Use as coating materials

PUs are also widely used as coating materials sold as finished polymers, two-part systems, and prepolymer systems. Water-based PU systems are now available allowing easy home use. Aromatic diisocyanate-derived coatings generally offer poor external light stability while aliphatic-derived systems offer good light stability. 

Pyroconversion Low to high solubility depending Used as coating materials for... 

In addition to ABS, membranes using a polymer blend of chitosan and ABS with glutaraldehyde as a crosslinking agent have been used as coating materials for PES ultrafiltration membranes (90). 

Some of the salts used as coating materials, particularly carbonates, borates, and ammonium salts, in the course of melting produce a foam on the fiber through the liberation of such gases as carbon dioxide, water vapor, ammonia, and sulfur dioxide. These gases, being incombustible, retard burning by a process similar to that proposed in the gas theory as discussed below. 

Yasuda and Tano describe a Japanese patent for light curable compositions that are useful as coating materials. These consist of (A) 15-70% of a polyol, polyglycidyl ether,... 

Table 12.18 Chemical resistance of some thermoplasts used as coating materials. ...

Some poly [(organo)phosphazene] materials are of interest as biomedical polymers as non-interacting tissue replacement materials. Allcock examined the possibility of poly [(organo) phosphazenes] to be used as coating materials for artificial implants (Allcock et al, 1992). This coating materials should be able to enhance the antibacterial actiwty of the surface of implanted materials. 

From an applications point of view, IPNs are potentially useful as coating materials, packaging, etc. Frisch et recently studied the... 

BPA is used also in production of high-molecular-weight epoxies, a special group of very important epoxy resins, commonly used as coating materials. They are prepared mainly from low- or... 

Copolymers of methacrolein are used as coating material for immuno assays... 

Nanofibrous membranes have been primarily used as coating material to develop electrochemical sensors. In general, a piece of membrane (10-100 pm) can be simply placed over the electrode surface and kept tight thanks to an o-ring. Eventually, a drop of the solvent can be added to wet the membrane and improve its adhesion to the electrode surface. Figures 13.3 and 13.4 show a glassy carbon electrode coated with nanofibrous membranes. 

Zirconia stabilised with 8 wt.% zirconia was used as coating material for processing of the TBC specimens. All atmospheric plasma spraying (APS) was carried out by the processing group of the Institute for Materials and Processes in Energy Systems (IWVl) at the Research Centre Juelich. 

In addition to MEFs, several human cell lines have been shown to be suitable feeders for hPSC culture. It is rational to assume that adhesion-based cultures of hPSCs rely on the natural ECM polymers deposited by the feeder cells for attachment and proliferation. On the basis of this idea, researchers began to use the ECM components secreted by feeder cells. There are two types of ECMs that are employed for hPSC culture decellu-larized ECMs prepared from human fibroblasts from foreskin, dermal, or other human cell lines (which are chemically undefined but not xenogenic) [28,43-46] and single or mixed components of chemically defined ECMs, such as fibronectin, laminin, and vitronectin [47]. These ECMs are used as coating materials on cell culture dishes or scalfolds [48]. 

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