摘要:
A method to enhance solubility of an active compound comprises combining an active compound, having an aqueous solubility that is less than or equal to about 10 mg/mL, and an amount of methoxypolyethylene glycol that is sufficient to increase the aqueous solubility of the active compound. Enhancement of aqueous solubility for this combination may be significantly greater than that of an active compound in combination with an equivalent amount of polyethylene glycol. Particularly enhanced solubility is shown where a small amount of water is also included. The invention may be used in a wide variety of applications, such as for pharmaceutical, agricultural, antimicrobial, and personal care products.
摘要:
A method to enhance solubility of an active compound comprises combining an active compound, having an aqueous solubility that is less than or equal to about 10 mg/mL, and an amount of methoxypolyethylene glycol that is sufficient to increase the aqueous solubility of the active compound. Enhancement of aqueous solubility for this combination may be significantly greater than that of an active compound in combination with an equivalent amount of polyethylene glycol. Particularly enhanced solubility is shown where a small amount of water is also included. The invention may be used in a wide variety of applications, such as for pharmaceutical, agricultural, antimicrobial, and personal care products.
摘要:
Novel mixtures of long-chain (C10-C20) olefins are functionalized by conversion to aldehydes using an OXO process, or to sulfates, sulfonates, sulfones, sulfides, or sulfoxides by direct sulfonation. The aldehydes may then be hydrogenated to form alcohols, or aminated to form amines or amides. The olefins starting mixture may be acquired as a byproduct of the tetramerization of ethylene in the presence of certain chromium-containing tetramerization catalysts. The functionalized mixtures, and derivatives prepared therefrom such as alkoxylates prepared from the alcohols, may be useful as surfactants that may offer improved performance in many applications, while their preparation based on a byproduct mixture reduces their cost and also reduces waste-handling issues for this non-targeted stream.
摘要:
Novel mixtures of long-chain (C10-C20) olefins are functionalized by conversion to aldehydes using an OXO process, or to sulfates, sulfonates, sulfones, sulfides, or sulfoxides by direct sulfonation. The aldehydes may then be hydrogenated to form alcohols, or aminated to form amines or amides. The olefins starting mixture may be acquired as a byproduct of the tetramerization of ethylene in the presence of certain chromium-containing tetramerization catalysts. The functionalized mixtures, and derivatives prepared therefrom such as alkoxylates prepared from the alcohols, may be useful as surfactants that may offer improved performance in many applications, while their preparation based on a byproduct mixture reduces their cost and also reduces waste-handling issues for this non-targeted stream.
摘要:
A polyalkylene glycol comprising: a random copolymer comprising units derived from EO and units derived from PO initiated with polytetrahydrofuran; wherein the polyalkylene glycol has a pour point of less than or equal to −30° C. as measured using ASTM D97 and a traction value of less than 0.0165 at a contact pressure of 1.25 GPa, speed=2 m/s, SRR of 100% and temperature of 80° C. is provided. Also provided are lubricant compositions containing such polyalkylene glycol.
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:
Provided are new functionalized surfactants and methods of their preparation and use. The surfactants are compounds of formula I: wherein R1, R2, and R3 are as defined herein.
摘要:
Disclosed are compositions of the formula wherein R1 and R2 are each independently hydrogen or a linear or branched alkyl group containing from (1) to about (18) carbon atoms, provided that R1 and R2 together contain from about (8) to about (18) carbon atoms, and further provided that less than about 10 mole percent of R1 or R2 is hydrogen; R3 is hydrogen or an alkyl radical containing from (1) to about (6) carbon atoms; R4 and R5 are each independently hydrogen or an alkyl radical containing from (2) to about (6) carbon atoms, provided that R4 and R5 together contain from (2) to about (6) carbon atoms; m is an average value ranging from (0) to about (10), and n is an average value ranging from about (3) to (about 40), provided that the group containing m and the group containing n may be exchanged with one another as to position; and z is an average value ranging from about (0.5) to about (5). These compositions are conveniently prepared by a process including at least two steps and are useful as surfactants.
摘要:
Novel sulfur-containing compositions comprise a polyether polysulfide or an ether polysulfide. The polyether polysulfide may be based upon an alkoxylate (an alcohol or glycol-initiated compound) that is a copolymer of at least two of ethylene oxide, propylene oxide and butylene oxide. The polyether polysulfide may alternatively be based upon a homopolymer of ethylene oxide, propylene oxide or butylene oxide. The ether polysulfide may be based upon a methoxy-capped polyglycol or an alkyl ether of 1,3-dichloro-2-propanol.
摘要:
Provided are new anionic surfactants and methods of their preparation and use. The surfactants are compounds of the formula I: wherein R, R1, R2, R3, R4, R5, and R6 are as defined herein.