Inventor

SCHAFFER ORTWIN

DE19 patents

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

SCHAFFER ORTWIN

BASF AG

Condensation polymers of sulfonated phenols, urea, other organic nitrogen-bases, and formaldehyde, and their use as tanning agents and as spraying aids for redispersible polymer powders

Copolymers based on long-chain olefins and ethylenically unsaturated dicarboxylic anhydrides for rendering leathers and skins water-repellent

Copolymers based on long-chain unsaturated esters and ethylenically unsaturated carboxylic acids for making leather and furs water repellent

Substituted sulfobenzene and triazine-containing reactive dyes

Self-tanning, pretanning and assist tanning of pelts and skin pelts and retanning of leather and skin

Use of copolymers based on long-chain alkyl vinyl ethers and ethylenically unsaturated dicarboxylic anhydrides for rendering leathers and skins water-repellent

Polyazo dyes with diazo components of the aminophenol and the amino diphenyl-sulfide, -sulfoxide or -sulfone series

Tanning assistant

Reactive azo dyes with a coupler of the aminonaphthalene series

Products of the condensation of phenolmonosulfonic acids, dihydroxydiphenyl sulfones, urea and formaldehyde

Dyeing of leather with pigments

Pyridone compounds and the preparation of disulfonated pyridone compounds

Amino benzophenone dye

Fluent polyazo dye preparations and method of dying leather or wool therewith

Quaternized condensation products for aftertreating dyed leather

Condensates of bis-(4-hydroxyphenyl) sulfone as tanning assistants, their preparation and use in the tanning of leather

Reactive dyes containing substituted 4-fluoropyridaz-6-one radicals

Deliming of hides and use of cyclic esters of sulfurous acid as deliming agents

SCHAFFER ORTWIN

Dye powder formulation