Preparation of high molecular weight polysuccinimides

Details Preparation of high molecular weight polysuccinimides Preparation of high molecular weight polysuccinimides

2006-05-30

2006-05-30

Solola, Taofiq (Department: 1626)

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

Synthetic resins

From carboxylic acid or derivative thereof

C548S546000

Reexamination Certificate

active

07053170

ABSTRACT:
Described are methods of production of polysuccinimides having molecular weights up to 200,000 daltons and higher. The polysuccinimides of the invention are essentially unbranched and uncrosslinked. They can be modified by crosslinking, ring-opening, and/or other functionalization, if desired, to form gelling materials of superior performance. The high Mw polysuccinimides are also particularly useful as thickening agents, viscosity modifiers, emollients, humectants and in other applications that are known in the art to be serviced most effectively by molecules of higher molecular weight.

REFERENCES:
patent: 5142062 (1992-08-01), Knebel et al.
patent: 5457176 (1995-10-01), Adler et al.
patent: 5856427 (1999-01-01), Chou
patent: 11240947 (1999-09-01), None
patent: 2001-302794 (2001-10-01), None

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