Ethylene olefination

ATBN - amine terminated nitrile rubber X - Flory Huggins interaction parameter CPE - carboxylated polyethylene d - width at half height of the copolymer profile given by Kuhn statistical segment length DMAE - dimethyl amino ethanol r - interfacial tension reduction d - particle size reduction DSC - differential scanning calorimetry EMA - ethylene methyl acrylate copolymer ENR - epoxidized natural rubber EOR - ethylene olefin rubber EPDM - ethylene propylene diene monomer EPM - ethylene propylene monomer rubber EPR - ethylene propylene rubber EPR-g-SA - succinic anhydride grafted ethylene propylene rubber... 

It now becomes of interest to know what the effects will be if both methylation and unsaturation are present in the same molecule. In a previous paper, it was pointed out that the ethylene olefins may be classified into five types (6) ... 

Olefins. Olefin is a key surfactant intermediate produced by thermal or catalytic cracking of paraffin or alternatively from oligomization of ethylene. Olefins suitable for surfactant production are primarily linear with either terminal (a-olefins) or internal (i-olefins) double bonds. 

Stone Webster Inc., a Shaw Group Co. Ethylene Olefins... 

The process is based on the previous observation that in the absence of ethylene, olefins alkylate TEA in proportion to the concentration of each individual olefin present in the alkylation mixture. Thus, the distribution of alkyl groups of the alkylated TEA will be equal to the olefin chain length distribution fed to the alkylator. 

HDPE exists as both a homopolymer and a copolymer with higher ethylene olefins. The latter offers properties which lie between low and high density, with typical densities of 0.945-0.950. Copolymers have found wide usage for extrusion blow, injection blow and injection moulding. They are, however, generally classified under HDPE. Virtually all high density polyethylenes contain an antioxidant. 

The co-polymerization of ethylene (olefins) with CO to produce polyketones... 

Olean-12-en-30-oic acid, 3-P-hydroxy-11-oxo-, hydrogen succinate, disodium salt. See Disodium succinoyl glycyrrhetinate Olean-12-en-29-oic acid, 3-(1-oxooctadecyloxy)-11-OXO-, (3-P)-. See Glycyrrhetinyl stearate Olefiant gas. See Ethylene Olefin/acrylate copolymer CAS 67892-91-5... 

Isotactic pol5uners of 1-olefins higher/larger than propylene has been accomplished with metallocenes, as would be expected from the enhanced ability of these catalysts to incorporate large comonomers in ethylene-olefin copol5unerization. 

Industrial processes are categorized as petrochemical, refinery, environmental, or gas processes. There are hundreds of different processes, and the overall total has been expanded significantly by the petrochemical and environmental. The more common petrochemical processes use ethylene, olefins, benzene, ammonia, and aromatics. Refinery operations include traditional crude distillation, reforming, cracking, isomerization coking, and alkylation. Environmental systems are applied to water treatment, air pollution, solid waste, and toxic waste. 

Ethylene Olefin Mitsubishi Chem. Higher alcohol Detergents Epoxy alkanes... 

Until they are vulcanized, elastic, amorphous ethylene-olefinic copolymers have very little possible utility except as components of caulks or sealants. However, grafting MA on the copolymers, using peroxide initiators, and compounding the modified materials with zinc oxide provides improved rubbers. A typical recipe would consist of 100 parts ethylene-propylene copolymer, 20 parts zinc oxide, 7 parts MA, and 2 parts BPO. Curing is carried out at 160°C for 30-45 min. Previously grafted copolymers, containing 2-5 MA residues, can also be cured with N-phenyl-B-naphthylamine initiator, steric acid modifier, and zinc oxide crosslinker. 

Markets for olefins inereased dramatieally when the polyolefins were developed and beeame tremendously important. Today, some 200 years after the discovery of ethylene, olefins are produced in large quantities because of their value as intermediates in... 

This relationship was applied to analyze the crystallization data of six different sets of ethylene statistical copolymers [96]. In all cases, a linear relationship between logA// and logX was observed. Furthermore, the values of m determined for ethylene-olefin copolymers were found to be in the range of 6-13, in good agreement with the critical sequence length proposed by Randall and Ruff based on NMR data and modeling considerations [97]. 

ATRP is successfully employed in the polymerization of a large variety of vinyl monomers such as styrenes, methacrylates, acrylates, acrylonitrile, and some others [2,9-15]. However, at present, available catalytic systems seem to be unsuitable for the less reactive monomers such as ethylene, olefines, vinyl chloride, and vinyl acetate. In the polymerization of monomers with strong electron-donating groups such as /7-methoxy styrene, some side reactions arising from the involvement of cationic intermediate are observed. Acrylic and methacrylic acids are also not prone to ATRP because they form Cu(II) carboxylates, which are inefficient deactivators. However, hydroxy derivatives such as hydroxyethyl acrylate and hydroxyethyl methacrylate can be polymerized by ATRP. 

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