The process includes the recycling of unreacted ethanol to the process, feeding the charge to the initial reactor at a pressure of 20 to 40 atmospheres, withdrawing the ethene from the final reactor at a pressure of no less than 18 atmospheres, and passing at least a portion of said ...
Ethene/carbon monoxide copolymers were prepared using the catalyst system Cu(OAc)2/dppp (1,3-bis(diphenylphosphino)propane)/p-toluenesulfonic acid (p-TsOH) or BF3·OEt2/p-benzoquinone. Pyrolysis-gas chromatography proves the alternating structure of the copolymers.DOI: 10.1002/1521-3927(20010501)...
8e). Then, based on the above gene regulation model of somatic embryogenesis, some core regulatory genes that involved in auxin transport, ethene response, cytokinin response, and wound induced were selected as the target gene for further functional analysis (Additional file 4: Table S3). Among...
Preparation and antioxidant activity of α-pyridoin and its derivatives Focusing on α-pyridoin (, 1,2-di(2-pyridyl)-1,2-ethenediol) as the lead compound of the novel antioxidative enediol, we synthesized 5,5′- or 6,6′-bis-su... M Hatanaka,K Takahashi,S Nakamura,... - 《Bioorga...
Factory Direct Sell 95%/96%/99% Ethanol for Preparation of Solvents, Find Details and Price about CAS No. 64-17-5 Industrial from Factory Direct Sell 95%/96%/99% Ethanol for Preparation of Solvents - Shandong Near Chemical Co., Ltd.
3.The process according to claim 1, wherein ethene and/or propene are prepared, and wherein the olefinic co-feed comprises only olefins having 4 or more carbon atoms. 4.The process according to claim 1, wherein the ratio of mol oxygen-bonded alkyl groups in the oxygenate feed to mol ol...
N2O5 freezes out, if the gas mixture is flowed through a glass trap that is kept in a dry ice or a mixture of liquid nitrogen/ethanol bath. The temperature of the trap should be around 193 K 148 D. M. Bell et al. Fig. 4.7 Set-up for producing frozen N2O5 crystals using a vacuum...
maintained for 60 minutes from addition of the catalyst. From the 15th minute, the reactor pressure was brought to and kept at 23.7 bar by metering in ethene, the total amount of ethene metered in up to the 60th minute being 360 g. The speed of rotation of the stirrer was then lowered...
(meth)-acrylamides, N,N-C1-C4-dialkylacrylamides, N-vinylpyrrolidone, N-vinylpiperidone, N-vinylcaprolactam, N-vinylformamide, N-vinylacetamide, N-vinyl-N-methylacetamide, N-vinyl-O-methylurethane, ethene or vinyl methyl ether and as reactive group introducer monomer units maleic anhydride, ...
The invention relates to a process for the preparation of a creep-resistant polypropylene by means of the following steps: (a) copolymerizing propylene and ethylene into a random copolymer at 40 to 11