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A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
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| Number | Title | Issue Date |
| 7291184 | Method of reducing the organic carbon content of production waste water in the course of the preparation of concentrated solutions of anionic organic compounds The present invention relates to a method of reducing the total organic carbon (TOC) content of waste water in the course of the preparation of concentrated solutions or suspensions of anionic organic compounds, which method comprises increasing the concentration of... | 11/06/2007 |
| 6096889 | Process for making high performance dyes An aromatic amino sulfonic acid compound is purified by a process including steps of: (a) dissolving the aromatic amino sulfonic acid compound in aqueous medium having a basic pH; (b) acidifying the aqueous medium with acetic acid to precipitate the aroma... | 08/01/2000 |
| 6096924 | Process for the catalytic hydrogeneration of aromatic nitro compounds One object of the invention is a process for the catalytic hydrogenation of aromatic nitro compounds in solution or in melt in the presence of hydrogen and at least one noble metal catalyst, nickel catalyst or cobalt catalyst, in which process a catalytic... | 08/01/2000 |
| 5808141 | Process for preparing 4,4'-dinitrostilbene-2,2'-disulphonic acid The new process for preparing 4,4'-dinitrostilbene-2,2'-disulphonic acid and salts thereof by oxidation of 4-nitrotoluene-2-sulphonic acid with an oxidant in the presence of strong bases is characterized in that the oxidation is carried out in a mixture o... | 09/15/1998 |
| 5583252 | Process for preparing 4,4'-dinitrostilbene-2,2'-disulphonic acid and its salts The preparation of 4,4'-dinitrostilbene-2,2'-disulphonic acid by oxidation of 4-nitrotoluene-2-sulphonic acid with oxygen in alkaline medium in aqueous ether alcohol makes possible a simplified work-up.... | 12/10/1996 |
| 5081240 | Process for the preparation of benzothiazepin-one derivatives The object of the invention is a process for the preparation of the trans(-) (2R,3S) diastereoisomer of the glycidic esters of general formula: ##STR1## wherein a chlorohydrin of general formula: ##STR2## is reacted with a strong organic ba... | 01/14/1992 |
| 5041632 | Process for the preparation of 4,4'-dinitrostilbene-2,2-disulfonic acid A process is described for the preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid by oxidation of 4-nitrotoluene-2-sulfonic acid by using liquid, anhydrous ammonia, a liquid alkyl derivative of ammonia or a mixture of ammonia and/or the alkyl d... | 08/20/1991 |
| 5021132 | Electrochemical process for preparing 4,4'-dinitrostilbene-2,2'-disulfonic acid and the salts thereof A process is disclosed for electrochemically treating p-nitrotoluene-2-sulfonic acid salts under oxidizing conditions to form 4,4'-dinitrostilbene-2,2'-disulfonic acid or the salts thereof. The process provides satisfactory yields of the stilbene compound... | 06/04/1991 |
| 4952725 | Process for the preparation of 4,4'dinitrostilbene-2,2'-disulfonic acid and its salts The present invention relates to an improved process for the preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid and its salts.... | 08/28/1990 |
| 4922008 | Process for the production of 4-nitrotoluene-2-sulfonic acid A process for the preparation of 4-nitrotoluene-2-sulfonic acid by sulfonating 4-nitrotoluene with oleum or liquid SO3 is described. The sulfonation is carried out continuously with oleum of at least 50% concentration or liquid 100% SO3 | 05/01/1990 |
| 4820452 | Bechamp reduction of DNS to DAS using H2 SO4 and trace of HOAc A process for preparing bis-diaminostilbene dilsulfonic acid from bis-dinitrostilbene disulfonic acid by an improved Bechamp reduction process is disclosed. The process involves reduction with metallic iron in an acidic medium consisting of 0.033 to 0.27%... | 04/11/1989 |
| 4719051 | Process for the preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid and its salts A process for the preparation of 4,4'-dinitrostilbene-2,2'-disulfonic acid and its salts, of the formula ##STR1## in which M is hydrogen or an alkali metal cation, by oxidation of 4-nitrotoluene-2-sulfonic acid in organic solvents, and also the reduc... | 01/12/1988 |
