Process for the production of ethylenically unsaturated carboxylic acids or esters and a catalyst therefor
    54.
    发明授权
    Process for the production of ethylenically unsaturated carboxylic acids or esters and a catalyst therefor 有权
    用于制备烯属不饱和羧酸或酯的方法及其催化剂

    公开(公告)号:US09346739B2

    公开(公告)日:2016-05-24

    申请号:US13883863

    申请日:2011-11-04

    摘要: A method of producing an ethylenically unsaturated carboxylic acid or ester such as (meth) acrylic acid or alkyl esters thereof, for example, methyl methacrylate is described. The process comprises the steps of contacting formaldehyde or a suitable source thereof with a carboxylic acid or ester, for example, propionic acid or alkyl esters thereof in the presence of a catalyst and optionally an alcohol. The catalyst comprises group II metal phosphate crystals having rod or needle like morphology or a suitable source thereof. The phosphate may be a hydroxyapatite, pyrophosphate, hydroxyphosphate, PO42− phosphate or mixtures thereof. The group II metal may be selected from Ca, Sr, Ba or mixtures thereof, for example, strontium hydroxyapatite and calcium hydroxyapatite. A catalyst system comprising a crystalline metal phosphate catalyst and a catalyst support is also described. The metal phosphate has rod/needle like morphology.

    摘要翻译: 描述了制备烯键式不饱和羧酸或酯如(甲基)丙烯酸或其烷基酯的方法,例如甲基丙烯酸甲酯。 该方法包括使甲醛或其合适的来源与羧酸或酯,例如丙酸或其烷基酯在催化剂和任选的醇的存在下接触的步骤。 催化剂包括具有棒状或针状形态的II族金属磷酸盐晶体或其合适的来源。 磷酸盐可以是羟基磷灰石,焦磷酸盐,羟基磷酸盐,PO42-磷酸盐或其混合物。 II族金属可以选自Ca,Sr,Ba或其混合物,例如羟基磷灰石锶和羟基磷灰石钙。 还描述了包含结晶金属磷酸盐催化剂和催化剂载体的催化剂体系。 金属磷酸盐具有棒/针状形态。

    PROCESS FOR THE PRODUCTION OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS OR ESTERS AND A CATALYST THEREFOR
    55.
    发明申请
    PROCESS FOR THE PRODUCTION OF ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS OR ESTERS AND A CATALYST THEREFOR 有权
    生产乙烯不饱和羧酸或酯及其催化剂的方法

    公开(公告)号:US20150307437A1

    公开(公告)日:2015-10-29

    申请号:US13883863

    申请日:2011-11-04

    摘要: A method of producing an ethylenically unsaturated carboxylic acid or ester such as (meth) acrylic acid or alkyl esters thereof, for example, methyl methacrylate is described. The process comprises the steps of contacting formaldehyde or a suitable source thereof with a carboxylic acid or ester, for example, propionic acid or alkyl esters thereof in the presence of a catalyst and optionally an alcohol. The catalyst comprises group II metal phosphate crystals having rod or needle like morphology or a suitable source thereof. The phosphate may be a hydroxyapatite, pyrophosphate, hydroxyphosphate, PO42− phosphate or mixtures thereof. The group II metal may be selected from Ca, Sr, Ba or mixtures thereof, for example, strontium hydroxyapatite and calcium hydroxyapatite. A catalyst system comprising a crystalline metal phosphate catalyst and a catalyst support is also described. The metal phosphate has rod/needle like morphology.

    摘要翻译: 描述了制备烯键式不饱和羧酸或酯如(甲基)丙烯酸或其烷基酯的方法,例如甲基丙烯酸甲酯。 该方法包括使甲醛或其合适的来源与羧酸或酯,例如丙酸或其烷基酯在催化剂和任选的醇的存在下接触的步骤。 催化剂包括具有棒状或针状形态的II族金属磷酸盐晶体或其合适的来源。 磷酸盐可以是羟基磷灰石,焦磷酸盐,羟基磷酸盐,PO42-磷酸盐或其混合物。 II族金属可以选自Ca,Sr,Ba或其混合物,例如羟基磷灰石锶和羟基磷灰石钙。 还描述了包含结晶金属磷酸盐催化剂和催化剂载体的催化剂体系。 金属磷酸盐具有棒/针状形态。

    Catalyst system
    57.
    发明授权
    Catalyst system 有权
    催化剂体系

    公开(公告)号:US09040445B2

    公开(公告)日:2015-05-26

    申请号:US10589971

    申请日:2005-02-17

    摘要: The present invention provides a catalyst system capable of catalyzing the carbonylation of an ethylenically unsaturated compound, which system is obtainable by combining: a) a metal of Group VIB or Group VIIIB or a compound thereof, b) a bidentate phosphine, arsine or stibine ligand, and c) an acid, wherein said ligand is present in at least a 2:1 molar excess compared to said metal or said metal in said metal compound, and that said acid is present in at least a 2:1 molar excess compared to said ligand, a process for the carbonylation of an ethylenically unsaturated compound, a reaction medium, and use of the system.

