Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Adhesive outermost layer
Patent
1992-06-30
1993-07-20
Ziegler, Jacob
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Adhesive outermost layer
428286, 428343, 428355, 428461, 428507, 524252, 524323, 524351, 524359, 525 71, 525 75, B32B 712, B32B 1508
Patent
active
052292061
ABSTRACT:
Adhesive composition comprising a blend consisting essentially of (1) an adhesive composition comprising a tacky pressure-sensitive adhesive, said adhesive preferably selected from rubber-based adhesives, e.g., the thermoplastic elastomers, and (2) a pressure-sensitive adhesive composition comprising a polymer having in its backbone at least a major portion by weight of polymerized monomeric acrylic or methacrylic acid ester of a non-tertiary alcohol having from 1 to 14 carbon atoms with the average number of carbon atoms being about 4 to about 12, and grafted to the backbone, polymeric moieties having a Tg greater than about 20.degree. C. and a weight average molecular weight above about 2,000. The pressure-sensitive adhesive of adhesive composition (1) has moieties, e.g., blocks or grafts, that associate with the polymeric moieties grafted to the backbone of the polymer of adhesive composition (2). Pressure-sensitive adhesives prepared from the composition of this invention can be tailored to exhibit high values of peel adhesion with respect to both polar and non-polar surfaces, a high level of tack, and a high level of static shear.
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Griswold Gary L.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Weinstein David L.
Ziegler Jacob
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