Alloying Coupling Agents

Unite. [Aristech] Chemically modified polyolefins wiA anhydride functionality compatibiiizer for polymer blends and alloys, coupling agent in reinfaced and fill polymers, adhesive 2%eat for bonding polyolefins to various substrates. 

Uses Coatings/emulsions/floor polish ingred. dispersion aid for pigments, mins., glass-filled plastics adhesion promoters in hot melt applies. compatibilizer in polymer blends and alloys coupling agent in reinforced PE and PP Manuf./Distnb. Aldrich http //www.sigma-aldrich.com... 

Uses Compatibilizer in blends and alloys, polymeric coupling agent in reinforced or recycled PE or PP, adhesives and sealants, extruded or powd. coatings, textile adhesives, hot melts Properties Melt index 40 dg/min (190 C) dens. 0.925 g/cc soften, pt. ( flcat) 90 C tens. str. 14.1 MPa tens, elong. 80% flex. mod. 403 MPa 0.85%. maleic anhydride... 

Uses Compatibilizer in blends and alloys polymeric coupling agent in reinforced or recycled PE or PP, adhesives, sealants extrusion coating resin cable/wire Jacketing pipe/profile extrusions film (sacks, food wrap, earner bags) inj. mold goods (toys, elec, fittings, bushes, seals, components) rotationally molded tanks, boats textile adhesives hot melts... 

Polyblends and alloys (compatible systems) introduced a new dimension to the world of polymers, leading to a significant saving by avoiding the manufacture of new polymers or copolymers. These are industrial mixtures that combine certain properties and thus often reduce the cost of the product. When compatibility is reached, division into separate phases is eliminated (which may reduce mechanical properties). Therefore the use of compatibiliz-ers as coupling agents has been increased. In the ideal case of compatibility... 

Proteins are also deposited on any solid substrate which has come into contact with the suspension holding the cells. Many studies have shown that a film of polymeric material builds up on all surfaces, such as glass or polymer, which have held the cell dispersion. These slimy films may have an effect on the cell adhesion to that surface. For example, when fibronectin was coated onto polished metal surfaces of titanium and cobalt alloys, the cell adhesion increased by a factor of 2.6. In this manner, the adhesion molecules act like the silane coupling agents used to coat glass fibers in Section 16.10. 

A. Seth and W.J. van Ooij, in A Novel, Low-VOC, Chromate-Free, One-Step Primer System for the Corrosion Protection of Metals and Alloys (K.L. Mittal, ed.), presented at the Fifth International Symposium on Silanes and Other Coupling Agents, Toronto, Canada, June 22-24,2(X)5 and has been accepted for pubhcation in Silanes and Other Coupling Agents. 

The use of silane coupling agents has also been reported to improve the durability of 6A1-4V-Ti alloy joints bonded with an epoxy adhesive. ... 

Coupling agents based on titanium and zirconium have been used to improve adhesive properties between polymers and filler-particles and to treat aluminium alloy for adhesive bonding [16]. Like the silanes, they react with surface hydroxyl groups as shown below, but there is no condensation polymerisation to produce a polymer network at the interface. 

Chemical coupling agent for glass, mica, and ATH reinforced polyethylene giving improved physical and thermal properties. Coiiq atibilizer for polymer alloys of polyethylene and polar polymers, such as polyamides, to give improved processability and mechanical properties. 

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