Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1993-02-05
1996-01-09
Krass, Frederick
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525409, 528408, 528409, 564475, 564477, 560198, 560200, 560230, 568 62, 568623, 568624, 568625, 556410, 556412, 548461, 548462, C08G 6510, C08G 6526, C08G 6532
Patent
active
054830087
ABSTRACT:
The present invention relates to a bifunctional polyether having groups different from each other at both ends, with a polymerization degree of 5 to 10000 and consisting of repeating units each represented by the following formula (I): ##STR1## (wherein R.sub.1, represents a hydrogen atom, halogen atom, or a lower alkyl group optionally substituted by a halogen atom, and R.sub.1 in each repeating unit may be the same or different), as well as to a process for the preparation thereof and a polymerization initiator therefor. The process of production and polymerization initiator of the present invention enable 100% introduction of a primary amino group into one of the ends of polyether.
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Chemical Abstracts 108:205259, "Catalysts for the Preparation of Polymers with Terminal Amino Groups", Griehl et al.
Bougherara et al., 1993, "Synthese de Diamines Aromatiques Macromoleculaires a Basicite Controlee a Partir de Poly(tetramethylene glycol)", Makromol. Chem., Macromol. Chem. And Physics, 194:1225-1335. (English Summary on p. 1225).
Harris et al., 1984, "Synthesis and Characterization of Poly(ethylene Glycol) Derivatives", J. Polymer Sci., 22:341-352.
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Kataoka Kazunori
Kato Masao
Nagasaki Yukio
Ohsako Nobuyuki
Okano Teruo
Krass Frederick
Research Development Corporation of Japan
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