Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing
Patent
1993-10-25
1995-08-29
Shaver, Paul F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Silicon containing
422212, C07F 710
Patent
active
054461812
ABSTRACT:
The invention produces a 3-[N-(2-aminoethyl)]aminopropylalkoxysilane in high yields by reacting a 3-chloropropylalkoxysilane with ethylene diamine. A distillation pot is charged with ethylene diamine and heated above the boiling point of ethylene diamine for evaporating ethylene diamine, which is then condensed into a liquid. The liquid ethylene diamine is mixed for reaction with a 3-chloropropylalkoxysilane in such a proportion to give a molar ratio of ethylene diamine/3-chloropropylalkoxysilane of at least 12/1, thereby forming a 3-[N-(2-aminoethyl)]aminopropylalkoxysilane. The reaction solution is fed back to the pot where the unreacted ethylene diamine in the reaction solution is evaporated again and then condensed for use in a next cycle of reaction. The apparatus includes a distillation pot, a reflux condenser, a feed means and a reactor connected to form a recirculating system.
REFERENCES:
patent: 2971864 (1961-02-01), Speier
patent: 3317577 (1967-05-01), Ryan
patent: 4127872 (1978-11-01), Lo
Chemical Abstracts, vol. 119, No. 23, 250165r, Dec. 6, 1993.
Arai Takeo
Araki Hitoyuki
Endo Mikio
Kawase Yasuhiro
Uehara Katsuhiro
Shaver Paul F.
Shin-Etsu Chemical Co. , Ltd.
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