Prepolymers

Details Prepolymers Prepolymers

2011-04-12

2011-04-12

Cano, Milton I (Department: 1763)

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

Organic compounds

Carboxylic acid esters

C528S061000, C528S078000, C528S059000, C564S044000, C564S045000, C560S025000, C560S026000, C560S158000

Reexamination Certificate

active

07923574

ABSTRACT:
The invention relates to novel prepolymers which are accessible from the formamides of oligomeric di- or polyamines (formamide-terminated oligomers) and di- or polyisocyanates.

REFERENCES:
patent: 4028310 (1977-06-01), Schäfer et al.
patent: 4282330 (1981-08-01), Austin
patent: 2002/0123596 (2002-09-01), Gurtler et al.
patent: 2436740 (1976-02-01), None
patent: 10110437 (2002-09-01), None

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