Polyurethane polyanhydride oligomers and method of preparation

Details Polyurethane polyanhydride oligomers and method of preparation Polyurethane polyanhydride oligomers and method of preparation

1990-04-05

1991-10-22

Marquis, Melvyn I.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525418, 525450, C08L 7504, C08L 7302

Patent

active

050596551

ABSTRACT:
A polyurethane polyanhydride oligomer is disclosed as well as a process for its preparation. The process involves the following steps:

REFERENCES:
patent: 4452948 (1984-06-01), Marrion et al.
patent: 4753998 (1988-06-01), Hayes et al.
patent: 4772666 (1988-09-01), Just et al.
patent: 4798745 (1989-01-01), Martz et al.
patent: 4798746 (1989-01-01), Claar et al.
patent: 4826921 (1989-05-01), Andrews et al.
Chemical abstract for Japanese patent application No. 74-2998 published by the Japanese Patent Office on Jan. 23, 1974.

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