SILICON-CONTAINING POLYCYCLIC AROMATIC POLYMER AND ITS PRODUCTION

• Main Authors: YAMAMURA TAKETAMI, ISHIKAWA TOSHIHIRO, SHIOJI YASUHIRO, KUGIMOTO JUNICHI, SHIBUYA MASAKI
• Format: Patent
• Language: English
• Published: 08.11.1990
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; ORGANIC MACROMOLECULAR COMPOUNDS; SPINNING; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP

PURPOSE:To obtain the subject polymer which can give a high-strength and high-elasticity carbonaceous inorganic fiber by heat-treating a specified organosilicon polymer/polycyclic aromatic compound random copolymer and a premesophase polycyclic aromatic compound. CONSTITUTION:An organosilicon polymer having a ratio of the total number of the combined units Si-CH2 to the total number of the bonding units Si-Si in the range of 1:(0-20) and having a substituent such as H, a lower alkyl, a phenyl or a silyl as a side chain of the silicon atom is prepared. The carbon atoms of the aromatic ring of a polycyclic aromatic compound are bonded to the silicon atoms of this polymer to produce a random copolymer. 100 pts.wt. this random copolymer and 5 to 900 pts.wt. premesophase polycyclic aromatic compound obtained by hydrogenating a petroleum- or coal-derived pitch and heat-treating the product in a vacuum are subjected to heat reaction and/or heat melting at 200 to 500 deg.C to obtain a silicon-containing polycyclic aromatic polymer.