Inventor

WALDMANN HELMUT

DE67 patents

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

WALDMANN HELMUT

BAYER AG

Process for converting plastic waste into power

Process for working up reaction gases during the oxidation HCI to chlorine

Treating effluent with peroxide and iron

Hydrogen peroxide treatment of effluent

Catalyst for the preparation of aniline

Pump for delivering hot, corrosive media

Process for the purification of epoxides

Process for the preparation of carbonic acid esters

Process for the preparation of propylene oxide

Process for the preparation of a mixture of cyclohexylamine and dicyclohexylamine using a supported noble metal catalyst

Polycarbonate from special dihydroxydiphenyl bicycloalkane

Process for the preparation of diphenylamines

Process for the hydroxylation of phenol

Process for the hydroxylation of phenol

Process for the hydroxylation of phenols and phenol ethers in the nucleus

Process for preparing aldehydes from olefins

Process for the preparation of dialky carbonates

Process for preparing dimethyl carbonate

Process for the preparation of dialkyl carbonates

Process for the production of substituted polyaryl ethers

Process for the production of urethanes

Preparation of ε-caprolactone

Process for the preparation of propylene oxide

Process for the preparation of substituted cycloalkylidene bisphenols

Process for the regeneration of catalysts for the gas-phase reduction of aromatic nitro compounds

Process for the preparation of polyhydric phenols

Process for the preparation of 2-methyl-2,4-diaminopentane

Process for the preparation of 1,4-bis(aminomethyl) cyclohexane

Process for the preparation of 1-butene-3,4-diol

Process for the dechlorination of chlorinated aromatic compounds

Process for the preparation of acylbenzenes

Palladium catalyst and its use in the preparation of a mixture of optionally substituted cyclohexylamine and optionally substituted dicyclohexylamine

Special dihydroxydiphenyl bicycloalkanes, their production and their use for the production of high molecular weight polycarbonates

Process for the production of di-(4-aminocyclohexyl)-methane containing 15 to 25% by weight of the trans-trans isomer

Process for the preparation of n-alkylated aromatic amines

Process for the preparation of polyhydric phenols

Process for the preparation of polyhydric phenols

Process for preparing aldehydes

Production of ω-formyl carboxylic acid esters

Process for preparing aldehydes from oxirane compounds

Process for preparing 4,4&#39;-dinitrostilbene-2,2&#39;-disulphonic acid and its salts

Catalytic oxidation

Process for the production of urethanes

Process for the preparation of hexahydrophthalic acid anhydride

Process for the continuous preparation of percarboxylic acids in organic solutions

Method and device for delivering hot, aggressive media

DEGUSSA

Stabilizing caprolactones with dihydroxybenzenes

Process for the preparation of perpropionic acid solutions

Process for the preparation of perpropionic acid solutions

Process for the preparation of percarboxylic acid solutions

Process for preparing 4,4'-dinitrostilbene-2,2'-disulphonic acid and its salts