Highly alkaline proteases
    1.
    发明授权
    Highly alkaline proteases 失效
    高碱性蛋白酶

    公开(公告)号:US5352603A

    公开(公告)日:1994-10-04

    申请号:US661378

    申请日:1991-02-28

    CPC分类号: C12N9/54

    摘要: Novel, optimized highly alkaline proteases which are suitable for use in detergent formulations are prepared by employing microorganisms transformed by mutated DNA sequences. The mutated sequences are obtained starting from DNA sequences which code for highly alkaline protease usually produced by Bacillus species by altering these DNA sequences in defined positions by directed mutagenesis (point mutation) in such a way that the codon in which the point mutation is located now codes for an amino acid which is more strongly basic than the original amino acid. The result is highly alkaline proteases in which original amino acids have been replaced by more strongly basic amino acids, preferably by the amino acids lysine or arginine. Synthetic oligonucleotides, DNA sequences, vectors and transformed microorganisms which are used for generating and obtaining the optimized highly alkaline protease are also described.

    摘要翻译: 通过使用通过突变的DNA序列转化的微生物来制备适用于洗涤剂制剂的新型优化的高碱性蛋白酶。 突变序列从编码通过芽孢杆菌属物种生产的高度碱性蛋白酶的DNA序列开始获得,通过定点诱变(点突变)以定点诱变(点突变)改变这些DNA序列,使得点突变位于的密码子现在 编码比原始氨基酸更强碱性的氨基酸。 结果是高碱性蛋白酶,其中原始氨基酸已被更强碱性氨基酸替代,优选由氨基酸赖氨酸或精氨酸代替。 还描述了用于产生和获得优化的高碱性蛋白酶的合成寡核苷酸,DNA序列,载体和转化微生物。

    Enzyme immobilzation on a macropermable agglomerate of microporous .alpha.-
a
    2.
    发明授权
    Enzyme immobilzation on a macropermable agglomerate of microporous .alpha.- a 失效
    微波(ALPHA) - 氧化铝氢氧化物颗粒的无机聚合物的酶解

    公开(公告)号:US5229284A

    公开(公告)日:1993-07-20

    申请号:US737983

    申请日:1991-07-30

    IPC分类号: C12N11/14 C12P19/24

    CPC分类号: C12N11/14 C12P19/24

    摘要: Enzymes are immboilized on an inorganic carrier which is a round, macropermeable agglomerate having a mulberry-type structure formed from spherical microporous .alpha.-aluminum oxide hydroxide particles. An organic polycondensate having free organic functional groups as enzyme binding sites penetrates the agglomerate. The .alpha.-aluminum oxide hydroxide particles of the agglomerate retain essentially their form prior to agglomeration. The polycondensate is prepared by reacting a polyimine with a dialdehyde or an epoxy compound. Preferably, the polyimine is polyethyleneimine, the dialdehyde is glutardialdehyde and the epoxy compound is an epoxy-functional silicon resin, an aliphatic diepoxide or an aliphatic triepoxide. The agglomerate is prepared by granulating the .alpha.-aluminum oxide hydroxide particles in the presence of the polyimine to form the agglomerate having the polyimine dispersed throughout and then reacting the polyimine with the dialdehyde or the epoxy compound. A preferred enzyme is glucose isomerase.

    摘要翻译: 酶在无机载体上进行无菌化,该无机载体是具有由球形微孔α-铝氧化物氢氧化物颗粒形成的桑树型结构的圆形,可渗透聚集体。 具有游离有机官能团作为酶结合位点的有机缩聚物渗透附聚物。 附聚物的α-二氧化铝氢氧化物颗粒在凝聚之前基本保持其形式。 缩聚物通过聚亚胺与二醛或环氧化合物反应来制备。 优选地,聚亚胺是聚乙烯亚胺,二醛是戊二醛,环氧化合物是环氧官能的硅树脂,脂族二环氧化物或脂族三环氧化物。 通过在聚亚胺的存在下对α-氧化铝氢氧化物颗粒进行造粒来制备附聚物,以形成聚亚胺分散在其中的聚集体,然后使聚亚胺与二醛或环氧化合物反应。 优选的酶是葡萄糖异构酶。

