Silanos

<p>DMS-S45 - Silanol terminated polydimethylsiloxanes cSt 50,000</p>

<p>DMS-A12 - Aminoproplyterminated polydimethylsiloxane cSt 20-30</p>

<p>MCS-C13 - MonoCarbinol terminated functional Polydimethylsiloxane - symmetric cSt 35-40</p>

<p>Aromatic Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Phenethyltrimethoxysilane; Phenylethyltrimethoxysilane; Trimethoxy(2-phenylethyl)silane<br>Contains α-, β-isomersComponent in optical coating resinsIn combination with TEOS,SIT7110.0, forms hybrid silicalite-1 molecular sieves<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>1,5-Dichlorohexamethyltrisiloxane; Hexamethyldichlorotrisiloxane; 1,5-Dichloro-1,1,3,3,5,5-hexamethyltrisiloxane<br>ΔHvap: 47.7 kJ/molVapor pressure, 50 °C: 1 mm<br></p>

<p>Aromatic Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Arylsilane Cross-Coupling Agent<br>The cross-coupling reaction is a highly useful methodology for the formation of carbon-carbon bonds. It involves two reagents, with one typically being a suitable organometallic reagent - the nucleophile - and the other a suitable organic substrate, normally an unsaturated halide, tosylate or similar - the electrophile.<br>Phenylmethyldichlorosilane; Methylphenyldichlorosilane; Dichloromethylphenylsilane<br>Viscosity, 20 °C: 1.2 cStΔHvap: 48.1 kJ/molVapor pressure, 82.5 °C: 13 mmMonomer for high temperature siliconesReacts well under the influence of NaOH versus fluoride activation w/ aryl chlorides, bromides, and iodides<br></p>

<p>(N-Cyclohexylaminomethyl)triethoxysilane; [(triethoxysilyl)methyl]aminocyclohexane<br>Secondary amino functional trialkoxy silaneInternal secondary amine coupling agent for UV cure and epoxy systemsUsed in microparticle surface modification<br></p>

<p>Olefin Functional Trialkoxy Silane<br>Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.<br>9-Trimethoxysilyl-3,3,4,4,5,5,6,6,7,7,8,8-dodecafluorodecene; Dodecafluorodec-9-ene-1-yltrimethoxysilane<br>Forms self-assembled monolayers; reagent for immobilization of DNAUsed in microparticle surface modificationHalogenated alkyl hydrophobic linkerSimilar to discontinued product, SIH5919.0<br></p>

<p>Diamine Functional Polymeric Silane<br>Silane coupling agents have the ability to form a durable bond between organic and inorganic materials to generate desired heterogeneous environments or to incorporate the bulk properties of different phases into a uniform composite structure. The general formula has two classes of functionality. The hydrolyzable group forms stable condensation products with siliceous surfaces and other oxides such as those of aluminum, zirconium, tin, titanium, and nickel. The organofunctional group alters the wetting or adhesion characteristics of the substrate, utilizes the substrate to catalyze chemical transformations at the heterogeneous interface, orders the interfacial region, or modifies its partition characteristics, and significantly effects the covalent bond between organic and inorganic materials.<br>N-(2-Aminoethyl)-3-aminopropyltrimethoxsilane-propyltrimethoxysilane,N-[3-(trimethoxysilyl)propyl]ethylenediamine-(trimethoxysilyl)propane, oligomeric co-hydrolysate<br>Cohydrolysate of SIA0591.1 and SIP6918.0<br></p>

<p>Aromatic Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>Phenylmethyldimethoxysilane; Methylphenyldimethoxysilane; Dimethoxymethylphenylsilane<br>Viscosity, 20 °C: 1.65 cStAdditive to coupling agent systems, increasing interface flexibility, UV stabilityDialkoxy silane<br></p>

<p>Tri-substituted Silane Reducing Agent<br>Organosilanes are hydrocarbon-like and possess the ability to serve as both ionic and free-radical reducing agents. These reagents and their reaction by-products are safer and more easily handled and disposed than many other reducing agents. The metallic nature of silicon and its low electronegativity relative to hydrogen lead to polarization of the Si-H bond yielding a hydridic hydrogen and a milder reducing agent compared to aluminum-, boron-, and other metal-based hydrides. A summary of some key silane reductions are presented in Table 1 of the Silicon-Based Reducing Agents brochure.<br>Triethylsilane; Triethylsilyl hydride; Triethylsilicon hydride<br>Viscosity: 4.9 cStDipole moment: 0.75 debyeSurface tension: 20.7 mN/mΔHform: -172 kJ/molΔHcomb: -5,324 kJ/molVapor pressure, 20 °: 40 mmSilylates tertiary alcohols in presence of tris(pentafluorophenyl)boraneSilylates arenes in presence of Ru catalyst and t-butylethyleneUsed in reductive cyclization of ynalsReadily converted directly to triethylsilyl carboxylatesUsed to reduce metal saltsEnhances deprotection of t-butoxycarbonyl-protected amines and tert-butyl estersUsed in the reductive amidation of oxazolidinones with amino acids to provide dipeptidesConverts aldehydes to symmetrical and unsymmetrical ethersUsed in the ‘in-situ’ preparation of diborane and haloboranesExtensive review of silicon based reducing agents: Larson, G.; Fry, J. L. "Ionic and Organometallic-Catalyzed Organosilane Reductions", Wipf, P., Ed.; Wiley, 2007<br></p>

<p>(3-Glycidoxypropyl)dimethylethoxysilane; 3-(2,3-epoxypropoxypropyl)dimethylethoxysilane<br>Epoxy functional monoalkoxy silaneUsed in microparticle surface modificationCoupling agent for UV cure and epoxy systemsEpoxy silane treated surfaces convert to hydrophilic-diols when exposed to moisture<br></p>

<p>Siloxane-Based Silane Reducing Agent<br>Organosilanes are hydrocarbon-like and possess the ability to serve as both ionic and free-radical reducing agents. These reagents and their reaction by-products are safer and more easily handled and disposed than many other reducing agents. The metallic nature of silicon and its low electronegativity relative to hydrogen lead to polarization of the Si-H bond yielding a hydridic hydrogen and a milder reducing agent compared to aluminum-, boron-, and other metal-based hydrides. A summary of some key silane reductions are presented in Table 1 of the Silicon-Based Reducing Agents brochure.<br>1,3,5,7,9-Pentamethylcyclopentasiloxane; D'5; Methyl hydrogen cyclic pentamer; 2,4,6,8,10-Pentamethylcyclopentasiloxane<br>ΔHvap: 47.3 kJ/molContains other cyclic homologsExtensive review of silicon based reducing agents: Larson, G.; Fry, J. L. "Ionic and Organometallic-Catalyzed Organosilane Reductions", Wipf, P., Ed.; Wiley, 2007<br></p>

<p>Alkyl Silane - Conventional Surface Bonding<br>Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete. A selection guide for hydrophobic silanes can be found on pages 22-31 of the Hydrophobicity, Hydrophilicity and Silane Surface Modification brochure.<br>n-Octadecyldimethylchlorosilane; Dimethyl-n-octadecylchlorosilane; Chlorodimethyloctadecylsilane; Chlorodimethylsilyl-n-octadecane<br>Contains 5-10% C18 isomers70% in toluene<br></p>

<p>3-Isocyanotopropyltrimethoxysilane; trimethoxysilylpropylisocyanate<br>Isocyanate functional trialkoxy silaneViscosity: 1.4 cStCoupling agent for urethanes, polyols, and aminesComponent in hybrid organic/inorganic urethanes<br></p>