1438-79-5

Usage

Uses

Used in Silicone Polymers and Resins:
VINYLPENTAMETHYLDISILOXANE is used as a building block for the synthesis of silicone polymers and resins, due to its capacity to crosslink and create strong, flexible bonds.
Used in Coatings, Adhesives, and Sealants:
VINYLPENTAMETHYLDISILOXANE is utilized in the production of various coatings, adhesives, and sealants, where its bonding and stability properties are advantageous.
Used in Personal Care Products:
VINYLPENTAMETHYLDISILOXANE is also found in the formulation of personal care products, such as skincare and haircare items, where its properties can enhance the performance and quality of these products.
Used in Various Industries:
Due to its diverse properties, VINYLPENTAMETHYLDISILOXANE is employed across a wide range of industries, including but not limited to, the manufacturing of consumer goods, industrial applications, and the development of high-performance materials.

InChI:InChI=1/C7H18OSi2/c1-7-10(5,6)8-9(2,3)4/h7H,1H2,2-6H3

Upstream product

• 75-77-4 chloro-trimethyl-silane 
• 1719-58-0 Chlorodimethylvinylsilane 
• 857899-86-6 (1-hydrohexafluoroisobutenyloxy)trimethylsilane 

Downstream Products

• 6231-68-1 1,2-bis(1,1-3,3,3-pentamethyldisiloxanyl)ethane 
• 1092386-92-9 (E)-[1-(4-bromophenyl)-2-(1,1,3,3,3-pentamethyldisiloxy)]ethene 
• 18407-16-4 1,1,1,3,3,5,5-heptamethyl-5-phenyl-trisiloxane 

Relevant academic research and scientific papers

PROCESSES FOR SYNTHESIZING UNSYMMETRICAL DISILOXANES

Described herein are methods for making alkenyl disiloxanes, comprising combining an alkenyl halosilane with an alkyl halosilane and adding the mixture to water, an acidic aqueous solution, or a basic aqueous solution. The ratio of the alkenyl halosilane to the alkyl halosilane is about 10:1 to about 1:10. The alkenyl halosilane and the alkyl halosilane are mixed at about 20 °C to about 45 °C. The reaction product is separated and washed with saturated alkali carbonate solution.

Preparation method of 1-vinyl-1,1,3,3,3-pentamethyldisiloxane

The invention relates to a preparation method of 1-vinyl-1,1,3,3,3-pentamethyldisiloxane, prepared by: using 1,3-divinyl-1,1,3,3,-tetramethyldisiloxane ad 1,1,1,3,3,3-hexamethyldisiloxane as materials, carrying out rearrangement reaction under the catalytic action of a complexing catalyst KOH/18-crown ether-6; neutralizing the catalyst, filtering, and distilling filtrate. The macromolecular ring compound 18-crown ether-6 and KOH form the complexing agent; the compound reaction helps improve catalyst activity and efficiently catalyzes for rearrangement reaction. The macromolecular ring compound18-crown ether-6 and KOH form a complexing catalyst; complexing reaction is performed to obtain improved catalyst activity, and rearranging reaction is efficiently catalyzed. In addition, the preparation method is simple, the reacting is fast and stable, and the preparation method has the advantages of high yield, good safety, good environmental friendliness and the like.

Reaction of 1-hydrohexafluoroisobutenyloxytrimethylsilane with fluoride ion sources. 2,2,2′,2′-Tetrakis(trifluoromethyl)divinyl ether

The reaction of 1-hydrohexafluoroisobutenyloxytrimethylsilane (2a) with cesium fluoride in diglyme leads to elimination of trimethylfluorosilane to form the 1-hydrohexafluoroisobutenolate anion (3), which is silylated with trialkylchlorosilanes at the oxygen atom. In the presence of bis(trifluoromethyl)ketene N,N,O-trimethylaminoacetal or N-(α,α- difluoroalkyl)-dialkylamines, silane 2a is transformed into 2,2,2′, 2′-tetrakis(trifluoromethyl)divinyl ether. The reaction of trifluoroacetic anhydride with N-(1,1,2,2-tetrafluoroethyl)diethylamine affords trifluoroacetyl fluoride in quantitative yield.