Sentence examples for modified by polyamines from inspiring English sources
Among the four different dispersants applied here, the dispersant based on nonylphenol-formaldehyde resin modified by polyamines showed the best performance on the available live oils.
Four different asphaltene dispersants (polyisobutylene succinimide, polyisobutylene succinic ester, nonylphenol-formaldehyde resin modified by polyamines, and rapeseed oil amide) were prepared and their performance on two oils from an Iranian field under laboratory and reservoir conditions was studied.
In this study, four asphaltene dispersants, polyisobutylene succinimide (DB), polyisobutylene succinic ester (DF), nonylphenol-formaldehyde resin modified by polyamines (DP), and rapeseed oil amide (DR) were evaluated under laboratory and reservoir conditions.
In contrast to dispersants DF and DR, it seems that ADs with nonylphenol-formaldehyde resin modified by polyamines (DP) and polyisobutylene succinimide (DB) bases show higher efficiency on these oil samples.
Among different dispersants, the dispersant DP, based on nonylphenol-formaldehyde resin modified by polyamines, proved to have the best performance under laboratory and reservoir conditions as it moved the onset pressure from 4300 to 3600 psi.
Table 2 Dispersants Chemical Basic structure MW, kg/mola DB Polyisobutylene succinimide 3900 DF Polyisobutylene succinic ester 4260 DP Nonylphenol-formaldehyde resin modified by polyamines 8030 DR Rapeseed oil amide 560 aAverage molecular weight was determined by gel permission chromatography (GPC).
Owing to its properties potato starch was chosen as starting material and modified by oxidization and coupling of a ligand (polyamine) enabling modified starch to chelate radionuclides.
Temperatures are often modified by sea winds.
(modified) by James W. Heisig.
Second, elevated TG2 activity is observed in HD patients and in various model systems (Karpuj et al, 1999; Lesort et al, 2000), and levels of biomarkers for proteins modified by TG2 are increased in the cerebral spinal fluid of HD patients (γ-glutamyl amines such as γ-glutamyl ε-lysine and several γ-glutamyl polyamines) (Jeitner et al, 2008).
This research deals with polymer concrete, PC, based on epoxy resin hardened with a modified polyamines.
