Preparation of 2-cyano-3,3-diarylacrylic esters
    7.
    发明授权
    Preparation of 2-cyano-3,3-diarylacrylic esters 失效
    制备2-氰基-3,3-二芳基丙烯酸酯

    公开(公告)号:US5917080A

    公开(公告)日:1999-06-29

    申请号:US952667

    申请日:1997-12-01

    CPC分类号: C07C253/30

    摘要: A process for preparing 2-cyano-3,3-diarylacrylic esters of the general formula I ##STR1## where R.sup.1 and R.sup.2 are hydrogen, C.sub.1 -C.sub.12 -alkyl groups, C.sub.- C.sub.12 -alkoxy groups or di(C.sub.1 -C.sub.4 -alkyl)amino groups and R.sup.3 is a C.sub.4 -C.sub.18 -alkyl group which can be interrupted by ether-functional oxygen atoms, by reacting a benzophenone imine of the general formula II ##STR2## with a cyanoacetic ester of the general formula III ##STR3## wherein the reaction is carried out at from 20 to 60.degree. C. and, during this, the liberated ammonia is continuously removed from the reaction mixture with the aid of a stream of gas or by reducing the pressure to from 900 to 100 mbar.

    摘要翻译: PCT No.PCT / EP96 / 02238 Sec。 371 1997年12月1日第 102(e)日期1997年12月1日PCT提交1996年5月24日PCT公布。 公开号WO96 / 38409 日期:1996年12月5日制备通式Ⅰ的2-氰基-3,3-二芳基丙烯酸酯的方法,其中R1和R2为氢,C1-C12-烷基,C-C12-烷氧基或二(C1-C4 - 烷基)氨基,R3是可以被醚官能的氧原子间隔的C4-C18-烷基,通过使通式II的二苯甲酮亚胺与通式III的氰基乙酸酯反应,其中反应进行 在20至60℃范围内,并且在此期间,借助于气流或通过将压力降低至900至100毫巴,将释放的氨从反应混合物中连续除去。

    Preparation of benzophenone imines
    8.
    发明授权
    Preparation of benzophenone imines 失效
    二苯甲酮亚胺的制备

    公开(公告)号:US5679855A

    公开(公告)日:1997-10-21

    申请号:US561300

    申请日:1995-11-21

    CPC分类号: C07C251/16 C07C249/02

    摘要: A process for preparing benzophenone imines of the general formula I ##STR1## where R.sup.1 to R.sup.6 are hydrogen, C.sub.1 -to C.sub.4 -alkoxy, C.sub.1 -to C.sub.2 -alkylamine or C.sub.2 -to C.sub.4 -dialkylamine, by reacting benzophenones of the general formula II ##STR2## where R.sup.1 to R.sup.6 have the abovementioned meanings, in liquid ammonia in the presence of oxides of the elements boron, aluminum, gallium, indium, silicon, germanium, tin, lead, phosphorus, arsenic, antimony, bismuth, scandium, yttrium, titanium, zirconium, vanadium, niobium, tantalum or mixtures thereof at from 50.degree. to 150.degree. C. and from 50 to 350 bar is described.

    摘要翻译: 制备通式I的二苯甲酮亚胺的方法,其中R 1至R 6为氢,C 1至C 4 - 烷氧基,C 1至C 2 - 烷基胺或C 2至C 4 - 二烷基胺,通过使 通式II其中R 1至R 6具有上述含义,在硼,铝,镓,铟,硅,锗,锡,铅,磷,砷,锑元素的氧化物存在下在液氨中 描述了50至150℃和50至350巴的铋,钪,钇,钛,锆,钒,铌,钽或其混合物。

    Mixtures containing monomers and stabilizers
    9.
    发明授权
    Mixtures containing monomers and stabilizers 有权
    含有单体和稳定剂的混合物

    公开(公告)号:US6143205A

    公开(公告)日:2000-11-07

    申请号:US117178

    申请日:1998-08-03

    CPC分类号: C07B63/04 C07C7/20

    摘要: Mixtures contain(A) vinyl-containing monomers, and(B) an effective amount of a mixture inhibiting the premature polymerization of the vinyl-containing monomers during the purification or distillation and containing(i) from 0.05 to 4.5% by weight, based on the total mixture (B), of at least one N-oxyl compound of a secondary amine which carries no hydrogen atoms on the .alpha.-carbon atoms and(ii)from 99.95 to 95.5% by weight, based on the total mixture (B), of at least one nitro compound,and a mixture (B) is used for inhibiting the premature polymerization of monomers.

    摘要翻译: PCT No.PCT / EP97 / 02758 Sec。 371日期1998年8月3日 102(e)日期1998年8月3日PCT提交1997年5月28日PCT公布。 第WO97 / 46504号公报 日期1997年12月11日混合物含有(A)含乙烯基单体,和(B)有效量的混合物,其在纯化或蒸馏期间抑制含乙烯基单体的过早聚合,并含有(i)0.05至4.5% 基于总混合物(B),至少一种在α-碳原子上不含氢原子的仲胺的至少一种N-氧基化合物,和(ii)基于所述α-烯烃的99.95至95.5重量% 使用至少一种硝基化合物的总混合物(B)和(B)混合物来抑制单体的过早聚合。