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Skin barrier

  • US 4,367,732 A
  • Filed: 11/30/1981
  • Issued: 01/11/1983
  • Est. Priority Date: 12/05/1980
  • Status: Expired due to Term
First Claim
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1. A skin barrier, essentially consisting of the following elements in combination:

  • (A) a non-adhesive, substantially water-impervious, elastic film, secured to one of the faces of an adhesive layer of(B) an adhesive material which is a gel-like, at least weakly elastic mixture consisting of(I) a continuous phase consisting of(a) at least one physically cross-linked elastomer selected from the group consisting of styrene-olefin-styrene block copolymers,(b) at least one hydrocarbon tackifier resin selected from the group consisting of polymers and copolymers of cyclopentadiene, dicyclopentadiene, α

    -pinene and β

    -pinene,(c) a polar plasticizer for the elastomer, being compatible at least with its styrene blocks and decreasing the upper glass transition temperature of the styrene blocks of the elastomer,(d) an antioxidant, and(e) 0-25%, based on the weight of the adhesive material, of an oily extender,(II) dispersed in the continuous phase (I) a discontinuous phase consisting of at least one hydrocolloid which is swellable in water,the aggregate of said water-impervious elastic film (A) and the adhesive material (B) adhering thereto having a low resistance to quick deformation and after deformation a rapid recovery to substantially its original shape.

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