摘要:
Described is a method of chemically modifying a starting composition comprising polyunsaturated alkene compounds in order to convert at least a portion of the polyunsaturated alkene compounds into functionalized monounsaturated alkene compounds. The separated monounsaturated alkene compounds may be useful, for example, as a starting material in the synthesis of organic chemicals such as diacids, diesters, and the like.
摘要:
This disclosure relates generally to olefin metathesis, and more particularly relates to the synthesis of terminal alkenes from internal alkenes using a cross-metathesis reaction catalyzed by an olefin metathesis catalyst. According to one aspect, for example, a method is provided for synthesizing a terminal olefin, the method comprising contacting, in the presence of a ruthenium alkylidene metathesis catalyst, an olefinic substrate comprised of at least one internal olefin with a cross metathesis partner comprised of an alpha olefinic reactant, under reaction conditions effective to allow cross-metathesis to occur, wherein the reaction conditions include a reaction temperature of at least 35 °C. The methods, compositions, reactions and reaction systems herein disclosed have utility in the fields of catalysis, organic synthesis, and industrial chemistry.
摘要:
Antimicrobial compositions comprising a combination of a first antimicrobial agent of Formula I and a second antimicrobial agent of Formula IV are reported. The antimicrobial compositions including a combination of antimicrobial agents of Formula (I) and Formula (IV) are effective as an antimicrobial agent with MIC levels of about 0.1% or less against certain fungi. Also reported are antimicrobial products such as consumer products, industrial preparations, and food and feed formulations.
摘要:
Described are methods of making organic compounds by metathesis chemistry. The methods of the invention are particularly useful for making industrially-important organic compounds beginning with starting compositions derived from renewable feedstocks, such as natural oils. The methods make use of a cross-metathesis step with an olefin compound to produce functionalized alkene intermediates having a pre-determined double bond position. Once isolated, the functionalized alkene intermediate can be self-metathesized or cross-metathesized (e.g., with a second functionalized alkene) to produce the desired organic compound or a precursor thereto. The method may be used to make bifunctional organic compounds, such as diacids, diesters, dicarboxylate salts, acid/esters, acid/amines, acid/alcohols, acid/aldehydes, acid/ketones, acid/halides, acid/nitriles, ester/amines, ester/alcohols, ester/aldehydes, ester/ketones, ester/halides, ester/nitriles, and the like.
摘要:
Disclosed are improved methods for conducting metathesis utilizing polyunsaturated fatty acid compositions (e.g., polyunsaturated fatty acid polyol esters, polyunsaturated fatty acids, polyunsaturated fatty esters, and mixtures), such as those found in naturally occurring oils and fats, as the starting material. The inventive methods involve hydrogenation of polyunsaturated fatty acid compositions prior to metathesis, thereby providing partially-hydrogenation compositions having a relatively higher amount of monounsaturated fatty acid species. The partially hydrogenated composition can then be subjected to metathesis to provide a metathesis product composition containing industrially useful compounds.
摘要:
The invention provides surface coating compositions comprising a preservative comprising 9-decenoic acid, salts of 9-decenoic acid, esters of 9-decenoic acid, or combinations thereof. The surface coating compositions may be water-based coatings (e.g., a latex paint) or solvent-based coatings (e.g., a solvent-based paint). The surface coating compositions may be paints, stains, varnishes, concrete coatings, anti-graffiti coatings, and the like. Methods for protecting a surface coating composition from in-can spoilage and protecting a coating of the surface coating composition from deterioration by the action of microorganisms are also described.
摘要:
The invention provides surface coating compositions comprising a preservative comprising 9-decenoic acid, salts of 9-decenoic acid, esters of 9-decenoic acid, or combinations thereof. The surface coating compositions may be water-based coatings (e.g., a latex paint) or solvent-based coatings (e.g., a solvent-based paint). The surface coating compositions may be paints, stains, varnishes, concrete coatings, anti-graffiti coatings, and the like. Methods for protecting a surface coating composition from in-can spoilage and protecting a coating of the surface coating composition from deterioration by the action of microorganisms are also described.
摘要:
Methods using catalysts and reaction conditions to produce signi ficantly improved yields (and thereby higher purity) of olefin metathesis products, with greatly reduced amounts of impurities. These techniques include in one instance reduction in temperature of reaction, and in another, the use of chemical compounds that act as reaction inhibitors of unwanted reactions to minimize or prevent formation of unwanted impurities.
摘要:
Antimicrobial compositions comprising a combination of a first antimicrobial agent of Formula I and a second antimicrobial agent of Formula IV are reported. The antimicrobial compositions including a combination of antimicrobial agents of Formula (I) and Formula (IV) are effective as an antimicrobial agent with MIC levels of about 0.1% or less against certain fungi. Also reported are antimicrobial products such as consumer products, industrial preparations, and food and feed formulations.
摘要:
Disclosed are improved methods for conducting metathesis utilizing polyunsaturated fatty acid compositions (e.g., polyunsaturated fatty acid polyol esters, polyunsaturated fatty acids, polyunsaturated fatty esters, and mixtures), such as those found in naturally occurring oils and fats, as the starting material. The inventive methods involve hydrogenation of polyunsaturated fatty acid compositions prior to metathesis, thereby providing partially-hydrogenation compositions having a relatively higher amount of monounsaturated fatty acid species. The partially hydrogenated composition can then be subjected to metathesis to provide a metathesis product composition containing industrially useful compounds.