Patents by Inventor Harald Oertel
Harald Oertel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 4297446Abstract: ABS-moulding compositions of (a) 5 to 70% by weight of one or more graft products and (b) 95 to 30% by weight of one or more thermoplastic resins with a content of 0.05 to 2.0% by weight (based on total mixture) of a silico urethane derivative to improve notched impact strength.Type: GrantFiled: August 24, 1979Date of Patent: October 27, 1981Assignee: Bayer AktiengesellschaftInventors: Christian Lindner, Karl-Heinz Ott, Bernhard Arnold, Friedrich Kowitz, Harald Oertel, Dieter Kuhlmann
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Patent number: 4223147Abstract: The invention relates to new methylol derivatives of 2,2,6,6-tetraalkylpiperidines, to their production and to their use as chemically attached stabilizers for polymers containing reactive OH- and NH-groups.Type: GrantFiled: September 19, 1977Date of Patent: September 16, 1980Assignee: Bayer AktiengesellschaftInventors: Harald Oertel, Paul Uhrhan, Reinhard Lantzsch, Ernst Roos, Hans Schroer, Dieter Arlt
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Patent number: 4211699Abstract: Isocyanate adduct diols of the formulaM--CO--NH--D'--NH--CO--Ain which M is derived from an amino diol or a hydrazino diol, D' represents the divalent radical of an organic diisocyanate, and A is an isocyanate masking group; and a process for their production.Type: GrantFiled: February 21, 1978Date of Patent: July 8, 1980Assignee: Bayer AktiengesellschaftInventors: Hans D. Winkelmann, Karlheinz Wolf, Harald Oertel, Norbert Weimann
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Patent number: 4178279Abstract: The invention is related to modified polyurethanes which have a permanent, wash-fast, acidresistant, dry cleaning-resistant and solvent-resistant stabilization based on 2,2,6,6-tetraalkyl-piperidine light protective agents. These stabilizers are an integral constituent of the polyurethanes, that is to say they take part in the polyurethane synthesis by the reaction of an H-active reactive group (for example NH.sub.2, NH-alkyl, CO--NH--NH.sub.2, NH--CO--NH--NH.sub.2, OH or some other H-active group) of the 2,2,6,6-tetraalkyl-piperidine derivatives with isocyanate groups of polyisocyanates or isocyanate prepolymers.Type: GrantFiled: September 19, 1977Date of Patent: December 11, 1979Assignee: Bayer AktiengesellschaftInventors: Paul Uhrhan, Harald Oertel, Reinhard Lantzsch, Ernst Roos, Dieter Arlt
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Patent number: 4153775Abstract: Process for the production of solutions of segmented self-crosslinkable polyurethanes by incorporating in the polymer chain segments of the general formulaM--CO--NH--D'--NH--CO--A,wherein D' is the divalent residue of an organic diisocyanate; M is a diol containing residue derived by reaction of the active N-hydrogen of an aminodiol or a hydrazinodiol which contains a primary or secondary amino group, with an isocyanate group; and A is an isocyanate masking group.Type: GrantFiled: February 21, 1978Date of Patent: May 8, 1979Assignee: Bayer AktiengesellschaftInventors: Hans D. Winkelmann, Karlheinz Wolf, Harald Oertel, Norbert Weimann
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Patent number: 4153596Abstract: This invention relates to permanently stabilized polymers containing substituted piperidine derivatives chemically attached to the polymer molecule through O- or N-atoms. Compounds based on 2,2,6,6-tetraalkyl piperidines have now been found which, on the one hand, have a very high stabilizing activity and, on the other hand, contain one or more reactive groups through which they are able to react with the polymers to be stabilized. Stabilized polymers, preferably polyurethane elastomer filaments, films and coatings with a permanent washing-resistant, boiling resistant, acid-resistant, dry-cleaning-resistant and solvent-resistant stabilization based on 2,2,6,6-tetraalkyl piperidine light stabilizers are thus obtained.Type: GrantFiled: September 19, 1977Date of Patent: May 8, 1979Assignee: Bayer AktiengesellschaftInventors: Harald Oertel, Paul Uhrhan, Reinhard Lantzsch, Ernst Roos, Dieter Arlt, Hans Schroer
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Patent number: 4145512Abstract: According to the invention there are obtained modified polyurethanes which have a durable, wash-fast, acid-resistant, cleaning-resistant and solvent-resistant stabilization on the basis of 2,2,6,6-tetraalkyl-piperidine light protective agents. The stabilizers are integral constituents of the polyurethanes, that is to say they are built into the polyurethane chain by a chain lengthening reaction in which two H-active reactive groups (preferably from the series of primary or secondary amino groups, carboxylic acid hydrazide, carbazic ester or semicarbazide groups) of a 2,2,6,6-tetraalkyl piperidine derivative react with isocyanate groups of polyisocyanates or isocyanate prepolymers, optionally in the presence of the usual chain lengthening agents.Type: GrantFiled: September 19, 1977Date of Patent: March 20, 1979Assignee: Bayer AktiengesellschaftInventors: Paul Uhrhan, Harald Oertel, Reinhard Lantzsch, Ernst Roos, Dieter Arlt
