Patents by Inventor Wolf-Dieter Schroer
Wolf-Dieter Schroer 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: 5679219Abstract: A base paper for decorative coating systems which is made of a paper pulp and contains in addition to cellulose fibers, at least one filler, a wet strength imparting cationic resin, and anionic inorganic particles.Type: GrantFiled: October 4, 1995Date of Patent: October 21, 1997Assignee: Technocell Dekor GmbH & Co. KGInventors: Michael Harms, Christa Schnieder, Wolf-Dieter Schroer
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Patent number: 5436070Abstract: A magnetic dispersion comprising finely divided iron power or iron alloy powder having a BET value of more than 35 m.sup.2 /g dispersed in a polymeric binder and organic solvent, whose filterability is markedly improved, is obtained by using certain low molecular weight phosphoric esters of the general formula I or II ##STR1## combined with a dispersion-active compound which contains at least one polar group capable of adsorption on the magnetic pigment. The polar group of the dispersion-active compound can be an acid or alkaline or amphoteric group or a group capable of hydrogen bonding or polarization. The dispersion-active compound can be a polycondensate, a polyaddition product or a chain growth copolymer which can also be used in the magnetic dispersion combined with customary other polymeric binders.Type: GrantFiled: September 26, 1994Date of Patent: July 25, 1995Assignee: BASF Magnetics GmbHInventors: Wolf-Dieter Schroer, Attila Vass, Juergen Sauter, Juergen Schmidt, Guenther Kuntz
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Patent number: 5115013Abstract: Aqueous dispersions of copolymers and/or graft copolymers composed of ethylenically unsaturated perfluoroalkyl monomers and perfluoroalkyl-free ethylenically unsaturated monomers can be prepared by polymerization in the presence of aqueous, emulsifier-free polyurethane dispersions as the graft base based on compounds containing perfluoroalkyl groups and active hydrogen atoms and compounds containing ionic and/or nonionic hydrophilic groups and active hydrogen atoms and polyisocyanates and can be used for the oil-repellent and water-repellent finishing of textiles, carpets, leather and paper.Type: GrantFiled: April 12, 1991Date of Patent: May 19, 1992Assignee: Bayer AktiengesellschaftInventors: Jutta Rottger, Karl-Heinz Passon, Wolf-Dieter Schroer, Wilfried Kortmann, deceased
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Patent number: 5093470Abstract: Crosslinkable compounds obtainable by reaction of water-soluble mono- or polyamines with 2,3-epoxypropyl sulphonates or 2-hydroxypropyl 1,3-bis-sulphonates or their mixtures with up to 15 mol % of an epihalogenohydrin or diyhalogenohydrin are used for imparting wet strength to paper.Type: GrantFiled: August 14, 1991Date of Patent: March 3, 1992Assignee: Bayer AktiengesellschaftInventors: Henning Bachem, Georg Schroder, Carlhans Suling, Jurgen Reiners, Janos Muszik, Dieter Arlt, Manfred Jautelat, Wolf-Dieter Schroer
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Patent number: 5082527Abstract: Crosslinkable compounds obtainable by reaction of water-soluble mono- or polyamines with 2,3-epoxypropyl sulphonates or 2-hydroxypropyl 1,3-bis-sulphonates or their mixtures with up to 15 mol % of an epihalogenohydrin or dihalogenohydrin are used for imparting wet strength to paper.Type: GrantFiled: March 14, 1989Date of Patent: January 21, 1992Assignee: Bayer AktiengesellschaftInventors: Henning Bachem, Georg Schroder, Carlhans Suling, Jurgen Reiners, Janos Muszik, Dieter Arlt, Manfred Jautelat, Wolf-Dieter Schroer
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Patent number: 5028236Abstract: Ketene dimers of the general formula ##STR1## wherein R.sub.1 and R.sub.2 independently of one another denote an alkyl or alkenyl radical each of which has at least 8 C atoms, a cycloalkyl radical having at least 6 C atoms or an aryl or aralkyl radicalare used for the treatment of wool and synthetic polyamide fibres.Type: GrantFiled: August 4, 1989Date of Patent: July 2, 1991Assignee: Bayer AktiengesellschaftInventors: Wilfried Kortmann, Wolf-Dieter Schroer, Karl-Heinz Passon
