Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1989-07-11
1991-01-29
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528398, 528399, C08G 7902
Patent
active
049887912
ABSTRACT:
A novel phosphazene polymer having Schiff base structures is disclosed. The polymer is a condensation reaction product of a cyclic phosphonitrilic compound represented by the general formula (I): ##STR1## (wherein n is an integer 3 or 4, and 2n A's are independently selected from a group consisting of a formylphenoxy group, a phenoxy group, an alkylphenoxy group, a halogenated phenoxy group, an N-aromatic azomethine-phenoxy group, and a fluoroalkoxy group, provided more than 2 formylphenoxy groups being contained per molecule on the average) and a primary diamine or a primary polyamine, The polymer contains Schiff base bonds derived from formylphenoxy groups and amines and is represented by the formula: ##STR2## (wherein Z is a residual group said primary diamine or primary polyamine and may have bonds other than those indicated). The polymer exhibits a 20% or less weight loss under thermobalance analysis at 400.degree. C. and has a glass transition teperature (Tg) of 120.degree. C. or higher.
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Devendra Kumar, et al., Macromolecules 16 (8), pp. 1250-1257 (1983).
Harry R. Allcock, Paul E. Austin. Macromolecules 14 (6), pp. 1616-1622. (1981).
"Effect of Organic Side Group Structures on the Properties of Poly(organophosphazenes)". Allcock, H. et al., Macromolecules, 21 (2), p. 323-334, (1988).
Fujiwara Hiroshi
Ito Yoshiharu
Maruyama Isao
Shigematsu Hitoshi
Foelak Morton
Maruzen Petrochemical Co. Ltd.
Mosley T.
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