{"@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [{"@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.patentleaderboard.com/"}, {"@type": "ListItem", "position": 2, "name": "Process for dyeing textile materials of polyacrylonitrile: quaternized piperazine copolymer as basic dye retarder", "item": "https://www.patentleaderboard.com/patent/4488879"}]}
Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Process for dyeing textile materials of polyacrylonitrile: quaternized piperazine copolymer as basic dye retarder

Process for dyeing textile materials of polyacrylonitrile: quaternized piperazine copolymer as basic dye retarder

US Patent 4488879 · Granted Dec 18, 1984

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Preparation of condensates of arenesulfonic acids and formaldehyde and use there1996
Use of trialkanolamine polyethers as demulsifiers for oil-in-water emulsions1995
Modified melamine-formaldehyde resins1994
Methods of demulsifying employing condensates as demulsifiers for oil-in water e1993
Quaternized condensation products for aftertreating dyed leather1993
Anionically polymerized N-vinylformamide and the preparation thereof1992
Preparation of stable water-in-oil emulsions of hydrolyzed polymers of N-vinylam1992
Preparation of alpha-formylamino nitriles1991
Preparation of alpha-formylamino nitriles1991
Apparatus for testing fuel additives and oil additives1991
Glycerol aminocarboxylates and preparation and use thereof1991
Serine-N,N-diacetic acid and derivatives as complexing agents and detergents con1991