专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH10296004A METHOD FOR RECOVERYING BORON TRIFLUORIDE COMPLEX 失效
公开(公告)号：JPH10296004A
公开(公告)日：1998-11-10
申请号：JP6061998
申请日：1998-02-25
申请人： NIPPON PETROCHEMICALS CO LTD
发明人： TAKASHIMA TSUTOMU , SUMIYAMA YOSHISUKE , NISHIKIDA SHIGERU , TOKUMOTO YUICHI , FUJIMURA KOJI
IPC分类号： B01D17/06 , C07F5/02
摘要： PROBLEM TO BE SOLVED: To recover a complex from a nonelectroconductive fluid under a state as it is by a method wherein boron trifluoride complex is separated by precipitation from nonelectroconductive fluid by applying a DC/AC voltage to the nonelectroconductive fluid wherein boron trifluoride complex is dispersed, and the separated complex is recovered. SOLUTION: In the case where boron trifluoride complex as a catalyst is recovered from a fluid, a voltage is applied so that a field strength of a DC and/or AC voltage is within a range of 0.001-40 kV/mm, and it is so adjusted that a temperature of nonelectroconductive fluid when the voltage is applied, is within a range of -100 to 50 deg.C, boron trifluoride is deposited by separation from the nonelectroconductive fluid, and the separated complex is recovered. Then, in this case, as a complex-making agent with which the boron trifluoride and the complex are formed, that to be selected from a group composed of polar compound, for example, water, alcohols, ethers, ketones, etc., is used, and in this case a mol ratio of the boron trifluoside and complexing agent with which the complex is formed is set to be within a range of (0.01:1) to (2:1).

2. 发明专利

JPH10306128A PRODUCTION OF BUTENE POLYMER 失效
公开(公告)号：JPH10306128A
公开(公告)日：1998-11-17
申请号：JP7670898
申请日：1998-03-09
申请人： NIPPON PETROCHEMICALS CO LTD
发明人： TAKASHIMA TSUTOMU , TOKUMOTO YUICHI , NISHIKIDA SHIGERU
IPC分类号： C08F4/14 , C08F210/08
摘要： PROBLEM TO BE SOLVED: To obtain a high yield of a butene polymer which allows the use of low-cost raw material, can reduce the catalyst cost, contains a highly reactive terminal vinylidene structure, and has a narrow molecular weight distribution by adding a complex catalyst consisting of boron trifluoride and a dialkyl ether to an olefin component comprising a C4 fraction and subjecting the mixture to liquid-phase polymerization while recovering the complex catalyst for recycling. SOLUTION: A complex catalyst consisting of boron trifluoride and a dialkyl ether of which the number of carbon atoms of each alkyl group is 1 to 8 and in which the carbon atoms bound to an oxygen atom are each a primary carbon atom is added in an amount of 0.1-500 mM in terms of boron trifluoride to an olefin component comprising a C4 fraction consisting of 10-40 wt.% butene-1, 1-40 wt.% butene-2, 35-70 wt.% isobutene, 10-30 wt.% butanes, and at most 0.5 wt.% butadiene, and the mixture is subjected to liquid-phase polymerization at -100 to +50 deg.C for 5 min to 4 hr. On the other hand, the complex catalyst having the same molar ratio of boron trifluoride to the ether as that before the reaction is recovered for circulating through the liquid-phase polymerization region.

3. 发明专利

JPH10298114A PRODUCTION OF OLEFIN OLIGOMER 失效
公开(公告)号：JPH10298114A
公开(公告)日：1998-11-10
申请号：JP6061898
申请日：1998-02-25
申请人： NIPPON PETROCHEMICALS CO LTD
发明人： TAKASHIMA TSUTOMU , SUMIYAMA YOSHISUKE , NISHIKIDA SHIGERU , TOKUMOTO YUICHI , FUJIMURA KOJI
IPC分类号： C07C2/32 , C07B61/00 , C07C7/00 , C07C11/02 , C08F4/14 , C08F6/08 , C08F10/00
摘要： PROBLEM TO BE SOLVED: To provide a method for producing an olefin oligomer, intended to recover a complex catalyst in a reusable form from a reaction mixture and conduct the reaction again by use of the recovered complex catalyst. SOLUTION: This method for producing an olefin oligomer is made up of the following consecutive processes: (I) an olefin is polymerized in a liquid phase in the presence of a catalyst composed of boron trifluoride and a complexing agent; (II) after the polymerization, DC and/or AC voltage(s) is applied to a reaction mixture with the catalyst dispersed and/or dissolved therein to effect sedimentation/separation of the catalyst by making use of specific gravity difference; (III) the catalyst separated from the reaction mixture is recovered; and (IV) at least part of the recovered catalyst is reused for the liquid phase polymerization.

4. 发明专利

JPH07195477A METHOD AND DEVICE FOR PRODUCING RESIN SHEET HAVING FOAMING CAPABILITY 失效
公开(公告)号：JPH07195477A
公开(公告)日：1995-08-01
申请号：JP35337893
申请日：1993-12-29
申请人： NIPPON PETROCHEMICALS CO LTD
发明人： ISHIDA MASARU , KEZUKA KIYOHISA , NISHIKIDA SHIGERU
IPC分类号： B29C47/00 , B29C47/40 , B29C47/78 , B29K105/04 , B29L7/00
摘要： PURPOSE:To realize method and device for producing an unfoamed sheet superior in surface state and smoothness. CONSTITUTION:In a production device of a resin sheet having a foaming capability, a foamable melt resin extruded from a die is quickly cooled to have a solid phase while being inhibited from foaming. The production device comprises a die 1 extruding a melt resin, a cooling medium liquid tank 3 disposed below the die 1, a level adjusting mechanism 10 adjusting a level in the cooling medium liquid tank 3, a pair of clamping rolls 11, 12 provided in the cooling medium liquid tank 3, and a displacing mechanism for vertically displacing the clamping rolls 11, 12.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式