US 12,305,028 B2
High propylene content EP having low glass transition temperatures
Zhifeng Bai, Houston, TX (US); Jo Ann M. Canich, Houston, TX (US); Jingwen Zhang, Houston, TX (US); Peijun Jiang, Katy, TX (US); Adrian Garcia Barry, Houston, TX (US); Chase A. Eckert, Houston, TX (US); and Sarah J. Mattler, League City, TX (US)
Assigned to ExxonMobil Engineering & Technology Company, Baytown, TX (US)
Appl. No. 17/626,601
Filed by ExxonMobil Chemical Patents Inc., Baytown, TX (US)
PCT Filed Jul. 17, 2020, PCT No. PCT/US2020/042597
§ 371(c)(1), (2) Date Jan. 12, 2022,
PCT Pub. No. WO2021/011892, PCT Pub. Date Jan. 21, 2021.
Claims priority of provisional application 62/875,196, filed on Jul. 17, 2019.
Prior Publication US 2022/0251361 A1, Aug. 11, 2022
Int. Cl. C08F 210/16 (2006.01); B60C 1/00 (2006.01); C08F 4/602 (2006.01); C08F 4/64 (2006.01); C08F 4/6592 (2006.01); C08F 210/02 (2006.01); C08F 210/06 (2006.01); C08J 3/22 (2006.01); C08J 3/24 (2006.01); C08K 5/01 (2006.01); C08L 7/00 (2006.01); C08L 9/00 (2006.01); C08L 23/16 (2006.01); C08L 23/22 (2006.01); C08L 23/283 (2025.01); C09J 123/16 (2006.01)
CPC C08L 23/16 (2013.01) [B60C 1/0008 (2013.01); B60C 1/0025 (2013.01); C08F 4/6028 (2013.01); C08F 4/6592 (2013.01); C08F 210/02 (2013.01); C08F 210/06 (2013.01); C08J 3/22 (2013.01); C08J 3/24 (2013.01); C08K 5/01 (2013.01); C08L 7/00 (2013.01); C08L 9/00 (2013.01); C08L 23/22 (2013.01); C08L 23/283 (2013.01); C09J 123/16 (2013.01); C08F 210/16 (2013.01); C08L 2205/02 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2312/00 (2013.01); C08L 2314/06 (2013.01); C09J 2423/16 (2013.01); C09J 2467/006 (2013.01)] 24 Claims
 
1. A method for producing a C3-C40 olefin-ethylene copolymer comprising:
contacting a C3-C40 olefin and ethylene with a catalyst system comprising an activator and a catalyst compound represented by formula (I):
TyCp′mMGnXq  (I)
wherein: Cp′ is a tetrahydroindacenyl group, wherein the tetrahydroindacenyl group tetrahydro-s-indacenyl or tetrahydro-as-indacenyl, and wherein the tetrahydroindacenyl group is optionally substituted or unsubstituted, provided that when Cp′ is tetrahydro-s-indacenyl: 1) the 3 and/or 4 positions are not aryl or substituted aryl, 2) the 3 position is not directly bonded to a group 15 or 16 heteroatom, 3) there are no additional rings fused to the tetrahydroindacenyl ligand, 4) T is not bonded to the 2-position, and 5) the 5, 6, or 7-position is geminally disubstituted;
M is a group 3, 4, 5, or 6 transition metal;
T is a bridging group;
y is 0 or 1, indicating the absence or presence of T;
G is a heteroatom group represented by the formula JRiz-y where J is N, P, O or S,
Ri is a C1 to C100 hydrocarbyl group, and z is 2 when J is N or P, and z is 1 when J is O or S;
X is a leaving group;
m=1; n=1, 2 or 3; q=1, 2 or 3; and the sum of m+n+q is equal to the oxidation state of the transition metal; and
obtaining the a C3-C40 olefin-ethylene copolymer comprising from 0.5 to 43 wt % of ethylene, and from 99.5 to 57 wt % C3-C40 olefin, and wherein the copolymer has a Tg (° C.) is from 0 to −60° C.