| 4707189 | Biostable compositions and the aqueous solutions thereof as thickeners for aqueous-based systems Disclosed is an essentially water-free biostable composition comprising at least one anionic water-soluble polymer containing carboxylate or sulfonate groups and small amounts of at least one cationic quaternary ammonium salt surfactant in a ratio, expres... | 11/17/1987 |
| 4680146 | Process for the preparation of 4,4'-dinitrostilbene-2,2'-disulphonic acid salts 4,4-40 -Dinitrostilbene-2,2'-disulphonic acid salts are prepared by the oxidation of 4-nitrotoluene-2-sulphonic acid or salts thereof in an aqueous alkaline medium, by adding potassium, calcium and/or magnesium ions during the reaction at the rate of whic... | 07/14/1987 |
| 4539161 | Amine oxide compounds Novel amine oxide compounds of the formula ##STR1## in which m is the integer 1 or 2, A is a through-conjugated radical of a fluorescent brightener system, which radical contains unsubstituted or non-chromophorically substituted aromatic carbocyclic ... | 09/03/1985 |
| 4348335 | Process for the partial reduction of polynitrated diaryl compounds Polynitrated diaryl compounds of the formula given in the description are reduced with 1-2 mols of sulphides, or compounds which donate sulphide ions, per mol of nitro group in the presence of 0.5-10 mols of ammonia per mol of starting compound at 30°-11... | 09/07/1982 |
| 4263206 | Reactive dyestuffs containing chlorine or fluorine substituents and one or more 1,3-dicyanobenzene radicals linked to the dyestuff at the 2-, 4- or 6-position Dyestuffs are provided which contain one or more 1,3-dicyanobenzene radicals linked to the dyestuff at the 2-, 4- or 6-position, with halogen substituents in both of the remaining two of these positions and an electron-attracting substituent in the 5-posi... | 04/21/1981 |
| 4217304 | Continuous reduction process A process for the reduction of aromatic nitro compounds to amino compounds in the liquid phase using iron as reducing agent, which comprises carrying out the reduction continuously such that the reducing iron, based on the amount of nitro compound present... | 08/12/1980 |
| 4179476 | Semi-continuous process for obtaining amino compounds A semi-continuous process for manufacturing aliphatic or aromatic amino compounds by reduction of the corresponding nitro compounds in an acid medium with iron which is etched with acids or salts is provided.... | 12/18/1979 |
| 4070395 | Process for the preparation of 4,4'-diaminostilbene-2,2'-disulfonic acid or its salts 4,4'-DIAMINOSTILBENE-2,2'-DISULFONIC ACID (HEREINAFTER ABBREVIATED AS DAS) or its alkali salt (abbreviated as DAS-salt) are prepared by catalytic hydrogenation of 4,4'-dinitrostilbene-2,2'-disulfonic acid (hereinafter abbreviated as DNS) or its alkali sal... | 01/24/1978 |
| 4051177 | Process for the preparation of unsaturated amino compounds Process for the preparation of aromatic amines which additionally still contain C-C multiple bonds, characterized in that aromatic nitro compounds which still contain C-C multiple bonds are hydrogenated in the presence of cobalt sulphides as catalysts, at... | 09/27/1977 |
| 4002673 | Process for the preparation of unsaturated amino compounds Process for the preparation of aromatic amines which additionally still contain C-C multiple bonds, characterized in that aromatic nitro compounds which still contain C-C multiple bonds are hydrogenated in the presence of metal sulphides of the formula Me... | 01/11/1977 |
| 3989743 | Process for the preparation of 4,4'-diaminostilbene-2,2'-disulphonic acid Process for the preparation of 4,4'-diaminostilbene-2,2'-disulphonic acid or its alkali salts by catalytic hydrogenation of 4,4'-dinitrostilbene-2,2'-disulphonic acid in an aqueous medium, characterized in that the hydrogenation is carried out on a cobalt... | 11/02/1976 |
| 3936497 | Process for preparation of 4,4'-diaminostilbene-2,2'-disulfonic acid or salts thereof Disodium 4,4'-diaminostilbene-2,2'-disulfonate is prepared by catalytically reducing disodium 4,4'-dinitrostilbene-2,2'-disulfonate with hydrogen in the presence of a nickel catalyst, either (1) in an alcohol medium in which a water content of the reactio... | 02/03/1976 |
