Material for the prevention of bedsores

A - Human Necessities – 61 – L

Patent

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Details

A61L 15/26 (2006.01) A01F 13/00 (2006.01) A61F 13/06 (2006.01) A61K 8/72 (2006.01) A61Q 19/00 (2006.01)

Patent

CA 2751368

The invention relates to a layer (20) for protecting the skin and tissue close to the skin, including a polymer gel obtained by at least partial polymerisation of a mixture including: around 15% of polydimethylsiloxane with dimethyl-vinyl terminations with a viscosity of more than 20,000 mPa.s, around 25% of polydimethylsiloxane with dimethyl-vinyl terminations with a viscosity between 200 and 20,000 mPa.s, around 45% of polydimethylsiloxane with trimethyl terminations, around 12% of fumed silica with trimethylsiloxy treatment, and around 3% of co-polydimethylsiloxane-polymethyl-hydrogen-siloxane with dimethyl-hydrogen terminations, the polymer gel having, at 35°C, with a bias frequency ranging from 0 to 100 rd/s, a rigidity or elastic component of around 11,000 to 20,000 Pa, a viscosity or damping component of around 700 to 8,000 Pa and a damping factor or Tan Delta of around 0.06 to 0.38, and formation of a protective layer using the polymer gel.

L'invention concerne une couche (20) de protection de la peau et des tissus au voisinage de la peau, comprenant un gel polymère obtenu par polymérisation au moins partielle d'un mélange comprenant : environ 15% de polydiméthylsiloxane à terminaisons diméthyl-vinyles ayant une viscosité supérieure à 20000 mPa.s, environ 25% de polydiméthylsiloxane à terminaisons diméthyl-vinyles ayant une viscosité comprise entre 200 et 20000 mPa.s, environ 45% de polydiméthylsiloxane à terminaisons triméthyles, environ 12% de silice de pyrogénation traitée triméthylsiloxy, et environ 3% de co-polydiméthylsiloxane-polyméthyl-hydrogéno-siloxane à terminaisons diméthyle- hydrogéno, le gel polymère présentant à 35°C, lorsqu'une fréquence de sollicitation varie entre 0 et 100 rd/s, une rigidité ou composante élastique variant d'environ 11000 à 20000 Pa, une viscosité ou composante amortissante variant d'environ 700 à 8000 Pa et un facteur d'amortissement ou Tan Delta variant d'environ 0,06 à 0,38, et de formation d'une couche de protection à partir du gel polymère.

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