Low temperature active aliphatic aromatic polycarbodiimides

Details Low temperature active aliphatic aromatic polycarbodiimides Low temperature active aliphatic aromatic polycarbodiimides

1990-03-23

1991-04-16

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

525123, 564952, C08F 830

Patent

active

050083635

ABSTRACT:
A mixed aliphatic/aromatic polycarbodiimide prepared by first polymerizing an aliphatic isocyanate or mixture thereof, optionally in the presence of a polyfunctional isocyanate; arresting polymer chain growth by reaction with a stoichiometrically deficient amount of a monofunctional isocyanate-reactive compound, followed by further polymerization with an aromatic diisocyanate.

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Campbell, T. W. et al., J. Organic Chemistry, vol. 28, pp. 2069-2075 (1963).
A New Method of Forming Peptide Bonds, Communications to the Editor, J. Chem. Soc., John C. Sheehan, Feb. 20, 1955, vol. 77, pp. 1067-1068.
High Polymers Containing the Carbodiimide Repeat Units, J. Organ. Chem., Campbell and Smeltz, Aug. 1963, vol. 28, pp. 2069-2075.
Carbodiimide Chemistry: Recent Advances, Chem. Rev., Williams & Ibrahim, 1981, vol. 81, pp. 589-636.

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