公开(公告)号：US5003014A

公开(公告)日：1991-03-26

申请号：US526275

申请日：1990-05-21

申请人： Mohammed Tazi ,  John J. Ardan

发明人： Mohammed Tazi ,  John J. Ardan

IPC分类号： C08F2/00 ,  C08F2/02 ,  C08F2/38 ,  C08F6/00 ,  C08F6/06 ,  C08F16/16 ,  C08F20/02 ,  C08F216/18 ,  C08F222/06

CPC分类号： C08F216/18

摘要： What is described herein is a process for making copolymers of maleic anhydride and C.sub.1 -C.sub.4 alkyl vinyl ethers of predetermined specific viscosities extending over a wide viscosity range. The invention is characterized by (a) precharging a reactor with a C.sub.1 -C.sub.4 alkyl vinyl ether as solvent and a polymerization initiator at a reaction temperature, (b) feeding a mixture of maleic anhydride and a C.sub.1 -C.sub.4 alkyl vinyl ether in substantially stoichiometric amounts, preferably with a slight excess of alkyl ether, and at a selected rate, into said precharged reactor, (c) polymerizing said reactants to form a slurry of said copolymer in said escess alkyl vinyl ether solvent, and (d) introducing toluene into said reactor during the polymerization to control the specific viscosity of the copolymer product being produced.

摘要翻译： 本文描述的是制备在宽粘度范围内延伸的具有预定特定粘度的马来酸酐和C 1 -C 4烷基乙烯基醚的共聚物的方法。 本发明的特征在于：（a）在反应温度下用C1-C4烷基乙烯基醚作为溶剂和聚合引发剂预充电反应器，（b）将马来酸酐和C1-C4烷基乙烯基醚的混合物以基本上为化学计量 （c）将所述反应物聚合以形成所述共聚物在所述甲基乙烯基醚溶剂中的淤浆，和（d）将甲苯引入到所述预充电反应器中 所述反应器在聚合过程中控制正在生产的共聚物产品的比粘度。

公开(公告)号：US5034487A

公开(公告)日：1991-07-23

申请号：US565002

申请日：1990-08-09

申请人： Mohammed Tazi ,  John J. Ardan

发明人： Mohammed Tazi ,  John J. Ardan

IPC分类号： C08F216/14 ,  C08F222/06

CPC分类号： C08F222/06 ,  C08F216/14

摘要： What is described herein is a process for making a copolymer of high specific viscosity by polymerization of maleic anhydride and a C.sub.1 -C.sub.4 alkyl vinyl ether monomer. The invention involves polymerizing said monomers to form a slurry of said copolymer in excess alkyl vinyl ether and toluene and is characterized by the steps of: (a) precharging a reactor with C.sub.1 -C.sub.4 alkyl vinyl ether as solvent at a reaction temperature, (b) feeding a mixture of maleic anhydride and a C.sub.1 -C.sub.4 alkyl vinyl ether in substantially stoichiometric amounts, preferably with a slight excess of the alkyl vinyl there, and at a selected rate, into said precharged reactor, and (c) simultaneously feeding a predetermined mixture of toluene and a polymerization initiator continuously over substantially the entire period of polymerization.

摘要翻译： 本文描述的是通过马来酸酐和C1-C4烷基乙烯基醚单体的聚合制备高比粘度的共聚物的方法。 本发明涉及聚合所述单体以形成所述共聚物在过量烷基乙烯基醚和甲苯中的淤​​浆，其特征在于以下步骤：（a）在反应温度下，用C1-C4烷基乙烯基醚作为溶剂预先充入反应器，（b ）以基本上化学计量的量加入马来酸酐和C1-C4烷基乙烯基醚的混合物，优选以稍微过量的其中的烷基乙烯基，并以选定的速率进料到所述预充电反应器中，和（c）同时进料预定的 甲苯和聚合引发剂的混合物在基本上整个聚合期间内连续进行。