Absorbent structure with improved water-absorbing material
First Claim
1. An absorbent structure for use in an absorbent article, said absorbent structure comprising a water-absorbing material, which comprises water-absorbing polymer particles and a polyether polyurethane having polyalkylene oxide units in at least one of the group comprising main chains and side chains.
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Accused Products
Abstract
This invention relates to improved absorbent structures containing improved water-absorbing material having a specific coating of elastomeric, film-forming polymers and/or which are made by a specific coating process. Preferred are polyetherpolyurethane coatings. The invention also relates to diapers, adult incontinence articles and catamenial devices, such as sanitary napkins, comprising said absorbent structure of the invention.
114 Citations
18 Claims
- 1. An absorbent structure for use in an absorbent article, said absorbent structure comprising a water-absorbing material, which comprises water-absorbing polymer particles and a polyether polyurethane having polyalkylene oxide units in at least one of the group comprising main chains and side chains.
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2. An absorbent structure for use in an absorbent article, said absorbent structure comprising a water-absorbing material obtainable by a process comprising the steps of:
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a) spray-coating water-absorbing polymer particles with elastomeric polymers at temperatures in the range from 0°
C. to 50°
C., to obtain coated particles; and
b) heat-treating the coated particles at a temperature above 50°
C. - View Dependent Claims (4)
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3. An absorbent structure for use in an absorbent article, said absorbent structure comprising a water-absorbing material, which comprises coated water-absorbing polymer particles that have a heat-treated, spray-coating of elastomeric polymers.
Specification