Adhesive composition and surface protection film
A composition and binder technology, applied in the direction of adhesives, binder types, ester copolymer binders, etc., can solve the problem of temporary suspension of crosslinking reaction, reduce the amount of addition, and prevent the phenomenon of binder residue , improve the effect of preventing
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Embodiment 1
[0127] 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, 8-hydroxyoctyl acrylate of 3.0 parts by weight, acrylic acid of 0.4 parts by weight, polypropylene glycol monoacrylate of 10 parts by weight The average repeating number of alkylene oxides of the alkyl diol chain 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 as a polymerization initiator was dropped over 2 hours, and reacted at 65° C. for 6 hours to obtain acrylic acid used in Example 1 with a weight average molecular weight of 500,000. Copolymer Solution 1. A part of the acrylic copolymer was used as a sample for acid value measurement described later.
Embodiment 2~6 and comparative example 1~7
[0129] 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 copolymer solutions used in Examples 2 to 6 and Comparative Examples 1 to 7 were obtained.
[0130] Table 1
[0131]
[0132]
[0133] [Example 1]
[0134] 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 and 0.1 part by weight of α-tocopherol, 2.0 parts by weight of Coronate HX (Coronate HX, isocyanurate of hexamethylene diisocyanate compound) and 0.1 part by weight of titanium triacetylacetonate were added. Stir and mix to obtain the binder composition of Example 1. This adhesive composition was coated on a release film...
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