Inventor

KRILL STEFFEN

DE83 patents

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

KRILL STEFFEN

DEGUSSA

Method for the production of trimethylhydroquinone

Process for the preparation of unsaturated 4,5-allene ketones, 3,5-diene ketones and the corresponding saturated ketones

Process for the preparation of 3,5,5-trimethylcyclohexa-3-en-1-one (β-isophorone) by isomerization of 3,5,5- trimethylcyclohexa-2-en-1-one (α-isophorone)

Process to produce α-tocopherol-acetate

Method of producing 3, 5, 5-trimethylcyclohexa-3-ene-1-one(β-isophorone) by the isomerization of 3, 5, 5-trimethylcyclohexa-2-ene-1-(α-isophorone)

Method of producing β-isophorone by the isomerization of α-isophorone

Method of producing ketoisophorone

Process for the preparation of 2,3,5-trimethyl-p-benzoquinone

Process for the production of trimethylhydroquinone diesters and of trimethylhydroquinone

Process for the production of 6-methylheptanone

Process for the production of 2,3,5-trimethylhydroquinone diesters

Process for the production of 6-methyl heptanone

Process for preparing esterified chroman compounds

Process for the preparation of nicotinic acid

Process for the production of α-tocopherol esters

Process for the preparation of 2,3,5-trimethy1-p-Benzoquinone

Process for the production of 2,3,5-trimethylhydroquinone diesters

Process for the preparation of 6-methylheptanone

ROEHM GMBH

Method for producing methylmethacrylate

Process for oxidative esterification of aldehydes to carboxylic acid esters

Method for producing alpha-hydroxycarboxylic acids and the esters thereof

Synthesis of methacrylic acid from methacrolein-based alkyl methacrylate

Catalyst for the oxidative esterification of aldehydes to carboxylic esters

Process for preparing MMA in high yields

Process for producing alkyl methacrylates and optionally methacrylic acid

Process for producing optical molding materials

Simplified workup of the reactor output from an oxidative esterification

Gold-based catalyst for oxidative esterification of aldehydes to carboxylic acid esters

Continuous process for preparing methacrolein

Concrete flow improvers and water reducers

EVONIK ROEHM GMBH

Method for producing methylmethacrylate

Method for producing methylmethacrylate

Extractive workup of a sodium-salt-containing MMA-methanol mixture

Method for carrying out a heterogeneously catalysed reaction

Preparation of N,N-(di)alkylaminoalkyl(meth)acrylamide or N,N-(di)alkylaminoalkyl (meth)acrylate and the quaternary ammonium salts thereof as flocculating aids and gelling agents

Glycerol (meth)acrylate carboxylic ester having a long shelf life

Method of regulating the water content in a continuous method for producing methacrolein

Optimized method for producing methacrolein

Recirculation and disposal of aqueous catalyst solutions in amine catalytic processes

KRILL STEFFEN

Method for producing methylmethacrylate

Process for preparing unsaturated esters proceeding from aldehydes by direct oxidative esterification

Process for producing methyl methacrylate

Method for producing methacrolein and the conditioning/draining thereof for direct oxidative esterification

Optimized process for preparing methacrylic acid

EVONIK OPERATIONS GMBH

Preparation of diesters of (meth)acrylic acid from epoxides

Glycerol (meth)acrylate carboxylic ester having a long shelf life

Method for preparing C-H acidic (meth)acrylates

Process for preparing N-methyl(meth)acrylamide

Process for preparing glycerol carbonate (meth)acrylate

LYGIN ALEXANDER

Gold-based catalyst for the oxidative esterification of aldehydes to obtain carboxylic esters