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Patent number: 4140673Abstract: Piperidine derivatives of formula ##STR1## can be prepared by reacting 4-amino-piperidine with for example enolic ethers. The compounds obtained may be used as stabilizers.Type: GrantFiled: March 17, 1977Date of Patent: February 20, 1979Assignee: Bayer AktiengesellschaftInventors: Burkhard Lachmann, Hans J. Rosenkranz, Harald Oertel, Alfred Pischtschan, Aziz El-Sayed
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Patent number: 4116932Abstract: The invention relates to a synthetic polymer composition stabilized against light, heat and atmospheric influences comprising a polymer and from 0.01 to 10% by weight based on the quantity of the synthetic polymer, of a mixture of .alpha.,.alpha.'-bis-(2-hydroxy-3,5-dialkylphenyl)-m-diisopropyl benzene and .alpha.,.alpha.'-bis-(2-hydroxy-3,5-dialkylphenyl)-p-diisopropyl benzene, the mixture containing at least 20% by weight of the m-compound. The stabilized synthetic polymer compositions are used in various forms, e.g. in the form of fibres, filaments, yarns, sheetings, films, foils, latex, foam or coatings.Type: GrantFiled: May 20, 1976Date of Patent: September 26, 1978Assignee: Bayer AktiengesellschaftInventors: Hans-Josef Buysch, Harald Oertel, Ernst Roos
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Patent number: 4101506Abstract: Cyanamides which may be obtained by reacting cyanogen chloride with certain piperidines can be used as stabilizers for synthetic polymers against discoloration and degradation under the effects of visible and/or UV-light, heat and/or atmospheric influences.Type: GrantFiled: October 6, 1976Date of Patent: July 18, 1978Assignee: Bayer AktiengesellschaftInventors: Paul Uhrhan, Reinhard Lantzsch, Harald Oertel, Ernst Roos, Dieter Arlt
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Patent number: 4089841Abstract: Thiazolinylamino-piperidine derivatives can be obtained by reacting a .beta.-chloroisothiocyanate with a 4-amino-piperidine. The resulting products can be used as stabilizers for synthetic polymers against discoloration and degradation under the effect of visible and/or UV-light, heat and/or atmospheric influences.Type: GrantFiled: October 6, 1976Date of Patent: May 16, 1978Assignee: Bayer AGInventors: Reinhard Lantzsch, Paul Uhrhan, Harald Oertel, Ernst Roos, Dieter Arlt
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Patent number: 4088629Abstract: Stabilizers according to the invention are used for stabilizing synthetic polymers against discoloration and degradation under the effect of visible and/or UV light, heat and/or atmospheric influences.Type: GrantFiled: October 6, 1976Date of Patent: May 9, 1978Assignee: Bayer AktiengesellschaftInventors: Paul Uhrhan, Reinhard Lantzsch, Harald Oertel, Ernst Roos, Dieter Arlt
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Patent number: 4073746Abstract: The invention relates to mixtures of .alpha.,.alpha.'-bis-(2-hydroxy-3,5-dialkylphenyl)-m-diisopropylbenzene and .alpha.,.alpha.'-bis-(2-hydroxy-3,5-dialkylphenyl)-p-diisopropylbenzen e which contain at least 20% by weight and preferably from 40 to 70% by weight of the m-compound. Moreover, the invention relates to a process for the production of such mixtures. The mixtures are suitable for stabilizing polyurethanes and other synthetic polymers against discoloration and degradation when exposed to visible and/or UV light and/or atmospheric constituents such as oxygen oxides or nitrogen and waste gases from combustion. Particularly, they are suitable for stabilizing threads and foils of these products including coatings.Type: GrantFiled: May 20, 1976Date of Patent: February 14, 1978Assignee: Bayer AktiengesellschaftInventors: Hans-Josef Buysch, Harald Oertel, Ernst Roos
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Patent number: 4070345Abstract: The invention relates to monomethylol ether diols corresponding to the formula ##STR1## in which R represents a straight-chain or branched alkylene radical having up to 12 carbon atoms, andR' represents an alkyl radical.Type: GrantFiled: September 21, 1976Date of Patent: January 24, 1978Assignee: Bayer AktiengesellschaftInventors: Hans Dieter Winkelmann, Harald Oertel, Norbert Weimann
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Patent number: RE29623Abstract: Light stable polyurethane coatings with a considerably increased softening range and melting points coupled with improved resistance to perchlorethylene is obtained by using a chain extender comprising at least 80 mol % 1,4-diamino cyclohexane with a cis/transisomer ratio of from 10/90 to 60/40 .Iadd.and by using aliphatic or cycloaliphatic diisocyanates wherein such diisocyanates consist of at least 75 mol percent of 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethyl cyclohexane.Iaddend..Type: GrantFiled: September 3, 1976Date of Patent: May 2, 1978Assignee: Bayer AktiengesellschaftInventors: Harald Oertel, Bruno Zorn, Wilhelm Thoma, Klaus Noll