Dow Corning France, S.a.

Dow Corning Corporation

David Pocknell

Bernard F Grisoni

Non-friable siloxane gels which can be used for gel dressings and in medical prostheses are made from compositions comprising (A) alkenyl-containing polydiorganosiloxanes; (B) hydrosilicon compounds having at least 3 Si-H groups; (C) SiH end-blocked polydiorganosiloxanes and (D) a catalyst. These compositions cure rapidly at room temperature having a ratio (RHAlk) of SiH:Si-Alkenyl of from 3:1 to 20:1, the percentage of silicon-bonded H atoms provided by (C) not being less than 81.36-(3.6.times.RHAlk) and having a value of from 10% to 90%.

Organosiloxane gel-forming compositions and use thereof

A surgical dressing comprising a sheet of silicone gel having a wound-facing surface and laminated to the other surface a film of silicone elastomer. The dressing is particularly adapted to the treatment of burns.

Surgical dressing

The specification describes and claims a method of making therapeutic rings from a curable silicone rubber based composition. The rings are capable of controlled release of the therapeutic agent in the human or animal body. The method includes the steps of:

Therapeutic rings

The specification is directed to making noncellular dressings such as gelatinous wound dressings. According to the invention medical and surgical dressings are made by use of packages which may be held in the hand, and which contain the components of two part curable polysiloxane compositions in such a manner that the component may be mixed in predetermined proportions and dispensed therefrom under the influence of propellant gas. The method avoids the need for manual mixing of such compositions during production of dressings.

Methods of making dressings

The specification is directed to polysiloxane foams. There are disclosed compositions capable of curing at room temperature which comprise a hydroxypolysiloxane, an alkylhydrogen polysiloxane, a tin compound as catalyst and finely divided filler. According to the invention storage stability of these foam forming polysiloxane compositions is improved by use as filler of silica which has been pretreated to render is hydrophobic. The subject compositions may comprise two components which do not require individual mixing prior to mixing together of the components. The compositions may be packaged in any convenient manner. The compositions may be used for a variety of purposes, for example to provide medical dressings.

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Antibes, France

David Pocknell