Patents by Inventor Lisa B. Rachwal

Lisa B. Rachwal 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: 11560535
    Abstract: Evaporation of water from an aqueous dispersion of a solid peroxide such as benzoyl peroxide is retarded by the incorporation of carboxylic acid salt. The carboxylic acid salt renders the aqueous dispersion less susceptible to explosive decomposition when exposed to external triggering events such as impact, heat, friction or contamination, yet does not interfere with the ability to achieve and maintain a stable, small particle size dispersion having desirable viscosity and flow properties.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: January 24, 2023
    Assignee: Arkema Inc.
    Inventors: Thomas H. Kozel, Lisa B. Rachwal
  • Patent number: 11168205
    Abstract: The invention relates to composite polymer modifiers for thermoplastic resins, and especially for polyvinyl chloride (PVC). The composite modifier is an intimate blend of mineral filler and polymeric process aid, which is formed by the co-powderization of aqueous emulsions, suspensions or slurries of one or more mineral filler(s) and process aid(s). The resulting composite modifier provides more effective modification of the thermoplastic resin than by the use of the dried components formed separately. The composite modifier may also contain other co-powderized components such as impact modifiers, for additional benefits.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: November 9, 2021
    Assignee: Arkema Inc.
    Inventor: Lisa B. Rachwal
  • Publication number: 20190292495
    Abstract: Evaporation of water from an aqueous dispersion of a solid peroxide such as benzoyl peroxide is retarded by the incorporation of carboxylic acid salt. The carboxylic acid salt renders the aqueous dispersion less susceptible to explosive decomposition when exposed to external triggering events such as impact, heat, friction or contamination, yet does not interfere with the ability to achieve and maintain a stable, small particle size dispersion having desirable viscosity and flow properties.
    Type: Application
    Filed: June 6, 2017
    Publication date: September 26, 2019
    Inventors: Thomas H. KOZEL, Lisa B. RACHWAL
  • Publication number: 20180244908
    Abstract: The invention relates to composite polymer modifiers for thermoplastic resins, and especially for polyvinyl chloride (PVC). The composite modifier is an intimate blend of mineral filler and polymeric process aid, which is formed by the co-powderization of aqueous emulsions, suspensions or slurries of one or more mineral filler(s) and process aid(s). The resulting composite modifier provides more effective modification of the thermoplastic resin than by the use of the dried components formed separately. The composite modifier may also contain other co-powderized components such as impact modifiers, for additional benefits.
    Type: Application
    Filed: May 3, 2018
    Publication date: August 30, 2018
    Inventor: Lisa B. Rachwal
  • Patent number: 9988524
    Abstract: The invention relates to composite polymer modifiers for thermoplastic resins, and especially for polyvinyl chloride (PVC). The composite modifier is an intimate blend of mineral filler and polymeric process aid, which is formed by the co-powderization of aqueous emulsions, suspensions or slurries of one or more mineral filler(s) and process aid(s). The resulting composite modifier provides more effective modification of the thermoplastic resin than by the use of the dried components formed separately. The composite modifier may also contain other co-powderized components such as impact modifiers, for additional benefits.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: June 5, 2018
    Assignee: Arkema Inc.
    Inventor: Lisa B. Rachwal
  • Publication number: 20150284553
    Abstract: The invention relates to composite polymer modifiers for thermoplastic resins, and especially for polyvinyl chloride (PVC). The composite modifier is an intimate blend of mineral filler and polymeric process aid, which is formed by the co-powderization of aqueous emulsions, suspensions or slurries of one or more mineral filler(s) and process aid(s). The resulting composite modifier provides more effective modification of the thermoplastic resin than by the use of the dried components formed separately. The composite modifier may also contain other co-powderized components such as impact modifiers, for additional benefits.
    Type: Application
    Filed: June 17, 2015
    Publication date: October 8, 2015
    Applicant: Arkema Inc.
    Inventor: Lisa B. RACHWAL
  • Patent number: 9085679
    Abstract: The invention relates to composite polymer modifiers for thermo-plastic resins, and especially for polyvinyl chloride (PVC). The composite modifier is an intimate blend of mineral filler and polymeric process aid, which is formed by the co-powderization of aqueous emulsions, suspensions or slurries of one or more mineral filler(s) and process aid(s). The resulting composite modifier provides more effective modification of the thermoplastic resin than by the use of the dried components formed separately. The composite modifier may also contain other co-powderized components such as impact modifiers, for additional benefits.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: July 21, 2015
    Assignee: Arkema Inc.
    Inventor: Lisa B. Rachwal
  • Publication number: 20110305862
    Abstract: The invention relates to composite polymer modifiers for thermo-plastic resins, and especially for polyvinyl chloride (PVC). The composite modifier is an intimate blend of mineral filler and polymeric process aid, which is formed by the co-powderization of aqueous emulsions, suspensions or slurries of one or more mineral filler(s) and process aid(s). The resulting composite modifier provides more effective modification of the thermoplastic resin than by the use of the dried components formed separately. The composite modifier may also contain other co-powderized components such as impact modifiers, for additional benefits.
    Type: Application
    Filed: February 24, 2010
    Publication date: December 15, 2011
    Inventor: Lisa B. Rachwal