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Inventor: Clausen; Martin
Address: Zurich, CH
No. of patents: 3
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5041634 |
Process for the preparation of carboxylated aromatic hydroxy compounds |
August 20, 1991 |
| Process for the preparation of compounds of the formula HO-Ar-COOH in which Ar is a substituted or unsubstituted aromatic ring system, by oxidizing, by means of oxygen or compounds which donate oxygen, compounds of the formula HO-Ar-R.sub.1 in which R.sub.1 is alkyl having 1 to 5 carbon |
| 4929771 |
Process for the preparation of alkyl-substituted phenols or naphthols |
May 29, 1990 |
| Process for the preparation of alkyl-substituted phenols or naphthols by oxidizing the corresponding dialkylbenzenes or dialkylnaphthalenes, respectively, at elevated temperatures of, for example, 70.degree. to 130.degree. C. by means of oxygen or oxygen donors, in the absence of sol |
| 4861920 |
Process for the preparation of 2,6-dihydroxynaphthalene |
August 29, 1989 |
| Process for the preparation of 2,6-dihydroxynaphthalene from 2,6-dialkylnaphthalenes, which are dissolved in an inert solvent and are oxidized at temperatures from 50.degree. to 150.degree. C. by means of oxygen or oxygen donors, in the presence of an alkali metal salt or alkaline ea |
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