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| Number | Title | Issue Date |
| 6818587 | Double-metal cyanide catalysts for preparing polyether polyols The invention relates to double-metal cyanide (DMC) catalysts for preparing polyether polyols by the polyaddition of alkylene oxides on to starter compounds containing active hydrogen atoms, wherein the DMC catalysts are composed of: a) at least one DMC compound; b)... | 11/16/2004 |
| 6803356 | Antimicrobial polymeric compositions A method for the preparation of polymers derived from acrolein and including poly(2-propenal, 2-propenoic acid), characterised in that the polymers are exposed to the presence of water, whereby such polymers exhibit increased antimicrobial activity. The polymers may... | 10/12/2004 |
| 6624330 | Method for stabilizing phenylacetaldehyde The present invention relates to a method for stabilizing phenylacetaldehyde by adding at least one additive, in which case the additive contains one or more polybasic carboxylic acids.... | 09/23/2003 |
| 6150563 | Aliphatic alkanals with improved storage stability and method of improving the storage stability Aliphatic alkanals with a water content of greater than 300 ppm which are stable in storage, and a method of improving the storage stability of these aliphatic alkanals, especially of substituted, sulfur-containing alkanals. The formation of oligomers, po... | 11/21/2000 |
| 6137013 | Method of stabilizing aldehydes A method of stabilizing aliphatic C3 -C14 -aldehydes against polymerization and autocondensation by the addition of alkaline substances to the aldehydes wherein the alkaline substances used are alkali metal hydroxides, alkaline earth... | 10/24/2000 |
| 5917094 | Acrolein-releasing emulsion homopolymers Acrolein-releasing emulsion homopolymers release acrolein in aqueous systems. They are produced by adding acrolein, at least 95% by weight pure, to a solution of an alkali hydroxide, with the temperature not exceeding 25° C. during the addition, and then... | 06/29/1999 |
| 5912389 | Stabilizer and stabilizing method for aqueous aliphatic aldehyde solution A stabilizer for an aqueous aliphatic aldehyde solution comprising acetic acid, a halogenated acetic acid or a compound capable of releasing acetic acid or a halogenated acetic acid in water.... | 06/15/1999 |
| 5874631 | Method and composition to increase the life of Liquid hydroxy-and alkoxyalkyl ketones A method for increasing the shelf life of liquid hydroxy- and alkoxyalkyl ketones by adding from 0.0001 to 1% by weight of a base is described.... | 02/23/1999 |
| 5723498 | Composition capable of releasing acrolein and its use A composition which is capable of releasing acrolein and is easy to handle contains (i) an acetal of acrolein with a C1-6 alcohol with 1 to 4 hydroxyl groups and (ii) an acid soluble therein and chemically compatible with a pKs value... | 03/03/1998 |
| 5364969 | Method for the stabilization of a sex pheromone compound A novel and very effective method is proposed for the stabilization of a higher aliphatic compound having at least one double bond in a molecule such as the sex pheromone compounds of agricultural pest insects used for the elimination of the pest insect b... | 11/15/1994 |
| 5352841 | Agent for dosing aqueous systems with acrolein, processes for making same, and method of treating an aqueous system Liquid acrolein, whose hazardous properties make handling difficult, is used to dose aqueous systems with acrolein in a biocidally effective concentration. Disclosed are agents which increase the ease and safety of acrolein handling and which are characte... | 10/04/1994 |
| 5183944 | Method of doping aqueous solutions with acrolein in biocidally effective concentration Aqueous solutions can be doped in a simple, safe and economic manner with acrolein in biocidally effective concentration by converting acrolein acetals in aqueous phase in the presence of a strongly acidic deacetalation catalyst into acrolein, cleaving th... | 02/02/1993 |
| 5103053 | Process for treating tert-amines A tert-amine which contains an acid-activated color body precursor is treated to prevent it or a derivative thereof, e.g., an amine oxide, betaine, or quaternary ammonium compound, from turning pink when exposed to acidic conditions by contacting it with ... | 04/07/1992 |
| 4599456 | Novel aldehyde-phosphine compositions and uses therefor Novel compositions are disclosed consisting essentially of aldehydes of the structure R--CHO (wherein R is a C8 -C30 carbon radical) and about 0.1 to about 5 parts by weight of a triarylphosphine per 100 parts of aldehyde. In additio... | 07/08/1986 |
