The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2018
Filed:
Jun. 18, 2015
Daelim Industrial Co., Ltd., Seoul, KR;
Myeong Seok Kim, Daejeon, KR;
Min Sup Park, Daejeon, KR;
Hyung Jae Seo, Daejeon, KR;
Se Hyun Lee, Daejeon, KR;
Daelim Industrial Co., Ltd., Seoul, KR;
Abstract
Disclosed a method for preparing polybutene by using a catalyst including normal propanol, wherein the polybutene has 40 to 70% of vinylidene content and 10% or more of tetra-substituted double bond content by using a complex catalyst including normal propanol as a cocatalyst and a main catalyst such as boron trifluoride. The method comprises: introducing, to a raw reaction material including 10 wt % or more of isobutene, a complex catalyst including normal propanol as a cocatalyst and boron trifluoride as a main catalyst; and polymerizing the raw reaction material at a reaction temperature of −33 to 33° C. under a reaction pressure of 3 to 50 kg/cm, wherein the vinylidene content is adjusted by adjusting the reaction temperature.