Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Patent
1987-04-10
1988-02-23
van Balen, William J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
428214, 4283173, 4283175, 4283177, 428355, 524272, 524314, B32B 702, B32B 710, C08L 5106
Patent
active
047269820
ABSTRACT:
A pressure-sensitive adhesive that has high cohesive strength and adheres permanently to high-solids automotive paint systems preferably comprises a mixture of (1) a crosslinked acrylic copolymer of acrylic acid ester and N-vinyl-2-pyrrolidone, and (2) certain tackifier resins. Useful tackifier resins are poly(isobornylmethacrylate), pentaerythritol ester of rosin, and mixed-aliphatic/aromatic polymeric tackifier resins such as a t-butylated styrene. The tackifier resin preferably has a T.sub.g of at least 30.degree. C., M.sub.n from 300 to 3000, and a solubility parameter from 8 to 9. The novel pressure-sensitive adhesive is particularly useful as a dense surface layer of a composite tape having a foamlike core.
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"American Paint and Coatings Journal", Mar. 18, 1985, pp. 54-58.
Martin Michael K.
Moon John D.
Moore Cheryl L.
Traynor William J.
Francis Richard
Minnesota Mining and Manufacturing Company
Sell Donald M.
Smith James A.
Van Balen William J.
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