Oligomeric organosilanes, the production thereof and the use thereof in rubber mixtures
A polyorganosilane and alkyl technology, which is applied in organic chemistry, chemical instruments and methods, compounds of group 4/14 elements of the periodic table, etc., can solve problems such as poor processability and poor tear strength
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Embodiment 1
[0122] by VP Si / octyltriethoxysilane / Marlosol (1:0.5:0.5)—0.8 equivalent water to prepare
[0123] VP Si (417g) and octyltriethoxysilane (242g) were charged to a stirring apparatus and heated to 85°C. A mixture of water (38 g) and concentrated HCl (0.3 g, 37%) in ethanol (363 g) was then added dropwise and the mixture was stirred for 8.5 hours. After the end of the oligomerization, the solvent and alcohol formed in the hydrolysis were removed under reduced pressure. Add Marlosol (368g) and tetra-n-butyl titanate (0.5g) and heat to 140° C. for 1 hour to react. The ethanol formed was removed by distillation under reduced pressure. The bottom product (733 g, 95% of theory) was a viscous orange liquid.
[0124] Density (20°C): 1.012g / cm 3
[0125] 29 Si NMR: 3% silane (VP Si Octyltriethoxysilane), 49% M structure, 40% D structure, 9% T structure
[0126] GPC: Mn=967g / mol, Mw=1234, Mz=1536, PDI=1.2761
[0127] Alkyl polyether group -O-(R 5 -O) m -R 6 Molar ratio t...
Embodiment 2
[0129] by VP Si / Propyltriethoxysilane / Marlosol (1:0.5:0.5)—0.8 equivalent water to prepare
[0130] VP Si (417g) and propyltriethoxysilane (181g) were added to a stirring apparatus and heated to 85°C. A mixture of water (38 g) and concentrated HCl (0.3 g, 37%) in ethanol (363 g) was then added dropwise and stirred for 8 hours. After the end of the oligomerization, the solvent and alcohol formed in the hydrolysis were removed under reduced pressure. Add Marlosol (368g) and tetra-n-butyl titanate (0.5g) and heat to 140° C. for 1 hour to react. The ethanol formed was removed by distillation under reduced pressure. The bottom product (751 g, 94% of theory) was a viscous colorless liquid.
[0131] Density (20°C): 1.029g / cm 3
[0132] 13 C NMR: 78.6 mol% SiOEt, 21.4 mol% SiOR
[0133] 29 Si NMR: Propyltriethoxysilane), 60% M structure, 35% D structure, 4% T structure
[0134] GPC: Mn=757g / mol, Mw=1066, Mz=1417, PDI=1.4082
[0135] Alkyl polyether group -O-(R 5 -O) ...
Embodiment 3
[0137] by VP Si / Phenyltriethoxysilane ( 9265) / Marlosol(1:0.5:0.5)—0.8 equivalent water to prepare
[0138] VP Si (417g) and 9265 (210 g) was added to the stirring apparatus and heated to 88°C. A mixture of water (38 g) and concentrated HCl (0.3 g, 37%) in ethanol (363 g) was then added dropwise and the mixture was stirred for 6 hours. After the end of the oligomerization, the solvent and alcohol formed in the hydrolysis were removed under reduced pressure. Add Marlosol (368g) and tetra-n-butyl titanate (0.5g) and heat to 140° C. for 1 hour to react. The ethanol formed was removed by distillation under reduced pressure. The bottom product (797 g, 99% of theory) was a viscous, pale yellow liquid.
[0139] Density (20°C): 1.050g / cm 3
[0140] 29 Si NMR: 3% VP Si 1% 9265, 51% M structure, 37% D structure, 8% T structure
[0141] GPC: Mn=770g / mol, Mw=1013, Mz=1300, PDI=1.3156
[0142] Alkyl polyether group -O-(R 5 -O) m -R 6 Molar ratio to silicon = 0.33
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