7422-52-8

Usage

Uses

Used in Adhesives Industry:
GLYMO is used as a surface modifier and adhesion promoter for enhancing the bonding strength between organic adhesives and inorganic substrates. Its ability to form strong chemical bonds with both types of materials results in improved durability and performance of the final adhesive product.
Used in Sealants Industry:
In the sealants industry, GLYMO is utilized as a coupling agent to improve the adhesion of sealants to various surfaces, ensuring a long-lasting and robust seal. Its reactivity with different substrates contributes to the creation of a more stable and durable sealant.
Used in Coatings Industry:
GLYMO is employed as a coupling agent in the coatings industry to enhance the adhesion of coatings to both organic and inorganic surfaces. This leads to improved durability, resistance to wear, and overall performance of the coating, providing a longer-lasting protective layer.
Used in Plastics Industry:
In the plastics industry, GLYMO serves as a coupling agent to improve the interaction between plastic materials and other substrates, leading to enhanced mechanical properties and adhesion. Its use can result in plastics with better overall performance and durability.
Used in Polymerization Processes:
GLYMO can also act as a crosslinking agent in polymerization processes, contributing to the formation of a three-dimensional network within the polymer matrix. This crosslinking enhances the mechanical properties of the polymer, such as tensile strength, elasticity, and resistance to deformation.

InChI:InChI=1/C13H32O4Si3/c1-18(2,3)16-20(7,17-19(4,5)6)10-8-9-14-11-13-12-15-13/h13H,8-12H2,1-7H3

Upstream product

• 106-92-3 Allyl glycidyl ether 
• 1873-88-7 1,1,1,3,5,5,5-heptamethyltrisiloxan 
• 124-38-9 carbon dioxide 

Downstream Products

• 69861-02-5 (3-methacryloxy-2-hydroxypropoxy)propyl-bis(trimethylsiloxy)methylsilane 
• 318473-48-2 (2-methacryloxy-3-hydroxypropyloxy)propylbis(trimethylsiloxy)methylsilane 
• 70280-68-1 C₁₃H₃₄O₅Si₃ 

Relevant academic research and scientific papers

Investigation on modified polyether as an efficient CO2thickener

The development of a new generation of carbon dioxide (CO2) thickeners is significant for improving carbon dioxide flooding technology. Here, co-polymers based on epoxide heptamethyltrisiloxane and glycidyl phenyl ether are prepared, and their solubility and thickening ability in CO2 are evaluated. The solubility of the modified polyethers in CO2 remarkably increases with the modification of heptamethyltrisiloxane and decreases upon introducing phenyl glycidyl ether. With incorporation of 18.4 mol% phenyl groups into the co-polymer, the co-polymer exhibits a highly increased thickening effect, while maintaining high solubility in CO2. Implications of the present study for the preparation of a highly efficient CO2 thickener are discussed.

Multifunctional Catalytic Surface Design for Concerted Acceleration of One-Pot Hydrosilylation-CO2 Cycloaddition

Silica-supported Rh-ammonium iodide catalyst showed high performance for hydrosilylation-CO2 cycloaddition reaction sequences. The catalyst was prepared by surface grafting of Rh and the silane-coupling reaction of the ammonium iodide moiety. The acceleration of each catalytic reaction was realized due to the concerted catalysis between Rh species, immobilized organic functions, and surface Si-OH groups. As a result, good to excellent yields of silyl carbonates were obtained from epoxyolefins, hydrosilanes, and CO2 under mild reaction conditions.

Modification of (poly)siloxanes via hydrosilylation catalyzed by rhodium complex in ionic liquids

The hydrosilylation of 1-heptene, allyl glycidyl ether and, allyl polyether by heptamethylhydrotrisiloxane and poly(hydro, methyl)(dimethyl)siloxane catalyzed by rhodium(I) complexes (particularly [{Rh(μ-OSiMe 3)(cod)}2]) in imidazolium ionic liquids (especially [TriMIM]MeSO4) gives heptyl and glycidyloxy functional (poly)siloxanes and silicone polyethers with high yield and selectivity. The catalytic system based on rhodium siloxide can be easily separated from the product and successfully reused up to five times. Springer-Verlag 2006.

A family of rhodium(i) NHC chelates featuring O-containing tethers for catalytic tandem alkene isomerization-hydrosilylation

The rhodium complex Rh(HL)(COD)Cl, 1, L being a functionalized N-heterocyclic carbene (NHC) ligand with an oxygen-containing pendant arm, has been used as the entry point to synthesize a series of neutral and cationic Rh(i) O,C chelates. While the Rh-carbene interaction is similar in all these 16-electron complexes, structural analysis reveals that the strength of the Rh-O bond is greatly affected by the nature of the O-donor: R-O- > R-OH > R-OBF3. These subtle changes in the nature of the O-containing tether are found to be responsible for large differences in the alkene hydrosilylation catalytic activity of these compounds: the stronger the Rh-O interaction, the better the catalytic performances. The most active catalyst, [Rh(L)(COD)], 2, demonstrated good catalytic activity under mild reaction conditions for the hydrosilylation of a range of alkene substrates with the industrially relevant non-activated tertiary silane, 1,1,1,3,5,5,5-heptamethyltrisiloxane (MDHM). Furthermore, this complex is an effective catalyst for the selective remote functionalization of internal olefins at room temperature via tandem alkene isomerization-hydrosilylation.

