Patent · US Expired

Process for the production of di- and polyamines of the diphenylmethane series

US7435853B2 · kind B2 · utility

0Cited by

7References

7Claims

0Family size

Assignee

Bayer MaterialScience AG · DE

Inventors

Stefan Peter Grabowski · Neuss, DE
Markus Dugal · Kempen, DE
Aurel Wolf · Wülfrath, DE

Key dates

Filing date	Feb 9, 2006
Grant date	Oct 14, 2008
Priority date	—
Expiry date	Feb 15, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C211/55
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Di- and polyamines of the diphenylmethane series are produced by

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