Patents by Inventor Winfried Mennicke
Winfried Mennicke 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).
-
Publication number: 20020038482Abstract: This invention relates to a process for dyeing wood with a liquid dyestuff preparation containingType: ApplicationFiled: February 2, 2000Publication date: April 4, 2002Inventors: Winfried Mennicke, Rolf Richter
-
Patent number: 6194554Abstract: The invention relates to novel disazo dyes of the formula in which the substituents and indices have the meaning stated in the disclosure, that are suitable for dyeing and printing polymeric materials and for the preparation of recording liquids for ink jet recording apparatus.Type: GrantFiled: November 18, 1998Date of Patent: February 27, 2001Assignee: Bayer AktiengesellschaftInventors: Winfried Mennicke, Klaus Kunde
-
Patent number: 6084078Abstract: The novel disazo dyestuffs of the formula (I) in which the substituents and indices have the meanings given in the description, are outstandingly suitable for dyeing cellulosic materials in red-violet to blue brilliant color shades.Type: GrantFiled: December 17, 1997Date of Patent: July 4, 2000Assignee: Bayer AktiengesellschaftInventor: Winfried Mennicke
-
Patent number: 5883234Abstract: The novel process for dyeing cellulosic materials with disazo dyestuffs of the formula ##STR1## in which the substituents NHR.sup.1 and NHR.sup.2 are in each case in the 6- and/or 7-position and R.sup.1, R.sup.2, m, n, p and q have the meaning given in the description, produces blue dyeings with very good fastness properties.Type: GrantFiled: September 18, 1997Date of Patent: March 16, 1999Assignee: Bayer AktiengesellschaftInventors: Winfried Mennicke, Klaus Kunde
-
Patent number: 5534052Abstract: The new polymeric dyestuffs which are obtainable by reaction ofA) Polyamidoamines having an average molecular weight, determined as the weight-average, of 260 to 10,000, which in turn are obtainable by reaction of aliphatic polyamines (I) which contain at least two primary amino groups and at least one secondary amino group, if appropriate as a mixture with diamines (II), with dicarboxylic acids (.alpha.), with the proviso that the molar ratio of the sum of primary and secondary amino groups contained in (I) and if appropriate (II) to the carboxyl groups in (.alpha.)>1, and is preferably 1.05 to 3, withB) a dyestuff which contains, per molecule, at least one group which is reactive towards primary and secondary amino groups,the molar ratio of the sum of primary and secondary amino groups contained in A) to B) being 1 to 15, preferably 1 to 10,are outstandingly suitable for dyeing and printing materials containing cellulose groups and amide groups and as recording liquids for ink jet recording systems.Type: GrantFiled: November 29, 1994Date of Patent: July 9, 1996Assignee: Bayer AktiengesellschaftInventors: Winfried Mennicke, Karin Hassenruck
-
Patent number: 5503666Abstract: Novel dyestuffs have been found which are obtainable by reactingA) polyamines containing at least 2 primary or secondary amino groups withB) reactive compounds containing at least two groups which are reactive towards primary and secondary amines in an amount of 5 to 95 mol %, relative to the primary and secondary amino groups of the polyamine, andC) dyestuffs containing at least one acylatable primary or secondary amino group in an amount of 10 to 200 mol %, relative to the reactive compound, andD) carbonyl- or sulphonyl-containing acylating agents in an amount of 5 to 95 mol %, relative to the primary and secondary amino groups of the polyamineand can be used in particular for coloring and printing cellulose-/amido-containing materials and as recording fluids for ink- jet recording systems.Type: GrantFiled: April 7, 1995Date of Patent: April 2, 1996Assignee: Bayer AktiengesellschaftInventors: Winfried Mennicke, Karin Hassenruck
-
Patent number: 5484900Abstract: 1:2 chromium complex dyestuffs of the formula (I) ##STR1## in which A, B, R.sup.1, R.sup.2, R.sup.3, R.sup.4, p, m, n, n' and Cat.sup.(+) have the meaning given in the description, are suitable for dyeing and printing amido-containing materials.Type: GrantFiled: February 25, 1994Date of Patent: January 16, 1996Assignee: Bayer AktiengesellschaftInventor: Winfried Mennicke
-
Patent number: 5391207Abstract: Improved dyestuff solutions for the dyeing of leather contain 5 to 30 parts by weight of a dyestuff, 20 to 80 parts by weight of an alkoxy alcohol of the formula (I)R--O--(--A--O--).sub.n --H (I),10 to 40 parts by weight of a lactone, lactam or cyclic urea and 5 to 50 parts by weight of water.Type: GrantFiled: March 30, 1994Date of Patent: February 21, 1995Assignee: Bayer AktiengesellschaftInventors: Rainer Gerlach, Winfried Mennicke, Wolfgang Mullers
