公开(公告)号：EP0078053A2

公开(公告)日：1983-05-04

申请号：EP82109897.7

申请日：1982-10-26

申请人： ETHYL CORPORATION

发明人： Hsueh, Ming Li

IPC分类号： C08G79/02

CPC分类号： C01B21/0986

摘要： Linear phosphonitrilic chloride polymers are produced from linear phosphonitrilic chloride oligomers by means of a two-step process. In the first step a mixture of linear phosphonitrilic chloride oligomer having an average degree of polymerization of at least 4 is heated with an excess of ammonia or ammonium chloride. Cyclic phosphonitrilic chloride oligomer formed during the course of the first step is removed from the reaction mixture. After the removal of the cyclic oligomer the reaction mixture is subjected to the second step which involves heating the mixture in an inert liquid solvent (optionally in the presence of ammonia or amonium chloride) whereby the molecular weight of the linear phosphonitrilic chloride polymer is increased.

公开(公告)号：EP0078053B1

公开(公告)日：1986-03-05

申请号：EP82109897.7

申请日：1982-10-26

申请人： ETHYL CORPORATION

发明人： Hsueh, Ming Li

IPC分类号： C08G79/02

CPC分类号： C01B21/0986

公开(公告)号：EP0078053A3

公开(公告)日：1983-09-21

申请号：EP82109897

申请日：1982-10-26

申请人： ETHYL CORPORATION

发明人： Hsueh, Ming Li

IPC分类号： C08G79/02

CPC分类号： C01B21/0986

摘要： Linear phosphonitrilic chloride polymers are produced from linear phosphonitrilic chloride oligomers by means of a two-step process. In the first step a mixture of linear phosphonitrilic chloride oligomer having an average degree of polymerization of at least 4 is heated with an excess of ammonia or ammonium chloride. Cyclic phosphonitrilic chloride oligomer formed during the course of the first step is removed from the reaction mixture. After the removal of the cyclic oligomer the reaction mixture is subjected to the second step which involves heating the mixture in an inert liquid solvent (optionally in the presence of ammonia or amonium chloride) whereby the molecular weight of the linear phosphonitrilic chloride polymer is increased.