Patent · US Active

Process for fractionating a mixture of polyisocyanates

US8496834B2 · kind B2 · utility

0Cited by

9References

19Claims

0Family size

Assignee

HUNTSMAN INTERNATIONAL LLC · US

Inventors

Robert Henry Carr · Oud-Heverlee, BE
Rabah Mouazer · Wavre, BE
Ivo Vankelecom · Ternat, BE
Angels Cano Odena · Leuven, BE

Key dates

Filing date	Sep 2, 2008
Grant date	Jul 30, 2013
Priority date	—
Expiry date	Apr 24, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/7843
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Method of fractionating a mixture of polyisocyanates in the liquid phase, optionally in the presence of a suitable solvent or mixture of two or more solvents, by means of a selectively permeable membrane into a permeate stream and a retentate stream of polyisocyanate compositions different to each other and different to the original mixture.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.