公开(公告)号：US20200347245A1

公开(公告)日：2020-11-05

申请号：US16929420

申请日：2020-07-15

Applicant: STEPAN COMPANY

Inventor： David R. ALLEN ,  Marcos ALONSO ,  Mary BEDDAOUI ,  Randal J. BERNHARDT ,  Aaron BROWN ,  Scott DILLAVOU ,  Xue Min DONG ,  Wilma GORMAN ,  John C. HUTCHISON ,  Gary LUEBKE ,  Renee LUKA ,  Franz LUXEM ,  Andrew D. MALEC ,  Ronald A. MASTERS ,  Dennis S. MURPHY ,  Nicholas PENDLETON ,  Irma RYKLIN ,  Patti SKELTON ,  Brian SOOK ,  Chris SPAULDING ,  Krista TURPIN ,  Gregory WALLACE ,  Michael WIESTER ,  Patrick Shane WOLFE

IPC: C09D7/45 ,  A01N25/30 ,  A61K8/46 ,  C11D1/14 ,  C11D1/29 ,  B01F17/00 ,  C04B38/10 ,  C07C29/147 ,  C07C41/06 ,  C07C303/14 ,  C07C303/32 ,  C07C309/08 ,  C07C309/10 ,  C11D1/37 ,  C11D1/66

Abstract: Sulfate and sulfonate derivatives of unsaturated fatty alcohols, processes for making them, and methods of using them are disclosed. In one aspect, a monounsaturated fatty alcohol composition is made by reducing a metathesis-derived monounsaturated alkyl ester. The fatty alcohol composition is then converted to a sulfate or sulfonate derivative by one or more of alkoxylation, sulfation, sulfonation, and sulfitation. Of particular interest are the sulfate and ether sulfate derivatives. Microscopy studies indicate that the unsaturated sodium sulfates in particular have a lamellar phase that should enable formulation at high actives levels. Sulfate compositions comprising 40 to 60 wt. % of a monounsaturated fatty primary alcohol sulfate and 40 to 60 wt. % of a secondary hydroxyalkyl primary alcohol sulfate are also disclosed. The derivatives and sulfate compositions are valuable for many end-use applications, including, for example, agricultural dispersants, water-soluble herbicides, anionic emulsifiers for agricultural use, hard surface cleaners, light-duty liquid detergents, personal cleansers, gas well foamers for oilfield applications, laundry detergents, enhanced oil recovery compositions, latex paints, and specialty foams.

公开(公告)号：US20200270510A1

公开(公告)日：2020-08-27

申请号：US15931665

申请日：2020-05-14

Applicant: STEPAN COMPANY

Inventor： John C. HUTCHISON

IPC: C09K8/536 ,  C09K8/86 ,  C09K8/60

Abstract: Flowback aid mixtures and oil-in-water microemulsions produced by combining an aqueous brine with the flowback aid mixtures are disclosed. The flowback aid mixture comprises an oil, a fatty alcohol ethoxylate, and a quaternized fatty amine ethoxylate. The amount of oil is less than or equal to 12 wt. % based on the amount of flowback aid mixture. The microemulsions have a surface tension at 25° C. less than 30 mN/m and a Z-average particle size as determined by dynamic light scattering at 25° C. of less than or equal to 10 nm. Also disclosed are processes that utilize the flowback aid mixtures. In one process, the mixture is introduced into a subterranean formation and is combined prior to or during its introduction into the formation with a formation brine, process water, or both to give the microemulsion. In one hydraulic fracturing process for recovering gas, oil, or both, a fracturing fluid and the flowback aid are co-injected into a subterranean formation to give the microemulsion.