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Exploration of the difference of reaction rates for polyester and polyether urethane prepolymers with 3,3′-dichloro-4,4′-diaminodiphenylmethane

✍ Scribed by Luo Xiaolie; Liu Jin; Ma Dezhu


Book ID
101586909
Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
420 KB
Volume
57
Category
Article
ISSN
0021-8995

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Direct ab initio dynamic calculations are performed on the reactions of atomic hydrogen with GeD(n)(CH(3))(4-n) (n = 1-4) over the temperature range 200-2000 K at the PMP4SDTQ/6-311 +G(3df,2p)//MP2/6-31 +G(d) (for n = 2-4) and G2//MP2/6-31 +G(d) (for n = 1) levels. The corresponding k(H)/k(D) ratios

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Absolute rate constants for the reaction of SiH4 with O(3P) atoms and OH radicals have been determined over the temperature range 297"438'K using flash photolysis-NO:! chemiluminescence and flash photolysis-resonance fluorescence techniques, respectively. The Arrhenius expressions obtained are wher

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