| 63% DVB Monomer | Deltech Corporation | 63% DVB Monomer is a reactive monomer composed of divinylbenzene (62-65%) and ethylvinylbenzene (34-37%) isomers. Primary applications have been in synthesis of ion-exchange resins and the production of unsaturated polyester resins and casting resins wher...voir plus 63% DVB Monomer is a reactive monomer composed of divinylbenzene (62-65%) and ethylvinylbenzene (34-37%) isomers. Primary applications have been in synthesis of ion-exchange resins and the production of unsaturated polyester resins and casting resins where DVB is used as a cross-linking agent to provide rigidity. Other applications include use in coatings, adhesives, films, insulting varnishes, and unsaturated polyesters. voir moins | |
| 80% DVB Monomer | Deltech Corporation | 80% DVB Monomer is a reactive monomer composed primarily of divinylbenzene (80-83%) and ethylvinylbenzene (16-20%) isomers. Primary applications have been in synthesis of ion-exchange resins and production of unsaturated polyester resins and casting resin...voir plus 80% DVB Monomer is a reactive monomer composed primarily of divinylbenzene (80-83%) and ethylvinylbenzene (16-20%) isomers. Primary applications have been in synthesis of ion-exchange resins and production of unsaturated polyester resins and casting resins where DVB is used as a cross-linking agent to provide rigidity. Other applications include use in coatings, adhesives, films, and insulting varnishes. voir moins | |
| 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 | |
| VT Monomer | Deltech Corporation | VT Monomer (Vinyl Toluene) is a reactive monomer which readily polymerizes to form a high clarity, colorless polymer with excellent electrical and physical properties. VT Monomer is a mixture of methylstyrene isomers with approximately 55% meta and 45% pa...voir plus VT Monomer (Vinyl Toluene) is a reactive monomer which readily polymerizes to form a high clarity, colorless polymer with excellent electrical and physical properties. VT Monomer is a mixture of methylstyrene isomers with approximately 55% meta and 45% para isomer distribution. The monomer has chemical properties and polymerization behavior similar to styrene monomer. Applications include use in coatings, adhesives, films, insulating varnishes, unsaturated polyesters, and ion exchange resins. voir moins |
