BLOCK COPOLYMER HYDRIDE AND LAMINATED GLASS

• Main Authors: ISHIGURO, Atsushi, KOHARA, Teiji, KOIDE, Youhei, HARAUCHI, Yosuke
• Format: Patent
• Language: English; French; German
• Published: 22.08.2018
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; COMPOSITIONS BASED THEREON; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; MINERAL OR SLAG WOOL; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS

The present invention is a hydrogenated block copolymer [D] obtained by hydrogenating a block copolymer [C] that comprises two or more polymer blocks [A] and one or more polymer blocks [B], the polymer block [A] comprising a monomer unit derived from an aromatic vinyl compound as a main component, and the polymer block [B] comprising a monomer unit derived from a linear conjugated diene compound as a main component, the hydrogenated block copolymer [D] having a low-temperature-side tan´ peak temperature of -20 to 20°C and a high-temperature-side tan´ peak temperature of 100°C or more with respect to dynamic viscoelastic properties, the hydrogenated block copolymer [D] being obtained by hydrogenating 90% or more of unsaturated carbon-carbon bonds included in a main chain, a side chain, and an aromatic ring of the block copolymer [C] that is characterized in that a ratio (wA:wB) of a total weight fraction wA of the polymer block [A] in the block copolymer [C] to a total weight fraction wB of the polymer block [B] in the block copolymer [C] is 15:85 to 40:60, and a ratio of structural units derived from 1,2-addition polymerization and 3,4-addition polymerization with respect to a total amount of structural units derived from the linear conjugated diene compound included in the polymer block [B] is 40 wt% or more, and the hydrogenated block copolymer [D] having a weight average molecular weight of 40,000 to 200,000.