    Elastic suspension for a monolithic catalyst body in a exhaust gas
cleaning device
    7.
    发明授权
    Elastic suspension for a monolithic catalyst body in a exhaust gas cleaning device 失效
    用于废气清洁装置中的整体式催化剂体的弹性悬浮液

    公开(公告)号:US4432943A

    公开(公告)日:1984-02-21

    申请号:US578712

    申请日:1975-05-19

    摘要: A catalyzer for detoxifying exhaust gases from an internal combustion engine wherein a monolithic catalyst body is supported within a housing having a composite damping arrangement placed in the housing between the catalyst body and the housing walls and having a portion extending axially of the catalyst body for damping radial forces acting on the body, and end portions for damping axial forces acting on the catalyst body, means cooperating with the damping means for elastically suspending the catalyst body in the housing and protecting rings positioned between the elastic holder and the catalyst body to further protect the edges of the catalyst body against destructive forces thereon.

    摘要翻译: 一种用于对来自内燃机的废气进行解毒的催化剂,其中单体催化剂体被支撑在具有复合阻尼装置的壳体内,所述复合阻尼装置放置在壳体内的催化剂体和壳体壁之间,并且具有沿催化剂体轴向延伸的部分用于阻尼 作用在本体上的径向力和用于阻止作用在催化剂体上的轴向力的端部,与阻尼装置配合的装置,用于将催化剂体弹性悬挂在壳体中,并且保护环位于弹性保持架和催化剂体之间,以进一步保护 催化剂体的边缘抵抗其上的破坏力。

    Process for preparing a substantially crystalline sodium aluminosilicate
    8.
    发明授权
    Process for preparing a substantially crystalline sodium aluminosilicate 失效
    制备基本上结晶的硅铝酸钠的方法

    公开(公告)号:US4248847A

    公开(公告)日:1981-02-03

    申请号:US876050

    申请日:1978-02-08

    CPC分类号: C01B33/2823 Y10S423/24

    摘要: A process for preparing a synthetic substantially crystalline sodium aluminosilicate of the zeolite A type is disclosed. The process comprises rapidly and simultaneously introducing a sodium silicate and a sodium aluminate solution under thorough agitation at a constant by volume ratio which provides for a reaction mixture the content of which is equivalent to a molar ratio of x' Na.sub.2 O/ 1 Al.sub.2 O.sub.3 / y SiO.sub.2 /z' H.sub.2 O wherein x' is from about 6.5 to about 9.0, y is from about 1.7 to about 2.2 and z' is from about 180 to about 250, maintaining the reaction mixture at a temperature of from about 70.degree. to about 100.degree. C. under stirring for a sufficient period of time, usually 1-3 hours, in order to allow the initially amorphous reaction product to crystallize and recovering the substantially crystalline product from the resulting suspension. The essential feature of the process is a continuously maintained constant molar ratio Na.sub.2 O/ Al.sub.2 O/ SiO.sub.2 /H.sub.2 O throughout the reaction mixture during the entire course of the process. The resulting product exhibits a small particle size, an excellent wettability and a high calcium binding power, and is especially suited as a detergent additive.

