Urea-modified carbodiimide and process for production thereof

Details Urea-modified carbodiimide and process for production thereof Urea-modified carbodiimide and process for production thereof

1995-06-27

1997-06-10

Kumar, Shailendra

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564 47, 564 56, 564 57, 564 58, 564252, C07C27506, C07C26700

Patent

active

056377690

ABSTRACT:
The present invention provides: a urea-modified carbodiimide represented by the following general formula ##STR1## (wherein each R is a C.sub.1 -C.sub.12 alkyl group or a C.sub.3 -C.sub.10 cycloalkyl group; each Z is a C.sub.1 -C.sub.12 alkylene group, a C.sub.3 -C.sub.10 cycloalkylene group, a C.sub.4 -C.sub.16 alkylene group having a cyclic or non-cyclic structure, or a C.sub.8 -C.sub.16 alkylene group having an aromatic ring; n is an integer of 1-50; and each m is an integer of 1 or 2), and a process for producing the above urea-modified carbodiimide, which comprises (1) reacting an organic aliphatic diisocyanate represented by the following general formula

REFERENCES:
patent: 4611083 (1986-09-01), Buethe et al.
patent: 5079326 (1992-01-01), Suzuki et al.

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