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    • 2. 发明授权
    • Fast-writable and precision-writable high-capacity optical storage media
    • 快速写入和精确写入的大容量光存储介质
    • US06849315B2
    • 2005-02-01
    • US10483130
    • 2002-07-04
    • Urs LehmannPeter AeschlimannPeter SutterBeat SchmidhalterJean-Luc BudryHeinz Spahni
    • Urs LehmannPeter AeschlimannPeter SutterBeat SchmidhalterJean-Luc BudryHeinz Spahni
    • B41M5/26C09B11/00C09B11/02C09B11/20C09B11/28C09B45/14C09B45/20C09B55/00C09B69/02G11B7/004G11B7/24G11B7/244G11B7/246G11B7/2467G11B7/249G11B7/253G11B7/254G11B7/2542G11B7/258G11B7/259G11B7/26B32B3/02
    • G11B7/244C09B11/28G11B7/2467G11B7/249G11B7/253G11B7/2542G11B7/259Y10T428/21
    • The invention relates to an optical recording medium, comprising a substrate and a recording layer, wherein the recording layer comprises a compound of formula (I), wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12 and R13 are each independently of the others hydrogen, G1 or C1-C24alkyl, C2-C24alkenyl, C2-C24alkynyl, C3-C24cycloalkyl, C3-C24cycloalkenyl, C7-C24aralkyl, C6-C24aryl, C4-C12heteroaryl or C1-C12heterocycloalkyl, each unsubstituted or substituted by one or more identical or different substituents G1, wherein R1 and R2, R1 and R13, R2 and R3, R3 and R4, R4 and R5, R5 and R6, R6 and R7, R7 and R8, R8 and R9, R9 and R10, R10 and R11, R11 and R12 and/or R12 and R13 can independently of one another be bonded to one another in pairs separately or, when they contain substitutable sites, via a direct bond or via a —CH2—, —O—, —S—, —NH— or —NC1-C24alkyl-bridge in such a manner that, together with the atoms and bonds indicated in formula (I), five- or six-membered, saturated, unsaturated or aromatic, unsubstituted or G1-substituted rings are formed, G1 is any desired substituent,? xm- is an inorganic, organic organometallic anion, Yn+ is a proton or a metal, ammonium or phosphonium cation, and m and n are each independently of the other a number from 1 to 5, and p and q are each independently of the other O or a number from 0.2 to 6, the ratio of p and q to one another, depending upon m and n and, as applicable, the number of charged G1, being such that in formula (I) there is no excess positive or negative charge. Generally the optical recording medium according to the invention additionally comprises a reflecting layer. The recording media according to the invention exhibit high sensitivity and good playback characteristics, especially at high recording and playback speeds. The light stability is also excellent.
    • 本发明涉及一种光记录介质,包括基片和记录层,其中记录层包括式(I)化合物,其中R1,R2,R3,R4,R5,R6,R7,R8,R9,R10 ,R11,R12和R13各自独立地为氢,G1或C1-C24烷基,C2-C24链烯基,C2-C24炔基,C3-C24环烷基,C3-C24环烯基,C7-C24芳烷基,C6-C24芳基,C4-C12杂芳基或C1- C 1 -C 6杂环烷基,每个未取代或被一个或多个相同或不同的取代基G1取代,其中R1和R2,R1和R13,R2和R3,R3和R4,R4和R5,R5和R6,R6和R7,R7和R8,R8 并且R 9,R 9和R 10,R 10和R 11,R 11和R 12和/或R 12和R 13可以彼此独立地彼此相互键合,或者当它们含有可取代的位置时,经由直接键或通过-CH 2 - ,-O - , - S - , - NH-或-NCl-C24烷基 - 桥,其与式(I)中所示的原子和键一起为五或六元饱和, 形成不饱和或芳族,未取代或者G1取代的环,G1是a
    • 8. 发明授权
    • Process for producing 2,3,5-trichloropyridine
    • 制备2,3,5-三氯吡啶的方法
    • US4258194A
    • 1981-03-24
    • US74216
    • 1979-09-10
    • Claus D. WeisPeter Sutter
    • Claus D. WeisPeter Sutter
    • C07D213/61C07F9/40C07D213/02
    • C07D213/61C07F9/4075
    • A novel process for producing 2,3,5-trichloropyridine is described. In this process, 2,3,4,5-tetrachloropyridine is reacted, in an alkanephosphonic acid dialkyl ester (dialkyl alkane phosphonate) having 1 to 4 carbon atoms in each of the alkyl groups or in a phosphoric acid trialkyl ester (trialkyl phosphate) having 1 to 4 carbon atoms in each of the alkyl groups as the solvent, at 60.degree. to 120.degree. C., in the presence of 1.4 to 2.8 mols, per mol of 2,3,4,5-tetrachloropyridine, of an ammonium salt of an inorganic or organic acid, with 1.2 to 1.6 gram atoms of zinc per mol of 2,3,4,5-tetrachloropyridine, the 2,3,4,5-tetrachloropyridine being selectively dechlorinated in the 4-position.2,3,5-Trichloropyridine is a valuable intermediate for producing herbicidally effective .alpha.-[4-(3',5'-dichloropyrid-2-yloxy)-phenoxy-]-alkanecarboxylic acids and derivatives thereof.There are also described novel ammonium salts of methanephosphonic acid monomethyl ester, in the presence of which salts the selective dechlorination of 2,3,4,5-tetrachloropyridine in the 4-position is advantageously performed.
    • 描述了一种制备2,3,5-三氯吡啶的新方法。 在该方法中,2,3,4,5-四氯吡啶在各烷基中的烷基膦酸二烷基酯(具有1至4个碳原子的二烷基烷烃膦酸酯)或磷酸三烷基酯(磷酸三烷基酯)中反应, 在每个烷基中作为溶剂具有1至4个碳原子,在60至120℃下,在1.4至2.8摩尔存在下,每摩尔2,3,4,5-四氯吡啶,铵 无机或有机酸的盐,每摩尔2,3,4,5-四氯吡啶为1.2-1.6克原子锌,2,3,4,5-四氯吡啶在4位选择性脱氯。 2,3,5-三氯吡啶是产生除草有效的α-[4-(3',5'-二氯吡啶-2-基氧基) - 苯氧基] - 烷羧酸及其衍生物的有价值的中间体。 还描述了甲基膦酸单甲酯的新型铵盐,在其存在下,有利地进行4位的2,3,4,5-四氯吡啶的选择性脱氯。