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Patent number: 4994089Abstract: The carrier mixture contains N-alkylphthalimides and compounds of the general formula ##STR1## in which R is C.sub.1 -C.sub.7 -alkyl; phenyl, benzyl or phenylethyl, which can be substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkoxycarbonyl,R.sup.1 is hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.3 -alkylcarbonyloxy, hydroxyl or C.sub.1 -C.sub.4 -alkoxycarbonyl,m is 0 or 1,n is 0 or 1, m and n not being 0 at the same time.Type: GrantFiled: September 28, 1989Date of Patent: February 19, 1991Assignee: Bayer AktiengesellschaftInventors: Frank Bartkowiak, Hans Schulze, Wolf-Dieter Schroer, Gunther Boehmke, Karlhans Jakobs, Willi Schossler
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Patent number: 4975499Abstract: Cationic crosslinkable polyamidoamine resins which are obtainable by reaction of(A) a water-soluble polyamidoamine prepared from(1) aliphatic or aromatic dicarboxylic acids or functional derivatives thereof, such as anhydrides, esters or half-esters, and .omega.-aminocarboxylic acids containing at least 3 C atoms or lactams thereof, and(2) a polyamine mixture of (.alpha.) polyamines which contain at least two amino groups which are capable of amide formation and at least one further secondary or tertiary amino group, and (.beta.) polyamines which contain only two amino groups which are capable of amide formation,(B) with an epihalogenohydrin, in a molar ratio of 0.7 to 3.5 mol of epihalogenohydrin per mol of basic nitrogen in component (A),(C) with an inorganic base and(D) with 0.2 to 9.0 mol of a halogen-free mineral or carboxylic acid, the acid being added in at least an amount to give a pH of at least 5,are used as agents for imparting wet strength to paper.Type: GrantFiled: March 13, 1989Date of Patent: December 4, 1990Assignee: Bayer AktiengesellschaftInventors: Henning Bachem, Janos Muszik, Jurgen Reiners, Carlhans Suling, Wolf-Dieter Schroer
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Patent number: 4929309Abstract: Water-soluble crosslinkable polymeric compounds which are obtainable by reaction of reaction products, containing halogenohydrin groups, of ammonia or mono- or polyamines and an epihalogenohydrin with inorganic bases and subsequent reaction of the resulting compounds containing epoxide groups with halogen-free sulphonic acids to give compounds containing sulphonic acid ester groups are used for imparting wet strength to paper.Type: GrantFiled: March 15, 1989Date of Patent: May 29, 1990Assignee: Bayer AktiengesellschaftInventors: Henning Bachem, Carlhans Suling, Janos Muszik, Wolf-Dieter Schroer
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Patent number: 4857586Abstract: Water-soluble crosslinkable compounds which are obtainable by reaction of reaction products, containing halogenohydrin groups, of ammonia or mono- or polyamines and an epihalogenohydrin or 1,3-dihalogeno-2-hydroxypropane with inorganic bases and subsequent reaction of the resulting compounds, which contain epoxy groups, with halogen-free acids or derivatives thereof to give compounds containing 1-acyloxy-2-hydroxypropyl groups are used for providing paper with a wet-strength finish, for aftertreatment of cellulose dyed with reactive and direct dyestuffs and for finishing wool.Type: GrantFiled: March 8, 1988Date of Patent: August 15, 1989Assignee: Bayer AktiengesellschaftInventors: Henning Bachem, Janos Muszik, Wolf-Dieter Schroer, Carlhans Suling
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Patent number: 4784727Abstract: A sizing agent which contains from 1 to 60 parts, by weight, of a fixing and sizing accelerating agent and from 0 to 80 parts, by weight, of conventional auxiliaries per 10 parts by weight of hydrophobic, cellulose-reactive sizing materials, the fixing and sizing accelerating agent being a polymer composed of linear or branched carbon chains, to which primary, secondary or tertiary amino and/or quaternary ammonium groups are bound directly or by side chains exhibits a thorough and rapid sizing effect, in particular in the better sizing of paper.Type: GrantFiled: January 20, 1983Date of Patent: November 15, 1988Assignee: Bayer AktiengesellschaftInventors: Wolf-Dieter Schroer, Joachim Probst, Ingeborg Kolb, Ulrich Beck, Peter Mummenhoff, Heinz Baumgen
