Adhesive composition for use as a wound dressing or ostomy/prosthesis adhesive
First Claim
1. A pressure sensitive hydrocolloid adhesive composition for use as a wound dressing or an ostomy/prosthesis adhesive consisting essentially of i) about 20 percent to about 50 percent by weight of a hydrophobic, unsaturated, elastomeric homopolymer having at least about 50 mole percent unsaturation, ii) about 20 percent to about 60 percent by weight of a polyisobutylene tackifier and iii) about 5 percent to about 60 percent by weight of a hydrocolloid absorbent, wherein the homopolymer is cross-linked by 5-200 kGy gamma radiation to provide the composition with a cross-linked matrix having a wet integrity value of at least about eighty percent, a shear hold value of at least about 500 min/500 g and a dry cohesive strength which prevents adhesive composition breakage or delamination when a 1×
- 6 cm strip of the adhesive composition is slowly peeled off a polyester adhesive tape at a 90 degree angle and at a speed of 10 mm/minute.
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Accused Products
Abstract
Hydrocolloid adhesive compositions for use as wound dressings or ostomy/prosthesis adhesives are disclosed. These adhesive compositions are made of a mixture of a hydrophobic, unsaturated, elastomeric homopolymer, a polyisobutylene tackifier and a hydrocolloid absorbent which is cross-linked by 5-200 kGy gamma radiation to provide a cross-linked matrix having a wet integrity value of at least about eighty percent, a shear hold value of at least about 500 min/500 g and a dry cohesive strength which prevents adhesive composition breakage or delamination. Methods of using such wound dressings or ostomy/prosthesis adhesives and methods of making the hydrocolloid adhesive compositions are also disclosed.
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Citations
13 Claims
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1. A pressure sensitive hydrocolloid adhesive composition for use as a wound dressing or an ostomy/prosthesis adhesive consisting essentially of i) about 20 percent to about 50 percent by weight of a hydrophobic, unsaturated, elastomeric homopolymer having at least about 50 mole percent unsaturation, ii) about 20 percent to about 60 percent by weight of a polyisobutylene tackifier and iii) about 5 percent to about 60 percent by weight of a hydrocolloid absorbent, wherein the homopolymer is cross-linked by 5-200 kGy gamma radiation to provide the composition with a cross-linked matrix having a wet integrity value of at least about eighty percent, a shear hold value of at least about 500 min/500 g and a dry cohesive strength which prevents adhesive composition breakage or delamination when a 1×
- 6 cm strip of the adhesive composition is slowly peeled off a polyester adhesive tape at a 90 degree angle and at a speed of 10 mm/minute.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
Specification