3048-64-4Relevant academic research and scientific papers
Synthesis of 5-vinyl-2-norbornene through Diels–Alder reaction of cyclopentadiene with 1,3-butadiene in supercritical carbon dioxide
Meng, Fan-Qiang,Feng, Xiu-Juan,Wang, Wan-Hui,Bao, Ming
, p. 900 - 904 (2017)
An efficient method for the synthesis of 5-vinyl-2-norbornene from cyclopentadiene and 1,3-butadiene was developed. The Diels–Alder reaction of cyclopentadiene with 1,3-butadiene proceeded smoothly in supercritical carbon dioxide in the absence of any pol
Method for Production of 5-Vinyl-2-Norbornene Using Porous Titanosilicate Catalyst
-
Paragraph 0036-0040; 0045-0046, (2020/09/10)
The present invention relates to a method for manufacturing 5-vinyl-2-norbornene (VNB) by conducting reaction of cyclopentadiene (CPD) with 1,3-butadiene (BD). The method uses a porous titanosilicate catalyst, thereby providing an effect of increasing the selectivity of VNB and reducing the selectivity of by-product oligomer.(AA) CPD conversion ratio (%)(BB) VNB selectivity (%)(CC) THI selectivity (%)(DD) DCPD selectivity (%)(EE) Oligomer selectivity (%)(FF) Conversion ratio and selectivity (%)COPYRIGHT KIPO 2020
Method for Preparation of 5-Vinyl-2-Norbornene
-
Paragraph 0027-0038, (2020/09/02)
The present invention relates to a method for preparing 5-vinyl-2-norbornene (VNB) by making cyclopentadiene (CPD) react with butadiene. The present invention uses a non-polar solvent having a relative polarity of 0.15 or less for a reaction, and thus can reduce selectivity of oligomers and THI, which are non-reusable byproducts, and increase the selectivity of 5-vinyl-2-norbornene.(AA) DCP pyrolysis(BB) VNB synthesis(CC) THI separation(DD) BD/CPD separation(EE) VCH separation(FF) VNB separationCOPYRIGHT KIPO 2020
METHOD OF PREPARING 5-VINYL-2-NORBORNENE THROUGH ALKOXYLATION
-
Paragraph 0035; 0038, (2020/09/01)
The present invention provides a method for producing 5-vinyl-2-norbornene with excellent selectivity and in high yield from cyclopentadiene and 1,3-butadiene using an alkoxylation reaction.COPYRIGHT KIPO 2020
Method for Production of 5-Vinyl-2-Norbornene Using Zeolite Catalyst substituted with Sn
-
Paragraph 0037-0038; 0048, (2020/09/01)
The present invention relates to a method for producing 5-vinyl-2-norbornene (VNB) by inducing a Diels-Alder reaction of cyclopentadiene (CPD) and 1,3-butadiene (BD). The present invention provides an effect of increasing selectivity of 5-vinyl-2-norbornene and decreasing selectivity of an oligomer which is a byproduct by using a zeolite catalyst substituted with tin.(AA) CDP conversion ratio (%)(BB) VNB selectivity (%)(CC) THI selectivity (%)(DD) DCPD selectivity (%)(EE) Oligomer selectivity (%)(FF) Conversion ratio and selectivity (%)COPYRIGHT KIPO 2020
METHOD OF PREPARING 5-VINYL-2-NORBORNENE USING XYLENE AS SOLVENT
-
Paragraph 0019-0023, (2020/09/01)
The present invention provides a method for preparing 5-vinyl-2-norbornene, comprising a step of making cyclopentadiene react with 1,3-butadiene in the presence of a xylene solvent. According to the present invention, the selectivity of 5-vinyl-2-norbornene and the yield thereof can be remarkably improved by using the xylene solvent.COPYRIGHT KIPO 2020
A multi-out live pressure tubular reactor synthetic vinyl norbornene
-
Paragraph 0044-0046, (2017/07/05)
The invention discloses a method for synthesizing vinyl norbornene by using a one-inlet and multiple-outlet variable pressure type tubular reactor, wherein more than two discharge openings are formed in a reaction channel of the tubular reactor in the flowing direction of a material and the pressure is gradually decreased. The method comprises the following step: jointly inputting a cyclopentadiene solution and 1, 3-butadiene from a feed inlet at one time into the reaction channel of the tubular reactor so as to obtain the vinyl norbornene, wherein the reaction temperature of the reaction channel is 120-220 DEG C, the pressure is 20-2MPa and the standing time is 24-120 minutes, and the cyclopentadiene solution consists of cyclopentadiene, dicyclopentadiene and possible inert organic solvents. The invention belongs to a method for safely and efficiently synthesizing vinyl norbornene by using the one-inlet and multiple-outlet variable pressure type tubular reactor.
