Inventor

HELFERT HERBERT

DE18 patents

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

HELFERT HERBERT

BASF AG

Dyeing process using quaternary ammonium salt as retarder

Solid cold bleach activators for detergents and cleaning agents containing an active oxygen donor

Method for obtaining pure n-vinyl pyrrolidone

Purification of N-vinylpyrrolidone by crystallization

Lubricants for shaping polyvinyl chloride, which contain esterified oligomeric polyhydric alcohols

Cyclic acetals

Removal of oligomer deposits from textile materials

Quaternary ammonium salts

Process for suppressing the foaming of detergents

Preparation of monovinyl ethers

Binding chemical impurities contained in crude N-vinylpyrrolid-2-one

Production of level dyeings on acrylonitrile polymer fibers with basic dyes

Prevention of spontaneous decomposition of gaseous acetylene

Method for processing pyrollidone and n-vinyl pyrollidone residues

Surfactants containing iodine

BASF WYANDOTTE CORP

Linear polyalkylene ether glycols of high molecular weight

Highly branched polyether polyols of high molecular weight

Polyether polyols and method of preparing same