C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/418
C08F 2/34 (2006.01) C08F 210/02 (2006.01) C08F 210/18 (2006.01) C08F 232/06 (2006.01)
Patent
CA 2024983
- 22 - ETHYLENE/PROPYLENE/ETHYLIDENE NORBORNENE RUBBERS Abstract of the Invention A process for the production of EPDM comprising reacting ethylene, propylene, ethylidene norbornene, and hydrogen, in the gas phase, in a fluidized bed, under polymerization conditions, in the presence of a catalyst system comprising: (a) a titanium based catalyst having the formula MgaTi(OR)bXc(ED)d wherein R is an aliphatic or aromatic hydrocarbon radical having 1 to 14 carbon atoms or COR' wherein R' is an aliphatic or aromatic hydrocarbon radical having 1 to 14 carbon atoms; each OR group is alike or different; each X is independently chlorine, bromine, or iodine ED is an electron donor a is 0.5 to 56; b is D, 1, or 2; c is 2 to 116; and d is greater than 1.5 a + 2; (b) at least one modifier having the formula BX3 or AlR(3-b)Xb wherein each R is alkyl or aryl and is alike or different, and X and b are as defined above for component (a), wherein components (a) and (b) are impregnated into an inorganic support; and (c) a hydrocarbyl aluminum cocatalyst with the following proviso: D-15832 - 23 - (i) the partial pressure of ethylene it in the range of about 10 to about 150 psi; (ii) the molar ratio of propylene to ethylene is in the range of about 1.5:1 to about 5:1; (iii) the molar ratio of hydrogen to ethylene is in the range of about 0.001:1 to about 0.1:1; and (iv) the amount of ethylidene norbornene is about 1.5 to about 15 percent by weight based on the weight of the fluidized bed. D-15832
Kriss Mark J.
Lee Kiu H.
Liu Han-Tai
Rifi Mahmoud R.
Kriss Mark J.
Lee Kiu H.
Liu Han-Tai
Rifi Mahmoud R.
Sim & Mcburney
LandOfFree
Ethylene/propylene/ethylidene norbornene rubbers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ethylene/propylene/ethylidene norbornene rubbers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ethylene/propylene/ethylidene norbornene rubbers will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1946434