| 摘要 |
<p>It is an object of the present invention to provide adhesive compositions having excellent flexibility, rubber elasticity, mechanical properties, heat resistance and low-temperature properties. An adhesive composition of the invention includes 10 to 70 parts by weight of a soft polypropylene resin composition (X) which includes 40 to 98 wt% of a propylene copolymer (A) satisfying the following requirements (A1) to (A8) and 2 to 60 wt% of a crystalline isotactic polypropylene (B) satisfying the following requirements (B1) to (B3), and 30 to 90 parts by weight of a tackifier (C) (wherein the total of the component (X) and the component (C) is 100 parts by weight), wherein (A1) Shore A hardness: 20 to 90; (A2) the copolymer comprises a copolymer with C 3 units at 51 to 90 mol%, C 2 units at 7 to 24 mol% and C 4-20 ±-olefin units at 3 to 25 mol%; (A3) Mw/Mn: 1.2 to 3.5; (A4) mm: 85 to 99.9%; (A5) value B: 0.8 to 1.3; (A6) 2,1-insertion ratio: less than 1%; (A7) Tg: -10°C to -50°C; (A8) MFR (230°C): 0.5 to 500 g/10 min; (B1) Tm: 100 to 175°C; (B2) mmmm: 90 to 99.8%; (B3) MFR (230°C) : 0.1 to 100 g/10 min.</p> |
