Novel mesogenic silicon compound (co) polymer and thermoplastic elastomer

摘要

A thermoplastic elastomer composed of a mesogen / silicon compound (co) polymer represented by the following formula (1) and having a number average molecular weight of 1,000 to 500,000 has transparency and rubber physical properties (rubber elasticity), Since it can be thermally reversibly (repetitively) molded, it can be suitably used for potting materials and various sealing materials. [Ar is a mesogenic group selected from the structure represented by the following formula. a represents a positive number of 0.5 to 1, and b represents a number of 0 to 0.5 (where a and b represent the ratio of the number of each repeating unit to the total of all repeating units in the molecule, respectively. A + b = 1). R1 is a monovalent hydrocarbon group not containing an aliphatic unsaturated bond having 1 to 8 carbon atoms, R2 is a hydrogen atom, -Si (CH3) 3, -Si (CH3) 2 (OH), -Si (CH3) 2 (CH = CH2) or -Si (CH3) 2 (CH2-CH = CH2). ]