公开(公告)号：US20140242399A1

公开(公告)日：2014-08-28

申请号：US14350958

申请日：2012-10-25

Applicant: DSM IP ASSETS B.V.

Inventor： Tijs Nabuurs ,  Gerardus Cornelis Overbeek ,  Michel Johannes Jan Ruts ,  Ronald Tennebroek

IPC: C08G18/38 ,  C09D175/12

CPC classification number: C08G18/3893 ,  C08G18/289 ,  C09D175/12 ,  Y10T428/31663

Abstract: There is described a process for preparing an silane-functional oligomer (such as an alkoxysilane polyurethane) suitable for use as a crosslinkable coating component, the process comprising the steps of: 1) reacting an aminoalkyl silane with a cyclic carbonate, lactone or lactam to form a hydroxyl (OH) or imino (NH) functional silane intermediate, 2) reacting the silane intermediate from step 1) (optionally immediately without isolation) with a diisocyanate (diNCO) to form a silane functional polyurethane; where in step 2) the molar ratio of the total amount OH or NH groups on the silane intermediate of step 1) to the diisocyanate is from 1.8 to 2.2 (preferably about 2.0) and the resultant silane polymer is substantially-free of isocyanate groups thereon.

Abstract translation: 描述了适合用作可交联涂层组分的硅烷官能低聚物（例如烷氧基硅烷聚氨酯）的方法，该方法包括以下步骤：1）使氨基烷基硅烷与环状碳酸酯，内酯或内酰胺反应， 形成羟基（OH）或亚氨基（NH）官能的硅烷中间体，2）使来自步骤1）的硅烷中间体（任选地立即不分离）与二异氰酸酯（diNCO）反应以形成硅烷官能聚氨酯; 在步骤2）中，步骤1）的硅烷中间体上的OH或NH基团的总量与二异氰酸酯的摩尔比为1.8至2.2（优选约2.0），并且所得的硅烷聚合物基本上不含有异氰酸酯基团 。