METHOD FOR CONTROLLING THE REACTOR ADMISSION TEMPERATURE DURING THE PRODUCTION OF METHYLAMINE
    2.
    发明申请
    METHOD FOR CONTROLLING THE REACTOR ADMISSION TEMPERATURE DURING THE PRODUCTION OF METHYLAMINE 审中-公开
    甲基丙烯酸生产中控制反应器温度的方法

    公开(公告)号:WO2005028416A2

    公开(公告)日:2005-03-31

    申请号:PCT/EP2004010765

    申请日:2004-09-24

    CPC classification number: C07C209/16 C07C211/04

    Abstract: The invention relates to a method for the production of metylamines by means of gas phase reaction from methanol and ammonia as educts in the presence of a heterogeneous catalyst at a pressure in the region of 15 - 30 bars. Said educts are vaporised in one or several heat exchangers (1, 2, 3) in order to overheat an educt gas flow and are subsequently guided to a reactor (4). The educts can be mixed in the inlets of one of the heat exchangers (1, 2, 3) or at one remaining position in a heat exchanger (1, 2, 3). A product gas flow containing monomethylamine, dimethylamine and trimethylamine, in addition to reaction auxiliary products, is removed from the reactor (4). In order to regulate the reactor admission temperature of the educts to a temperature in the region of 360 DEG C - 370 DEG C, the educt gas flow or the product gas flow is guided partially or completely through an adjustable valve (5) enabling the pressure and the condensation temperature to be varied.

    Abstract translation: 本发明涉及一种用于在15〜30巴范围内的制备Metylaminen的由甲醇和氨作为原料在非均相催化剂的存在下的气相反应在压力下进行。 起始材料在一个或多个热交换器(1,2,3)蒸发至过热的进料气流,然后提供一个反应器(4),其中所述进料在反应物的混合到热交换器中的一个(1,2,3),或 热交换器(1,2,3)中的任何位置都可以发生。 从反应器(4)中取出一甲胺,二甲胺和三甲胺以及含产物气流的反应副产物。 为了控制反应物的反应器入口温度的温度在360℃至370℃,进料气流或产品气流的压力的变化,从而冷凝温度通过可调节的阀(5)的一部分或全部通过。

    METHOD FOR PRODUCING IPDA WITH A HIGH CIS/TRANS ISOMER RATIO BY DISTILLATION

    公开(公告)号:AU2003258591A1

    公开(公告)日:2004-04-30

    申请号:AU2003258591

    申请日:2003-08-08

    Applicant: BASF AG

    Abstract: Recovery of isophoronediamine (IPDA) comprises preparation of IPDA having a cis/trans isomer ratio of less than 73/27 and separation into at least 5 fractions by distillation including an IPDA fraction having a cis/trans ratio of greater than 73/27 and a fraction having a cis/trans ratio of less than 66/34. A process for the recovery of 3-aminomethyl-3,5,5-trimethylcyclohexylamine (isophoronediamine, IPDA) comprises; (a) preparation of IPDA having a cis/trans isomer ratio of less than 73/27; (b) introduction of IPDA to the middle region of a distillation column having inserts and distillation of IPDA at 5-300 degreesC and 10-2000 mbar; (c) optionally further purification of the IPDA from (b) by distillation in at least one further column whereby the IPDA from step (b) and (c) are separated into at least 5 fractions comprising an organic fraction (1a) containing impurities having a lower b. pt. than trans-IPDA, an aqueous fraction (1b) containing impurities having a lower b. pt. than trans-IPDA, a fraction (2) containing impurities having a higher b. pt. than cis-IPDA, an IPDA fraction (3) having a cis/trans ratio of greater than 73/27 and an IPDA fraction (4) having a cis/trans ratio of less than 66/34.

    Inherently light- and heat-stabilized polyamide, method of making the same, and use thereof

    公开(公告)号:CZ292075B6

    公开(公告)日:2003-07-16

    申请号:CZ20002934

    申请日:1999-02-12

    Applicant: BASF AG

    Abstract: An inherently light- and heat-stabilized polyamide is prepared by polymerizing polyamide forming monomers in the presence of (a) an effective amount of at least one piperidine derivative of the general formula I: wherein Ri1 represents hydrogen, benzyl, or a alkyl containing 1 to 20 carbon atoms; Ri2 through Ri5 denote each hydrogen or the same or a different alkyl having 1 to 6 carbon atoms; X has n free valance bonding sites and represents an alkyl or substituted alkylene having from about 1 to about 30 carbon atoms or an arylene having from about 1 to about 20 carbon atoms w; m is 0 or 1; -C(O)-Ri6 represents a group that can form an amide bond together with an amine, and n is equal to 1, 2 or 3 and (b) an effective amount of at least one 4-amino-2,2,6,6-tetramethylpiperidine derivative of the general formula II: wherein Ri7 denotes hydrogen, benzyl, or a alkyl containing 1 to 20 carbon atoms. The inherently light- an heat-stabilized polyamide may be used to form articles such as, for example, fibers, carpets, yarns, and textile fabrics.

    Inherently light and heat stabilized polyamides of improved wefastness

    公开(公告)号:EG22326A

    公开(公告)日:2002-12-31

    申请号:EG28199

    申请日:1999-03-18

    Applicant: BASF AG

    Inventor: JULIUS MANFRED

    Abstract: A process for preparing polyamides comprises polymerizing starting monomers or starting oligomers in the presence of at least one compound of the formula (I)whereR is a functional group R which bears 1-4 identical or different amide-forming groups R ,R is H, C1-C20-alkyl, cycloalkyl, benzyl or OR , where R is H, C1-C20-alkyl, cycloalkyl or benzyl,R , R , R and R are independently C1-C10-alkyl,n is a natural number greater than 1, andthe piperidine derivatives attached to R are identical or different with regard to the substituents, meaning R , R , R , R and R .The polyamides are useful for preparing filaments, fibers, films, sheetlike structures and moldings.

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