Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1995-01-27
1996-10-22
Szekely, Peter A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524247, 524291, 524394, 524548, C08K 517, C08K 5098, C08K 513, C08L 3906
Patent
active
055677533
ABSTRACT:
An adhesive composition which undergoes a change from colored to colorless upon application to a substrate. The composition comprises a shape-giving base, the shape-giving base comprising a gel of a gel-forming salt of an aliphatic carboxylic acid having from about 8 to 36 carbon atoms with a cation selected from the group consisting of alkali metals, ammonia and lower alkylamines in an aqueous liquid selected from the group consisting of water and mixtures of water with water-miscible organic solvents. In a preferred embodiment, the aforementioned gel-forming salt of an aliphatic carboxylic acid is sodium stearate. The composition additionally includes an adhesive component selected from the group consisting of water-soluble and water dispersible adhesives. In a preferred embodiment, the adhesive component is polyvinylpyrrolidone. The composition further includes triethanolamine and a colored indicator which upon exposure to air becomes colorless, the colored indicator being a phthalein, such as phenolphthalein. The adhesive composition is preferably in stick-form disposed in an applicator, such as a reclosable tube dispenser.
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Burns Barbara J.
Shuman Ralph J.
Avery Dennison Corporation
Szekely Peter A.
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