    摘要翻译: 本发明提供能够催化烯键式不饱和化合物羰基化的催化剂体系,该体系可通过以下方式获得:a)VIB族或VIIIB族金属或其化合物,b)二齿膦,胂或锑配体 ,和c)酸,其中所述配体与所述金属化合物中的所述金属或所述金属相比以至少2:1摩尔过量存在,并且所述酸以至少2:1的摩尔过量存在,相比于 所述配体,烯属不饱和化合物的羰基化方法,反应介质以及该体系的用途。

    Catalyst system
    58.
    发明授权
    Catalyst system 有权
    催化剂体系

    公开(公告)号:US08604236B2

    公开(公告)日:2013-12-10

    申请号:US11990272

    申请日:2006-08-04

    IPC分类号: C07C67/38

    摘要: A continuous carbonylation process for high turnover carbonylation, and a carbonylation reaction medium and product stream thereof. The process comprises carbonylating an ethlenically unsaturated compound with carbon monoxide in the presence of a source of hydroxyl groups and a catalyst system. The catalyst system comprising: (a) a bidentate phosphine, arsine or stibine ligand; and (b) a catalytic metal selected from a group VIB or group VIIIB metal or a compound thereof. The catalytically active concentration of said catalytic metal, measured as the ACCF (product Kg·hr−1·Dm−3), is maintained at less than 0.5.

    摘要翻译: 用于高周转羰基化的连续羰基化方法,以及羰基化反应介质及其产物流。 该方法包括在羟基源和催化剂体系存在的情况下将一种不饱和化合物与一氧化碳进行羰基化。 催化剂体系包括:(a)二齿膦,胂或锑配体; 和(b)选自VIB族或VIIIB族金属的催化剂金属或其化合物。 以ACCF(产品Kg·hr-1·Dm-3)测量的所述催化金属的催化活性浓度保持在小于0.5。

    PROCESS FOR THE PRODUCTION OF METHACRYLIC ACID AND ITS DERIVATIVES AND POLYMERS PRODUCED THEREFROM
    59.
    发明申请
    PROCESS FOR THE PRODUCTION OF METHACRYLIC ACID AND ITS DERIVATIVES AND POLYMERS PRODUCED THEREFROM 有权
    生产甲基丙烯酸及其衍生物的方法及其生产的聚合物

    公开(公告)号:US20130303713A1

    公开(公告)日:2013-11-14

    申请号:US13989363

    申请日:2011-11-18

    摘要: A process for the production of methacrylic acid is described. The process comprises the base catalysed decarboxylation of at least one or a mixture of dicarboxylic acids selected from itaconic, citraconic or mesaconic acid. The decarboxylation is carried out in the range greater than 240 and up to 275° C. to provide high selectivity. The methacrylic acid product may be esterified to produce an ester. A method of preparing polymers or copolymers of methacrylic acid or methacrylic acid esters using the process is also described. Optionally, the process may be preceded with a decarboxylation and, if necessary, a dehydration step on a source of pre-acid such as citric acid or isocitric acid.

    摘要翻译: 描述了生产甲基丙烯酸的方法。 该方法包括至少一种选自衣康酸,柠康酸或中康酸的二羧酸的混合物的碱催化脱羧。 脱羧在大于240和高达275℃的范围内进行,以提供高选择性。 可以将甲基丙烯酸产物酯化以产生酯。 还描述了使用该方法制备甲基丙烯酸或甲基丙烯酸酯的聚合物或共聚物的方法。 任选地,该方法之前可以进行脱羧,如果需要,在前体酸源例如柠檬酸或异柠檬酸上进行脱水步骤。

    MIXING APPARATUS
    60.
    发明申请
    MIXING APPARATUS 有权
    混合装置

    公开(公告)号:US20130150618A1

    公开(公告)日:2013-06-13

    申请号:US13763393

    申请日:2013-02-08

    IPC分类号: B01F3/04

    摘要: A mixing apparatus 100 for mixing at least two fluids, the mixing apparatus 100 comprising a shaft 120 rotatable about its longitudinal axis 121, a first 122 and a second 124 radially extending impeller mounted on the shaft 120 and respectively axially spaced apart, characterised in that the first impeller 122 comprises a plurality of curved blades 125 operable to move said fluids in an axial direction towards the second impeller 124, and the second impeller 124 comprises a plurality of curved blades 125 operable to move said fluids in an axial direction towards the first impeller 122.

    摘要翻译: 用于混合至少两种流体的混合装置100,混合装置100包括可绕其纵向轴线121旋转的轴120,安装在轴120上且分别轴向间隔开的第一122和第二124径向延伸的叶轮,其特征在于 第一叶轮122包括多个弯曲叶片125,其可操作以使所述流体沿轴向朝向第二叶轮124移动,并且第二叶轮124包括多个弯曲叶片125,其可操作以使所述流体沿轴向朝向第一叶轮124移动。 叶轮122。