Preparation of an insoluble biocatalyst
    1.
    发明授权
    Preparation of an insoluble biocatalyst 失效
    制备不溶性生物催化剂

    公开(公告)号:US4764467A

    公开(公告)日:1988-08-16

    申请号:US45759

    申请日:1987-04-28

    IPC分类号: C12N11/04 C12N11/08 C07K17/08

    摘要: An insoluble biocatalyst is prepared by forming a mixture consisting essentially of the biocatalyst, one or more water-soluble compounds having two or more acrylamide or meth-acrylamido groups and one or more water soluble amines possessing two or more hydrogen atoms bonded to an amine nitrogen, and forming a gel from the mixture. The water-soluble amine is selected from ammonia, lower diamines, lower polyamines, primary monoamines, polyethyleneimine and polyvinylamine. Beads containing the biocatalyst may be formed by suspending the mixture in a water-immiscible solvent to form droplets prior to gelling. The biocatalyst may be an enzyme, cells or cell fragments.

    摘要翻译: 通过形成基本上由生物催化剂,一种或多种具有两个或多个丙烯酰胺或甲基丙烯酰胺基的水溶性化合物和一种或多种具有两个或多个与胺氮键合的氢原子的水溶性胺组成的混合物来制备不溶性生物催化剂 ,并从混合物中形成凝胶。 水溶性胺选自氨,低级二胺,低级多胺,一级单胺,聚乙烯亚胺和聚乙烯胺。 含有生物催化剂的珠可以通过将混合物悬浮在与水不混溶的溶剂中以在凝胶化之前形成液滴而形成。 生物催化剂可以是酶,细胞或细胞碎片。

    Immobilization of enzymes with a water-soluble glycidyl ether
    6.
    发明授权
    Immobilization of enzymes with a water-soluble glycidyl ether 失效
    用水溶性缩水甘油醚固定酶

    公开(公告)号:US4767707A

    公开(公告)日:1988-08-30

    申请号:US889392

    申请日:1986-07-25

    IPC分类号: C12N11/08 C07K17/08 C12N11/04

    CPC分类号: C12N11/04

    摘要: Enzymes are immobilized by mixing the following components with one another in aqueous solution:(a) an enzyme or a dispersed microorganism,(b) a water-soluble glycidyl ether, prepared by subjecting from 1 to 30 equivalents of an epoxide of the formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, methyl or ethyl, to an addition reaction with 1 equivalent (based on OH groups) of a polyfunctional alcohol of 2 to 6 carbon atoms or of a mono- or disaccharide to produce an adduct, reacting the adduct with epichlorohydrin and, if required, then carrying out cyclization to give the epoxide, and(c) a water-soluble amine possessing two or more NH groups, if necessary in a partially neutralized form,and allowing the mixture thus obtained to gel.

    摘要翻译: 通过在水溶液中将以下组分彼此混合来固定酶:(a)酶或分散的微生物,(b)水溶性缩水甘油醚,其通过将1至30当量的式I的环氧化物 (I)其中R 1,R 2和R 3各自为氢,甲基或乙基,与1当量(基于OH基)的2至6个碳原子的多官能醇或单糖或二糖的加成反应 以产生加合物,使加合物与表氯醇反应,并且如果需要,然后进行环化以得到环氧化物,和(c)具有两个或更多个NH基团的水溶性胺,如果需要,以部分中和的形式,并允许 由此获得的混合物凝胶化。

    Particulate polymers as filter aids
    10.
    发明授权
    Particulate polymers as filter aids 失效
    颗粒聚合物作为助滤剂

    公开(公告)号:US06736981B2

    公开(公告)日:2004-05-18

    申请号:US10076515

    申请日:2002-02-19

    IPC分类号: C02F100

    摘要: The use is described of particulate, water-insoluble and scarcely swellable polymers of ethylenically unsaturated monomers, which polymers contain, copolymerized, at least 20% by weight, based on the total weight of the monomers, of at least one &agr;,&bgr;-monoethylenically unsaturated monocarboxylic acid having from 3 to 6 carbons as filter aid for filtering aqueous liquids. Subject-matter of the invention are also water-insoluble, scarcely swellable polymers (popcorn polymers) that contain, copolymerized, &agr;,&bgr;-monoethylenically unsaturated carboxylic acids and styrene or styrene derivatives, and also a process for their preparation.

    摘要翻译: 该用途描述了烯属不饱和单体的颗粒状,水不溶性和几乎不溶胀的聚合物,该聚合物含有基于单体总重量至少20重量%的至少20重量%的至少一种α,β-单烯属 具有3至6个碳原子的不饱和一元羧酸作为过滤水性液体的助滤剂。 本发明的主题也是含有共聚的α,β-单烯属不饱和羧酸和苯乙烯或苯乙烯衍生物的水不溶性,几乎不溶胀的聚合物(爆米花聚合物),以及它们的制备方法。