Nonisocyanate polyurethane materials, and their preparation...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

Reexamination Certificate

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Details

C525S327200, C525S383000, C525S540000, C528S422000, C528S480000, C528S483000

Reexamination Certificate

active

07045577

ABSTRACT:
Novel carbonated vegetable oils (such as carbonated soybean oil) are made by reacting carbon dioxide with an epoxidized vegetable oil. The carbonated vegetable oils advantageously may be used for producing nonisocyanate polyurethane materials.

REFERENCES:
patent: 3072613 (1963-01-01), Whelan, Jr. et al
patent: 5175231 (1992-12-01), Rappoport et al.
patent: 5344897 (1994-09-01), Brindoepke et al.
patent: 6218480 (2001-04-01), Rappoport
patent: 6471843 (2002-10-01), December et al.

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