| 4568771 | Method for stabilizing aliphatic higher aldehyde compounds Aliphatic higher aldehyde compounds, e.g. Z-11-hexadecenal and Z-9-tetradecenal, can be stabilized against oxidation to form a carboxylic acid and trimer formation by the addition of a stabilizer compound including a tertiary amine compound, benzophenone ... | 02/04/1986 |
| 4546205 | Stabilization of aldehydes An amino/phenolic composition effective for enhancing the storage stability of aldehydes, particularly sulfur-containing aliphatic aldehydes of low molecular weight, i.e., those containing from 3 to 10 carbon atoms.... | 10/08/1985 |
| 4526998 | Deodorized formalin Deodorized formalin produced by mixing formalin with additives comprising methyl salicylate and ethanol or methanol. A desired mixing ratio of these components is required.... | 07/02/1985 |
| 4491676 | Acid addition to aqueous dialdehyde solutions Described herein is a process for rapidly obtaining a stable freeze point depressed aqueous solution comprising a dialdehyde and an aliphatic monohydroxyl alcohol and/or polyhydroxyl alcohol by adding thereto a catalytic amount of a strong acid. Also incl... | 01/01/1985 |
| 4448977 | Stabilized acetal-acid compositions A storage stable composition of glutaraldehyde acetals and an organic acidic catalyst, which can be converted to glutaraldehyde at the site and upon demand, by the addition of water.... | 05/15/1984 |
| 4414419 | Stabilization of aldehydes Aldehydes having 3 to 14 carbon atoms are stabilized against polymerization and autocondensation by the addition thereto of triethanolamine or dimethylethanolamine in an amount at least 10 ppm (based on the amount of aldehyde) and preferably 20 to 100 ppm... | 11/08/1983 |
| 4335002 | Compositions of matter containing cis-3-hexenal Described are cis-3-hexenyl derivatives having the generic structure: ##STR1## wherein R is one of the moieties: ##STR2## which are useful in foodstuffs, flavorings, fragrances, perfumed articles (e.g. anionic, cationic or nonionic detergents, d... | 06/15/1982 |
| 4320231 | Aqueous solutions of dialdehydes and ketones Described herein is an aqueous solution comprising a dialdehyde of from 2 to 6 carbon atoms and an aliphatic ketone. This solution may be stored under conditions under which the aqueous dialdehyde solution would normally freeze.... | 03/16/1982 |
| 4312766 | Derivatives of cis-3-hexenol and process for producing compositions of matter containing cis-3-hexenal and products produced thereby and organoleptic uses thereof Described are cis-3-hexenyl derivatives having the generic structure: ##STR1## wherein R is one of the moieties: ##STR2## which are useful in foodstuffs, flavorings, fragrances, perfumed articles (e.g. anionic, cationic or nonionic detergents, d... | 01/26/1982 |
| 4289912 | Stabilization of liquid paraformaldehyde The tendency of liquid paraformaldehyde containing water and paraformaldehyde in, for example, approximately 80% to approximately 90% concentration to precipitate solid paraformaldehyde therefrom is retarded by the incorporation thereinto of an effective ... | 09/15/1981 |
| 4244876 | Acetal-acid compositions A storage stable composition of glutaraldehyde acetals and an organic acidic catalyst, which can be converted to glutaraldehyde at the site and upon demand, by the addition of water.... | 01/13/1981 |
| 4241098 | Flavoring with a mixture of cis-3-hexenal, trans-2-hexenal, cis-3-hexenyl formate, cis-3-hexenol and cis-3-hexenyl-cis-3-hexenoate Described is a method for augmenting or enhancing the aroma or flavor of a foodstuff comprising adding to the foodstuff from 0.05 up to about 500 parts per million of a mixture of cis-3-hexenal, trans-2-hexenal, cis-3-hexenyl formate, cis-3-hexenol and ci... | 12/23/1980 |
| 4200586 | Inhibiting the carbon-carbon double bond isomerization of substituted or unsubstituted hydrocarbon compounds The carbon-carbon double bond isomerization of a substituted or an unsubstituted hydrocarbon compound having olefinic unsaturation in a less stable form to an isomer of said compound having olefinic unsaturation in a more stable form is inhibited by conta... | 04/29/1980 |
| 4020109 | Stabilizing alkanals Polymer formation and aldol condensation by a hydrocarbyl aldehyde is prevented by adding to the aldehyde a trace to minor amount of readily oxidizable metals or cations having oxidation potentials greater than about -0.2 volts. In a typical embodiment, a... | 04/26/1977 |
