Storage-stable, liquid polyisocyanates possessing carbodiimide g

Details Storage-stable, liquid polyisocyanates possessing carbodiimide g Storage-stable, liquid polyisocyanates possessing carbodiimide g

1977-01-28

1978-10-17

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260453A, 260453AR, 260453AM, 260453AL, C07C119055

Patent

active

041208846

ABSTRACT:
Storage-stable, liquid, only slightly colored polyisocyanates possessing carbodiimide groups and having an isocyanate content of from about 25 to 35% by weight, based on total weight; these products are obtained by condensing polyisocyanates in the presence of phospholines, phospholidines and/or their oxides, and stopping the condensation and stabilizing the condensation products with the Lewis acids, aromatic carboxylic acid halides, aromatic sulfonic acid esters and/or alkyl sulfates.

REFERENCES:
patent: 4014935 (1977-03-01), Ibbotson

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