Ultrasonic adhesive gel

Prepare solution of item 1 in item 2 by heating to 70°C, and add item 3 slowly to obtain a homogeneous suspension. 

Add items 4-6. A clear colorless adhesive gel is obtained. Addition of sodium chloride changes consistency. 

Handbook of Pharmaceutical Manufacturing Formulations Semisolid Products 

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Because of their excellent adhesion and physiological safety, povidone K 30 and povidone K 90 are used as adhesives on the skin or mucous membranes. Examples include transdermal systems, oral adhesive gels, buccal adhesive patches or tablets [511,546,547,559,573,574], contact gels for electrocardiograph or electroencephalograph electrodes and adhesives for colostomy bags. Table 107 shows a formulation for a contact gel developed on a laboratory scale for ultrasonic scanning. 

Ogawa, T. and Ohkoshi, M. (1997). Properties of medium density fibreboards produced from thermoplasticized wood fibers by aUylation without adhesives. Mokuzai Gakkaishi, 43(1), 61-67. Ogiso, K. and Saka, S. (1993). Wood-inorganic composites prepared by sol-gel process II. Effects of ultrasonic treatments on preparation of wood-inorganic composites. Mokuzai Gakkasihi, 39(3), 301-307. 

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