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公开(公告)号：US20180127524A1
公开(公告)日：2018-05-10
申请号：US15795638
申请日：2017-10-27
IPC分类号： C08F110/10 , C08F2/01 , C08F2/06 , C08F2/38 , C07C22/04
CPC分类号： C08F110/10 , C07C22/04 , C08F2/01 , C08F2/06 , C08F2/38 , C08F2400/02 , C08F2500/04 , C08F2810/30 , C08F2810/40 , C08F2500/01 , C08F2500/02 , C08F4/16
摘要： In one or more embodiments, the present invention provides a method for forming allyl telechelic polyisobutylene polymers having well defined molecular weights and molecular weight distributions using living cationic polymerization under ideal temperature control using a mixture of polar and nonpolar refluxing solvents. The methods according to various embodiments of the present invention provide temperature control that approaches the ideal, i.e., the heat of polymerization is instantaneously absorbed by the medium and the temperature of the system remains unchanged. The heat generated during the exothermic polymerization of isobutylene is released as an increase in the rate of reflux, rather than the temperature, since the temperature is set by the boiling point of the system and does not change.
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公开(公告)号：US10329361B2
公开(公告)日：2019-06-25
申请号：US15795638
申请日：2017-10-27
IPC分类号： C08F110/10 , C08F2/01 , C08F2/06 , C08F2/38 , C07C22/04
摘要： In one or more embodiments, the present invention provides a method for forming allyl telechelic polyisobutylene polymers having well defined molecular weights and molecular weight distributions using living cationic polymerization under ideal temperature control using a mixture of polar and nonpolar refluxing solvents. The methods according to various embodiments of the present invention provide temperature control that approaches the ideal, i.e., the heat of polymerization is instantaneously absorbed by the medium and the temperature of the system remains unchanged. The heat generated during the exothermic polymerization of isobutylene is released as an increase in the rate of reflux, rather than the temperature, since the temperature is set by the boiling point of the system and does not change.
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