| 摘要 |
<p>PURPOSE:To obtain a polyolefin capable of providing a cured material with rubbery elasticity excellent in heat and weather resistance and electrical characteristics by crosslinking and curing the polyolefin using various curing agents, by chlorinating and then reducing an oxidized type polyolefin. CONSTITUTION:An oxidized type polyolefin obtained, e.g. by thermal degradation of a polyolefin (preferably 10-10,000cP melting viscosity at 190 deg.C) using oxygen or ozone is chlorinated and then reduced to prepare a chlorinated polyolefin containing hydroxyl groups. The chlorination is carried out, preferably by dissolving the oxidized polyolefin in a chlorine-based solvent and blowing chlorine gas into the solution in the presence of a catalyst or under ultraviolet ray irradiation under the ordinary or a higher pressure at 0-130 deg.C. The resultant polyolefin is useful as a coating film composition for a paint, ink, binder, adhesive, etc.</p> |
