Выдержка
Acetylacetonate and 4-arylimino-2-pentanonate carbonyl complexes of rhodium(I) [Rh(RC(O)C(R’)C(O)R“)(CO) 2] (1: R = Me, R’ = H, R'’ = Me; 2: R = Me, R’ = Cl, R'’ = Me; 3: R = Me, R’ = H, R'’ = CO 2Me; 4: R = Ph, R’ = H, R'’ = Me; 5: R = Ph, R’ = H, R'’ = Ph) and [Rh(MeC(NR’’’)CHC(O)Me)(CO) 2] (6: R’'’ = Ph; 7: R’'’ = 2,6-Me 2C 6H 3) were examined as hydrosilylation cross-linking catalysts at RT for the reaction of poly(dimethylsiloxane-co-ethylhydrosiloxane) copolymer with vinyl terminated poly(dimethylsiloxane) or vinyl terminated poly(dimethylsiloxane-co-styrene) copolymer. All complexes allow cross-linking of vinyl- and hydride-containing polysiloxanes and copolymers at RT without inhibitor addition. Complexes 1–7 possess catalytic activity comparable to the industrially used complex of Pt 0 and divinyltetramethyldisiloxane (Karstedt's catalyst). 1 is the most active among the studied rhodium complexes at 1.0 × 10 −4 mol⋅L −1 and 1.0 × 10 −5 mol⋅L −1. Silicone rubbers obtained with the rhodium catalysts compared to Karstedt's catalyst possess no visible defects (bubbles or cracks), and differed by improved elastic properties (the elongation at break increased from 160 to 255%) The activity and improved silicone rubber properties using 1 renders it one of the suitable alternatives to Karstedt's catalyst.
| Язык оригинала | английский |
|---|---|
| Страницы (с-по) | 193–200 |
| Число страниц | 8 |
| Журнал | Journal of Catalysis |
| Том | 372 |
| DOI | |
| Состояние | Опубликовано - апр 2019 |
Отпечаток
Предметные области Scopus
- Химия материалов
- Пластик и полимеры
- Катализ
- Органическая химия
- Физическая и теоретическая химия
Ключевые слова
- Hydrosilylation
- Cross-linking
- Rhodium complexes
- Silicones
- Mechanical properties
Цитировать
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Rhodium(I)-catalysed cross-linking of polysiloxanes conducted at room temperature. / Dobrynin, Mikhail V.; Pretorius, Carla; Dumisani, Kama; Roodt, Andreas; Boyarskiy, Vadim P.; Islamova, Regina M.
В: Journal of Catalysis, Том 372, 04.2019, стр. 193–200.Результат исследований: Научные публикации в периодических изданиях › статья
TY - JOUR
T1 - Rhodium(I)-catalysed cross-linking of polysiloxanes conducted at room temperature
AU - Dobrynin, Mikhail V.
AU - Pretorius, Carla
AU - Dumisani, Kama
AU - Roodt, Andreas
AU - Boyarskiy, Vadim P.
AU - Islamova, Regina M.
PY - 2019/4
Y1 - 2019/4
N2 - Acetylacetonate and 4-arylimino-2-pentanonate carbonyl complexes of rhodium(I) [Rh(RC(O)C(R’)C(O)R“)(CO) 2] (1: R = Me, R’ = H, R'’ = Me; 2: R = Me, R’ = Cl, R'’ = Me; 3: R = Me, R’ = H, R'’ = CO 2Me; 4: R = Ph, R’ = H, R'’ = Me; 5: R = Ph, R’ = H, R'’ = Ph) and [Rh(MeC(NR’’’)CHC(O)Me)(CO) 2] (6: R’'’ = Ph; 7: R’'’ = 2,6-Me 2C 6H 3) were examined as hydrosilylation cross-linking catalysts at RT for the reaction of poly(dimethylsiloxane-co-ethylhydrosiloxane) copolymer with vinyl terminated poly(dimethylsiloxane) or vinyl terminated poly(dimethylsiloxane-co-styrene) copolymer. All complexes allow cross-linking of vinyl- and hydride-containing polysiloxanes and copolymers at RT without inhibitor addition. Complexes 1–7 possess catalytic activity comparable to the industrially used complex of Pt 0 and divinyltetramethyldisiloxane (Karstedt's catalyst). 1 is the most active among the studied rhodium complexes at 1.0 × 10 −4 mol⋅L −1 and 1.0 × 10 −5 mol⋅L −1. Silicone rubbers obtained with the rhodium catalysts compared to Karstedt's catalyst possess no visible defects (bubbles or cracks), and differed by improved elastic properties (the elongation at break increased from 160 to 255%) The activity and improved silicone rubber properties using 1 renders it one of the suitable alternatives to Karstedt's catalyst.
AB - Acetylacetonate and 4-arylimino-2-pentanonate carbonyl complexes of rhodium(I) [Rh(RC(O)C(R’)C(O)R“)(CO) 2] (1: R = Me, R’ = H, R'’ = Me; 2: R = Me, R’ = Cl, R'’ = Me; 3: R = Me, R’ = H, R'’ = CO 2Me; 4: R = Ph, R’ = H, R'’ = Me; 5: R = Ph, R’ = H, R'’ = Ph) and [Rh(MeC(NR’’’)CHC(O)Me)(CO) 2] (6: R’'’ = Ph; 7: R’'’ = 2,6-Me 2C 6H 3) were examined as hydrosilylation cross-linking catalysts at RT for the reaction of poly(dimethylsiloxane-co-ethylhydrosiloxane) copolymer with vinyl terminated poly(dimethylsiloxane) or vinyl terminated poly(dimethylsiloxane-co-styrene) copolymer. All complexes allow cross-linking of vinyl- and hydride-containing polysiloxanes and copolymers at RT without inhibitor addition. Complexes 1–7 possess catalytic activity comparable to the industrially used complex of Pt 0 and divinyltetramethyldisiloxane (Karstedt's catalyst). 1 is the most active among the studied rhodium complexes at 1.0 × 10 −4 mol⋅L −1 and 1.0 × 10 −5 mol⋅L −1. Silicone rubbers obtained with the rhodium catalysts compared to Karstedt's catalyst possess no visible defects (bubbles or cracks), and differed by improved elastic properties (the elongation at break increased from 160 to 255%) The activity and improved silicone rubber properties using 1 renders it one of the suitable alternatives to Karstedt's catalyst.
KW - Hydrosilylation
KW - Cross-linking
KW - Rhodium complexes
KW - Silicones
KW - Mechanical properties
KW - Cross-linking
KW - Hydrosilylation
KW - Mechanical properties
KW - Rhodium complexes
KW - Silicones
KW - RHODIUM
KW - POLY(DIMETHYLSILOXANE)
KW - PLATINUM
KW - CATALYTIC HYDROSILYLATION
KW - FUNCTIONALIZATION
KW - SILICONE-RUBBER
KW - SURFACE
KW - SYSTEMS
KW - METAL-COMPLEXES
KW - PDMS
UR - http://www.scopus.com/inward/record.url?scp=85062860913&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/rhodiumicatalysed-crosslinking-polysiloxanes-conducted-room-temperature
U2 - 10.1016/j.jcat.2019.03.004
DO - 10.1016/j.jcat.2019.03.004
M3 - Article
VL - 372
SP - 193
EP - 200
JO - Journal of Catalysis
JF - Journal of Catalysis
SN - 0021-9517
ER -