    摘要翻译: 公开了一种制备沸石A型合成基本上结晶的硅铝酸钠的方法。 该方法包括快速并同时在体积比不变的充分搅拌下引入硅酸钠和铝酸钠溶液,其提供反应混合物,其含量相当于x'Na 2 O / 1 Al 2 O 3 / y SiO 2的摩尔比 / z'H 2 O,其中x'为约6.5至约9.0,y为约1.7至约2.2,z'为约180至约250,将反应混合物保持在约70℃至约100℃的温度 在搅拌下足够的时间,通常为1-3小时,以使最初的无定形反应产物从所得悬浮液中结晶并回收基本上结晶的产物。 该方法的基本特征是在整个过程中在整个反应混合物中持续恒定的摩尔比Na 2 O / Al 2 O / SiO 2 / H 2 O。 所得产品具有小的粒度,优异的润湿性和高的钙结合力,并且特别适合作为洗涤剂添加剂。

    Process for preparing bromine- and fluorine-containing halogenated
hydrocarbons
    9.
    发明授权
    Process for preparing bromine- and fluorine-containing halogenated hydrocarbons 失效
    制备含溴和氟的卤代烃的方法

    公开(公告)号:US4222967A

    公开(公告)日:1980-09-16

    申请号:US810565

    申请日:1977-06-27

    CPC分类号: C07C17/206 Y02P20/582

    摘要: A process for brominating fluorine- and chlorine-containing halogenated hydrocarbons of formula (I) ##STR1## wherein R.sub.1 represents hydrogen, fluorine, chlorine, bromine, lower alkyl, or at least partially fluorinated lower alkyl; R.sub.2 represents hydrogen, fluorine, chlorine, or bromine; and, R.sub.3 represents fluorine or perfluorinated lower alkyl, to form the corresponding compounds of formula (II) ##STR2## wherein R.sub.1, R.sub.2 and R.sub.3 are as defined above is disclosed. According to this process, compounds of formula (I) are reacted in gaseous form at relatively mild reaction conditions, e.g., reaction temperatures of between 100.degree.-500.degree. C. with hydrogen bromide in the presence of a catalyst comprising at least one component selected from the group consisting of(a) active carbon,(b) silica gel,(c) active alumina, and(d) a bromide of an element selected from the group consisting of Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Zn, Cd, Cu, Ag, Al, Tl(I), Pb, Cr, Mn, Fe, Co, Ni, rare earth metals and metals of the platinum group.

    摘要翻译: 用于溴化含有式(I)的含氟和氯的卤代烃的方法其中R 1表示氢,氟,氯,溴,低级烷基或至少部分氟化的低级烷基; R2代表氢,氟,氯或溴; 并且R 3表示氟或全氟化低级烷基,以形成相应的式(II)化合物。其中R 1,R 2和R 3如上定义。 根据该方法,式(I)化合物在相对温和的反应条件下以气态形式反应,例如在含有选自至少一种成分的催化剂存在下,在100-500℃之间的反应温度与溴化氢反应 由(a)活性炭,(b)硅胶,(c)活性氧化铝组成的组和(d)选自Li,Na,K,Rb,Cs,Mg, Ca,Sr,Ba,Zn,Cd,Cu,Ag,Al,Tl(I),Pb,Cr,Mn,Fe,Co,Ni,稀土金属和铂族金属。

    Elastic support for a ceramic monolithic catalyzer body
    10.
    发明授权
    Elastic support for a ceramic monolithic catalyzer body 失效
    陶瓷整体催化剂体的弹性支撑

    公开(公告)号:US3945803A

    公开(公告)日:1976-03-23

    申请号:US347559

    申请日:1973-04-03

    摘要: In an apparatus for cleaning exhaust gases comprising a rigid housing forming an outer wall of the exhaust conduit, a pocket formed at each end of the housing, a pair of accordion-shaped or corrugated wall and resilient compensating devices placed at each end into the pockets and each having gripping end portions, a catalyzer body of the monolithic type being placed between the gripping end portions for suspension axially within the housing with a gap in the housing.

    摘要翻译: 在用于清洁废气的装置中,包括形成排气导管的外壁的刚性壳体,形成在壳体每端的一个口袋,一对折叠式波纹壁和弹性补偿装置,每个端部放置在口袋内 并且每个具有夹持端部,整体式催化剂主体被放置在夹持端部之间,用于在壳体内轴向悬挂,并且在壳体中具有间隙。