Patents by Inventor Rolf Tittmann

Rolf Tittmann 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).

  • Patent number: 7442731
    Abstract: The invention relates to a coating having a thickness of from 5 to 25 ?m, comprising a high-molecular-weight organic material and from 5 to 9 g/m2 colored pigments, wherein, based on the total amount of colored pigments, (a) from 30 to 90% by weight of 3,6-di(4?-biphenyl)-2,5-dihydro-pyrrolo[3,4-c]-pyrrole-1,4-dione having a specific surface area of from 20 to 50 m2/g and (b) from 10 to 70% by weight of a further organic colored pigment, selected from the series consisting of quinacridone, diketo-pyrrolo[3,4-c]-pyrrole, dioxazine, indanthrone, perylene, phthalocyanine and 3-amino-1H-isoindol-1-one-oximatometal complex pigments and solid solutions and mixtures thereof, are present.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: October 28, 2008
    Assignee: Ciba Specialty Chemicals Corp.
    Inventor: Rolf Tittmann
  • Publication number: 20060041037
    Abstract: The invention relates to a coating having a thickness of from 5 to 25 ?m, comprising a high-molecular-weight organic material and from 5 to 9 g/m2 colored pigments, wherein, based on the total amount of colored pigments, (a) from 30 to 90% by weight of 3,6-di(4?-biphenyl)-2,5-dihydro-pyrrolo[3,4-c]-pyrrole-1,4-dione having a specific surface area of from 20 to 50 m2/g and (b) from 10 to 70% by weight of a further organic colored pigment, selected from the series consisting of quinacridone, diketo-pyrrolo[3,4-c]-pyrrole, dioxazine, indanthrone, perylene, phthalocyanine and 3-amino-1H-isoindol-1-one-oximatometal complex pigments and solid solutions and mixtures thereof, are present.
    Type: Application
    Filed: September 30, 2003
    Publication date: February 23, 2006
    Inventor: Rolf Tittmann
  • Patent number: 5997769
    Abstract: A description is given of novel stabilizer mixtures comprising at least one compound of the formula ##STR1## and at least one compound of the formula ##STR2## in which the variables are as defined in the claims. The novel stabilizer mixtures are suitable for stabilizing organic material, especially textile fiber materials, against damage by light, oxygen and heat.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: December 7, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Rolf Tittmann, Francesco Fuso, Gerhard Reinert, Hans Peter Harri
  • Patent number: 5871669
    Abstract: A description is given of novel stabilizer mixtures comprising at least one compound of the formula ##STR1## and at least one compound of the formula ##STR2## in which the variables are as defined in the claims. The novel stabilizer mixtures are suitable for stabilizing organic material, especially textile fibre materials, against damage by light, oxygen and heat.
    Type: Grant
    Filed: March 10, 1997
    Date of Patent: February 16, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Rolf Tittmann, Francesco Fuso, Gerhard Reinert, Hans Peter Harri
  • Patent number: 5705605
    Abstract: There is described a process for the preparation of basic poIycondensates, which comprises(a) reacting an amine of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen or alkyl which is unsubstituted or substituted by amino, hydroxy, cyano or C.sub.1 -C.sub.4 alkoxy, and A is alkylene which may be substituted or interrupted by one or more than one hetero atom, with an ammonium salt in the presence of an anhydrous solvent, and(b) reacting the protonised product obtained according to (a) with a cyanamide at elevated temperature.The polycondensates or salts thereof prepared according to this process are particularly suitable aftertreatment agents for enhancing the wetfastness properties of dyed or printed textile material.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: January 6, 1998
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Rolf Tittmann, Ruth Roth