Ethylene-butadiene polymer

Solvents Propylene L Acids Ethylene Butadiene Polymers... 

Acrylics. Acetone is converted via the intermediate acetone cyanohydrin to the monomer methyl methacrylate (MMA) [80-62-6]. The MMA is polymerized to poly(methyl methacrylate) (PMMA) to make the familiar clear acryUc sheet. PMMA is also used in mol ding and extmsion powders. Hydrolysis of acetone cyanohydrin gives methacrylic acid (MAA), a monomer which goes direcdy into acryUc latexes, carboxylated styrene—butadiene polymers, or ethylene—MAA ionomers. As part of the methacrylic stmcture, acetone is found in the following major end use products acryUc sheet mol ding resins, impact modifiers and processing aids, acryUc film, ABS and polyester resin modifiers, surface coatings, acryUc lacquers, emulsion polymers, petroleum chemicals, and various copolymers (see METHACRYLIC ACID AND DERIVATIVES METHACRYLIC POLYMERS). 

NR, natural mbber CR, chloroprene SRs, synthetic mbbers IR, natural isoprene SBR, styrene—butadiene mbber BR, butadiene EPDM, ethylene—propjiene-diene EPM, ethylene—propylene polymer HR, isobutylene—isoprene NBR, nitrile—butadiene. 

In these equations I is the initiator and I- is the radical intermediate, M is a vinyl monomer, I—M- is an initial monomer radical, I—M M- is a propagating polymer radical, and and are polymer end groups that result from termination by disproportionation. Common vinyl monomers that can be homo-or copolymeri2ed by radical initiation include ethylene, butadiene, styrene, vinyl chloride, vinyl acetate, acrylic and methacrylic acid esters, acrylonitrile, A/-vinylirnida2ole, A/-vinyl-2-pyrrohdinone, and others (2). 

In this contribution, in order to illustrate tlie importance of shake-up bands for extended systems, we simulate and compare on correlated grounds the ionization spectra of polyethylene and poly acetylene, the most simplest systems one can consider to represent insulating or semi-conducting polymers. Conclusions for the infinite stereoregular chains are drawn by exU apolation of the trends observed with the first terms of the related n-alkane or acene series, CnH2n+2 and CnHn+2. respectively, with n=2, 4, 6 and 8. Our simulations are also compared to X-ray photoionization spectra (7) recorded on gas phase samples of ethylene, butadiene and hexatriene, which provide a clear experimental manisfestation of the construction of correlation bands (8-12). 

Scheme 8 Several pathways in ethylene/butadiene co-polymerizations leading to unique-structure polymers.

Some conducting polymers with a conjugated polyvinyl structure, such as polyacetylene and poly(phenylacetylene), seem likely to be energetic enough, and reactive enough, to give trouble undoped, if they actually have the supposed structure [7]. See Ethylene, Butadiene, Styrene See related NON-METAL PERCHLORATES... 

Indicate cycloolefin monomers that will be polymerised by metathesis catalysts to polymers with a structure equivalent to polybutadiene, an alternating ethylene/ butadiene copolymer, an alternating butadiene / isoprene copolymer and polyacetylene. 

Organic peroxides are used to initiate free-radical polymerization of ethylene, butadiene, styrene, vinyl chloride, vinyl acetate, and methyl methacrylate. They are also used to cure unsaturated polyesters, occasionally to cross-link thermoplastics such as polyethylene and polyacrylates, and increasingly for grafting and compatibiliza-tion of polymer blends. A variety of organic peroxides offer useful reactivity over a temperature range from 0 to 130°C or more, for different polymers and different processes. 

The three layers consisted of a fluoropol5mier inner layer, a polyolefin outer layer, and an intermediate tie layer that bonded them. The tie layer consisted of a polymer containing a blend of polyethylene-vinyl acetate and a block copolymer of styrene-ethylene-butadiene-styrene (SEES) or styrene-buta-diene-styrene (SBS) at a weight ratio in the range of 10 90 to 90 10. 

