Flexible microsphere articles having high temperature stability

• Main Authors: WALKER CHRISTOPHER B JR, CLARK JOHN C, KUGEL ALEXANDER J, KRISHNAN VIVEK
• Format: Patent
• Language: Chinese; English
• Published: 28.09.2016
• Subjects: LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; TRANSPORTING

The invention provides flexible microsphere articles having high temperature stability. There is provided an article which includes a binder resin layer comprising an aliphatic polyurethane polymer comprising a plurality of soft segments and a plurality of hard segments, where the soft segments comprise poly(alkoxy) polyol, and where the poly(alkoxy) polyol is essentially free of crosslmker; and a plurality of microspheres partially embedded and adhered to a first major surface of the binder resin layer, wherein the specific chemical identities and relative amounts of the segments and moieties of the aliphatic polyurethane polymer are sufficient to impart a glass transition temperature of 10 DEG C or less in the article and a storage modulus in the article that changes less than 15 MPa from 25 DEG C to 175 DEG C. 本文提供了制品，所述制品包括：包含脂族聚氨酯聚合物的粘结剂树脂层，所述脂族聚氨酯聚合物包含多个软链段和多个硬链段，其中软链段包含聚(烷氧基)多元醇，并且其中聚(烷氧基)多元醇基本上不含交联剂；以及部分嵌入且粘附至粘结剂树脂层的第主表面的多个微球体，其中脂族聚氨酯聚合物的链段和部分的具体化学特性和相对量足以赋予制品10℃或更低的玻璃化转变温度，以及赋予制品从25℃至175℃变化小于15MPa的储能