HOT MELT ADHESIVE

• Main Authors: OKUDA TAKANORI, MORIGUCHI MASAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 06.06.2022
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; BANDAGES, DRESSINGS OR ABSORBENT PADS; CHEMISTRY; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; DYES; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PAINTS; POLISHES; PROSTHESES; TREATMENT OR PROTECTION OF EYES OR EARS; USE OF MATERIALS AS ADHESIVES

To provide a hot melt adhesive capable of performing Allegro coating and having excellent creep resistance and having small hysteresis loss, and to provide a disposable product obtained by using the hot melt adhesive.SOLUTION: There is provided a hot melt adhesive which has (A) a metallocene-based propylene homopolymer and (B) a metallocene-based ethylene/propylene copolymer, wherein the metallocene-based ethylene/propylene copolymer (B) includes (B1) a metallocene-based ethylene/propylene copolymer having a weight average molecular weight of less than 70000 and (B2) a metallocene-based ethylene/propylene copolymer having a weight average molecular weight of 70000 or more. The hot melt adhesive can be suitably used for producing a disposable product.SELECTED DRAWING: None 【課題】アレグロ塗工が可能で、かつ、耐クリープ性に優れ、ヒステリシスロスが小さいホットメルト接着剤、そのホットメルト接着剤を用いて得られる使い捨て製品を提供する。【解決手段】（Ａ）メタロセン系プロピレンホモポリマーと（Ｂ）メタロセン系エチレン／プロピレンコポリマーを有し、（Ｂ）メタロセン系エチレン／プロピレンコポリマーが、（Ｂ１）重量平均分子量７００００未満のメタロセン系エチレン／プロピレンコポリマーおよび（Ｂ２）重量平均分子量７００００以上のメタロセン系エチレン／プロピレンコポリマーを含む、ホットメルト接着剤である。そのホットメルト接着剤は、使い捨て製品を製造するために好適に使用することができる。【選択図】なし