Patents Represented by Attorney, Agent or Law Firm Budak, Shunk & Farine Co. LPA
  • Patent number: 6723781
    Abstract: A blend of one or more crosslinked polymers or copolymers prepared from an olefinically unsaturated polymerizable carboxylic or anhydride monomer and at least one high molecular weight essentially linear polymer prepared from an olefinically unsaturated polymerizable carboxylic acid monomer. The blend is neutralized to typically a low pH, and generally contains a noncovalent, e.g. ionic, crosslinking agent, and a cure rate modifier. The hydrogel blend is capable of containing a large amount of water, has good tack, good adhesion, and can be utilized as an application vehicle having a backing thereon as well as containing various substances such as personal care compounds, pharmaceuticals, active ingredients, and the like. Conversely, the hydrogel blend can be dried and subsequently wetted without substantial loss of properties.
    Type: Grant
    Filed: August 29, 2000
    Date of Patent: April 20, 2004
    Assignee: Noveon IP Holdings Corp.
    Inventors: Dean M. Frate, Jian-Hwa Guo