摘要:
A compound comprising a sulfonated dihydrocarbyl(arylalkyl)phosphine of formula R1R2PR3—(SO3M)n, wherein the R1 and R2 are selected individually from alkyl, aralkyl, and alicyclic groups, and R3 is a divalent or polyvalent arylalkylene radical such that the alkyl moiety is bonded to the phosphorus atom and the aryl moiety is bonded to the alkyl and is also substituted with one or more sulfonate groups; M is a monovalent cation, and n ranges from 1 to 3. The compound is useful as a ligand in transition metal-ligand complex catalysts that are capable of catalyzing the hydroformylation of an olefinically-unsaturated compound with carbon monoxide and hydrogen to form one or more corresponding aldehyde products. The ligand is incapable of alkyl-aryl exchange, thereby leading to reduced ligand usage and improved ligand and transition metal, e.g., rhodium, recovery and recycling.
摘要:
A compound comprising a sulfonated dihydrocarbyl(arylalkyl)phosphine of formula R1R2PR3—(SO3M)n, wherein the R1 and R2 are selected individually from alkyl, aralkyl, and alicyclic groups, and R3 is a divalent or polyvalent arylalkylene radical such that the alkyl moiety is bonded to the phosphorus atom and the aryl moiety is bonded to the alkyl and is also substituted with one or more sulfonate groups; M is a monovalent cation, and n ranges from 1 to 3. The compound is useful as a ligand in transition metal-ligand complex catalysts that are capable of catalyzing the hydroformylation of an olefinically-unsaturated compound with carbon monoxide and hydrogen to form one or more corresponding aldehyde products. The ligand is incapable of alkyl-aryl exchange, thereby leading to reduced ligand usage and improved ligand and transition metal, e.g., rhodium, recovery and recycling.
摘要:
Polyol ether compounds and processes for their preparation. A representative process comprises melting a polyol, and reacting the molten polyol, a carbonyl compound, and hydrogen in the presence of a hydrogenation catalyst to provide the poly of ether. The polyol ether has surfactant properties.
摘要:
New polyol ether compounds and a process for their preparation. The process comprises reacting a polyol, a carbonyl compound, and hydrogen in the presence of hydrogenation catalyst, to provide the polyol ether. The molar ratio of polyol to carbonyl compound in the process is greater than 5:1.
摘要:
The invention relates to processes for the etherification of olefins with alcohols. According to one aspect, a heterogeneous etherification catalyst is used under conditions that permit limiting the contact time between the desired product and the catalyst, thereby mitigation reverse reactions. According to a second aspect, a recycling process is used that significantly increases the yield of desired product.
摘要:
A compound comprising a class of sulfonated triorganophosphine compounds of formula R1R2P—R3[—O—(CH2)n—(SO3M)]m, wherein the R1 and R2 are selected individually from alkyl, aralkyl, and alicyclic groups, wherein R3 represents a divalent or polyvalent alkylene or alicyclic radical that is bonded to the phosphorus atom and to one or more sulfonate substituents via an alkylether link, and further wherein R3 does not contain any aryl moieties; n is an integer reflecting a number of methylene groups in the alkylether link; M represents a monovalent cation; and m is an integer representing a total number of sulfonated alkylether substituents. The compound is useful as a ligand in transition metal-ligand complex catalysts that are capable of catalyzing the hydroformylation of an olefinically-unsaturated compound with carbon monoxide and hydrogen to form one or more corresponding aldehyde products. The ligand is incapable of alky-aryl exchange, thereby leading to reduced ligand usage and improving ligand and rhodium recovery and recycling.
摘要:
Provided is a surfactant composition comprising an oligoglycerol compound of formula I, wherein R and m are as defined above. The compounds exhibit favorable surfactancy properties. Advantageously, the compounds may be prepared from renewable materials.
摘要:
Embodiments of the present disclosure include polycyclopentadiene compounds represented by Formula (I): in which each X is either a hydrogen or a cyano group (N≡C—), n has an average value from zero to 20; each m independently has a value of zero to 3; p has a value of zero to 20; each R is independently a halogen, a nitrile group, a nitro group, an alkyl group, an alkoxy group, an alkenyl group, or an alkenyloxy group, where the alkyl group, the alkoxy group, the alkenyl group, and the alkenyloxy group each independently contain 1 to 6 carbon atoms; and each Q is independently hydrogen or an alkyl group containing 1 to 6 carbon atoms. Embodiments of the present disclosure also include a curable composition that includes the polycyclopentadiene compound(s) of Formula (I) and a curing amount of a resin or a catalyst amount of a catalyst and/or a cure accelerating amount of an accelerating agent.
摘要:
The invention relates to processes for the etherification of olefins with alcohols. According to one aspect, a heterogeneous etherification catalyst is used under conditions that permit limiting the contact time between the desired product and the catalyst, thereby mitigation reverse reactions. According to a second aspect, a recycling process is used that significantly increases the yield of desired product.
摘要:
The instant invention provides cycloaliphatic diamines and a method of making the same. The cycloaliphatic diamines according to the instant invention comprise the reaction product of one or more cycloaliphatic cyanoaldehydes selected from the group consisting of 1,3-cyanocyclohexane carboxaldehyde, 1,4-cyanocyclohexane carboxaldehyde, mixtures thereof, and combinations thereof, hydrogen, and ammonia fed into a continuous reductive amination reactor system; wherein the one or more cycloaliphatic cyanoaldehydes, hydrogen, and ammonia are contacted with each other in the presence of one or more heterogeneous metal based catalyst systems at a temperature in the range of from 80° C. to about 160° C. and a pressure in the range of from 700 to 3500 psig; and wherein one or more cycloaliphatic diamines are formed; and wherein said one or more cycloaliphatic diamines are selected from the group consisting of 1,3-bis(aminomethyl)cyclohexane, 1,4-bis(aminomethyl)cyclohexane, combinations thereof, and mixtures thereof.