C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 9/28 (2006.01) A61K 9/70 (2006.01) A61L 15/58 (2006.01)
Patent
CA 2302634
A method for producing closed cell polymer foam layers is characterized in that an emulsion which can be spread or smoothed out is produced from a solution of one or more polymers in one or more organic solution medium(s) in the form of a coherent exterior Phase A and a liquid which is to be evaporated in the form of a dispersed inner Phase B. The solution medium or the solution medium mixture of Phase A contains a higher level of liquidity than that of Phase B.
L'invention concerne un procédé de production de couches de mousse polymère à cellules fermées, qui se caractérise en ce qu'une émulsion pouvant être appliquée par expansion ou par affleurement est obtenue sur la base d'une solution d'un ou de plusieurs polymères dans un ou plusieurs solvants organiques, sous forme de phase A extérieure cohérente et d'un liquide à volatiliser, sous forme de phase B intérieure. Le solvant ou le mélange de solvants de la phase A présente une plus grande volatilité que celle du liquide de la phase B.
Lts Lohmann Therapie Systeme Ag
Mccarthy Tetrault Llp
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