Propylene Polymerization Performance with Ziegler-Natta Catalysts Combined with U-Donor and T01 Donor as External Donor
In propylene (C3) polymerization with Ziegler-Natta catalyst, not only internal donor but also external donor is very important to make isotactic polypropylene (PP) with higher yield. Most propylene-based polymers have been commercially produced with Ziegler-Natta catalysts combined with dialkyl-dia...
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MDPI AG
2022-08-01
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| Online Access: | https://www.mdpi.com/2073-4344/12/8/864 |
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| author | Padavattan Govindaswamy Emiko Wada Hiroyuki Kono Toshiya Uozumi Hideo Funabashi |
| author_facet | Padavattan Govindaswamy Emiko Wada Hiroyuki Kono Toshiya Uozumi Hideo Funabashi |
| author_sort | Padavattan Govindaswamy |
| collection | DOAJ |
| description | In propylene (C3) polymerization with Ziegler-Natta catalyst, not only internal donor but also external donor is very important to make isotactic polypropylene (PP) with higher yield. Most propylene-based polymers have been commercially produced with Ziegler-Natta catalysts combined with dialkyl-dialkoxy silane compounds (R<sub>2</sub>Si(OR)<sub>2</sub>) such as C-donor, P-donor, and D-donor as external donors. In this paper, we will introduce the propylene polymerization performance with aminosilane compounds, i.e., diethylamino triethoxy silane (U-donor) and bis(ethylamino) di-cyclopentyl silane (T01 donor), as external donor in Ziegler–Natta catalyst. The polymerization screening experiments were conducted using some triethoxyalkylsilanes compounds (<b>1</b>–<b>7</b>) and performances were compared with U-donor. The polymerization results of the binary donor system show improvement in stereoregularity. These aminosilane compounds exhibit high hydrogen response in propylene polymerization and high copolymerization performance of propylene (C3) and ethylene (C2) in ICP production compared with dialkyl-dialkoxy silane compounds. While using methanol as an additive along with external electron donor, as a serendipitous, the copolymerization activity, block ratio, EPR (ethylene-propylene rubber) content improve significantly for U-donor as compared with T01 donor and C-donor. |
| first_indexed | 2024-03-09T04:36:42Z |
| format | Article |
| id | doaj.art-43542fbc9136449b966a96f326382545 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T04:36:42Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-43542fbc9136449b966a96f3263825452023-12-03T13:26:10ZengMDPI AGCatalysts2073-43442022-08-0112886410.3390/catal12080864Propylene Polymerization Performance with Ziegler-Natta Catalysts Combined with U-Donor and T01 Donor as External DonorPadavattan Govindaswamy0Emiko Wada1Hiroyuki Kono2Toshiya Uozumi3Hideo Funabashi4Catalyst Development Department, Catalyst Division, Toho Titanium Co., Ltd., Chigasaki City 253-8510, Kanagawa, JapanCatalyst Development Department, Catalyst Division, Toho Titanium Co., Ltd., Chigasaki City 253-8510, Kanagawa, JapanCatalyst Development Department, Catalyst Division, Toho Titanium Co., Ltd., Chigasaki City 253-8510, Kanagawa, JapanCatalyst Development Department, Catalyst Division, Toho Titanium Co., Ltd., Chigasaki City 253-8510, Kanagawa, JapanCatalyst Development Department, Catalyst Division, Toho Titanium Co., Ltd., Chigasaki City 253-8510, Kanagawa, JapanIn propylene (C3) polymerization with Ziegler-Natta catalyst, not only internal donor but also external donor is very important to make isotactic polypropylene (PP) with higher yield. Most propylene-based polymers have been commercially produced with Ziegler-Natta catalysts combined with dialkyl-dialkoxy silane compounds (R<sub>2</sub>Si(OR)<sub>2</sub>) such as C-donor, P-donor, and D-donor as external donors. In this paper, we will introduce the propylene polymerization performance with aminosilane compounds, i.e., diethylamino triethoxy silane (U-donor) and bis(ethylamino) di-cyclopentyl silane (T01 donor), as external donor in Ziegler–Natta catalyst. The polymerization screening experiments were conducted using some triethoxyalkylsilanes compounds (<b>1</b>–<b>7</b>) and performances were compared with U-donor. The polymerization results of the binary donor system show improvement in stereoregularity. These aminosilane compounds exhibit high hydrogen response in propylene polymerization and high copolymerization performance of propylene (C3) and ethylene (C2) in ICP production compared with dialkyl-dialkoxy silane compounds. While using methanol as an additive along with external electron donor, as a serendipitous, the copolymerization activity, block ratio, EPR (ethylene-propylene rubber) content improve significantly for U-donor as compared with T01 donor and C-donor.https://www.mdpi.com/2073-4344/12/8/864Ziegler–Natta catalystsaminosilane external donorU-donorT01 donorpropylene polymerizationhydrogen response and impact copolymer (ICP) |
| spellingShingle | Padavattan Govindaswamy Emiko Wada Hiroyuki Kono Toshiya Uozumi Hideo Funabashi Propylene Polymerization Performance with Ziegler-Natta Catalysts Combined with U-Donor and T01 Donor as External Donor Catalysts Ziegler–Natta catalysts aminosilane external donor U-donor T01 donor propylene polymerization hydrogen response and impact copolymer (ICP) |
| title | Propylene Polymerization Performance with Ziegler-Natta Catalysts Combined with U-Donor and T01 Donor as External Donor |
| title_full | Propylene Polymerization Performance with Ziegler-Natta Catalysts Combined with U-Donor and T01 Donor as External Donor |
| title_fullStr | Propylene Polymerization Performance with Ziegler-Natta Catalysts Combined with U-Donor and T01 Donor as External Donor |
| title_full_unstemmed | Propylene Polymerization Performance with Ziegler-Natta Catalysts Combined with U-Donor and T01 Donor as External Donor |
| title_short | Propylene Polymerization Performance with Ziegler-Natta Catalysts Combined with U-Donor and T01 Donor as External Donor |
| title_sort | propylene polymerization performance with ziegler natta catalysts combined with u donor and t01 donor as external donor |
| topic | Ziegler–Natta catalysts aminosilane external donor U-donor T01 donor propylene polymerization hydrogen response and impact copolymer (ICP) |
| url | https://www.mdpi.com/2073-4344/12/8/864 |
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