Through the multi-side live pressure tubular reactor synthesis method of the ethylidene norbornene
-
Paragraph 0043; 0044; 0045; 0046, (2017/08/02)
The invention discloses a method for synthesizing ethylidene norbornene by virtue of a multi-lateral-line pressure-variable tubular reactor. The reaction channel of the tubular reactor is provided with a starting material inlet and at least two lateral-line material inlets and the pressure is reduced gradually. The method comprises the following steps: 1) feeding a cyclopentadiene solution into the reaction channel of the tubular reactor from the starting material inlet and feeding 1,3-butadiene into the reaction channel of the tubular reactor from the starting material inlet and any one or more lateral-line material inlets, enabling the cyclopentadiene solution and 1,3-butadiene to have a Diels-Alder addition reaction in the reaction channel of the tubular reactor to obtain vinyl norbornene; 2) performing isomerization on the obtained vinyl norbornene in the tubular reactor subsequently filled with a super basic catalyst to obtain ethylidene norbornene, wherein the reaction temperature is between -10 DEG C and 50 DEG C and the dwell time is 10-69min.
5-ethylidene-2-norborene ENB method for the production of (by machine translation)
-
Paragraph 0020-0026, (2017/05/26)
The invention relates to a production method for ENB (5-ethylene-2-norbornylene) and mainly aims to solve the problems in the prior art that the purity of a product is low and the energy consumption is high. The adopted production method for the ENB comprises the following steps: (1) raw materials and a solvent are sent to a first reaction vessel through a static mixer; (2) the reaction product in the first reaction vessel enters into a light component removing tower, tower top light components return to the first reaction vessel and tower kettle heavy components enter into a heavy component removing tower; (3) the kettle components of the heavy component removing tower enter into a DCPD tower, and tower top distilled liquid is purified to obtain a DCPD product; (4) the heavy component removing tower kettle components enter into a VCH tower, the VCH is obtained at the tower top; tower kettle components enter into a VNB tower, THI is obtained in a VNB tower kettle and the VNB is obtained at the tower top; (5) VNB enters into an isomerization reaction vessel to obtain ENB. The problems are better solved by the technical scheme and the production method can be applied in the ENB production.
Ultrahigh Tg Epoxy Thermosets Based on Insertion Polynorbornenes
Commarieu, Basile,Potier, Jonathan,Compaore, Moubarak,Dessureault, Sylvain,Goodall, Brian L.,Li, Xu,Claverie, Jerome P.
, p. 920 - 925 (2016/03/09)
Thermosetting materials (thermosets) are widely used organic materials derived from 3D-network forming monomers. Achieving high glass transition temperature (Tg) thermosets is often a challenging task due to the complexity of designing efficiently and cheaply monomers which are rigid enough to prevent molecular motions within the thermoset. We report here a very simple route to prepare epoxy thermosets with Tg as high as 350 °C, based on insertion polynorbornenes. The epoxy monomer (PNBE(epoxy)) is prepared by the epoxidation of poly(5-vinylnorbornene) obtained by catalytic insertion polymerization of 5-vinylnorbornene. PNBE(epoxy) can be cross-linked with simple biosourced compounds. Alternatively, polar insertion polynorbornene can also be used as cross-linker in the formulation of an epoxy resin, once again resulting in epoxy resins with Tg higher than 300 °C and devoid of degradation at this temperature. Thus, this study clearly demonstrates the viability of catalytic polymerization to access epoxy thermosets with ultrahigh Tg.

