Inventor
ECHTERHOFF RALF
DE2 patents
Patents
2 patentsUS7038002B2May 2, 2006
Production of mixtures of diisocyanates and polyisocyanates from the diphenylmethane series with high contents of 4,4′-methylenediphenyl diisocyanate and 2,4′-methylenediphenyl diisocyanate
BAYER MATERIALSCIENCE AG9 citations68
US7205430B2Apr 17, 2007
Production of di- and polyisocyanates of the diphenylmethane series with defined acidity
BAYER MATERIALSCIENCE AG0 citations35