[EN] BIODEGRADABLE SOLVENTS FOR THE CHEMICAL INDUSTRY<br/>[FR] SOLVANTS BIODÉGRADABLES POUR L'INDUSTRIE CHIMIQUE
申请人:UNIV DUBLIN CITY
公开号:WO2009024607A1
公开(公告)日:2009-02-26
This invention relates to ionic liquid (ILs) solvents for chemical synthesis based on an alkyl - imidazolium cation core containing ionic liquids which have enhanced biodegradability and reduced toxicity relative to existing imidazolium bases ILs such as 1-butyl-3-methylimidazolium (bmmim) salts. Many of the described ILs produce a score of over 60% biodegradability over 28 days in a biodegradability test such as the Sturm Test, the Closed Bottle Test (OECD 301D) or the CO2 Headspace Test (ISO 14593). The ILs of the invention comprise an alkyl substituted imidazolium cationic core having a -C=OX- side chain in the 3-position of the imidazole ring, wherein X = O, NH, N or S and an associated counteranion characterized in that the -C=OX side chain comprises at least one ether linkage. The biodegradable and non-toxic IL may be used as green solvents for the chemical, pharmaceutical, biofuel and biomass industries. The ILs of the invention are particularly useful in hydrogenation, pericyclic and metathesis reactions.
Process For The Preparation Of Onium Alkylsulfates Having A Low Halide Content
申请人:Ignatyev Nikolai
公开号:US20100222580A1
公开(公告)日:2010-09-02
The invention relates to a process for the preparation of onium alkylsulfates by reaction of an onium halide with a symmetrically substituted dialkyl sulfate, in which the alkyl group can have 1 to 14 C atoms, with an asymmetrically substituted dialkyl sulfate, in which one alkyl group can have 4 to 20 C atoms and the second alkyl group denotes methyl or ethyl, with an alkyl trialkylsilyl sulfate, with an alkyl acyl sulfate or with an alkyl sulfonyl sulfate, where the reaction with a dialkyl sulfate is carried out at room temperature.
This invention relates to ionic liquid (ILs) solvents for chemical synthesis based on an alkyl-imidazolium cation core containing ionic liquids which have enhanced biodegradability and reduced toxicity relative to existing imidazolium bases ILs such as 1-butyl-3-methylimidazolium (bmmim) salts. Many of the described ILs produce a score of over 60% biodegradability over 28 days in a biodegradability test such as the Sturm Test, the Closed Bottle Test (OECD 301D) or the CO
2
Headspace Test (ISO 14593). The ILs of the invention comprise an alkyl substituted imidazolium cationic core having a —C═OX— side chain in the 3-position of the imidazole ring, wherein X═O, NH, N or S and an associated counteranion characterized in that the —C═OX side chain comprises at least one ether linkage. The biodegradable and non-toxic IL may be used as green solvents for the chemical, pharmaceutical, biofuel and biomass industries. The ILs of the invention are particularly useful in hydrogenation, pericyclic and metathesis reactions.
An ingestible product containing a sweetness inhibitor and process for inhibiting sweetness in an ingestible product
申请人:GENERAL FOODS CORPORATION
公开号:EP0207516A1
公开(公告)日:1987-01-07
A sweetness inhibited ingestible product and a process for inhibiting sweetness is disclosed. In this product and process an effective sweetness inhibiting amount of a compound selected from the group consisting of an alkali metal hexyl sulfate, an alkaline earth metal hexyl sulfate, an alkali metal heptyl sulfate, an alkaline earth metal heptyl sulfate and mixtures thereof is added to an ingestible composition to which a sweetener has been added.