Anticorrosion Papers

These papers prevent the rusting of iron parts and the tarnishing of silver, aluminum, and copper. Generally they have to be produced in alkaline wet-end conditions in the absence of any acid and alum. Additionally the paper has to be impregnated or coated with chemicals that inhibit corrosion, e.g., sodium nitrite or sodium benzoate. The paper is coated by deposition of the chemicals from the vapor phase. 

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Corrosion. Anticorrosion measures have become standard ia pipeline desiga, coastmctioa, and maintenance ia the oil and gas iadustries the principal measures are appHcation of corrosion-preventive coatings and cathodic protection for exterior protection and chemical additives for iaterior protectioa. Pipe for pipelines may be bought with a variety of coatiags, such as tar, fiber glass, felt and heavy paper, epoxy, polyethylene, etc, either pre-apphed or coated and wrapped on the job with special machines as the pipe is lowered iato the treach. An electric detector is used to determine if a coatiag gap (hoHday) exists bare spots are coated before the pipe is laid (see Corrosion and corrosion control). 

Another line of approach to the practical application of 1,3-oxazine derivatives was the suggested use of tetrahydro-1,3-oxazine derivatives as detergents for textile industry, as anticorrosion chemicals, and polymers from 2-oxo derivatives as additives to improve the properties of paper and textiles. ... 

It has been estimated that the consumption of rubber in ebonite products increased on an average of about 6% a year until 1951 when different plastics appeared in the market as competitive materials [6]. But because of the superiority of ebonites in acid and chlorine duties, it still maintains its place in the process industries as a material of construction as evidenced by its increased use in anticorrosive lining of chemical process vessels and tanks for the process industries and rolls for steel and textile and paper and pulp industries. 

Viscosity of molten wax (ASTM D-3236) is of importance in applications involving coating or dipping processes because it influences the quality of coating obtained. Examples of such applications are paper converting, hot-dip anticorrosion coatings, and taper manufacturing. 

Historically the first anticorrosion techniques to appear were combined films - paper and cardboard-based materials covered with paraffin, microcrystalline wax, synthetic latex or PE. These materials are accessible, cheap, rather strong, wear resistant, and display elasticity, vapor and light-impermeability, moisture resistance, shape stability, susceptibility to color... 

There is one more method of adding resistance to moisture and anticorrosive properties to carton by the introduction of Cl into the polymer latex coating. The film-forming water or organic solvent-based components are used to form a durable inhibited polymer coating on the paper glued directly on the inner side of the carton. 

Fig. 2.2. Anticorrosion combined film materials (1) polyester film (2) aluminum foil (3) rubber glue (4) fluoroplastic film (5) resin glue (6) paper...

The paper is devoted to development of novel approach to dope coatings with active anticorrosion species with self-healing ability. They contain nanoreservoirs which can store active agents and provide controllable release of them. The titania nanoparticles doped with cerium ions and organic inhibitors were used as nanocontainers to dope the hybrid sol-gel matrix and to provide long-term corrosion protection. 

Chem. Descrip. Japan (Rhus succedanea) wax CAS 8001-39-6 EINECS/ELINCS 310-125-5 Uses Wax for package coatings, textile finishes, cosmetics, lubricants for textile, metal, and rope, pencils, crayons, wax modeling, buffing compds., pharmaceuticals anticorrosion agent for metal food pkg. adhesives, coatings, paper... 

Chem. Descrip. Dimethicone copolyol emulsion Uses Defoamer for water-based emulsion paints and water-thinnable systems, building protection coatings (acrylic, styrene-acrylic, PVA), wood/furniture varnishes, anticorrosive coatings/industrial paints (alkyd, polyester, acrylic), polymer emulsions defoamer in food-contact paper/ paperboard... 

Uses Surfactant, mar resist, aid for water- and solv.-based paints (alkyd, alkyd-melamine, PU, vinyl), building protection coatings, anticorrosive paints, wood/furniture varnishes, printing inks defoamer in food-contact paper/paperboard... 

In order to reduce the intrinsic porosity and to increase the barrier effect of anticorrosion CP-based coatings, composite systems have been considered where one component is a CP and other component can be organic or inorganic. In literature, several recent papers have been published on this topic. Two classes of composites based on CPs could be individuated (Table 10.4). In the first class, the matrix is a CP, usually PANI and its... 

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