POLYURETHANE ADHESIVE FOR POWER STORAGE DEVICE PACKAGING MATERIAL PACKAGING MATERIAL FOR POWER STORAGE DEVICE CONTAINER FOR POWER STORAGE DEVICE AND POWER STORAGE DEVICE

• Main Authors: AKIYAMA TAKAFUMI, SHIRAISHI KOKI, HANAKI HIROSHI, HIROSHIMA TSUTOMU
• Format: Patent
• Language: English; Korean
• Published: 06.01.2023
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DYES; ELECTRICITY; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PERFORMING OPERATIONS; POLISHES; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

Provided are a polyurethane adhesive for a power storage device packaging material, which has excellent adhesion and moldability, has a strict heat seal resistance in a molded product, has excellent formability even after long-term durability tests of heat resistance and moisture heat resistance, and prevents the occurrence of defects such as wrinkling and separation of layers, a packaging material for a power storage device, a container for a power storage device, and a power storage device. According to the present invention, the polyurethane adhesive for a power storage device packaging material comprises: a polyol base material (A); a polyisocyanate curing agent (B); and (C) 0.03 to 3% by mass of a phenolic antioxidant (C) with respect to the mass of the polyol base material (A), wherein the polyol base material (A) includes a polyurethane resin having a hydroxyl group which is a reaction product of polyester polyol and polyisocyanate. 뛰어난 접착성이나 성형성을 갖고, 또 성형물의 엄격한 히트 씰 내성도 갖고, 그리고 또한 내열 및 내습열의 장기 내구성 시험 후에 있어서도 우수한 성형성을 갖고, 또 층간의 들뜸 등의 외관 불량이 발생하지 않는 축전 디바이스 포장재용 폴리우레탄 접착제, 그 포장재, 그 포장재를 사용하여 이루어지는 축전 디바이스용 용기, 및 신뢰성이 우수한 축전 디바이스를 제공한다. 상기 과제는, 폴리올 주제(A)와 폴리이소시아네이트 경화제(B)를 함유하는 축전 디바이스 포장재용 폴리우레탄 접착제이며, 폴리올 주제(A)가, 폴리에스테르 폴리올과 폴리이소시아네이트의 반응물인 수산기를 갖는 폴리우레탄 수지를 포함하며, 또 폴리올 주제(A)의 질량을 기준으로 해서, 페놀계 산화 방지제(C)를 0.03~3질량% 포함하는, 축전 디바이스 포장재용 폴리우레탄 접착제에 의해 해결된다.