Hydrolytic polycondensation of sodiumoxymethyl(dialkoxy)silanes as a method for producing linear poly[(sodiumoxy)methylsilsesquioxane]

Obrezkova, M. A.; Василенко, Н. В.; Muzafarov, А. М.

doi:10.1134/s1560090409110062

Cited by 12 publications

(11 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, the result of the overall process will depend on the relation between the reaction rates and the equilibrium positions under particular conditions. Previous studies [26] have resulted in a method for obtaining a linear polyfunctional methylsiloxane having functional -ONa groups at every silicon atom of the backbone. An analysis of feasible interactions in the sodiumoxymethyldi(alkoxy)silane-water system made it possible to determine several factors of hydrolytic condensation that govern the ratio between the main and side reactions.…”

Section: Synthesis Of Polyfunctional Matrixmentioning

confidence: 99%

“…The high-functional linear polymer (poly(sodium methylsiloxanolate)) was obtained by the hydrolytic polycondensation of sodium diethoxy(methyl)silanolate in dimethyl sulfoxide (DMSO) [26] as presented in Scheme 2.…”

Section: Synthesis Of Polyfunctional Matrixmentioning

confidence: 99%

“…Synthesis of poly(sodium methylsiloxanolate) was carried out according to ref [26]. A solution of water (4.81 g; 0.267 mol) in dimethoxyethane (200 mL) was slowly added to a solution of sodium diethoxymethylsilanolate (46 g; 0.267 mL) in abs DMSO (125 mL) at reflux.…”

Section: Synthesis Of Poly(sodium Methylsiloxanolate)mentioning

confidence: 99%

“…It became possible thanks to the earlier developed synthesis of a new polyfunctional polymethylsiloxane matrix containing high-reactive functional -ONa groups at every silicon atom of the backbone [25,26]. The aim of the current work is to apply this approach to obtaining comb-like polymethylsiloxanes characterized by different molecular parameters, but having chemical composition identical to PDMS.…”

Section: Introductionmentioning

confidence: 97%

See 3 more Smart Citations

Comb-Like Polymethylsiloxanes. Synthesis, Structure and Properties

Obrezkova

Калинина

Pavlichenko

et al. 2014

Silicon

Self Cite

View full text Add to dashboard Cite

Comb-like polymethylsiloxanes consisting of a silsesquioxane backbone and dimethylsiloxane side chains were synthesized by means of the "grafting to" method using a linear polyfunctional matrix [SiMe(ONa)O] n and monofunctional oligomers (CH 3 ) 3 Si[OSi(CH 3 ) 2 ] n OCOCH 3 . The effects of architecture of the synthesized methylsiloxane polymers on their physicochemical properties, rheology, and behavior at the air-water interface were studied and compared with those for the linear analoguepolydimethylsiloxane.

show abstract

Section: Synthesis Of Polyfunctional Matrixmentioning

confidence: 99%

Section: Synthesis Of Polyfunctional Matrixmentioning

confidence: 99%

Section: Synthesis Of Poly(sodium Methylsiloxanolate)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

See 2 more Smart Citations

Comb-Like Polymethylsiloxanes. Synthesis, Structure and Properties

Obrezkova

Калинина

Pavlichenko

et al. 2014

Silicon

Self Cite

View full text Add to dashboard Cite

show abstract

“…These polymers are used as cat alysts, thermal stabilizers, components of thermally stable coatings, etc. [197][198][199][200][201][202][203][204][205].…”

Section: Polyorganosiloxanesmentioning

confidence: 99%

Achievements in polycondensation and condensation polymers

Sapozhnikov

Vygodskii

2015

Polym. Sci. Ser. B

View full text Add to dashboard Cite

show abstract

Dumbbell‐Shaped, Graft and Bottlebrush Polymers with All‐Siloxane Nature: Synthetic Methodology, Thermal, and Rheological Behavior

Goncharova

Tukhvatshin

Kholodkov

et al. 2020

Macromol. Rapid Commun.

View full text Add to dashboard Cite

A methodology for synthesizing a wide range of dumbbell‐shaped, graft and bottlebrush polymers with all‐siloxane nature (without carbosilane linkers) is suggested. These macroarchitectures are synthesized from SiOH‐containing compounds—silanol (Et3SiOH) and siloxanol dendrons of the first and second generations, with various peripheral substituents (Me or Et)—and from linear siloxanes comprising terminal and internal SiH groups by the Piers–Rubinsztajn reaction. Products and key building blocks are obtained in yields up to 95%. These polymers are heat and frost‐resistant siloxanes. As it turns out, the product physical properties are determined not only by the macromolecular structure, the linear chain length, the size and frequency of branched pendant, but also by the type of peripheral substituents—Me or Et—in the pendant. Thus, the viscosity of the graft polymers with branched pendant groups comprising peripheral Me‐groups is more than ≈3–5 fold lower than that of analogous polymers with peripheral Et‐groups.

show abstract

Hydrolytic polycondensation of sodiumoxymethyl(dialkoxy)silanes as a method for producing linear poly[(sodiumoxy)methylsilsesquioxane]

Cited by 12 publications

References 10 publications

Comb-Like Polymethylsiloxanes. Synthesis, Structure and Properties

Comb-Like Polymethylsiloxanes. Synthesis, Structure and Properties

Achievements in polycondensation and condensation polymers

Dumbbell‐Shaped, Graft and Bottlebrush Polymers with All‐Siloxane Nature: Synthetic Methodology, Thermal, and Rheological Behavior

Contact Info

Product

Resources

About