Oriented acrylic hotmelts

Details Oriented acrylic hotmelts Oriented acrylic hotmelts

2006-04-04

2006-04-04

Feely, Michael J. (Department: 1712)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Adhesive outermost layer

C428S523000, C525S191000, C525S221000, C525S242000, C525S298000, C525S301000, C526S072000, C526S317100

Reexamination Certificate

active

07022408

ABSTRACT:
A pressure sensitive adhesive obtainable by free-radical polymerization, characterized in thatat least 65% by weight of the adhesive is based on at least one acrylic monomer from the group of the compounds of the following general formula:where R1=H or CH3and the radical R2=H or CH3or is selected from the group consisting of branched or unbranched saturated alkyl groups having 2–20 carbon atoms,the average molecular weight of the adhesive is at least 65,000,applied to a carrier, the adhesive possesses a preferential direction, where the refractive index measured in the preferential direction nMDis greater than the refractive index measured in a direction perpendicular to the preferential direction nCD, the difference Δn=nMD−nCDbeing at least 1·10−5.

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U.S. Appl. No. 10/415,215: copending application filed Sep. 18, 2003.
Ta-Hua Yu and Garth L. Wilkes, “Orientation determination and morphological study of high density polyethylene (HDPE) extruded tubular films; effect of processing variables and molecular weight distribution,” Polymer, vol. 37, No. 21, 1996, pp. 4675-4687.
Abstract of Japanese Patent Application JP 63278129, filed Nov. 2, 1988.
Abstract of Japanese Patent Application JP 07113993 A, filed Oct. 20, 1983.

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