| Dynasylan® 40 | Evonik Operations GmbH, BL Silanes | Dynasylan® 40 is a ethyl silicate with a silicon dioxide content of approximately 40 - 42 % upon complete hydrolysis (the Si content of Dynasylan® 40 is calculated as SiO2). Dynasylan® 40 is formed in the presence of water from tetraethyl silicate (Si[OEt...voir plus Dynasylan® 40 is a ethyl silicate with a silicon dioxide content of approximately 40 - 42 % upon complete hydrolysis (the Si content of Dynasylan® 40 is calculated as SiO2). Dynasylan® 40 is formed in the presence of water from tetraethyl silicate (Si[OEt]4) by partial hydrolysis of the ethoxy groups to hydroxyl groups and subsequent condensation with formation of siloxane bonds (-Si-O-Si-). Dynasylan® 40 is a colorless, low-viscosity liquid with an SiO2 content of 40% (the Si content of Dynasylan® 40 is calculated as SiO2). The polysilicic acids still have a sufficient content of ethoxy groups which can be activated by acid- or base-catalyzed hydrolysis. Condensation starts even during hydrolysis, with the formation of relatively large polymeric molecules. During storage of these hydrolysates, condensation continues until a gel is formed, where the rate depends on the degree of hydrolysis. The action of the hydrolysates as binders is based on the continuation of the hydrolysis with subsequent gelation and dehydration to give polymeric SiO2 structures. voir moins | |
| Dynasylan® A | Evonik Operations GmbH, BL Silanes | Dynasylan® A is the ethyl ester of orthosilicic acid. In the literature it is frequently also referred to under the name TEOS (tetraethoxysilane). Dynasylan® A is a colourless, low-viscosity liquid with SiO2 content of 28.5%. Use requires acid- or alkali-...voir plus Dynasylan® A is the ethyl ester of orthosilicic acid. In the literature it is frequently also referred to under the name TEOS (tetraethoxysilane). Dynasylan® A is a colourless, low-viscosity liquid with SiO2 content of 28.5%. Use requires acid- or alkali-catalysed hydrolysis. Since all 4 ethoxy groups are able to participate in this reaction, Dynasylan® A is regarded as tetrafunctional. Hydrolysis leads to silanol groups which, in a subsequent condensation reaction, form very stable siloxane bonds (-Si-O-Si-). Condensation starts before hydrolysis is complete. During storage of these hydrolysates condensation, continues until a gel is formed. The rate of gelation depends on the concentration of water. voir moins | |
| Dynasylan® MEMO | Evonik Operations GmbH, BL Silanes | Dynasylan® MEMO is a methacrylfunctional silane that can be used as adhesion promoter, surface modifier, co-monomer for polymer synthesis and crosslinker. Dynasylan® MEMO is a clear, colorless liquid. It is soluble in alcohols, and aliphatic or aromatic h...voir plus Dynasylan® MEMO is a methacrylfunctional silane that can be used as adhesion promoter, surface modifier, co-monomer for polymer synthesis and crosslinker. Dynasylan® MEMO is a clear, colorless liquid. It is soluble in alcohols, and aliphatic or aromatic hydrocarbons. voir moins | |
| MM-204 | Designer Molecules | MM-204 is a light tan liquid mono-functional acrylate monomer. This product features low viscosity, hydrolytically resistant, high glass transition temperature, diluent for thermoset resins, low cure shrinkage, and high Tg. MM-204 is most commonly used as...voir plus MM-204 is a light tan liquid mono-functional acrylate monomer. This product features low viscosity, hydrolytically resistant, high glass transition temperature, diluent for thermoset resins, low cure shrinkage, and high Tg. MM-204 is most commonly used as a reactive diluent for UV or peroxide cured resins in coating or adhesive applications. voir moins | |
| MM-211 | Designer Molecules | MM-211 is a light yellow powder terminated carboxylic acid. This product features flexible aliphatic backbone, maleimide and carboxylic acid functional groups, and adhesion promoter. MM-211 is most commonly used in synthetic resins and adhesion promoting ...voir plus MM-211 is a light yellow powder terminated carboxylic acid. This product features flexible aliphatic backbone, maleimide and carboxylic acid functional groups, and adhesion promoter. MM-211 is most commonly used in synthetic resins and adhesion promoting applications. voir moins | |
| MM-220 | Designer Molecules | MM-220 is a light yellow liquid mono-acrylate monomer. This product features low weight loss on cure, helps reduce cure shrinkage, and low viscosity. MM-220 is most commonly used as a reactive diluent for UV or peroxide cured resins, coatings and adhesive...voir plus MM-220 is a light yellow liquid mono-acrylate monomer. This product features low weight loss on cure, helps reduce cure shrinkage, and low viscosity. MM-220 is most commonly used as a reactive diluent for UV or peroxide cured resins, coatings and adhesive applications. voir moins | |
| MM-281 | Designer Molecules | MM-281 is a white to off white solid carboxylic acid. It is a useful intermediate for the synthesis of ester and amide linked thermoset monomers. This product features flexible aliphatic backbone, maleimide and carboxylic acid functional groups, and adhes...voir plus MM-281 is a white to off white solid carboxylic acid. It is a useful intermediate for the synthesis of ester and amide linked thermoset monomers. This product features flexible aliphatic backbone, maleimide and carboxylic acid functional groups, and adhesion promoter. MM-281 is most commonly used in resins and adhesion promoter applications. voir moins | |
| MM-290 | Designer Molecules | MM-290 is a light tan liquid acrylate monomer. This product features lower weight loss on cure than Isobornyl Acrylate (IBOA), mild pleasant odor, and hydrolytic resistance. MM-290 is a most commonly used in hydrolytic resistance applications. | |
| MM-304 | Designer Molecules | MM-304 is a colorless liquid methacrylate monomer. This product features lower weight loss on cure than Isobornyl methacrylate (IBOMA), mild pleasant odor, hydrolytic resistance, and very low color. MM-304 is most commonly used in hydrolytic resistance ap...voir plus MM-304 is a colorless liquid methacrylate monomer. This product features lower weight loss on cure than Isobornyl methacrylate (IBOMA), mild pleasant odor, hydrolytic resistance, and very low color. MM-304 is most commonly used in hydrolytic resistance applications. voir moins |
