Synthèse et transformations chimiques des télomères de l'undécène‐10 oate de méthyle, 1

Belbachir, Mohammed; Boutevin, Bernard; Piétrasanta, Y.; Rigal, Gérard

doi:10.1002/macp.1982.021831006

Cited by 14 publications

(5 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second was obtained by the redox addition of allyl acetate in the presence of a ruthenium complex, copper or iron-based catalysts to obtain new telomeric compounds. 241 Other modifications of CTFE telomers using either phosphonated compounds, vinylidene chloride, 242 or allyl acetate 236 have also been investigated.…”

Section: Homopolymerization Of Chlorotrifluoroethylenementioning

confidence: 99%

(Co)polymers of Chlorotrifluoroethylene: Synthesis, Properties, and Applications

2013

View full text Add to dashboard Cite

Section: Homopolymerization Of Chlorotrifluoroethylenementioning

confidence: 99%

(Co)polymers of Chlorotrifluoroethylene: Synthesis, Properties, and Applications

2013

View full text Add to dashboard Cite

“…Then, we focused only on hydrogenophosphonates as CTAs. As shown by Boulhana et al, these products exhibit a low transfer constant, C T , on the styrenic monomers, whereas the production of monoadducts of vinyl acetate, allyl acetate, or methyl 10-undecenoate proved the high reactivity of those CTAs onto allyl monomers. In addition, the hydrogenophosphonate CTA introduces a phosphorus moiety at one chain end, which is interesting for future fireproofing applications.…”

Section: Resultsmentioning

confidence: 87%

Synthesis of Polyphosphorinanes. 1. Homopolymerization and Telomerization of Allyl Ether Phosphite

Negrell-Guirao

Boutevin

2009

Macromolecules

Self Cite

View full text Add to dashboard Cite

Cyclic allyl phosphonated monomers were synthesized by transesterification reaction between a glycol bearing a double bond and a hydrogenophosphonate and were fully characterized by NMR and IR spectroscopy. Radical homopolymerization of these monomers was carried out at 70 °C in the presence of α,α′-azoisobutyronitrile (AIBN) as initiator and acetonitrile as solvent. The thus-obtained polymers showed two SEC distributions, one composed of oligomers (with M n ≈ 800 g/mol) and one composed of high-molecular-weight polymers (with M n ≈ 100 000 g/mol). The latter were hyperbranched polymers suffering from solubility limitations for future industrial applications. Therefore, telomerization of one phosphonated monomer using dimethyl hydrogenophosphonate (HP(O)(OMe)2) as a chain transfer agent (CTA) limited the hyperbranching through two concomitant mechanisms of polymerization, which are discussed. For R 0 = 2 (R 0 represents initial [CTA]0/[monomer]0 molar ratio), the results showed a limited chain length, whereas monoadduct formation occurred for a R 0 value of 10.

show abstract

“…However, recent studies indicate that the catalyst loading in the first step could be significantly lowered, and that the second oxidation step could be performed under air if sufficient mixing of the solution can be guaranteed [ 34 ]. The direct Pd-catalyzed one-pot conversion of undecylenic acid to carboxyphosphonic acid ( 3 ) is thus more efficient than comparable two-step procedures [ 30 , 35 , 36 ].…”

Section: Resultsmentioning

confidence: 99%

Natural Product-Derived Phosphonic Acids as Corrosion Inhibitors for Iron and Steel

et al. 2022

View full text Add to dashboard Cite

Organic acids, typically derived from an oil-based value chain, are frequently used as corrosion inhibitors in industrial metal working fluids. The criteria for selection of these corrosion inhibitors have changed in the last decades, and are today not only performance-driven, but influenced by ecological considerations, toxicity and regulatory standards. We present scalable semisynthetic approaches to organic corrosion inhibitors based on phosphonic acids from renewable resources. They have been evaluated by chip filter assay, potentiodynamic polarization measurements, electrochemical impedance measurements and gravimetry for corrosion protection of iron and steel in an aqueous environment at slightly alkaline pH. The efficacy of several phosphonic acids tested was found to be strongly dependent on structural features influencing molecular self-assembly of protective layers, and the solubility of salts formed with di- and trivalent cations from the media or formed during corrosion. A carboxyphosphonic acid (derived from castor oil) was found to have remarkable anticorrosive effects in all media tested. We attribute the anticorrosion properties of this carboxyphosphonic acid to the formation of particularly stable protective layers on the metal surface. It might thus serve as a commercially attractive substitute for current acidic corrosion inhibitors, derived from renewable resources.

show abstract

Synthèse et transformations chimiques des télomères de l'undécène‐10 oate de méthyle, 1

Cited by 14 publications

References 3 publications

(Co)polymers of Chlorotrifluoroethylene: Synthesis, Properties, and Applications

(Co)polymers of Chlorotrifluoroethylene: Synthesis, Properties, and Applications

Synthesis of Polyphosphorinanes. 1. Homopolymerization and Telomerization of Allyl Ether Phosphite

Natural Product-Derived Phosphonic Acids as Corrosion Inhibitors for Iron and Steel

Contact Info

Product

Resources

About