Patents by Inventor Gultekin Erdem

Gultekin Erdem 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: 20230340305
    Abstract: A hotmelt adhesive comprising a metallocene-catalyzed polyolefin and a hydrophilic melt additive. The adhesive is permanently hydrophilic and can be in particular used to bond components of a disposable hygienic article such as a diaper.
    Type: Application
    Filed: April 20, 2022
    Publication date: October 26, 2023
    Inventors: Torsten LINDNER, Gültekin ERDEM
  • Publication number: 20220265892
    Abstract: Absorbent articles, such as diapers or sanitary napkins, comprising a hydrophilic hot melt adhesive with water wetting properties. The hydrophilic hot melt adhesive comprises an ethylene copolymer selected from the group consisting of ethylene vinyl acetate, ethylene n-butyl acrylate, ethylene octene, ethylene propylene, ethylene butene propylene, and mixtures thereof and a nonionic, fatty alcohol ethoxylate surfactant. The hot melt adhesive is particularly suitable for bonding a nonwoven to another component of the article.
    Type: Application
    Filed: February 22, 2022
    Publication date: August 25, 2022
    Inventors: Torsten LINDNER, Gültekin ERDEM, Jinyu CHEN, Yuhong HU
  • Patent number: 7311807
    Abstract: A process for the separation of dichlorobenzene mixtures containing m- and p-dichlorobenzene in which: (i) the mixture is as an extracting agent contacted with a phosphoric ester of the general formula (I) as an extracting agent in which R1, R2 and R3 are identical or different and represent an aliphatic or cycloaliphatic alkyl or alkenyl radical and R1, R2, and R3 together contain at least 3C-atom and not more than 12 C-atoms, or a mixture of different phosphoric esters (I) of formula or is contacted with a phosphine oxide of the general formula (II) as an extracting agent in which R1, R2 and R3 are identical or different and represent an aliphatic or cycloaliphatic alkyl or alkenyl radical or hydrogen, and R1, R2 and R3 together contain at least 3 C-atoms and not more than 12 C-atoms, or a mixture of different phosphine oxides of formula (II) or a mixture of said phosphoric esters of formula (I) and phosphine oxides of formula (II), and subsequently (ii) the components of the mixture are
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: December 25, 2007
    Assignee: Lanxess Deutschland GmbH
    Inventors: Gültekin Erdem, Morris Leckebusch, Günter Olf, Kay-Jochen Rinck, Günter Zühlke
  • Publication number: 20040144637
    Abstract: A process for the separation of dichlorobenzene mixtures containing m- and p-dichlorobenzene by means of extractive rectification using an extracting agent is described.
    Type: Application
    Filed: November 4, 2003
    Publication date: July 29, 2004
    Inventors: Gultekin Erdem, Morris Leckebusch, Gunter Olf, Kay-Jochen Rinck, Gunter Zuhlke