Polycarbonates coupling agents

This concept was explored by Lee and DiBenedetto (1992) who introduced a second LCP as a compatibUizing agent in order to improve the interfacial adhesion and dispersion between components of incompatible LCP/thermoplastic blends. The primary reason that the LCP and thermoplastic polymers are immiscible is due to molecular conformation differences or entropy effects. The concept for using a second LCP in such blends is that the two LCP s will be miscible due to entropy effects and the second LCP and the thermoplastic polymer will adhere due to specific interactions. The LCP coupling agent used in this work was a copolymer of PET and HBA known as PHB60. Blends of an LCP with both polycarbonate (PC) and PET were prepared with and without the addition of the second LCP... 

Bis(jS-hydroxyethyl-y-aminopropyltriethoxy silane n. A silane coupling agent used in reinforced epoxy resins, also in many reinforced thermoplastics such as PVC, polycarbonates, nylon, polypropylene, and polysulfones. 

The hydrosilylation of unsaturated polymers (e.g, polybutadiene, polyiso-prene, polyesters, polyenes, and polycarbonates) with a silane having hydrolyzable substituents at silicon atoms leads to polymeric systems with enhanced activity toward mineral fillers (32). Such process also offers a useful and convenient method for preparing silane-modified polymers that may find potential applications as rubber materials, adhesives, and drug delivery agents. Both >C=C< as well >C=0 bonds are capable of hydrosilylation. This modification is connected with a reversed use of the silane (siloxane) coupling agents. Trialkoxysilyl groups are commonly incorporated onto the polymers by Pt-catalyzed hydrosilylation... 

Silane coupling agents may also be directly used as coatings for a variety of applications (10,13,14). Coupling agents in coatings formulations can be used in either solvent- or water-borne systems, such as clear coats for automotive applications (13,15). Formulations can also be used to impart scratch and abrasion resistance to softer materials such as polycarbonate and poly(methyl methacrylate) (PMMA) (14). Applications of this type allow the use of materials whose bulk properties are desirable because the surface properties can be fine-tuned. 

M.A. Khan, F. Mina and L.T. Drzal Influent of silane coupling agents of different functionalities on the performance of jute polycarbonate composite. (2000)... 

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