Patents Assigned to DuPont de Nemours Intl., S.A.
  • Patent number: 5614256
    Abstract: The invention relates to coating compositions for producing watertight, vapor-permeable and flame-retardant coatings, comprising a vinyl chloride copolymer or vinyl acetate/ethylene dispersion, flameproofing agents, foam stabilizer and optionally crosslinkers. The invention further relates to a process for producing watertight, vapor-permeable and flame-retardant coatings by mechanically foaming the coating composition to produce a stable foam, applying the foam to a woven, knitted or nonwoven support material on one or both of the sides and drying it at a temperature of from 60.degree. to 180.degree. C. and optionally, after drying, compressing the foam layer. The textile support materials coated with the coating composition are suitable for use in building protection and in the geotextile sector.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: March 25, 1997
    Assignees: Wacker-Chemie GmbH, Dupont de Nemours Intl. S.A.
    Inventors: Konrad A. Wierer, Franco Serafini
  • Patent number: 5314530
    Abstract: The invention relates to coating compositions for producing watertight, vapor-permeable and flame-retardant coatings, comprising a vinyl chloride copolymer or vinyl acetate/ethylene dispersion, flameproofing agents, foam stabilizer and optionally crosslinkers. The invention further relates to a process for producing watertight, vapor-permeable and flame-retardant coatings by mechanically foaming the coating composition to produce a stable foam, applying the foam to a woven, knitted or nonwoven support material on one or both of the sides and drying it at a temperature of from 60.degree. to 80.degree. C. and optionally, after drying, compressing the foam layer. The textile support materials coated with the coating composition are suitable for use in building protection and in the geotextile sector.
    Type: Grant
    Filed: July 23, 1992
    Date of Patent: May 24, 1994
    Assignees: Wacker Chemie GmbH, DuPont de Nemours Intl., S.A.
    Inventors: Konrad A. Wierer, Franco Serafini