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    • 1. 发明专利
    • Manufacture of highly viscous acetylcellulose soluble in acetone
    • GB325209A
    • 1930-02-11
    • GB2929228
    • 1928-10-11
    • WACKER CHEMIE GMBHWOLFGANG GRUBER
    • C08B3/06
    • 325,209. Wacker Ges. f³r Elektrochemische Industrie Ges., Dr. A., and Gruber, W. Oct. 11, 1928. Right to Patent relinquished. Cellulose acetates.-Highly viscous acetates soluble in acetone are prepared by treating cellulose acetates, which are insoluble in acetone. with an acid salt, containing water of crystallization, of a heavy metal of the first or second group of the periodic system either alone or if desired admixed with another acid salt or with a neutral salt at a temperature below 30‹ C. The acid salt containing water of crystallization may be added as such or may be formed in the mixture which is to be subjected to the treatment. In examples, cellulose tri-acetate is dissolved in glacial acetic acid, ZnCl2, HCl, 2H2O is added and the solution allowed to stand at 20‹ C. until the product is completely soluble in acetone: cellulose acetate is formed by means of acetic anhydride and zinc chloride, the residual anhydride is decomposed and then a quantity of water and hydrochloric acid is added such that ZnCl2, HCl, 2H2O is formed in the reaction mixture, which is them treated as in the first example: cellulose acetate is prepared by means of acetic anhydride and sulphuric acid, the residual anhydride is decomposed by addition of equivalent quantity of water, the sulphuric acid is neutralized, for example by means of sodium carbonate and the product mixed with ZnCl2.HCl,2H2O and CaCl,6H2O and further treated as in the first example; cellulose triacetate dissolved in glacial acetic acid is mixed with 3HgCl2, 4HCl, 14H2O at 20-30‹ C. and the mixture further treated as in the first example. The cellulose tri-acetates treated may be made by any known process, for example as described in Specifications 21628/01 and 291,001.
    • 7. 发明授权
    • Preparation of homopolymers and copolymers of .alpha.-monoolefins using
a Ziegler-Natta catalyst system
    • 使用齐格勒 - 纳塔催化剂体系制备α-单烯烃的均聚物和共聚物
    • US4579919A
    • 1986-04-01
    • US673337
    • 1984-11-20
    • Gerhard StaigerWolfgang Gruber
    • Gerhard StaigerWolfgang Gruber
    • C08F4/10C08F4/16C08F10/00C08F4/02
    • C08F10/00
    • .alpha.-Monoolefins are polymerized using a catalyst system which comprises (1) a titanium component obtained by first (1.a) preparing an intermediate from (1.a.1) titanium tetrachloride, (1.a.2) a modifier and (1.a.3) a magnesium alcoholate, and the (1.b) preparing the titanium component from (1.b.1) titanium tetrachloride, (1.b.2) the intermediate from (1.a) and, if required, (1.b.3) a further modifier, (2) an alkylaluminum and (3) a cocatalyst. In this process, (i) the titanium component (1) used is obtained by first (1.1) preparing a first intermediate from (1.1.1) titanium tetrachloride, (1.1.2) a modifier obtained from (1.1.2.1) a titanate and (1.1.2.2) a phthaloyl dichloride, and (1.1.3) a magnesium alcoholate, then (1.2) preparing a second intermediate from (1.2.1) titanium tetrachloride, (1.2.2) the intermediate from (1.1) and, if required, (1.2.3) a phthaloyl dichloride as a further modifier, and finally (1.3) preparing the titanium component from (1.3.1) titanium tetrachloride and (1.3.2) the intermediate from (1.2), and (ii) the cocatalyst (3) used is a trialkoxysilane.
    • α-烯烃使用催化剂体系进行聚合,所述催化剂体系包括(1)通过首先(1.a)从(1.a)四氯化钛制备中间体,(1.a.2)改性剂和( 1.a.3)一种醇镁,和(1.b)从(1.b.1)四氯化钛制备钛组分,(1.b.2)中间体为(1.a),如果 (1.b.3)另一种改性剂,(2)烷基铝和(3)助催化剂。 在该方法中,(i)使用的钛组分(1)首先(1.1)由(1.1.1)四氯化钛制备第一中间体,(1.1.2)由(1.1.2.1)得到的改性剂钛酸酯 和(1.1.2.2)邻苯二甲酰二氯化物,和(1.1.3)醇镁酸盐,然后(1.2)从(1.1.1)四氯化钛(1.2.1)制备第二中间体,(1.2.2)(1.1)中间体, (1.2.3)邻苯二甲酰二氯作为其他改性剂,最后(1.3)从(1.3.1)四氯化钛制备钛组分和(1.3.2)中间体(1.2)和(ii) 所用的助催化剂(3)是三烷氧基硅烷。
    • 9. 发明授权
    • NADH Peroxidase for hydrogen peroxide determination
    • NADH过氧化物酶测定过氧化氢
    • US4186052A
    • 1980-01-29
    • US811422
    • 1977-06-29
    • Albert RoderHans MolleringWolfgang GruberKlaus BeaucampHans SeidelPeter StahlDetlef von Hoerschelmann
    • Albert RoderHans MolleringWolfgang GruberKlaus BeaucampHans SeidelPeter StahlDetlef von Hoerschelmann
    • C12N9/08C12Q1/28G01N33/50C07G7/02C12D13/10G01N31/14
    • C12N9/0065C12Q1/28
    • A novel peroxidase for reduced nicotinamide-adenine-dinucleotide is provided which peroxidase oxidizes reduced nicotinamide-adenine-dinucleotide with hydrogen peroxide to give nicotinamide-adenine-dinucleotide and water and is characterized by a Michaelis constant K.sub.Mto hydrogen peroxide of 2.8.times.10.sup.-5 M andto reduced nicotinamide-adenine-dinucleotide of 1.7.times.10.sup.-5 M,measured at 25.degree. C. in 0.2M tris buffer of pH 6.0, containing 0.1M potassium acetate. The peroxidase can be prepared by liberating the enzyme from Streptococcus faecalis ATCC 8043 by digestion or by treatment with a surface-active agent and isolating same from the enzyme solution obtained. Hydrogen peroxide is determined in a simple reaction or in a coupled reaction with a specific oxidase by contacting the said peroxidase with the H.sub.2 O.sub.2 producing reaction mixture at a pH of from 6.0 to 9.0 and measuring the change of extinction as a measure of H.sub.2 O.sub.2 and of the concentration of nicotinamide-adenine-dinucleotide initially present in said reaction mixture.
    • 提供了一种用于还原型烟酰胺 - 腺嘌呤二核苷酸的新型过氧化物酶,其过氧化物酶用过氧化氢氧化还原型烟酰胺 - 腺嘌呤二核苷酸,得到烟酰胺 - 腺嘌呤二核苷酸和水,其特征在于具有2.8x10-5M的过氧化氢的米氏常数KM, 降低了1.7×10-5M的烟酰胺 - 腺嘌呤二核苷酸,在25℃下,在含有0.1M醋酸钾的0.2M Tris缓冲液pH6.0中测定。 过氧化物酶可以通过消化或通过用表面活性剂处理从粪链球菌ATCC 8043中释放酶制备,并从获得的酶溶液中分离。 过氧化氢在简单的反应或与特定氧化酶的偶联反应中通过使所述过氧化物酶与产生H 2 O 2的反应混合物在6.0至9.0的pH下接触并测定作为H 2 O 2和 最初存在于所述反应混合物中的烟酰胺 - 腺嘌呤二核苷酸的浓度。