A multiblock copolymer, obtainable by copolymerization of a conjugated diene compound and a non-conjugated olefin, is characterized in that: a structure of the multiblock copolymer includes A-(B-A) x and/or B-(A-B) x , wherein "A" represents a block portion constituted of monomer units of a non-conjugated olefin, "B" represents a block portion constituted of monomer units of a conjugated diene compound, and "x" represents an integer ¥ 1; content of the non-conjugated olefin portion is ¤ 50 mol %; 0 mol % < crystal content of the non-conjugated olefin portion ¤ 20 mol %; and 0 % < degree of crystallinity of the non-conjugated olefin portion ¤ 40 %. Vulcanized rubber having high fracture resistance and high crack resistance (thus a rubber composition and a tire each using the vulcanized rubber and having such excellent physical properties) can be manufactured from the multiblock polymer.
MULTIBLOCK COPOLYMER, RUBBER COMPOSITION, AND TIRE
MULTIBLOCKCOPOLYMER, KAUTSCHUKZUSAMMENSETZUNG UND REIFEN
COPOLYMERE SEQUENCE, COMPOSITION DE CAOUTCHOUC, ET PNEUMATIQUE
2019-01-09
Patent
Electronic Resource
English
IPC: | C08F MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |