Inventor

ENGELHARDT FRIEDRICH

DE58 patents

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

ENGELHARDT FRIEDRICH

CASSELLA FARBWERKE MAINKUR AG

Hydrophilic, highly swellable hydrogels

Water-soluble copolymer of acrylamidomethylpropanesulfonic acids salts

Hydrophilic, swellable graft polymers

Water-soluble copolymer and its preparation

Water-soluble branched polyesters

Cross-linkable and cross linked macromolecular compositions wherein cross-linking is by structural bridges of the formula --NRx --CH═N--CO-- and their preparation

Water soluble copolymers for use in fracture-acidizing of wells

Process for the preparation of copolymers

Hydrophilic swellable graft polymers from maleic anhydride-alkylene substrate

Alkenylphosphonic and --phosphinic acid esters, process for their preparation, hydrogels produced using them, and their use

Phosphonic acid cross-linked hydrophilic copolymers

Metal chelates of water soluble copolymers

Hydrophilic, swellable polymers

Agent and method for deoiling sand and rock masses

Alkenylphosphonic and -phosphinic acid esters, process for their preparation, hydrogels produced using them, and their use

Water-soluble polycoesters, process for their preparation, and their use

Use of hydrocarbon-rich gels as fracturing fluids

Water-soluble copolymers with pendant phosphonic, sulphonic and amide groups

Polyester which is soluble or dispersible in water, a process for its preparation and its use as a levelling auxiliary, levelling auxiliaries and processes for uniform dyeing

Process for the preparation of a hydrogel which is largely free from monomers

Water-dispersible polyester, its preparation, and its use as a hydrophiling agent

Padding auxiliaries and processes for dyeing cellulose fibers or mixtures of cellulose fibers and synthetic fibers with sulphur dyestuffs, sulphur vat dyestuffs, vat dyestuffs and reactive dyestuffs

Process for the preparation of crosslinked copolymers, the process products obtained, and their use in textile printing

Water soluble copolymers

High molecular weight water-soluble polymers useful in deoiling sand and rock masses

Water soluble, crosslinkable polymer compositions, their preparation and use

Dyeing of mixed fibers

Hydrophilic, swellable polymers

Hydrophilic, swellable polymers

HOECHST AG

Use of cross-linked polymers to increase the viscosity in cosmetic, pharmaceutical and technical compositions

Aqueous clay base mud for deep drilling

Process for the preparation of copolymers of vinylphosphonic acid and (meth) acrylic acid in aqueous solution

Hair-treating agents from branched, sulfo-group containing copolyesters

Cement slurries for deep holes, with a copolymer content for reducing the water loss

Process for the preparation of polymers of vinylphosphonic acid in protic solvents

Process for the level dyeing of synthetic fiber materials

Drag reducing agents

Modified polyvinyl alcohol and its use as a sizing agent

CASSELLA AG

Hydrophilic swellable graft copolymers, their preparation and use

Process for modifying hydrophilic polymers

Hydrophilic, swellable graft copolymers, their preparation and use

Formulation for brightening synthetic fibers and its preparation and use

Levelling agent and process for the even dyeing of materials made of synthetic fibers

BASF AG

Mechanically stable hydrogel-forming polymers

Hydrophilic hydrogels with a high swelling capacity and method for producing and using them

Polymer mixtures with improved odor control

Plasticized superabsorbent polymer sheets and use thereof in hygienic articles

ENGELHARDT FRIEDRICH

Stabilized aqueous polymer compositions and their use

ALLESSA CHEMIE GMBH

Stabilized aqueous polymer compositions

DANIEL THOMAS

Hydrogels absorbing aqueous fluids