Segmented copolymer composition
A technology of block copolymer and composition, applied in the field of block copolymer composition, can solve problems such as obvious adhesion, and achieve the effect of low viscosity
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[0175] Hereinafter, an Example and a comparative example are given, and this invention is demonstrated more concretely. In addition, parts and % in each example are based on weight unless otherwise stated.
[0176] Various measurements were performed according to the following methods.
[0177] [Weight average molecular weight of each block copolymer and block copolymer mixture]
[0178] It was calculated|required as polystyrene-equivalent molecular weight using high-performance liquid chromatography using tetrahydrofuran as a carrier at a flow rate of 0.35 ml / min. The device is HLC8320 manufactured by TOSOH CORPORATION, the column is three connected columns of Shodex KF-404HQ manufactured by Showa Denko Corporation (column temperature is 40°C), the detector is a differential refractometer and an ultraviolet detector, and the molecular weight is calibrated in the Polymer Laboratory 12 point implementation of standard polystyrene (5M to 3M) manufactured by the company.
[01...
manufacture example 1
[0207]In a pressure-resistant reactor, 23.0 kg of cyclohexane, 3 mmol of N,N,N',N'-tetramethylethylenediamine (hereinafter referred to as TMEDA), and 1.6 kg of styrene were added , was stirred at 40°C, at this time, 92 mmol of n-butyllithium was added, and the mixture was polymerized for 1 hour while the temperature was raised to 50°C. The polymerization conversion rate of styrene was 100%. Next, 4.9 kg of isoprene was continuously added to the reactor over 1 hour while controlling the temperature so as to maintain 50 to 60°C. After the addition of isoprene was completed, polymerization was further carried out for 1 hour. The polymerization conversion rate of isoprene was 100%. Next, 15 millimoles of dimethyldichlorosilane was added as a coupling agent, and a coupling reaction was carried out for 2 hours to form (Ar-D) as a block copolymer b. n - A symmetrical styrene-isoprene-styrene block copolymer represented by X. Then, add 110 millimoles of methanol as a polymerizatio...
manufacture example 2
[0214] In a pressure-resistant reactor, add 23.0 kg of cyclohexane, 2 mmol of TMEDA, and 1.4 kg of styrene, and stir at 40°C. At this time, add 100 mmol of n-butyllithium while raising the temperature to 50°C while polymerizing for 1 hour. The polymerization conversion rate of styrene was 100%. Next, 3.6 kg of isoprene was continuously added to the reactor over 1 hour while controlling the temperature so as to maintain 50 to 60°C. After the addition of isoprene was completed, polymerization was further carried out for 1 hour. The polymerization conversion rate of isoprene was 100%. Thereafter, 1.4 kg of styrene was continuously added over 1 hour while controlling the temperature so as to maintain 50 to 60°C. After the addition of styrene was completed, polymerization was continued for 1 hour to form a symmetrical styrene-isoprene-styrene block copolymer represented by Ar-D-Ar as block copolymer b. The polymerization conversion rate of styrene was 100%. Then, 120 mmol of m...
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