Silane-silanol condensation catalyzed by organotin compounds

Fierens, Paul; Vandendunghen, G.; Segers, W.; Elsuwe, R. van

doi:10.1007/bf02061303

Cited by 21 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One way to improve the bonding is to add more coupling agents to the precursor of PDMS, but this wastes the coupling agents. Another way is to accelerate the hydrolysis and condensation of the trialkoxysilane in the elastomer by the tin-based catalyst 30 – 32 . This would be an efficient choice for most elastomers, e.g., polybutadiene (Fig.…”

Section: Resultsmentioning

confidence: 99%

Bonding dissimilar polymer networks in various manufacturing processes

et al. 2018

View full text Add to dashboard Cite

Recently developed devices mimic neuromuscular and neurosensory systems by integrating hydrogels and hydrophobic elastomers. While different methods are developed to bond hydrogels with hydrophobic elastomers, it remains a challenge to coat and print various hydrogels and elastomers of arbitrary shapes, in arbitrary sequences, with strong adhesion. Here we report an approach to meet this challenge. We mix silane coupling agents into the precursors of the networks, and tune the kinetics such that, when the networks form, the coupling agents incorporate into the polymer chains, but do not condensate. After a manufacturing step, the coupling agents condensate, add crosslinks inside the networks, and form bonds between the networks. This approach enables independent bonding and manufacturing. We formulate oxygen-tolerant hydrogel resins for spinning, printing, and coating in the open air. We find that thin elastomer coatings enable hydrogels to sustain high temperatures without boiling.

show abstract

Section: Resultsmentioning

confidence: 99%

Bonding dissimilar polymer networks in various manufacturing processes

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The well known natures of their bonding are mono, di, tetra and oligomeric ladder, cyclic or hexameric structure [6e8]. Organotin carboxylates have also a wide range of industrial applications as catalysts for esterification and transesterification [9,10], silicone curing [11], formation of polyurethane [12], antifouling paints [13e15], PVC stabilization [16], as homogeneous catalysts [17], and as ion carriers in electrochemical membranes design [18,19]. Very few reports are available in literature regarding the use of organotin carboxylates for the transesterification of vegetable oil into biodiesel.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, spectroscopic characterization, X-ray structures, biological screenings, DNA interaction study and catalytic activity of organotin(IV) 3-(4-flourophenyl)-2-methylacrylic acid derivatives

Tariq

Muhammad

Sirajuddin

et al. 2013

Journal of Organometallic Chemistry

View full text Add to dashboard Cite

“…Such compounds have been developed as important thermal stabilizers for plastics, as catalysts, and as biocides [1]. Organotin(IV) carboxylates find applications as catalysts in esterification [2], silicone curing [3], formation of polyurethane [4], antifouling paints [5], PVC stabilization [6] and transesterification of vegetable oil into biodiesel [7]. They also have been applied as anti-bacterial and anti-fungal agents and have received considerable attention as anti-tumor and anti-cancer drugs [8] due to their ability to bind with phosphate of DNA in tumor cells and damage it.…”

mentioning

confidence: 99%

Synthesis, characterization, biological activities, crystal structure and DNA binding of organotin(IV) 5-chlorosalicylates

Hussain¹,

Ali

Shahzadi

et al. 2015

Journal of Coordination Chemistry

View full text Add to dashboard Cite

New organotin(IV) carboxylates, R 2 SnL 2 (R = n-Bu: 1), R 2 Sn(Cl)L (R = n-Bu: 2) and R 3 SnL (R = Me: 3; n-Bu: 4; Ph: 5), have been synthesized by stirring 5-chloro-2-hydroxybenzoic acid HL with KOH and R 2 SnCl 2 (R = n-Bu)/R 3 SnCl (R = Me, n-Bu, Ph) in methanol at room temperature. The complexes along with ligand have been characterized by FT-IR, ( 1 H, 13 C) NMR, EI-MS and single crystal XRD crystallography. FT-IR data indicated bidentate coordination of carboxylate. NMR data suggested six-or five-coordinate geometry of organotin(IV) carboxylates. Single crystal XRD of 1 demonstrated skew-trapezoidal geometry around the tin center, with the basal plane occupied by four oxygens and the two butyl groups lying in distorted axial position. Complexes 1, 2 and 5 exhibited interaction with SS-DNA (salmon sperm) and suggests intercalating mode of binding. The complexes displayed significant antimicrobial activities against bacterial and fungal strains as compared to free ligand. The hemolytic activity of the complexes was lower compared to Triton-X 100 (positive control, 100% lysis) and higher than PBS (negative control, 0% lysis). Complex 4 was the most potent inhibitor of bacterial/fungal growth.

show abstract

Silane-silanol condensation catalyzed by organotin compounds

Cited by 21 publications

References 4 publications

Bonding dissimilar polymer networks in various manufacturing processes

Bonding dissimilar polymer networks in various manufacturing processes

Synthesis, spectroscopic characterization, X-ray structures, biological screenings, DNA interaction study and catalytic activity of organotin(IV) 3-(4-flourophenyl)-2-methylacrylic acid derivatives

Synthesis, characterization, biological activities, crystal structure and DNA binding of organotin(IV) 5-chlorosalicylates

Contact Info

Product

Resources

About