Polyolefin-based adhesive composition
A polyolefin and composition technology, applied in the direction of hydrocarbon copolymer adhesives, graft polymer adhesives, polyurea/polyurethane adhesives, etc., can solve delamination, lamination strength drop, barrier layer Achieves the effects of excellent processing characteristics, excellent heat resistance and durability, good adhesion and electrolyte resistance due to problems such as decrease in lamination strength with the sealing layer
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preparation example 1
[0080] In a 1L autoclave, 100 parts by mass of propylene-1-butene copolymer (Tm: 80°C, propylene / 1-butene=80 / 20 molar ratio), 233 parts by mass of toluene, 20 parts by mass of maleic anhydride, The temperature of 5 parts by mass of di-tert-butyl peroxide was raised to 140° C., followed by stirring for an additional 1 hour (herein, it was referred to as “reaction” for 1 hour). Then, the obtained reaction solution was cooled to 100° C., and poured into a container in which 717 parts by mass of toluene and 950 parts by mass of methyl ethyl ketone, which had been heated to 40° C., were previously charged with stirring, cooled to 40° C., stirred for 30 minutes, and then The resin was precipitated by cooling to 25°C (here, the operation of pouring the reaction liquid into a solvent such as methyl ethyl ketone while stirring, and cooling to precipitate the resin is referred to as "reprecipitation"). Then, by centrifuging the slurry containing this resin, the acid-modified propylene-1...
preparation example 2
[0084] Except changing the propylene-1-butene copolymer (Tm: 80°C) used in Preparation Example 1 into a propylene-1-butene copolymer (Tm: 90°C, propylene / 1-butene=85 / 15 molar ratio ), the number of repulping times was changed to 1, and the amount of methyl ethyl ketone charged during repulping was changed to 1,000 parts by mass, and maleic anhydride-modified propylene-1-butane as a modified polyolefin was obtained in the same manner as in Preparation Example 1. Ethylene copolymer (PO-2, acid value 25 mgKOH / g, weight average molecular weight 60,000, Tm 90°C).
preparation example 3
[0086] Except that the addition amount of maleic anhydride was changed to 3 parts by mass, the addition amount of di-tert-butyl peroxide was changed to 1 part by mass, the number of repulping times was changed to 1 time, and the amount of methyl ethyl ketone charged during repulping was changed to 1000 parts by mass Otherwise, a maleic anhydride-modified propylene-1-butene copolymer (PO-3, acid value 5 mgKOH / g, weight average molecular weight 90,000, Tm 80° C.) was obtained in the same manner as in Preparation Example 1 as a modified polyolefin.
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