Pressure-sensitive adhesive tape or drape
First Claim
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1. An adhesive tape or drape comprising a base sheet and formed thereon, a layer of a pressure-sensitive adhesive comprising as a main constituent a copolymer comprising
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Abstract
An adhesive tape or drape comprising a base sheet and formed thereon a layer of a pressure-sensitive adhesive comprising as a main constituent a copolymer prepared by copolymerizing an alkyl acrylate with 2 to 6 mol% of acrylic acid or methacrylic acid and 0.002 to 0.05 mol% of a polyfunctional compound having at least 2 non-conjugated carbon-to-carbon double bonds per molecule.
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12 Claims
- 1. An adhesive tape or drape comprising a base sheet and formed thereon, a layer of a pressure-sensitive adhesive comprising as a main constituent a copolymer comprising
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2. 94 to 98 mol% based on the total of components (1) and (2) of at least one alkyl acrylate monomer with the alkyl group containing 1 to 14 carbon atoms, the average number of the carbon atoms being 4 to 12, or a mixture of said alkyl acrylate with another monomer selected from the group consisting of methyl methacrylate, vinyl acetate and mixtures thereof in a mol ratio of said alkyl acrylate to said other monomer of at least 5 to 1,2 to 6 mol% based on the total of components (1) and (2) of a monomer selected from the group consisting of acrylic acid, methacrylic acid, and mixtures thereof, and0.002 to 0.05 mol% based on the total of components (1) and (2) of a polyfunctional compound copolymerizable with the monomers (1) and (2) and having at least two non-conjugated carbon-to-carbon double bonds per molecule with the proviso that the amounts of component (1) and component (2) totals 100 mol%;
- said copolymer prepared by copolymerizing components (1), (2), and (3) by solution polymerization or emulsion polymerization.
Specification