KINETIC STUDY FOR THE DECAY RATE OF ETHYLENE POLYMERIZATION CATALYZED OVER SILICA SUPPORTED TiCL<SUB>4</SUB>/MgCl<SUB>2</SUB> CATALYSTS

KIM I; WOO SI

Korean Journal of Chemical Engineering, Vol.7, No.2, 95-99, April, 1990

KINETIC STUDY FOR THE DECAY RATE OF ETHYLENE POLYMERIZATION CATALYZED OVER SILICA SUPPORTED TiCL₄/MgCl₂ CATALYSTS

The kinetics for decay rate of ethylene polymerization catalyzed with TiCl₄/MgCl₂/SiO₂ has been investigated in the range of temperatures between 40 and 90℃and in the range of ethylene pressures between 4 and 12.4 atm. The decay of polymerization rate was fitted well by the type of first order decay. The decay rate constant caused by monomer could be expressed by k’_d= C ·[M]^-1/2. Some plausible speculation have been proposed on the deactivation mechanism caused by monomer. The activation energy for the deactivation reaction is 9.8kcal/mole.

[References]

Gianini U, Makromol. Chem., 5, 216 (1981)
Keii T, Suzuki E, Tamura M, Murata M, Doi Y, Makromol. Chem., 183, 2285 (1982)
Wagner BE, Goeke GL, Karol FJ, Goorge KF, European Patent, Appl. 0,055,605 (1981)
Kim I, Kim JH, Woo SI, J. Appl. Polym. Sci., 39, 837 (1990)
Kim I, Woo SI, Polym. J., 21, 697 (1989)
Keii T, Soga K, Saiki N, J. Polym. Sci. C: Polym. Lett., 16, 1507 (1967)
Chien JCW, Kuo CI, J. Polym. Sci. A: Polym. Chem., 24, 2707 (1986)
Kohara T, Shinoyama M, Doi Y, Keii T, Makromol. Chem., 180, 2139 (1979)
Doi Y, Murata M, Yano K, Keii T, Ind. Eng. Chem. Prod. Res. Dev., 21, 580 (1982)
Chien JCW, Kuo CI, J. Polym. Sci. A: Polym. Chem., 23, 761 (1985)
Kim I, Woo SI, Polym. Bull., in press
Duck EW, Grant D, Kronfli E, Eur. Polym. J., 15, 625 (1979)
Kashiwa N, Yoshitake J, Polym. Bull., 12, 99 (1984)
Chien JCW, Wu JC, J. Polym. Sci. A: Polym. Chem., 20, 2445 (1982)

[Referenced By]

[1] Gianini U, Makromol. Chem., 5, 216 (1981)

[2] Keii T, Suzuki E, Tamura M, Murata M, Doi Y, Makromol. Chem., 183, 2285 (1982)

[3] Wagner BE, Goeke GL, Karol FJ, Goorge KF, European Patent, Appl. 0,055,605 (1981)

[4] Kim I, Kim JH, Woo SI, J. Appl. Polym. Sci., 39, 837 (1990)

[5] Kim I, Woo SI, Polym. J., 21, 697 (1989)

[6] Keii T, Soga K, Saiki N, J. Polym. Sci. C: Polym. Lett., 16, 1507 (1967)

[7] Chien JCW, Kuo CI, J. Polym. Sci. A: Polym. Chem., 24, 2707 (1986)

[8] Kohara T, Shinoyama M, Doi Y, Keii T, Makromol. Chem., 180, 2139 (1979)

[9] Doi Y, Murata M, Yano K, Keii T, Ind. Eng. Chem. Prod. Res. Dev., 21, 580 (1982)

[10] Chien JCW, Kuo CI, J. Polym. Sci. A: Polym. Chem., 23, 761 (1985)

[11] Kim I, Woo SI, Polym. Bull., in press

[12] Duck EW, Grant D, Kronfli E, Eur. Polym. J., 15, 625 (1979)

[13] Kashiwa N, Yoshitake J, Polym. Bull., 12, 99 (1984)

[14] Chien JCW, Wu JC, J. Polym. Sci. A: Polym. Chem., 20, 2445 (1982)