Claims
- 1. Pressure-sensitive adhesive tape comprising a flexible carrier web and a pressure-sensitive adhesive layer comprising a polymer of one or more monomers which are predominantly alkyl acrylate, the alkyl groups of which have an average of 8-12 carbon atoms, and are nearly free from any polar copolymerizable monomer, wherein up to 3 mol percent of said polar copolymerizable monomers comprise strongly polar copolymerizable monomer and up to 15 mol percent of said polar copolymerizable monomers comprise moderately polar copolymerizable monomer, said adhesive layer being crosslinked to provide a 180.degree. peelback value from glass within the range of 5 to 30 N/dm immediately after being applied, which value does not increase more than 20% after 30 days dwell at 22.degree. C., thus assuring both reliable adhesion and clean peelability after prolonged dwell.
- 2. Pressure-sensitive adhesive tape as defined in claim 1 wherein the strongly polar copolymerizable monomer is acrylic acid.
- 3. Pressure-sensitive adhesive tape as defined in claim 2 wherein the moderately polar copolymerizable monomer was acrylonitrile or N-vinyl-2-pyrrolidone.
- 4. Pressure-sensitive adhesive tape as defined in claim 1 having a second pressure-sensitive adhesive layer as defined in claim 1 on the other face of the carrier web.
- 5. Pressure-sensitive adhesive tape as defined in claim 4 wherein the two pressure-sensitive adhesive layers are identical.
- 6. Pressure-sensitive adhesive tape as defined in claim 4 which is wound upon itself in roll form and can be unwound after prolonged storage without any delamination or transfer of adhesive.
- 7. Pressure-sensitive adhesive tape as defined in claim 1 having an ordinary aggressively pressure-sensitive adhesive layer on the other face of the carrier web.
- 8. Pressure-sensitive adhesive tape as defined in claim 7 which is wound upon itself in roll form and can be unwound after prolonged storage without any delamination or transfer of adhesive.
- 9. Pressure-sensitive adhesive tape as defined in claim 1 having a 180.degree. peelback value from glass within the range of 10 to 20 N/dm immediately after being applied.
- 10. A roll of pressure-sensitive adhesive tape as defined in claim 1.
- 11. Pressure-sensitive adhesive tape as defined in claim 1 wherein said alkyl group of said alkyl acrylate has 8 carbon atoms.
- 12. Pressure-sensitive adhesive tape comprising a flexible carrier web and a pressure-sensitive adhesive layer comprising a polymer of one or more monomers which are predominantly isooctyl acrylate, and are nearly free from any polar copolymerizable monomer, said adhesive layer being crosslinked to provide a 180.degree. peelback value from glass within the range of 5 to 30 N/dm immediately after being applied, which value does not increase more than 20% after 30 days dwell at 22.degree. C., thus assuring both reliable adhesion and clean peelability after prolonged dwell.
Parent Case Info
This is a continuation application Ser. No. 439,047 filed Nov. 4, 1982, now U.S. Pat. No. 4,522,870.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4364972 |
Moon |
Dec 1982 |
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Continuations (1)
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Number |
Date |
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Parent |
439047 |
Nov 1982 |
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