This invention relates to a process for polymerising acrylonitrile, comprising: (A) forming a polymerisable mixture comprising acrylonitrile monomer, solvent and a metal catalyst; (B) contacting said mixture with an initiator, said initiator being selected from the group consisting of sulfonyl halides, halopropionitriles, substituted halopropionitriles in the form of monoadducts derived from sulfonyl halides and acrylonitrile, monoadducts derived from substituted sulfonyl halides and monomers other than acrylonitrile; or polymers containing end groups derived from sulfonyl halides, halopropionitriles, substituted halopropionitriles in the form of monoadducts derived from sulfonyl halides and acrylonitrile, or monoadducts derived from substituted sulfonyl halides and monomers other than acrylonitrile; and (C) polymerising said acrylonitrile monomer to form a polymer comprised of acrylonitrile. In one embodiment, the polymerisable mixture in step (A) further comprises at least one polymerisable comonomer other than acrylonitrile, and the polymer formed during step (C) is a copolymer or a multicomponent copolymer comprised of acrylonitrile and said at least one other polymerisable comonomer.
本发明涉及一种聚合
丙烯腈的工艺,包括(A) 形成由
丙烯腈单体、溶剂和
金属催化剂组成的可聚合混合物; (B) 将所述混合物与
引发剂接触,所述
引发剂选自以下组别:磺
酰卤、卤丙酰腈、由磺
酰卤和
丙烯腈衍生的单体形式的取代卤丙酰腈、由取代磺
酰卤和
丙烯腈以外的单体衍生的单体;(C) 聚合所述
丙烯腈单体以形成由
丙烯腈组成的聚合物。在一个实施方案中,步骤(A)中的可聚合混合物还包括至少一种
丙烯腈以外的可聚合共聚单体,而步骤(C)中形成的聚合物是由
丙烯腈和所述至少一种其他可聚合共聚单体组成的共聚物或多组分共聚物。