6231-68-1

Usage

Uses

Used in Silicone Polymer and Resin Manufacturing:
1,2-BIS(PENTAMETHYLDISILOXANYL)ETHANE is used as a crosslinking agent and modifier to enhance the properties of silicone polymers and resins, improving their stability, durability, and performance in various applications.
Used as a Lubricant:
1,2-BIS(PENTAMETHYLDISILOXANYL)ETHANE is used as a lubricant in various industries due to its low friction coefficient and ability to reduce wear and tear on machinery components.
Used as a Release Agent:
In manufacturing processes, 1,2-BIS(PENTAMETHYLDISILOXANYL)ETHANE is used as a release agent to prevent adhesion between materials, making it easier to separate them and improving production efficiency.
Used as an Anti-Foaming Agent:
1,2-BIS(PENTAMETHYLDISILOXANYL)ETHANE is utilized as an anti-foaming agent in various industrial processes to control and prevent the formation of foam, ensuring smooth and efficient operation.
Used in Chemical and Material Production:
As a key intermediate, 1,2-BIS(PENTAMETHYLDISILOXANYL)ETHANE plays a crucial role in the synthesis of silicone-based chemicals and materials, contributing to the development of innovative products with diverse applications.

Upstream product

• 1438-82-0 1,1,1,3,3-pentamethyl-1,3-disiloxane 
• 1438-79-5 1,1,3,3,3-pentamethyl-1-vinyldisiloxane 
• 74-86-2 acetylene 
• 75-77-4 chloro-trimethyl-silane 
• 107-46-0 Hexamethyldisiloxane 
• 76490-69-2 bis(dimethylmethoxysilyl)ethane 
• 13528-93-3 1,2-bis-(chlorodimethylsilyl)ethane 

Relevant academic research and scientific papers

HYDROSILYLATION IRON CATALYST

A hydrosilylation iron catalyst prepared from a two-electron ligand (L) and a mononuclear, binuclear, or trinuclear complex of iron indicated by formula (1), Fe having bonds with carbon atoms included in X and the total number of Fe-carbon bonds being 2-10. As a result of using iron, the hydrosilylation iron catalyst is advantageous from a cost perspective as well as being easily synthesized. Hydrosilylation reactions can be promoted under mild conditions by using this catalyst. [in-line-formulae]Fe(X)a??(1)[/in-line-formulae] (in the formula, each X independently indicates a C2-30 ligand that may include an unsaturated group excluding carbonyl groups (CO groups) and cyclopentadienyl groups, however at least one X includes an unsaturated group, a indicates an integer of 2-4 per Fe atom.)

(Aminomethyl)pyridine Complexes for the Cobalt-Catalyzed Anti-Markovnikov Hydrosilylation of Alkoxy- or Siloxy(vinyl)silanes with Alkoxy- or Siloxyhydrosilanes

Cobalt-catalyzed anti-Markovnikov reactions that involve siloxy- or alkoxy(vinyl)silanes and siloxy- or alkoxyhydrosilanes are disclosed. More than 25 new cobalt–(aminomethyl)pyridine complexes were developed as catalysts for the hydrosilylation of indust

Non-Precious-Metal Catalytic Systems Involving Iron or Cobalt Carboxylates and Alkyl Isocyanides for Hydrosilylation of Alkenes with Hydrosiloxanes

A mixture of an iron or a cobalt carboxylate and an isocyanide ligand catalyzed the hydrosilylation of alkenes with hydrosiloxanes with high efficiency (TON >103) and high selectivity. The Fe catalyst showed excellent activity for hydrosilylation of styrene derivatives, whereas the Co catalyst was widely effective in reaction of alkenes. Both of them catalyzed the reaction with allylic ethers. Chemical modification and cross-linking of silicones were achieved by choosing the right catalyst and reaction conditions.

Method for producing polyimidesiloxane

PROBLEM TO BE SOLVED: To provide a method for synthesizing siloxanes at will in good yield while maintaining high structural controllability, which can be applied to substrates having various substituents.SOLUTION: The method comprises reacting benzyloxysilanes and silicon halides in the absence of hydrogen using a catalyst comprising a transition metal or a compound thereof, preferably a metal of group 9 or group 10 of the periodic table or a compound thereof. Thereby, corresponding siloxanes can be produced safely and simply in high yield under a mild reaction condition accompanied by elimination of a benzyl halide. Especially, by using an active carbon-supported catalyst as a heterogeneous catalyst, the target siloxanes can be separated easily.

LINEAR AND CYCLIC SILOXANES AND COSMETIC COMPOSITIONS MADE THEREOF

The present invention relates to a novel organopolysiloxane having a specified structure and a cosmetic containing the aforementioned organopolysiloxane. The novel organopolysiloxane according to the present invention is volatile, possesses stability at low temperature, provides superior glossiness, and has a superior property with respect to miscibility with a UV- ray absorber, and which is useful as a replacement of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, or methyltrimethicone. The cosmetic according to the present invention can provide superior feeling to the touch during use and a superior outer appearance. Furthermore, a degree of freedom in blending various components such as UV-ray absorbers into the cosmetic according to the present invention is increased.

Siloxane-supported organometallic compounds and their catalytic activities for the hydrosilylation of vinylsilanes and dienes

Two different classes of silicone-modified ligands were prepared: nitrile derivatives, 4′-[3-(organosilyl)propoxy]-biphenyl-4-carbonitrile R′3SiC3H6OC6H 4C6H4CN 2 (R′3Si- = a: Me 3SiOSiMe2-, b: (Me3SiO)2SiMe-, c: Me3SiO(Me2SiO)3SiMe2-, d: Me 3SiO(Me2SiO)25SiMe2-); and, pyridine derivatives, isonicotinic acid 2-methoxy-4-[3-(organosilyl)propyl]phenyl ester R′3SiC 3H6Ph(OMe)OC(O)C5H4N 6. Compounds 2 and 6 were bound to Pd and Pt using ligand substitution reactions with organometallic precursors to give (R3SiC3H 6OC6H4C6H4CN) 2PdCl2 3, (R3SiC3H 6OC6H4C6H4CN) 2PtCl2 4 and (R3SiC3H 6C6H3(OMe)OC(O)C5H 4N)PtCl2(η2-1-octene) 8. The polydimethylsiloxane (PDMS)-supported Pt and Pd compounds 3d and 4d had excellent solubility in both organic solvents and polysiloxanes. All the Pt compounds exhibited good catalytic activity for hydrosilylation of vinylsilanes. The PDMS-supported Pd compound 3d also was effective catalyst for hydrosilylation of a diene, isoprene, with 1,1,1,3,3-pentamethyldisiloxane MMH to produce the 1,4-adduct Me3SiOSiMe 2CH2CH=CMeCH2-H as a major product.

Kinetic Investigation of the Platinum-catalysed Hydrosilylation of Vinylsiloxanes with Hydrogensiloxanes

A kinetic investigation of the platinum-catalysed hydrosilylation of monofunctional oligomeric vinylsiloxanes by monofunctional oligomeric hydrogensiloxanes was performed under stoichiometric conditions with use of quantitative 1H-NMR spectrometry.The reaction rate up to 50percent conversion can be expressed by v=k .During further hydrosilylation the kinetic changed to second order.No induction period was observed.A hydrogensiloxane with a dimethylsilyl end group gives much higher rates than a siloxane with a methylsiloxy group.The main reactions of all hydrosilylations, determined by GC-MS and 29Si-NMR, are β-additions.Less then 5percent α-products are obtained.