Patent ID: 9351942
Filing Date: 2016-05-31
CPC Classification: A61K,Y10T

Claim Text:
1. A patch comprising a support and an adhesive layer on at least one surface of the support, wherein the adhesive layer comprises poly(2-methylpropene) having a viscosity average molecular weight of 4,000,000-6,500,000, an organic fluid component having high polarity, a tackifier, and magnesium aluminometasilicate, wherein the magnesium aluminometasilicate comprises an amorphous composite oxide of the formula: wherein a is 0.3-3 and b is 0.3-5, the total content of magnesium aluminometasilicate in the adhesive layer is less than 25 wt % relative to the total weight of the adhesive layer, and the organic fluid component having high polarity has an angle within the range of 20°-80° as calculated by the following formula using an inorganic value and an organic value in an organic conceptual diagram: