Viscosity-stabilized aqueous acrylamide polymer solutions and use of viscosity stabilizer compounds
申请人:PHILLIPS PETROLEUM COMPANY
公开号:EP0039083A1
公开(公告)日:1981-11-04
Selected sulfur-containing compounds function as solution viscosity stabilizers in aqueous compositions comprising acrylamide polymers containing a redox couple or components which can produce a redox couple in the presence of the solution. The aqueous compositions are useful in post-primary oil recovery involving the use of thickened fluids as mobility buffers and mobility control agents.
Synthesis of Novel Representatives of Phosphoryl Guanidine Oligonucleotides
作者:S. A. Zhukov、D. V. Pyshnyi、M. S. Kupryushkin
DOI:10.1134/s1068162021020291
日期:2021.3
Novel representatives of phosphoryl guanidine oligonucleotide derivatives were prepared in this study. A synthetic scheme has been proposed and implemented suitable for the preparation of a wide range of diaminocarbenium azides starting from various secondary amines for subsequent incorporation of tetrasubstituted guanidine residues into the oligonucleotides by the Staudinger reaction. A number of