Weathering metals

Chem. Descrip. Vinyloxazoline diester of an unsat. fatty acid Uses Monomer for polymerization, improving pigment wetting and resin props, (adhesion to metal, weathering, corrosion resist.), for use in alkyd resins, acrylic/vinyl resins, car repair/primer systems gloss aid for acrylic topcoats applied on SER-AD FX 521 modified alkyd primers Properties Gardner 11 max. clear liq. dens. 940 kg/m (20 C) vise. 275 mPa s (20 C) acid no. 10 max. flash pt. > 100 C 100% act. 

Sonomeric 1 One-part, low modulus. For horizontal joints in metal Weather resistant, jet fuel... 

Spring metal weather stripping (for doors and double-hung windows)... 

Pipe insulation should be noncombustible. Where hot piping insulation can be exposed to hydrocarbon leaks it should be provided with metal weather jacketing because oil soaked into the insulation can autoignite at line temperatures as low... 

In very hot weather, the condenser water should first be chilled by passing it through a tall spiral of soft metal compo tubing immersed in a bucket of ice-water. 

Its advantages include impermeability to air, excellent adhesion to metal, and good resistance to oils, weathering, and low temperature. 

Silicone rubbers have excellent ozone and weathering resistance, good electrical properties, and good adhesion to metal. 

FWWMR Finish. The abbreviation for fire, water, weather, and mildew resistance, FWWMR, has been used to describe treatment with a chlorinated organic metal oxide. Plasticizers, coloring pigments, fiUers, stabilizers, or fungicides usuaUy are added. However, hand, drape, flexibUity, and color of the fabric are more affected by this type of finish than by other flame retardants. Add-ons of up to 60% are required in many cases to obtain... 

Aircraft Sealants. Polysulfides have been used for sealing fuel tanks and aircraft stmctural components since the 1940s. There are stringent requirements for these sealants. They must have outstanding resistance to fuels and exceUent adhesion to many different materials such as various metal aUoys and protective coatings used in aircraft constmction. The sealants must also perform in extremely variable weather conditions (10). The polysulfides have an exceUent performance record. 

The increasing use of sihconized coatings for weather durabiUty caused severe masking problems for the all-metal, filter mesh-like catalyst elements available in the 1970s. Interest in catalytic afterburners increased when dispersed-phase precious metal—alumin a-on-ceramic honeycomb catalysts offered economically attractive results. 

Contamination of waters with ai senic occurs as a result of a number of industrial activities such as treatment of industrial wastes, fertilizers, pesticides production, mining, metal smelting etc. and natural processes (e.g. weathering of minerals, volcanic and biological activities). 

Titanium dioxide used for adhesive applications should contain an inorganic coating to control polarity, improve its ease of dispersion, and improve its weather resistance. The inorganic coating (zirconium dioxide, silica, alumina) is applied in the aqueous sluny by precipitation of one or more hydrated metal oxides and by neutralization of acidic and alkaline compounds. 

Metal oxides. Zinc oxide is the most effective metal oxide. The zinc oxide should have a low lead content. Zinc oxide has three main functions (a) promote cure (b) improves ageing, heat and weathering resistance (c) acid acceptor. In general, 2-5 phr zinc oxide is added in latex formulations. 

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