Ring opening of epoxides by phthalimide in the presence of 1,1,3,3-tetraethy-2-tetr-butyl guanidine as catalyst;

Preparation of New Adsorbent for Bilirubin by Immobilizing Guanidine on Crosslinked Polyvinyl Alcohol Gel;

Synthesis of O,O dialkyl guanidine and derivatives;

Therefore,in allusion to geological properties of strong water sensitivity of reservoir,compound fracturing technology of guanidine gum and clean fracturing fluid is selected preferentially.

This article introduces an organic-borate crosslinked guanidine gum fracturing fluids and theirs performance,and describes the application of these fracturing fluids in Baima-Songhua.

The performances of guar gum such as water-insolube solid content,crosslinking,temperature resistance,and salt tolerance were evaluated in this paper.

For a type of modified guar gum being used in acidic and CO2-foam fracturing,its main properties is evaluated in this paper.

In this paper,the prepararations for cationic etherity agent and the synthetic method for this guar gum with high degree of substitution have been researched.

In this review, recent progresses in the research of guanidinium ionic liquids are surveyed in three aspects, syntheses, properties and applications.

Two crystalline inclusion compounds, [(CH 6N 3)] 2[(C 12 H 8O 7S 2)]·MeOH·2(H 2O) (1 ) and [(CH 6N 3)] 2[(C 12 H 8O 7S 2)]·(C 10 H 8) (2 ), were synthesized from guanidinium ions [G, C(NH 2) + 3] and polar pillar 4,4′-phenyletherdisulfonate (PEDS), and structurally characterized by single crystal X-ray diffraction analysis.