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Patent number: 4775384Abstract: A polymeric compound obtainable by reactingA. a reaction product1. of a dihalogenohydrocarbon and/or dihalogenoalkyl ether and2. of a polyamine which contains primary and/or secondary amino groups and optionally tertiary amino groups, amide groups, urethane and/or urea groups and also ether groups in a molar ratio of 0.1 to 1.8:1 withB. an epihalogenohydrin or a 1,3-dihalogeno-2-hydroxypropanein a molar ratio of 0.2 mole to 5.0 moles of epihalogenohydrin per mole of base nitrogen or component A is used for treating fibre materials which contain hydroxyl or amide groups before or after dyeing or printing.Type: GrantFiled: March 11, 1987Date of Patent: October 4, 1988Assignee: Bayer AktiengesellschaftInventors: Henning Bachem, Wolf-Dieter Schroer, Ergun Tamer, Heinz-Dieter Feuser
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Patent number: 4737576Abstract: Basic polycondensates which are obtainable by reactingA. a reaction product of1. a dihalogenohydrocarbon and/or a dihalogenoalkyl ether and2. a polyamine which contains two terminal primary and/or secondary and at least one internal tertiary amino group, which amino groups can also be part of a ring,in a molar ratio of 0.7:1 to 1.8:1 withB. an epihalogenohydrin or 1,3-dihalogeno-2-propanol in a molar ratio of 0.2 to 5.0 moles of B per mole of base nitrogen in A,find utility for treating fibre materials which contain hydroxyl or amide groups before or after dyeing or printing and as auxiliaries in papermaking.Type: GrantFiled: March 11, 1987Date of Patent: April 12, 1988Assignee: Bayer AktiengesellschaftInventors: Henning Bachem, Wolf-Dieter Schroer
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Patent number: 4673729Abstract: The present invention relates to agents for increasing the retention of fibres, fillers and pigments and for accelerating drainage in papermaking, and as flocculating agents in the working up of effluents from papermaking by filtration, sedimentation and flotation. They are characterized in that they contain, as active components, one or more nitrogen-containing condensation products which can be obtained by reacting (A) aliphatic polyol-ether-amines which are free from halogen groups, contain cohesive polyether segments and carry no amino groups within these segments, with (B) compounds which are polyfunctional towards amino groups, optionally in the presence of (C) polyaminopolyamides and/or (D) polyalkylenepolyamines, component (B) being employed in an amount such that water-soluble polycondensates which have a viscosity of 100 to 1,000 mPa.s at 25.degree. C. in 25% strength aqueous solution are formed.Type: GrantFiled: March 29, 1985Date of Patent: June 16, 1987Assignee: Bayer AktiengesellschaftInventors: Wolf-Dieter Schroer, Janos Muszik, Gunther Cramm, Otto Benn
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Patent number: 4614546Abstract: New aqueous sizes, in particular paper sizes, are made available which contain(a) ketene dimers of the formula ##STR1## in which R.sub.1 and R.sub.2 can be identical or different and represent hydrocarbon radicals having 6 to 30 carbon atoms,(b) amine-modified starch,(c) hydrophobic compound(s) which contain(s) one or more functional groups which are reactive towards OH groups within a pH range of 2 to 6, and(d) if desired further auxiliaries.Type: GrantFiled: May 29, 1985Date of Patent: September 30, 1986Assignee: Bayer AktiengesellschaftInventors: Wolf-Dieter Schroer, Ulrich Beck, Peter Mummenhoff, Heinz Baumgen
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Patent number: 4613337Abstract: The dyeing of cellulose fibres or fibre blends containing cellulose fibres with reactive dyes by a cold pad-batch or pad-steam process is effected with aqueous padding liquors which contain water-soluble reaction products of copolymers of maleic anhydride and ethylene, propylene, isobutylene, diisobutylene or styrene with ammonia or amines of the formula ##STR1## in which R.sup.1 and R.sup.2 stand for hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -hydroxyalkyl.Type: GrantFiled: May 3, 1985Date of Patent: September 23, 1986Assignee: Bayer AktiengesellschaftInventors: Udo W. Hendricks, Klaus Lesche, Gunter Sackmann, Wolf-Dieter Schroer