Levasil 50 50

Manufactured by AkzoNobel

Levasil 50/50 is a colloidal silica product manufactured by AkzoNobel. It is a clear, aqueous dispersion of amorphous silica particles with a pH range of 9.0 to 10.5. The product has a SiO2 content of approximately 50% by weight.

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Lab products found in correlation

Ethanol absolute for analysis, by Merck Group (2 mentions) Absolute tetrahydrofuran thf, by Biosolve (2 mentions) Synergy system, by Merck Group (2 mentions) 2 propanol, by Merck Group (2 mentions) 3 aminopropyltriethoxysilane aptes, by Merck Group (2 mentions) Vm100, by Arkema (1 mentions) Tetraethyl orthosilicate, by Merck Group (1 mentions) Ammonium hydroxide solution, by Merck Group (1 mentions) Hydrochloric acid 37, by Merck Group (1 mentions) Bindzil 40 130, by AkzoNobel (1 mentions) Tetraethyl orthosilicate teos, by Merck Group (1 mentions)

3 protocols using levasil 50 50

Silica-Based Nanocomposite Synthesis

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Tetraethyl
orthosilicate (TEOS, ≥99.0%)
and 2-propanol (99.5%) were purchased from Aldrich (Milwaukee, WI).
(3-Aminopropyl)triethoxysilane (APTES, 99%), hydrocholoric acid (37%),
and poly(dimethylsiloxane) monoglycidyl ether terminated (PDMS-G, M_w = 1000 g mol^–1) were purchased
from Sigma-Aldrich (St. Louis, MO). Calcium chloride (CaCl₂) was purchased from Aldrich Chemical Co. Ltd. (Gillingham, England).
PMMA was a gift from Arkema (VM100, i.e., a PMMA-co-EA polymer) (La Garenne-Colombes, France). Absolute tetrahydrofuran
(THF) were purchased from Biosolve (Valkenswaard, The Netherlands).
Ethanol absolute for analysis was purchased from Merck (Darmstadt,
Germany). Milli-Q water was produced by a Millipore Synergy system
(Billerica, MA). Nanoparticles with diameters of ∼12 nm (B220),
∼20 nm (B130), and ∼60 nm (Levasil 50/50) were purchased
from AkzoNobel (Bohus, Sweden). These particles were dispersed in
aqueous solution and have surface exposed hydroxyl groups on the surface
as received. Unless otherwise mentioned, all other chemicals were
used as received.

Liu S., Pandey A., Duvigneau J., Vancso J, & Snoeijer J.H. (2018). Size-Dependent Submerging of Nanoparticles in Polymer Melts: Effect of Line Tension. Macromolecules, 51(7), 2411-2417.

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Epoxy-Silanized Silica Ionomer Filler

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Example 17

Example 17 was prepared with the following amounts. Levasil 50/50 from Akzo Nobel was first epoxy silanized according to the procedure described in U.S. Pat. No. 6,899,948 B2 (Zhang et al.), section “Filler C Nano-sized Silica.” The silane was 3-Glycidyloxypropyl trimethoxysilane. An amount of 15.2% epoxy silanized Levasil 50/50 (containing 50% water and 50% silanized particles) was added to an amount of 83.1% Ketac Fil Plus ionomer glass powder (KETAC Fil Plus Glass Ionomer Filling Material, available from 3M Company, Seefeld Germany), 1.6% OX-50 fumed silica and 0.1% benzoic acid.

All cited references, patents, or patent applications in the above application for letters patent are herein incorporated by reference in their entirety in a consistent manner. In the event of inconsistencies or contradictions between portions of the incorporated references and this application, the information in the preceding description shall control. The preceding description, given in order to enable one of ordinary skill in the art to practice the claimed disclosure, is not to be construed as limiting the scope of the disclosure, which is defined by the claims and all equivalents thereto.

US11304880B2. Glass ionomer compositions and methods including water-miscible, silane-treated, nano-sized silica particles (2022-04-19). 3M INNOVATIVE PROPERTIES COMPANY [US]. Inventors: Mark B. Agre [US], Bradley D. Craig [US], Michael Jahns [DE], Adrian S. Eckert [DE].

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Silica-based Polymer Nanocomposite Synthesis

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Tetraethyl
orthosilicate (TEOS) ≥
99.0% and 2-propanol 99.5% were purchased from Aldrich (Milwaukee,
WI). (3-Aminopropyl)-triethoxysilane (APTES) 99%, hydrochloric acid
37%, and ammonium hydroxide solution 28–30% were purchased
from Sigma-Aldrich (St. Louis, MO). Monoglycidyl ether-terminated
poly(dimethylsiloxane) (PDMS-G) (M_w =
1000 and 5000 g mol^–1) was purchased from Gelest
(Morrisville, PA). N-(2-aminoethyl-3-aminopropyl)methyldimethoxysilane
(Dynasylan 1411) ≥ 99.0% was obtained from Evonik (Marl, Germany).
PMMA granules were acquired from Arkema (VM100, i.e., a PMMA-co-EA polymer, ρ = 1.18 g cm^–3)
(La Garenne-Colombes, France). Nanoparticles with diameters of 12
nm (Bindzil 40/220), 20 nm (Bindzil 40/130), and 60 nm (Levasil 50/50)
were a gift from AkzoNobel (Bohus, Sweden). These particles were dispersed
in aqueous solution and have surface-exposed silanol groups on the
surface as received. Absolute tetrahydrofuran (THF) was purchased
from Biosolve (Valkenswaard, The Netherlands). Ethanol absolute for
analysis was obtained from Merck (Darmstadt, Germany). Milli-Q water
was produced by a Millipore Synergy system (Billerica, MA). Unless
otherwise mentioned, all other chemicals were used as received.

Liu S., Eijkelenkamp R., Duvigneau J, & Vancso G.J. (2017). Silica-Assisted Nucleation of Polymer Foam Cells with Nanoscopic Dimensions: Impact of Particle Size, Line Tension, and Surface Functionality. ACS Applied Materials & Interfaces, 9(43), 37929-37940.

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