http://www.runyvmat.com/As the industry leader in phosphine ligands and catalysts for homogeneous catalysis, Solvay offers a range of phosphorus compounds used in a breadth of applications and markets. Our scalable phosphorus chemistry meets the unique requirements of reactions that are crucial to several manufacturing processes across markets and applications, including petrochemicals, life sciences, flavors and fragrances, agrochemicals, fine chemicals, and plastics and other polymers. And do you what is Phosphine Ligands? Phosphines are a three-valent phosphorus compound and act as a "soft" σ-donating ligand with an unshared electron pair. This gives solubilization and stabilization to organometallic complexes by forming complexes with various transition metal species including latter-period transition metals and others, and is also used for controlling the reactivity and selectivity of the transition metal promoted reactions. Electron density and bulkiness of phosphine ligands are greatly related to the reactivity of their forming metal complexes. Generally, the phosphine ligands with high electron density increase the reactivity of oxidative addition from a metal center, and their bulkiness improves the reductive elimination. For example, trialkylphosphines especially tert-butyl or cyclohexyl group substituted phosphines show the highest electron density while the electron density of triarylphosphines and phosphite are sequentially decreasing. On the other hand, as an index of the bulkiness of phosphine ligands, that of monodentate phosphine ligands shows the cone angle (θ) while bidentate phosphine ligands show the bite angle (ω). As the angle of the phosphine ligands is wider, their steric effect is greater and they are regarded as more bulky phosphine ligands. A monodentate phosphine ligand of tri(o-tolyl)phosphine, and bidentate phosphine ligands of 1,1'-bis(diphenylphosphino)ferrocene and Xantphos are known as representative bulky phosphine ligands. There are many different kinds of Phosphine Ligands, such as Chiral Phosphine Ligands, Chelated Phosphine Ligands, Biaryl Phosphine Ligand, Trisubstituted Phosphine Ligands and Other Phosphine Ligands. Homogeneous catalysis is an efficient alternative to its heterogeneous counterpart, and enables access to certain molecules that are not accessible through heterogeneous catalysis. Our high-performance phosphine ligands provide endless customization opportunities for catalytic processes. Phosphorus chemistry offers substantial diversity of structure, tunability and thermal stability, which leads to its use in many essential industries and an abundance of applications. A majority of Solvay's phosphorus technologies are available in liquid or solution form, which facilitates ease of handling and safe product stewardship. Solids are available if preferred. Produced via industry-recognized manufacturing processes, our phosphine ligands and catalysts can be manufactured at any scale. Solvay offers expertise and manufacturing wherewithal at any phase of the value chain, but specializes in developing ligand solutions from the initial R&D stage all the way to industrial-scale production and distribution. Except for Phosphine Ligands, there are also many other material Intermediate and Function Materials like Catalyst including Homogeneous Catalyst and Olefin Copolymerization Catalyst. posted an update 1년, 7개월전
http://www.ugw-hose.com/Unless you work in an industry that uses hydraulic-powered machinery, the chances are you’ll have little awareness of what a hydraulic hose does (or even that such a thing exists). The truth is hydraulic hoses are a key component in helping many of the UK and Ireland’s businesses to deliver their services, so they’re a vital cog that millions of people rely on each day.
What is hydraulic hose?
A hydraulic hose is a specialist type of hose that you’ll find in many commercial and industrial settings. Hydraulic hoses are typically constructed from flexible rubber or wire, and feature a series of layers to give the hose its strength and durability. These layers comprise of an inner tube, a reinforced layer and an outer layer.
What is the purpose of hydraulic hose?
Just like a hose you might use to water your garden, the purpose of a hydraulic hose is to allow fluid to flow from one component to another – in this case hydraulic fluid. The hose is the conduit that ensures the fluid is able to travel unimpeded and it’s a vital part of keeping hydraulics systems moving. In fact, if a hydraulic hose was to fail it can bring entire production lines to a standstill and take vital machinery offline until the hose can be replaced.
Construction options for hydraulic hose include reinforced, coiled, corrugated, or convoluted. Reinforced hose is constructed with some element of reinforcement—styles include textile braid, wire braid, wire helix, and other designs in many ply or layer configurations. Coiled hose is coiled for flexibility and elasticity. This feature often makes it expandable and easy to store. Corrugated hose contains corrugations, pleats, or spiral convolutions to increase flexibility and capacity for compression and elongation. Multi-element hydraulic hoses are constructed of more than one hose formed or adhered together in a flat, ribbon, or bundled configuration. Additional features to consider include integral end connections, anti-static, lay flat, crush-proof, flame-resistant, and explosion-proof.
In addition, material considerations include the type of fluid being conveyed and its concentration as well as substances that may attack the hose cover. Hose selection must ensure compatibility if it is to convey special oils or chemicals. The same holds for hose exposed to harsh environments. Substances such as UV light, ozone, saltwater, chemicals, and pollutants can cause degradation and premature failure. And for Industrial Hose, there are many different types for different usages such as Pressure Washer Hose, Steel Wire Braid Hydraulic Hose, Steel Wire Spiral Hydraulic Hose and so on.
While hydraulic hose is usually constructed of multiple materials, the most commonly use primary materials include elastomers, fluoropolymers and silicone, thermoplastics, metal, and composite or laminated structures. Elastomeric or rubber hydraulic hose are often selected for their flexibility. Fluoropolymer hose offer good flex life, superior chemical and corrosion resistance, and can handle high temperatures. Thermoplastic hydraulic hose offer tight minimum bed radii and excellent kink resistance. Metal hoses can handle high temperature flow materials and often can handle very high pressures. They can be either stiff or flexible.
And a hydraulic hose mostly is used together with Hydraulic Fitting(Hydraulic Hose Fitting) and Hydraulic Quick Coupler.