Inventor

KOHLSTRUK STEPHAN

DE50 patents

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

KOHLSTRUK STEPHAN

DEGUSSA

Catalyst and process for preparing color-reduced polyisocyanates containing isocyanurate groups

Method for synthesis of aliphatic isocyanates from aromatic isocyanates

Catalyst and process for preparing color-reduced polyisocyanates containing isocyanurate groups

Catalyst and process for preparing color-reduced polyisocyanates containing isocyanurate groups

Process for preparing low-odor and storage-stable monomer-containing polyisocyanurates from isophorone diisocyanate

Catalyst and process for preparing low-viscosity and color-reduced polyisocyanates containing isocyanurate groups

Dispersions of amorphous unsaturated polyester resins based on particular Dicidol isomers

Catalyst and process for preparing low-viscosity and color-reduced polyisocyanates containing isocyanurate groups

Solid polyurethane hardeners having triazine groups, processes for preparing such compounds, and their use

Preparation of low-odor-storage-stable monomer-containing polyisocyanurates based on isophorone diisocyante

Stable 1:1 monoadducts of secondary aminoalkylalkoxy-silanes and diisocyanates and a process for preparing them

Multistage continuous preparation of cycloaliphatic disocyanates

Multistage continuous preparation of cycloaliphatic diisocyanates

Multistage continuous preparation of cycloaliphatic diisocyanates

Multistage continuous preparation of cycloaliphatic diisocyanates

Multistage continuous preparation of cycloaliphatic diisocyanates

Multistage continuous preparation of cycloaliphatic diisocyanates

1,4-Diisocyanato-2,2,6-trimethylcyclohexane polyisocyanates containing isocyanurate groups, a process for the preparation and use

Low monomer 1:1-monoadducts from hydroxy (meth) acrylates and diisocyanates and a process for their manufacture

Catalysts for preparing polyisocyanates containing isocyanurate groups, and their use

EVONIK DEGUSSA GMBH

Epoxy resin composition comprising 2-(3-(aminomethyl)-3,5,5-trimethylcyclohexyl)propane-1,3-diamine (AM-CPDA) as hardener

Epoxy resin composition comprising 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine as hardener

Hardener composition including 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine

2-(3-(aminomethyl)-3,5,5-trimethylcyclohexyl)propane-1,3-diamine, a process for its production and use

Process for producing 2-(2,2,6,6-tetramethylpiperidin-4-yl)propane-1,3-diamine

2-(3,3,5-trimethylcyclohexyl)propane-1,3-diamine, a process for its production and use

Process for preparing 3 aminomethyl-3,5,5-trimethylcyclohexylamine

Catalytic oxidation of 3,5,5-trimethylcyclohexa-3-ene-1-one (β-isophorone) with hydrogen peroxide to afford 2,6,6-trimethyl-2-cyclohexene-1,4-dione (keto-isophorone)

Process for preparing isocyanates containing alkoxysilane groups

Process for preparing isocyanates containing alkoxysilane groups

Process for preparing isocyanates containing alkoxysilane groups

2-(3-(aminomethyl)-3,5,5-trimethylcyclohexyl)propane-1,3-diamine, a process for its production and use

Process for preparing amino compounds from nitrile compounds

Process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine

Coupling of distillative purification with a partial condenser for pre-purification of isophoronediamine

NITZ JOERG-JOACHIM

Fine purification of isophoronenitrile by melt crystallization

Process for removing cations from an isophoronenitrile product mixture

Hydrolysis of the residues obtained in the production of isophorone to recover isophorone and acetone

HUELS CHEMISCHE WERKE AG

Process for preparing a reduced-color isocyanurate-functional polyisocyanate prepared from 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane (IPDI)

Two-component (PU) polyurethane coating composition with high environmental and mechanical resistance

PRIDOEHL MARKUS

Multicolour extrusion-based 3D print process

Multicolored fused deposition modelling print

KOHLSTRUK STEPHAN

Polyolefin graft poly(meth)acrylate copolymer-based adhesion promoter for coating polyolefin surfaces

Polyolefin graft poly(meth)acrylate copolymer-based priming agent for polyolefin surfaces

SPYROU EMMANOUIL

Low monomer 1 : 1 monoadducts of reactive olefinic compounds and diisocyanates using insertable inhibitors

Method for producing 1:1 adducts having a low monomer content from hydroxyalkyl(meth)acrylates and diisocyanates

EVONIK OPERATIONS GMBH

Process for preparing isocyanates containing alkoxysilane groups

SCHMITT GUENTER

Composite semifinished products, molded parts produced therefrom, and molded parts produced directly based on hydroxy-functionalized (meth)acrylates, which are cross-linked by means of uretdiones in a thermosetting manner

MICHALCZAK HANS-WERNER

Process for the continuous preparation of (cyclo)aliphatic diisocyanates

GRUND GERDA

Low chlorine, multi-staged method for producing cycloaliphatic disocyanates