳原子,(3)环烷基,特别是环戊基或环己基,(4) 具有至多2个碳原子,(5)优选至多2个碳原子的烷硫基,(6)羟基,(7)二烷基氨基,烷基还优选含有至多2个碳原子或(8)卤素,优选氯或溴 ; 此外R1和R2或R2和R3或R3和R4可以表示完成稠合芳环,优选苯环所需的环成员; 表示优选至多20个并且更优选至多2个碳原子的烷基。