UV-crosslinked hot-melt pressure-sensitive adhesive used for polyvinyl chloride insulation adhesive tape

A composition for a UV-crosslinked hot-melt pressure-sensitive adhesive used for a PVC insulation adhesive tape, comprising the following major components:

• polymers containing vinyl monomers, functional monomers, soft monomers, and polymerizable photosensitive initiators, a polymerization initiator, and an antioxidant;
• wherein the vinyl monomer is selected from a group consisting of one or more n-butyl acrylate, 2-ethylhexyl acrylate, n-octyl acrylate, isobornyl acrylate, n-dodecyl acrylate, methyl n-butyl acrylate, methyl 2-ethylhexyl acrylate, and methyl n-octyl acrylate, and the amount of the vinyl monomer is 40-65% of the total amount;
• wherein the functional monomer is N-vinylpyrrolidone, and the amount thereof is 2-10% of the total amount;
• wherein the soft monomer is C17 acrylate or C17 methacrylate, and the amount thereof is 5-15% of the total amount;
• wherein the polymerizable photosensitive initiator is methacryloyloxy or acryloyloxy containing acetophenone or benzophenone derivative, and the amount thereof is 2-10% of the total amount;
• and
• wherein the polymerization initiator comprises azo compounds, acyl peroxides, and alkyl peroxides, the azo compound being 2,2-azobisisobutyronitrile, and the acyl peroxides being benzoyl peroxide, didecanoyl peroxide or isononanoyl peroxide, or the polymerization initiator is benzotriazole-1-yl-oxy-tris (dimethylamino) phosphonium hexafluorophosphate, and the amount of the polymerization initiator is 1-10% of the total amount;
• wherein the UV-crosslinked hot-melt pressure-sensitive adhesive optionally further comprise a tackifying resin,
• wherein the tackifying resin is selected from the group consisting of rosin resins, terpene resins, petroleum resins, corresponding hydrogenated resins, corresponding esterified modified resins, and combination thereof, and
• wherein the amount of the tackifying resin being 0-5% of the total amount, and
• wherein the UV-crosslinked hot-melt pressure-sensitive adhesive further comprise a copolymer of one or more polymerizable photosensitive initiators and acrylate monomers, or comprising a mixture of oligomers of one or more polymerizable photosensitive initiators and acrylate high polymers.