| abstract |
A solid product as the starting material of a carrier for a novel olefin polymerization catalyst; a solid catalyst composition containing the product; and a process for producing polyolefin by using the composition. The starting material comprises a solid product obtained by the reaction of metallic magnesium, an alcohol and a halogen compound containing at least 0.0001 gram atom of a halogen atom per gram atom of the metallic magnesium. The catalyst composition comprises the solid product, a titanium compound and, if necessary, an electron-donating compound. An olefin is polymerized by using the catalyst composition, an organometallic compound and, if necessary, an electron-donating compound. |