Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid
    34.
    发明授权
    Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid 有权
    将丙烯非均相催化部分气相氧化成丙烯酸

    公开(公告)号:US07164039B2

    公开(公告)日:2007-01-16

    申请号:US10808282

    申请日:2004-03-25

    IPC分类号: C07C51/16

    CPC分类号: C07C51/252 C07C57/04

    摘要: In a process for heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid, the propene-containing starting reaction gas mixture is oxidized in a first reaction stage using a fixed catalyst bed 1 which consists of a plurality of fixed catalyst bed zones and is accommodated in two successive temperature zones A, B, and the acrolein-containing product gas mixture of the first reaction stage is then oxidized in a second reaction stage using a fixed catalyst bed 2 which consists of a plurality of fixed catalyst bed zones and is accommodated in two successive temperature zones C, D, and the transition from one temperature zone to another temperature zone within one reaction stage does not spatially coincide with a transition from one fixed catalyst bed zone to another fixed catalyst bed zone.

    摘要翻译: 在将丙烯非均相催化的部分气相氧化成丙烯酸的方法中,含丙烯的起始反应气体混合物在第一反应阶段中使用由多个固定催化剂床区组成的固定催化剂床1被氧化, 在两个连续的温度区A,B和第一反应阶段的含丙烯醛的产物气体混合物然后在第二反应阶段中使用由多个固定催化剂床区组成的固定催化剂床2进行氧化, 两个连续的温度区域C,D以及在一个反应​​阶段内从一个温度区域到另一个温度区域的过渡在空间上与从一个固定催化剂床区域到另一个固定催化剂床区域的过渡不一致。

    Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid
    36.
    发明授权
    Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid 有权
    将丙烯非均相催化部分气相氧化成丙烯酸

    公开(公告)号:US07019168B2

    公开(公告)日:2006-03-28

    申请号:US10465653

    申请日:2003-06-20

    IPC分类号: C07C51/16 C07C57/02

    CPC分类号: C07C51/252 C07C57/04

    摘要: In a process for partially oxidizing propene to acrylic acid in the gas phase under heterogeneous catalysis, a starting reaction gas mixture comprising propene and oxygen and having a specific composition is oxidized in a first reaction stage over a first fixed catalyst bed having a volume-specific activity which is constant or increases in the flow direction and the acrolein-containing product gas mixture of the first reaction stage is subsequently oxidized in a second reaction stage over a second fixed catalyst bed having a volume-specific activity increasing in the flow direction, and the shaped catalyst bodies of both fixed catalyst beds are annular and each have a specific multimetal oxide composition.

    摘要翻译: 在非均相催化下在气相中将丙烯部分氧化为丙烯酸的方法中,包含丙烯和氧并具有特定组成的起始反应气体混合物在第一反应阶段在具有体积特异性的第一固定催化剂床上被氧化 随后在第二反应阶段,在流动方向上具有体积比活度增加的第二固定催化剂床上氧化第一反应段的流动方向恒定或增加的含丙烯醛的产物气体混合物的活性,以及 两个固定催化剂床的成形催化剂体是环状的,并且各自具有特定的多金属氧化物组合物。

    PROCESS FOR PREPARING (METH)ACRYLIC ESTERS OF N,N-SUBSTITUTED AMINO ALCOHOLS
    38.
    发明申请
    PROCESS FOR PREPARING (METH)ACRYLIC ESTERS OF N,N-SUBSTITUTED AMINO ALCOHOLS 审中-公开
    制备N,N-取代氨基醇的(甲基)丙烯酸酯的方法

    公开(公告)号:US20120077977A1

    公开(公告)日:2012-03-29

    申请号:US13236893

    申请日:2011-09-20

    CPC分类号: C07D295/088

    摘要: The present invention relates to a process for preparing (meth)acrylic esters (F) of N,N-substituted amino alcohols, by transesterifying N,N-substituted amino alcohols (I) in which Y and Z are each independently C1-C20-alkyl, C3-C15-cycloalkyl, aryl, or Y and Z together with the nitrogen atom connecting them form a 5- to 9-membered saturated heterocyclic radical which optionally has oxygen, sulfur, nitrogen or C1-C4-alkyl-substituted nitrogen as a further heteroatom, and X is C2-C20-alkylene which may be interrupted by 1 to 10 nonadjacent oxy groups and/or unsubstituted or methoxy-substituted C1-C4-alkylimino groups, or a C3-C15-cycloalkylene, with at least one (meth)acrylic ester (D) in the presence of at least one heterogeneous catalyst (K), wherein the heterogeneous catalyst (K) is used without any further solvent and the content of polymerization inhibitors in the reaction mixture is

    摘要翻译: 本发明涉及一种制备N,N-取代氨基醇的(甲基)丙烯酸酯(F)的方法,其中N,N-取代的氨基醇(I),其中Y和Z各自独立地为C 1 -C 20 - 烷基,C 3 -C 15 - 环烷基,芳基或Y和Z与连接它们的氮原子一起形成5-至9-元饱和杂环基,其任选具有氧,硫,氮或C 1 -C 4 - 烷基取代的氮作为 另外的杂原子,X是可被1-10个不相邻的氧基和/或未被取代的或甲氧基取代的C 1 -C 4烷基亚氨基或C 3 -C 15 - 亚环烷基间隔的C 2 -C 20亚烷基,其中至少有一个 (甲基)丙烯酸酯(D)在至少一种非均相催化剂(K)的存在下使用,其中非均相催化剂(K)不使用任何其它溶剂而使用,反应混合物中的聚合抑制剂的含量<450ppm,和 涉及使用N,N-取代的氨基醇的(甲基)丙烯酸酯(F)。

    PROCESS FOR PREPARING (METH)ACRYLIC ESTERS OF ALCOHOLS COMPRISING POLYALKOXY GROUPS
    39.
    发明申请
    PROCESS FOR PREPARING (METH)ACRYLIC ESTERS OF ALCOHOLS COMPRISING POLYALKOXY GROUPS 审中-公开
    制备包含聚烷氧基团的醇的丙烯酸酯的方法

    公开(公告)号:US20100274042A1

    公开(公告)日:2010-10-28

    申请号:US12764349

    申请日:2010-04-21

    IPC分类号: C07C67/02

    摘要: A process for preparing (meth)acrylic esters (E) of alcohols (A) comprising polyalkoxy groups, in which alcohols (A) which comprise polyalkoxy groups and are of the formula (I) RO—[(CH2)mO]n—H   (I) in which m is an integer from 1 to 10, n is an integer from 1 to 100 and R is a straight-chain saturated or unsaturated alcohol having 1 to 30 carbon atoms, are transesterified with at least one (meth) acrylic ester (D) in the presence of at least one inorganic salt (S).

    摘要翻译: 一种制备包含聚烷氧基的(甲基)丙烯酸酯(E)的方法,其中包含聚烷氧基并且具有式(I)的醇(A)RO - [(CH 2)m O] n -H (I)其中m是1至10的整数,n是1至100的整数,R是具有1至30个碳原子的直链饱和或不饱和醇,与至少一种(甲基)丙烯酸酯 酯(D)在至少一种无机盐(S)的存在下反应。