Preparation of oligomeric cyclocarbonates and their use in...

Details Preparation of oligomeric cyclocarbonates and their use in... Preparation of oligomeric cyclocarbonates and their use in...

2007-06-19

2007-06-19

Boykin, Terressa (Department: 1711)

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

C521S155000, C521S178000, C528S198000, C528S421000

Reexamination Certificate

active

10491268

ABSTRACT:
A method and apparatus for synthesis of oligomeric cyclocarbonates from epoxy compounds and carbon dioxide in the presence of a catalyst. Star epoxy compounds and their preparation and use in making star cyclocarbonates, star hydroxy urethane oligomers, and star NIPU and HNIPU. Acrylic epoxy compounds, acrylic cyclocarbonates, acrylic hydroxy urethane oligomers, and acrylic NIPU and HNIPU and their methods of preparation.

REFERENCES:
patent: 1417883 (1922-05-01), Beers
patent: 5175231 (1992-12-01), Rappoport et al.
patent: 5506363 (1996-04-01), Grate et al.
patent: 5786435 (1998-07-01), Marutani et al.
patent: 6120905 (2000-09-01), Figovsky
patent: 2001/0008924 (2001-07-01), Rappoport
patent: 05202022 (1993-08-01), None

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