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US 6,387,187 B2Granted
Decontamination of isocyanate fouled materials
AssigneeHuntsman Petrochemical Corporation
InventorJames A. Yavorsky
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Abstract
The invention relates to compositions having an alkylene carbonate and a primary hydroxyl functional capping agent selected from the group consisting of methoxypolyoxyethylene monol, polyoxyethylene-polyoxypropylene monol, and mixtures thereof for treating materials fouled with isocyanate. The invention also relates to decontamination of materials fouled with isocyanate, and to methods for decontamination of solvent fouled with isocyanate.
Claims6
A method for decontamination of a material fouled with isocyanate comprising:
- treating the material with a solvent blend to extract isocyanate from the material into the solvent blend;
- the solvent blend including alkylene carbonate and a primary OH functional capping agent selected from the group consisting of methoxypolyoxyethylene monol, polyoxyethylene-polyoxypropylene monol, and mixtures thereof to extract substantially all of the isocyanate from the material into the solvent blend;
- and
- removing the solvent blend.
1 more element
Dependencies are inferred from the claim text.