Inventor

VAN PEE WILLY

DE5 patents

⚠️ This page may combine multiple inventors who share the name “VAN PEE WILLY”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BASF AG

4 patents

US6576788B1Jun 10, 2003

Method for producing mixtures consisting of diphenylmethane diisocyanates and polyphenylene-polymethylene-polyisocyanates containing a reduced amount of chlorinated secondary products and with a reduced iodine color index

BASF AG66 citations93

US5208368AMay 4, 1993

Preparation of mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates of reduced iodine color number

BASF AG36 citations92

US5207942AMay 4, 1993

Preparation of mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates having a reduced iodine color number

BASF AG18 citations71

US4294666AOct 13, 1981

Process for the manufacture of 4,4'-diphenyl-methane diisocyanate and a mixture of diphenyl-methane diisocyanate isomers containing a small amount of uretdiones and hydrolyzable chlorine

BASF AG16 citations67

BASF CORP

1 patent

US6229043B1May 8, 2001

Preparation of mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates having a reduced iodine color number and a reduced chlorine content

BASF CORP10 citations73