Chlorinated Rubber Coatings

Chlorinated Rubber Coatings

Chlorinated rubber (CR) is manufactured from natural or synthetic rubber such as polypropylene, polyethylene, or polyisoprene which is degraded to low molecular mass compounds by mastication or addition of radical formers and dissolved in carbon tetrachloride. Chlorine gas is than introduced into the solution and will reacts with the raw material to form CR. The solution is then introduced into boiling water. The CR is than precipitated and vaporized. It is separated from water, rinsed, dried, and ground to form a white powder.
CR has some properties :
- high resistance to oxidizing agents (such as ozone or peroxide), water, inorganic salts, acids, alkalis, and gases.
- good solubility in almost conventional ssolvents except water, aliphatic hydrocarbons, and alcohols.
- good compability with a wide range of paint resins and plasticizers.
- low flammability.
- fungistatic and bacteriostatic behavior.
- compatible with almost all inorganic pigments and extenders, as well as many organic pigments.

Chlorinated rubber has high water resistance, it is used for underwater coatings on steel and concrete.