Polymerization of Methyl Methacrylate with tert-Butyl Hydroperoxide and Metal Acetylacetonates

1975 ◽  
Vol 8 (6) ◽  
pp. 935-939 ◽  
Author(s):  
C. J. Shahani ◽  
N. Indictor
Keyword(s):  
Methyl Methacrylate ◽  
Metal Acetylacetonates ◽  
Butyl Hydroperoxide ◽  
Tert Butyl ◽  
Tert Butyl Hydroperoxide

Polymerization of methyl methacrylate initiated by tert-butyl hydroperoxide-sulphuric acid-acetone system

1984 ◽  
Vol 49 (2) ◽  
pp. 404-409 ◽  
Author(s):  
Jiří Pavlinec ◽  
Milan Lazár
Keyword(s):  
Methyl Methacrylate ◽  
Sulphuric Acid ◽  
Water Concentration ◽  
Initial Reaction Rate ◽  
Polymerization Rate ◽  
Initial Reaction ◽  
Butyl Hydroperoxide ◽  
Tert Butyl ◽  
Hydroperoxide Decomposition ◽  
Tert Butyl Hydroperoxide

The radical polymerization of methyl methacrylate may be efficiently initiated by tert-butyl-hydroperoxide at 40°C and lower, deep below the temperatures of spontaneous hydroperoxide decomposition, when sulphuric acid simultaneously with ketones is used as the activator of peroxide decomposition. The initial reaction rate depends on concentration of initiator components, the exponents with regard to tert-butyl hydroperoxide, sulphuric acid and acetone being 0.25, 0.5 and 0.5, respectively. Water retards the hydroperoxide decomposition very efficiently and the polymerization rate is inversely proportional to the square root of water concentration in the system. Within the concentration range of hydroperoxide (1. 10-3 - 3. 10-2 mol dm-3), sulphuric acid 2.62 . 10-2 mol dm-3 and acetone 0.2 mol dm-3 the observed initial polymerization rate varies from 14.4%/hour to 34.5%/hour at 40°C. The concentration of water, introduced into the system by the polymerization components, was 0.05% in all cases. The activating effect of ketones upon the acid catalyzed hydroperoxide decomposition is accounted for by the formation of ketone-H2SO4 adduct that facilities the decomposition of hydroperoxide.

Tetrabutylammonium Iodide Catalyzed Synthesis of Allylic Ester with tert-Butyl Hydroperoxide as an Oxidant

2012 ◽  
Vol 14 (13) ◽  
pp. 3384-3387 ◽  
Author(s):  
Erbo Shi ◽  
Ying Shao ◽  
Shulin Chen ◽  
Huayou Hu ◽  
Zhaojun Liu ◽  
...  
Keyword(s):  
Butyl Hydroperoxide ◽  
Tert Butyl ◽  
Tert Butyl Hydroperoxide ◽  
Tetrabutylammonium Iodide
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