Wetness indicating hot-melt adhesives

Details Wetness indicating hot-melt adhesives Wetness indicating hot-melt adhesives

1988-06-20

1990-01-23

Kight, John

Surgery

Means and methods for collecting body fluids or waste material

Absorbent pad for external or internal application and...

524271, 524272, 524275, 524322, 524718, 604389, A61F 1316, A61F 1318, A61F 1320, C08J 2300

Patent

active

048955671

ABSTRACT:
A wetness indicating hot-melt adhesive which changes color in response to the presence of moisture is disclosed, which contains 20 to 70 wt. % of polymer, about 28 to 10 wt. % of which is water sensitive polymer; 25 to 60% of organic acid which is selected from a high acid fatty acid, or rosin acid, or a combination thereof; 0 to 40% of water soluble wax; 0 to 60 wt. % of glycerlo monostearate; 0 to 55 wt. % of hydrogenated castor oil; 0 to 15 wt. % of polyalkylene wax; 0 to 60 wt. % of compatible plasticizer; and a wetness indicating agent which changes the color of the composition in response to moisture therein. The time of response of the color change can be controlled from about one second to a somewhat larger value as desired.

REFERENCES:
patent: 3731685 (1973-05-01), Eidus
patent: 4231370 (1980-11-01), Mroz et al.
patent: 4325851 (1982-04-01), Colon et al.
patent: 4331576 (1982-05-01), Colon et al.

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