Adhesive composition and surface protection film
A technology of adhesives and compositions, applied in the directions of adhesives, adhesive types, ester copolymer adhesives, etc., can solve the problem of temporary stop of cross-linking reaction, reduce the amount of addition and prevent the phenomenon of residual adhesive , improve the prevention effect
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Embodiment 1
[0129] Nitrogen gas was introduced into a reaction apparatus equipped with a stirrer, a thermometer, a reflux condenser, and a nitrogen introduction pipe, thereby replacing the air in the reaction apparatus with nitrogen. Then, added 100 parts by weight of 2-ethylhexyl acrylate, 3.0 parts by weight of 8-hydroxyoctyl acrylate, 10 parts by weight of polypropylene glycol monoacrylate (forming polyalkylene glycol chain The average repetition number of alkylene oxide n=12), and 60 parts by weight of solvent (ethyl acetate) was added at the same time. Then, 0.1 parts by weight of azobisisobutyronitrile was added dropwise as a polymerization initiator over 2 hours, and reacted at 65° C. for 6 hours to obtain acrylic acid copolymerization compound with a weight average molecular weight of 500,000 and used in Example 1. Material solution 1. A part of the acrylic copolymer was used as a sample for acid value measurement described later.
Embodiment 2~6
[0130] [Examples 2-6, Reference Examples 1-3 and Comparative Examples 1-4]
[0131] Except that the composition of each monomer was adjusted as described in (A) to (E) and (I-2) in Table 1, it was carried out in the same manner as the above-mentioned acrylic copolymer solution 1 used in Example 1, Acrylic acid copolymer solutions used in Examples 2 to 6, Reference Examples 1 to 3, and Comparative Examples 1 to 4 were obtained.
[0132] Table 1
[0133]
[0134]
[0135] [Example 1]
[0136] To the acrylic copolymer solution 1 of Example 1 manufactured as described above, 1.5 parts by weight of 1-octylpyridinium hexafluorophosphate, 0.05 parts by weight of polyether-modified siloxane compound (HLB=7), 8.5 parts by weight were added. After stirring acetylacetone in parts by weight, add 2.0 parts by weight of Coronate HX (coronate HX, the isocyanurate of hexamethylene diisocyanate compound), 0.1 parts by weight of titanium triacetylacetonate, and stir and mix to obtain Exa...
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