申请人:Covestro Deutschland AG
公开号:EP4008736A1
公开(公告)日:2022-06-08
A process for producing a thermoplastic polyoxazolidinone comprising copolymerizing a diisocyanate compound with a bisepoxide compound in the presence of a catalyst, in a solvent, wherein the solvent is characterized by a cohesive energy density δ2, the cohesive energy density δ2 being the sum of a component δD2, δD2 being characteristic of dispersion forces between molecules of the solvent, a component δP2, δP2 being characteristic of dipolar intermolecular forces between molecules of the solvent, and a component δH2, δH2 being characteristic of hydrogen bond forces between molecules of the solvent with: δ2 = δD2 + δP2 + δH2; wherein at 25 °C δD has a value of 18.0 MPa0.5 to 20.0 MPa0,5, δP has a value of 8.0 MPa0,5 to 15.0 MPa0,5, and δH has a value of 2.5 MPa0,5 to 9.0 MPa0,5. The invention is also related to the resulting thermoplastic polyoxazolidinone.
一种生产热塑性聚噁唑烷酮的工艺,包括在催化剂存在下,在溶剂中使二异氰酸酯化合物与双环氧化物化合物共聚,其中溶剂的特征是内聚能密度δ2,内聚能密度δ2是分量δD2的总和、δD2是溶剂分子间分散力的特征,δP2是溶剂分子间偶极分子间力的特征,δH2是溶剂分子间氢键力的特征:δ2=δD2+δP2+δH2;其中在 25℃时,δD 的值为 18.0 兆帕 0.5 至 20.0 兆帕 0.5,δP 的值为 8.0 兆帕 0.5 至 15.0 兆帕 0.5,δH 的值为 2.5 兆帕 0.5 至 9.0 兆帕 0.5。本发明还涉及由此产生的热塑性聚恶唑烷酮。