Accelerated Anti-Markovnikov Alkene Hydrosilylation with Humic-Acid-Supported Electron-Deficient Platinum Single Atoms

The hydrosilylation reaction is one of the largest-scale applications of homogeneous catalysis, and Pt homogeneous catalysts have been widely used in this reaction for the commercial manufacture of silicon products. However, homogeneous Pt catalysts result in considerable problems, such as undesired side reactions, unacceptable catalyst residues and disposable platinum consumption. Here, we synthesized electron-deficient Pt single atoms supported on humic matter (Pt1@AHA_U_400), and the catalyst was used in hydrosilylation reactions, which showed super activity (turnover frequency as high as 3.0×107 h?1) and selectivity (>99 %). Density functional theory calculations reveal that the high performance of the catalyst results from the atomic dispersion of Pt and the electron deficiency of the Pt1 atoms, which is different from conventional Pt nanoscale catalysts. Excellent performance is maintained during recycle experiments, indicating the high stability of the catalyst.

Leach-resistant Pt nanoparticles on a silica support serving as a clean, efficient, and recyclable catalyst for solvent-free hydrosilylation

Pt nanoparticles of sub-3 nm diameter immobilized within a crosslinked polysiloxane network covalently attached to a silica support have been shown to be highly efficient recyclable leach-resistant catalysts for olefin hydrosilylation, especially by hydrosiloxanes. Efficient entrapment of Pt nanoparticles on the silica surface was established unambiguously by 29Si NMR, SEM, EDS, HRTEM and leaching studies. The present catalyst offers several advantages over conventional homogeneous and heterogeneous catalysts such as easy handling, high activity, user friendly recycling, and tolerance to a variety of functional groups which makes this catalyst a valuable alternative for industrial manufacturing of high purity organosilicones. This journal is

Developing a Highly Active Catalytic System Based on Cobalt Nanoparticles for Terminal and Internal Alkene Hydrosilylation

This work describes the development of easy-To-prepare cobalt nanoparticles (NPs) in solution as promising alternative catalysts for alkene hydrosilylation with the industrially relevant tertiary silane 1,1,1,3,5,5,5-heptamethyltrisiloxane (MDHM). The Co NPs demonstrated high activity when used at 30 °C for 3.5-7 h in toluene, with catalyst loadings 0.05-0.2 mol %, without additives. Under these mild conditions, a set of terminal alkenes were found to react with MDHM, yielding exclusively the anti-Markovnikov product in up to 99% yields. Additionally, we demonstrated the possibility of using UV irradiation to further activate these cobalt NPs not only to enhance their catalytic performances but also to promote tandem isomerization-hydrosilylation reactions using internal alkenes, among them unsaturated fatty ester (methyl oleate), to produce linear products in up to quantitative yields.

Highly efficient hydrosilylation catalysts based on chloroplatinate “ionic liquids”

The reaction between ionic liquid [Cat]+Cl? (where Cat stands for 1-butyl-3-methylimidazolium, 1-butyl-2,3-dimethylimidazolium or 1-butyl-4-methylpyridinium)and the metal precursor ([PtCl2(cod)], PtCl4, K2[PtCl4]or K2[PtCl6])yielded two groups of derivatives: [Cat]+[PtCl4]? and [Cat]+[PtCl6]?, which formally are counted among halometallate ionic liquids, however, due to their high melting points they should be classified into anionic platinum complexes rather than into ionic liquids. All the derivatives were isolated and characterized spectroscopically (NMR, ESI-MS)and crystallographic structures were determined for three derivatives: ([BMPy]2[PtCl4], [BMIM]2[PtCl6]and [BMMIM]2[PtCl6]. Moreover, their melting points were measured and thermal stability was assessed. The above derivatives were employed as catalysts for hydrosilylation of olefins with diverse properties. All the studied catalysts showed high activity and their insolubility in the reaction medium made easy their isolation and multiple use in subsequent catalytic runs. The most effective catalysts did not lose their activity even after ten runs, thereby they make a very good alternative to commonly used homogeneous catalysts. Their simple synthesis and stability make them interesting both for economic and ecological reasons.

DETERGENT COMPOSITION COMPRISING A CARBINOL FUNCTIONAL TRISILOXANE

A detergent composition comprises a trisiloxane having at least one carbinol functional group. The trisiloxane comprises the reaction product of (A) an initial trisiloxane and (B) an organic compound. Component (A) has a pendant silicon-bonded functional group selected from a hydrogen atom, an epoxy-containing group, an ethylenically unsaturated group, and an amine group. Typically, component (A) is free of certain terminal silicon-bonded functional groups and is free of polyoxyalkylene groups. Component (B) has a functional group reactive with the pendant silicon-bonded functional group of component (A), and has at least one hydroxyl functional group. The trisiloxane may be of the following general formula (I): (R13SiO1/2)(R1R3SiO2/2)(R13SiO1/2) (I). In formula (I), each R1 is an independently selected hydrocarbyl group. R3 may be selected from the groups (i) to (x) described herein, each of the groups having at least one carbinol group. Typically, the trisiloxane has 1-6 carbinol groups.

Platinum and rhodium complexes ligated by imidazolium-substituted phosphine as efficient and recyclable catalysts for hydrosilylation

Phosphine ligands functionalized with imidazolium salt were prepared and used for the synthesis of two new ionic Pt(0) complexes and four Rh(i) complexes. The catalysts show very good catalytic activity in hydrosilylation reaction of olefins of different polarities (1-octene and allyl glycidyl ether) with 1,1,1,3,5,5,5-heptamethyltrisiloxane. Their insolubility in the reaction medium facilitated their isolation and permitted their multiple use in subsequent catalytic runs. In hydrosilylation of nonpolar olefins, all the catalysts showed similar activity, while in hydrosilylation of polar olefins the catalysts containing the bromide anion showed higher activity. The results permitted identification of the most effective catalysts for hydrosilylation of olefins of different polarities. The most active complexes did not lose their activity even after 10 catalytic runs, thereby providing a very good alternative to the commonly used homogeneous catalysts.