Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Preparation of propanediols using a copper-and zinc containing hydrogenation catalyst

Preparation of propanediols using a copper-and zinc containing hydrogenation catalyst

US Patent 4393251 · Granted Jul 12, 1983

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Catalysts containing copper and zinc for the purification of ethylene2008
Selective liquid-phase hydrogenation of &agr;,&bgr;-unsaturated carbonyl compoun2002
Preparation of alcohols2001
Polyisocyanate compositions having a long shelf life and obtainable by phosgene-1998
Process and catalyst for the selective hydrogenation of butynediol to butenediol1998
Carbonylation of olefins1998
Preparation of higher aldehydes1997
Thermal cleavage of carbamic esters1997
Preparation of 2-substituted but-2-ene-1,4-dial-4-acetals and novel hemiacetals 1996
Preparation of 2-substituted but-2-ene-1, 4-dial-4-acetals and novel hemiacetals1996
2,2-dialkylpentane 1,5-diisocyanates, 2,2-dialkylpentane 1,5-diurethanes and 2,21996
Preparation of 2-methyl-1,4-butanediol and 3-methyltetrahydrofuran1996