申请人:BARNER-KOWOLLIK Christopher
公开号:US20150299363A1
公开(公告)日:2015-10-22
The present invention relates to an innovative method for the reversible crosslinking of, for example, adhesives or coating materials, and to a composition stable on storage at room temperature for implementing this crosslinking reaction.
The reversible crosslinking method allows very rapid crosslinking even at a low first temperature, and undoing of the crosslinks at higher temperatures, thereby recovering thermoplastic processability and, for example, allowing the originally bonded substrates to be parted from one another again easily. A particular aspect here is that a plurality of cycles of crosslinking and undoing of the crosslinks are possible with the present system. A feature of the system used for the reversible crosslinking is that it consists of two components, A and B, in which component A is a compound comprising at least two protected dithioester functionalities, preferably cyanodithioester functionalities, and component B is a compound having at least two diene functionalities.
本发明涉及一种创新的方法,用于可逆交联例如粘合剂或涂层材料,以及一种在室温下稳定储存的组合物,用于实现这种交联反应。可逆交联方法允许在低温下非常快速地交联,并在较高温度下解开交联,从而恢复热塑性加工性能,例如使最初粘合的基材再次容易分离。这里的一个特定方面是,本系统可以进行多次交联和解开交联的循环。用于可逆交联的系统的特点在于,它由两个组分A和B组成,其中组分A是一个化合物,包含至少两个受保护的二硫酯官能团,优选为氰基二硫酯官能团,而组分B是一个具有至少两个二烯基官能团的化合物。