Coordinative chain transfer polymerization of 1-decene in the presence of a Ti-based diamine bis(phenolate) catalyst: a sustainable approach to produce low viscosity PAOs

Abstract

<p>A Ti-based diamine bis(phenolate) catalyst, [Ti{2,2′-(OC₆H₂-4,6-<italic>t</italic>Bu₂)₂NHMePhMeNH}Cl₂], was synthesized and fully characterized by elemental analysis and NMR spectroscopy.</p>

1‐Decene oligomerization by new complexes bearing diamine‐diphenolates ligands: Effect of ligand structure

“…It can be deduced that the differences in propagation rate constants in three synthesized catalysts is due to the different electronic nature in the three employed ligand structure. [3] Exploring of calculated k vinylidene and k vinylene rate constants disclosed the fact that, for all synthesized catalyst systems, k vinylene is higher than k vinylidene value, and comparison of these values for all three catalyst systems indicates the fact that Cat2 is more prone to produce terminated chains with vinylidene groups which [8,11,12] Viscosity results of the produced oils were collected in Table 4. According to obtained results, increasing length of the aliphatic linkage between nitrogen donors led to increasing of KV values, where KV 100 values of 2.9, 3.9, and 4.1 cSt were determined for synthesized oligomers with Cat1, Cat2, and Cat3, respectively.…”

“…[7] Recently, we have studied the mechanism of the diamine-diphenolate-M (where M = Ti, Zr, and Hf) type, [8,9] metallocene, [10] and supported AlCl 3 catalyzed 1-decene or 1-octene oligomerization reactions, [11] as well as the use of those types of catalysts in a coordination chain transfer polymerization (CCTP) procedure to produce fully hydrogenated low viscosity PAOs. [12] The current paper is as follows from the α-olefin oligomerization program, [13][14][15] and its goal is to investigate the mechanism and kinetics of the higher olefin oligomerization catalyzed by the newfound group IV diamine diphenolate complexes. Meanwhile, it has been scientifically accepted that the electrophilicity of the complex and subsequently the polymerization behavior can be influenced by changing the linking group nature.…”

Chelating Agents Usage in Optimization of Fracturing Fluid Rheology Prepared from Seawater

“…There are two methods to crosslink guar derivative, reversible and irreversible crosslinking, depending on the expected shear rate of the operation. Under specific catalysts, several polymer types can be produced with the desired properties; one of these catalysts is introduced by Hanifpour et al [ 27 ]. The constitutional structure of the reversible polymers can be changed using these catalysts; once it is removed, the stability as irreversible polymers can be retained.…”

Single‐phase photo‐cross‐linkable adhesive synthesized from methacrylic acid‐grafted 1‐decene/9‐decene‐1‐ol cooligomer

“…[3,4] In this line, a number of methods for copolymerizing polar vinyl monomers with nonpolar olefin monomers have been studied. [5][6][7][8][9][10][11][12][13] Aforementioned copolymers/cooligomers have applications in industries such as clean diesel fuel alkanes, [14] octane boosters and new monomers, [15] adhesives, [16,17] compatilizers [18,19] synthetic lubricants, [20][21][22][23] additives for fuels [20] or in the paper, and leather industries. [24,25] Furthermore, hydroxy-terminated oligopropenes are useful as initiators in caprolactone polymerization to form poly(propene-bcaprolactone) block copolymers.…”

“…[31] Here, we wish to describe for the first time the synthesis and structural investigation of the (co)oligomers of 1-decene with 9-decene-1-ol by using our previous synthesized catalyst system based on ONNO type ligand and Ti metal (Scheme 1). [23] In the next step, the hydroxyl groups of the cooligomer chains were reacted with methacryloyl chloride in order to produce photo-curable adhesive with strong adhesion abilities (see Scheme 2). Then, the adhesion properties of the newfound oligo-1decene based adhesive were evaluated by applying synthesized adhesives on different substrates.…”