-
Patent number: 5250671Abstract: The novel unsymmetrical 1:2 chromium complex dyestuffs of the formula ##STR1## in which the substituents R.sup.1, R.sup.2, R.sup.3, n and Cat.sup.(+) have the meaning given in the description, are highly suitable for the dyeing and printing of natural and synthetic amido-containing materials in predominantly red hues having good light, wet and diffusion fastness properties.Type: GrantFiled: September 8, 1992Date of Patent: October 5, 1993Assignee: Bayer AktiengesellschaftInventor: Winfried Mennicke
-
Patent number: 5074884Abstract: To improve the affinity of anionic dyestuffs in the dyeing of leather materials, polycondensation products consisting of at least one amine of the formula ##STR1## in which the radicals have the meanings mentioned in the description with one dicarboxylic acid and, if desired, .omega.-aminocarboxylic acid or its lactam are highly suitable.Type: GrantFiled: October 2, 1990Date of Patent: December 24, 1991Assignee: Bayer AktiengesellschaftInventors: Winfried Mennicke, Harro Traubel
-
Patent number: 4497734Abstract: Asymmetrical 1:2 chromium complex dyestuffs which, in the form of the free acid, correspond to the formula ##STR1## wherein X represents CO or a direct bond andm represents 0 or 1 andthe rings a, b and c and, if present, fused-on benzene rings can carry further substituents customary in the chemistry of metal complex dyestuffs,are used for dyeing materials containing amide groups, in particular leather, and produce dyeings having a green hue and good general fastness properties.Type: GrantFiled: August 3, 1982Date of Patent: February 5, 1985Assignee: Bayer AktiengesellschaftInventor: Winfried Mennicke
-
Patent number: 4424152Abstract: Metal complexes of disazo dyestuffs of the formula ##STR1## wherein one X=chlorine and the other X=NO.sub.2, orboth the radicals X=chlorine, andR=the radical of a diazo component of the benzene, naphthalene or diphenylamine series which, in the o-position relative to the azo group, is free from groups which form metal complexes,and their use for dyeing and printing of nitrogen containing materials, such as silk, wool or synthetic fibers of polyamides or polyurethanes. The resulting dyeings have excellent fastness properties.Type: GrantFiled: July 9, 1981Date of Patent: January 3, 1984Assignee: Bayer AktiengesellschaftInventors: Winfried Mennicke, Hermann Goebel
-
Patent number: 4339380Abstract: Dyestuffs of the formula ##STR1## wherein R.sub.1 represents alkyl or aryl,R.sub.2 represents halogen, CN, CF.sub.3, NO.sub.2, Q.sub.1, --OQ.sub.1, --CONQ.sub.1 Q.sub.2 or --NHCOQ.sub.1,R.sub.3 represents halogen, CN, CF.sub.3, Q.sub.1 or --OQ.sub.1 andK represents the radical of an aniline coupling componentand whereinQ.sub.1 denotes alkyl or aryl andQ.sub.2 denotes hydrogen, alkyl or aralkylpossess very high tinctorial strength and are outstandingly suitable for dyeing polyester fibres, which are dyed in clear orange-red to red shades having good fastness to light, wet treatment and sublimation. The alkyl, aralkyl and aryl radicals mentioned may be further substituted by nonionic groups or by the radical COOH.Type: GrantFiled: November 14, 1979Date of Patent: July 13, 1982Assignee: Bayer AktiengesellschaftInventors: Herbert Hugl, Gerhard Wolfrum, Winfried Mennicke, Karl H. Schundehutte, Jochen Westphal
-
Patent number: 4234479Abstract: Unsymmetrical chromium mixed complex dyestuffs of the formula ##STR1## wherein R.sub.1 and R.sub.2 denote C.sub.1 -C.sub.4 -alkyl, nitrile, carbonamide or X-Z, X denotes a direct bond or a bridge member to a C atom of the rings A, B, C or D or to a 3-C atom of the pyrazoles and Z denotes SO.sub.3 H, COOH or OSO.sub.3 H and A, B, C and D can possess further substituents, are suitable for the dyeing and printing of nitrogen-containing fibrous materials in yellow shades.Type: GrantFiled: January 26, 1977Date of Patent: November 18, 1980Assignee: Bayer AktiengesellschaftInventors: Winfried Mennicke, Walter Scholl, Karl-Heinz Schundehutte
-
Patent number: 4000965Abstract: 1:2 METAL COMPLEX DYES IN THE FORM OF THE LITHIUM SALTS AND CONCENTRATED SOLUTIONS THEREOF ARE USED FOR THE PREPARATION OF DYE BATHS AND PRINTING PASTES FOR DYEING AND PRINTING FIBROUS MATERIALS CONTAINING NITROGEN. The concentrated solutions are obtained by chromating the non-metallized dyes in hydroxyl group containing solvents in the presence of alkaline lithium salts with chromium acetate or chromium formate.Type: GrantFiled: January 29, 1975Date of Patent: January 4, 1977Assignee: Bayer AktiengesellschaftInventors: Winfried Mennicke, Peter Suchanek, Peter F. Vogt