| 摘要 |
PURPOSE: To obtain a lubricant containing a specific silicone composition as a main agent, capable of improving the fluidity, moldability and mold releasability of thermoplastic resins, preventing the staining of molds and the generation of deposits, improving workability, and imparting slidability and abrasion resistance. CONSTITUTION: The silicone lubricant for molding thermoplastic resins contains a main agent represented by the formula (R<1> is 1-6C alkyl; R<2> is 6-60C alkyl; m is 0-1000; n is 1-1000). Therein, R<1> is preferably methyl, and R<2> is preferably 12-40C alkyl. This is obtained by addition-reacting an unsaturated compound such as the mixture of 1-dodecene with 1-tetradodecene to methylhydrogenpolysiloxane-dimethylpolysiloxane copolymer in the presence of chlorophatinic acid to introduce the alkyl group. Examples of usable thermoplastic resin include polypropylene and polystyrene. |
