Adhesive composition and surface protection film
A composition and adhesive technology, applied in the direction of adhesive types, ester copolymer adhesives, graft polymer adhesives, etc., can solve the difficulty of re-attachment, difficulty of peeling, easy reduction of rework, etc. problem, to achieve the effect of excellent prevention of adhesive residue and improvement of the performance of preventing adhesive residue
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Embodiment 1
[0093] Nitrogen was introduced into a reaction device equipped with a stirrer, a thermometer, a reflux condenser, and a nitrogen introduction pipe, and the air in the reaction device was replaced with nitrogen. Then, 100 parts by weight of 2-ethylhexyl acrylate, 0.9 parts by weight of 8-hydroxyoctyl acrylate, 0.5 parts by weight of acrylic acid, 3 parts by weight of polyethylene glycol monoacrylate, and N-vinyl acrylate were added to the reaction device. 5 parts by weight of pyrrolidone and 60 parts by weight of solvent (ethyl acetate). Then, 0.1 parts by weight of azobisisobutyronitrile as a polymerization initiator was dropped over 2 hours and reacted at 65°C for 6 hours to obtain the acrylic copolymer solution used in Example 1 with a weight average molecular weight of 500,000 1. A part of the acrylic copolymer was extracted and used as a sample for the following acid value measurement.
Embodiment 2~9 and comparative example 1~9
[0095] The composition of the monomers was set as described in (A) to (E) of Table 1. Except for this, in the same manner as the acrylic copolymer solution 1 used in Example 1 above, Example 2 was obtained. ~9 and the acrylic copolymer solution used in Comparative Examples 1-9.
[0096] [Table 1]
[0097]
[0098]
[0099] [Example 1]
[0100] To the acrylic copolymer solution 1 of Example 1 prepared as described above, 0.2 parts by weight of KF-351A (polyether-modified siloxane compound with HLB=12) and 2.5 parts by weight of acetylacetone were added and stirred, then added Chromato HX (isocyanurate body of hexamethylene diisocyanate compound) 1.5 parts by weight and 0.02 parts by weight of dioctyltin dilaurate were stirred and mixed to obtain the adhesive composition of Example 1. After applying the adhesive composition on a release film made of a silicone resin-coated polyethylene terephthalate (PET) film, the solvent was removed by drying at 90°C to obtain an adhesive layer Th...
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