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AssigneeBayer Aktiengesellschaft
InventorsFranz A. Straube, Gunther Lehnert
Estimating the term…
The present invention relates to a process for producing a supporting bandage for surgical or veterinary surgical use comprising covering the part of the body which is required to be supported with an air-permeable dressing and then applying a self-hardening bandage over this dressing, characterized in that the self-hardening bandage comprise strips of air-permeable, flexible fabric coated and/or impregnated with about 50 to 300% by weight, based on the uncoated fabric, of an isocyanate prepolymer which contains free isocyanate groups and is based on aromatic polyisocyanates and polyols containing tertiary amino nitrogen atoms, the prepolymer having an isocyanate content of about 5 to 30% by weight and a tertiary amino nitrogen content of about 0.05 to 2.5% by weight, the coated fabric being soaked with water immediately before it is applied. The present invention also relates to lengths of bandaging material which comprise pieces of flexible, air-permeable fabric coated with about 50 to 300% by weight, based on the uncoated fabric, of an isocyanate prepolymer based on aromatic polyisocyanates and polyols containing tertiary amino nitrogen atoms, the isocyanate prepolymer having an isocyanate group content of about 5 to 30% by weight and a tertiary amino nitrogen content of about 0.05 to 2.5% by weight.
Process for the preparation of a rigid supporting bandage for surgical or veterinary surgical use which attains weight bearing strength in from five to about fifteen minutes comprising covering the part of the body which requires support with an air-permeable dressing and then applying a self-hardening bandage, characterized in that the self-hardening bandage comprises strips of air-permeable, flexible bandaging fabric which have been impregnated and/or coated with about 50 to 300% by weight, based on the uncoated fabric, of an isocyanate prepolymer which contains free isocyanate groups and has been prepared from aromatic polyisocyanates and polyols containing tertiary amine nitrogen atoms, the prepolymer having an isocyanate content of about 5 to 30% by weight and a tertiary amino nitrogen content of about 0.05 to 2.5% by weight, the impregnated and/or coated bandaging fabric being soaked with water immediately before its use.
A process for the preparation of a rigid supporting bandage which attains weight bearing strength in from five to about fifteen minutes comprising
A medical supporting material which attains weight bearing strength in from five to about fifteen minutes after being soaked with water comprising flexible air-permeable pieces of fabric which have been impregnated and/or coated with about 50 to 300% by weight, based on the uncoated fabric, of an isocyanate prepolymer based on aromatic polyisocyanates and polyols containing tertiary amino nitrogen atoms, the isocyanate prepolymer having an isocyanate group content of about 5 to 30% by weight and a tertiary amino nitrogen content of about 0.05 to 2.5% by weight.
A medical supporting material which attains weight bearing strength in from five to about fifteen minutes after being soaked with water enclosed in a moisture free and moisture-impervious container comprising flexible, air-permeable pieces of fabric which have been impregnated and/or coated with about 50 to 300% by weight, based on the uncoated fabric, of an isocyanate prepolymer based on aromatic polyisocyanates and polyols containing tertiary amino nitrogen atoms, the isocyanate prepolymer having an isocyanate group content of about 5 to 30% by weight and a tertiary amino nitrogen content of about 0.05 to 2.5% by weight.
A process for the preparation of a rigid supporting bandage for surgical or veterinary surgical use which attains weight bearing strength in between about 5 and 15 minutes comprising covering the part of the body which requires support with an air-permeable dressing and then applying a self-hardening bandage wherein the self-hardening bandage is prepared by impregnating or coating solvent free strips of air-permeable, flexible bandaging fabric with about 50 to 300% by weight, based on the weight of the untreated fabric, of a solvent free isocyanate prepolymer which contains free isocyanate groups and has been prepared from aromatic polyisocyanates and polyols containing tertiary amino nitrogen atoms at an NCO to OH ratio of between about 2:1 and 15:1, the prepolymer having an isocyanate content of about 5 to 30% by weight and a tertiary amino nitrogen content of about 0.05 to 2.5% by weight, the self-hardening bandage being soaked with water immediately before its use.
A medical supporting material which attains weight bearing strength in between about 5 and 15 minutes after being soaked with water enclosed in a moisture free and moisture impervious container comprising substantially solvent free flexible, air permeable pieces of fabric, which have been coated or impregnated with about 50 to 300% by weight, based on the weight of untreated fabric, of an isocyanate prepolymer, said prepolymer
A medical supporting material which hardens substantially completely in between about five and fifteen minutes after being soaked with water enclosed in a moisture free and moisture impervious container comprising substantially solvent free flexible, air permeable pieces of fabric, which have been coated or impregnated with about 50 to 300% by weight, based on the weight of untreated fabric, of an isocyanate prepolymer, said prepolymer
Dependencies are inferred from the claim text.