Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1992-11-16
1994-02-08
Lesmes, George F.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
524 44, 524 45, 524 55, 524 57, 524916, C08K 304, C08L 126
Patent
active
052848973
ABSTRACT:
A water based thixotropic adhesive gel is disclosed which consists essentially of: water; partially hydrolyzed polyvinyl alcohol, or wherein a portion of the polyvinyl alcohol is replaced with polyvinylpyrrolidone; a water-soluble high viscosity thickening agent polymer which is compatible with the polyvinyl alcohol and which imparts thixotropic properties to the gel; a water-soluble plasticizer for the polyvinyl alcohol; and a watersoluble defoamer in proportion of ingredients so that the viscosity of the adhesive will break down when a flexible tube or squeeze bottle dispenser is finger-pressed and have a sufficiently low viscosity to allow for easy extrusion from an orifice having a diameter of about 0.06 to 0.15 inches. When pressure is released, after the desired amount of adhesive has flown out of the dispenser, the adhesive quickly reverts to very close to its original gel state so that it will not run on a vertical surface on porous and semiporous surfaces such as paper. An article of manufacture is also provided whereby the adhesive gel containing the above ingredients is in a flexible dispenser from which the adhesive can be dispensed by finger-pressure.
REFERENCES:
patent: 3442845 (1969-05-01), Columbus et al.
patent: 3896073 (1975-07-01), Smith
patent: 4251400 (1981-02-01), Columbus
patent: 4722954 (1988-02-01), Hallworth
patent: 4967839 (1990-11-01), Carpenter et al.
patent: 5190997 (1973-03-01), Lindermann et al.
Handbook of Water Soluble Gums and Resins by R. L. Davidson, 1980, McGraw Hill, pp. 20-18, 20-19, 20-20, 21-15 and 21-16.
Kelzan, Xanthan Gum, (Technical Bulletin DB-15) of Merck & Co.
Kelco Xanthan Gum, Third Edition of Kelco, a division of Merck & Co.
Anderson John
Columbus Peter S.
Patel Yogeshbhai B.
Borden Inc.
Copenheaver Blaine
Lesmes George F.
Maskas George P.
Rainear Dennis H.
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