Patent · US Active

Process for simultaneously preparing 4,4′-diphenylmethanediamine and diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanates

US7709679B2 · kind B2 · utility

0Cited by

3References

15Claims

0Family size

Assignee

BASF SE

Inventors

Michael Bock · Ruppertsberg, DE
Hans-Juergen Pallasch · Ludwigshafen, DE
Filip Deberdt · Bonheiden, BE
Johnny Moors · Ekeren, BE

Key dates

Filing date	Jan 12, 2007
Grant date	May 4, 2010
Priority date	—
Expiry date	Jan 12, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C263/10
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention provides a process for the simultaneous preparation of 4,4′-diphenylmethanediamine and also diphenylmethane diisocyanate and polyphenylenepolymethylene polyisocyanates, which comprises the steps

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