Inventor

PFAHLER GERHARD

50 patents

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

PFAHLER GERHARD

HOECHST AG

Process for reducing the discoloration of a plastic molding composition at the processing temperature

Ethers based on polyalkyl-1-oxadiazaspirodecanes

Triazine derivatives

Substituted diazaspirodecanes, their preparation and their use as stabilizers for organic polymers, and the polymers thus stabilized

Additive mixture having a nucleating action for plastics compositions

Polymeric polyalkyl-1-oxa-diazaspirodecanes

Polyvinyl butyrals having improved thermal stability and light resistance

Triazine stabilizers

Copolymers of substituted piperidines, their manufacture and use

Derivatives of 1-oxa-3,8-diaza-spiro-[4,5]-decanes

Polytriazinylamines, process for their preparation

High-molecular esters and urethanes containing piperidine groups, a process for their preparation

Poly-bis-triazinylaminotriazinylamines, their preparation and their use as light stabilizers for plastics, and plastics which have been stabilized with them

Triazylaminotriazines, their preparation and their use for stabilizing synthetic polymers

N-substituted triaza-adamantanyl ureas as stabilizers for thermoplastic materials

1-Oxa-4,8-diazaspiro[4,5]decanes and polymers stabilized against UV light with these compounds

Aza-adamantane compound stabilizers for organic polymer compositions

6-aryl-6H-dibenzo[c,e][1,2]oxaphosphorine stabilizers for plastics

Aryl phosphonites, a process for their production and their use for stabilizing plastics

Process for the preparation of organophosphorus derivatives of 2,4-di-tert-butylphenol, of 4,4&#39;-dihalomagnesium compounds of biphenyl and the use of the organophosphorus derivatives for the stabilization of polyolefin molding

Epoxide resins containing phenol groups, their manufacture and their use

Cyclic phosphites of sugar alcohols and polymers stabilized therewith

Phosphites of sugar alcohols and polymers stabilized therewith

Alkylated diaza-spirodecanes

Novel organo-tin compounds and their use as stabilizers

Poly-bis-triazinylimides, their preparation

Substituted piperidine hydroxamides, their preparation, and their use as light stabilizers

Phosphites of polyalcohols

Urea derivatives, their preparation, and their use as light stabilizers

Bis-(alkylphenyl)-alkanecarboxylic acid hydrazides, their preparation and use

Substituted tetraalkylpiperidone-4-oximes

14-Substituted 7,15-diazadispiro- 5.1.5.3!-hexadecanes as UV stabilizers

Novel phenolic antioxidants, their preparation and their use

Diarylphosphinous acid aryl esters, a process for their preparation and their use for stabilizing plastics

Novel polyalkyl-piperidine polymers, their preparation and use

Glycerol phosphites esterified with phenolcarboxylic acids

Plastic with reduced sulfur uptake rate

Process for the preparation a bis(3,3-bis(4-hydroxyalkylphenyl)butanoic acid)diol ester

Light-stable polyphenylene ether molding composition with an antistatic finish

Substituted triazaadmantane compounds

Acetoacetic acid pentaerythrite phosphite ester

CLARIANT GMBH

Synergistic stabilizer mixture based on polyalkyl-1-oxa-diazaspirodecane compounds

Compounds based on polyalkyl-1-oxadiazaspirodecane compounds

Oligomeric stabilizer mixture

Light stabilizers based on sterically hindered amines

Process for the preparation of hyrolysis-stable trivalent phosphorus compounds and their use as stabilizers for thermoplastics

Storage-stable plastics additives

Polyolefin molding compound for producing calendered films/sheets

WIEZER HARTMUT

Polytriazinyl alcohols, esters and urethanes, a process for their preparation

(unassigned)

Process for preparing the crystal modification of 2,2&#39;,2&#34;-nitrilo triethyl tris(3,3&#39;,5,5&#39;-tetra-tert-butyl-1,1&#39;-biphenyl-2,2&#39;-diyl)phosphite!

Process for the preparation of organophosphorus derivatives of 2,4-di-tert-butylphenol, of 4,4'-dihalomagnesium compounds of biphenyl and the use of the organophosphorus derivatives for the stabilization of polyolefin molding

Process for preparing the crystal modification of 2,2',2"-nitrilo triethyl tris(3,3',5,5'-tetra-tert-butyl-1,1'-biphenyl-2,2'-diyl)phosphite!