Commercial IPNs have been developed to combine useful properties of two or more polymer systems. For example, high levels of silicone have been combined with the thermoplastic elastomer (TPE) based on Shells Kraton styrene-ethylene/butadiene-styrene TPE and Monsantos Santoprene olefin TPE. These IPN TPEs are said to provide the biocompatibility and release properties of silicone with tear and tensile strength up to five times greater than medical-grade silicone. Thermal and electronic properties and elastic recovery are also improved. 

Slyrene-ethylene/butylene-styrene block copolymer Poly (styrene-co-allyl alcohol). See Styrene/allyl alcohol copolymer Poly (styrene-co-butadiene). See Styrene/butadiene polymer Poly (styrene-co-maleic anhydride). See Styrene/MA copolymer Polystyrene latex Polystyrene resin. See Polystyrene Polystyrene, sulfonated. See Sodium polystyrene sulfonate... 

Glyceryl behenate Hydrogenated cottonseed oil Hydrogenated palm oil binder, carbon arc-light electrodes Potassium silicate binder, carpet backing Styrene/butadiene polymer binder, catalysts Silica, colloidal binder, caulks Vinyl acrylic copolymer binder, cement Polyacrylamide Sulfur binder, cementitious surfaces Potassium silicate binder, ceramic Ethylene/MA copolymer binder, ceramic fibers Silica, colloidal binder, ceramic glazes Hydroxyethylcellulose Methylcellulose binder, ceramic paste Ethyl silicate... 

Methyl oleate Styrene/butadiene polymer extrusion aid, polyolefins food packaging Dimethicone copolyol extrusion copolymer, coatings Ethylene/methacrylic acid copolymer extrusion copolymer, film Ethylene/methacrylic acid copolymer extrusion copolymer, sheet Ethylene/methacrylic acid copolymer extrusion resin... 

Polyarylate resin Polyarylether ketone resin Polyester carbonate resin Polyetherimide resin Polyethylene, chlorinated Polyethylene glycol Polyethylene, medium density Poly (p-methylstyrene) Poly (p-methylstyrene), rubber-modified Poly (oxy-1,2-ethanediyloxycarbonyl-2,6-naphthalenediylcarbonyl) resin Poly (oxy-p-phenylenesulfonyl-p-phenyleneoxy-p-phenyleneisopropylidene-p-phenylene) resin Poly (phenyleneterephthalamide) resin Polysulfone resin Poly (tetramethylene terephthalate) Polyvinylidene chloride Potassium sorbate Potato (Solanum tuberosum) starch Silica, colloidal Silicone Sodium N-alkylbenzenesulfonate Sodium bicarbonate Sodium tetraborate pentahydrate Starch, pregelatinized Styrene/acrylates copolymer Styrene/butadiene polymer Styrene/DVB copolymer , 1,1 -Sulfonylbis (4-chlorobenzene) polymer with 4,4 -(1-methylethylidene) bis (phenol) and 4,4 -sulfonylbis (phenol) Synthetic wax Tapioca starch Tetrafluoroethylene/perfluoro (propyl vinyl ether) copolymer Tocopherol Triglycidyl isocyanurate VA/crotonates copolymer Vinyl chloride/ethylene copolymer Wheat (Triticum vulgare) starch... 

Styrene/butadiene polymer food-contact articles, interior core layer Ethylene/carbon monoxide copolymer food-contact articles, multilaminate Ethylene/carbon monoxide copolymer food-contact coating copolymer, metal Sodium 2-sulfoethyl methacrylate food-contact coatings Glyceryl rosinate Methyl rosinate Pentaerythrityl rosinate food-contact polymers Iron oxides... 

Ficin Helium Isopropyl titanium triisostearate Methyl rosinate PEG-4 isostearate PEG-14 isostearate Pentaerythrityl stearate 1,2-Polybutadiene Polyethylene elastomer, chlorinated Polyethylene wax Potassium rosinate 2-Propenoic acid, 2-methylmethyl ester, polymer with 1,3-butadiene and butyl 2-propenoate Styrene/butadiene polymer Styrene-ethylene/butylene-styrene block copolymer Synthetic wax... 

Polypropylene (PP) and polystyrene (PS) are important commodity polymers however, blertds of PP and PS are immiscible and several reports describe the use of commercial block copolymers such as styrene—butadiene—styrene (SBS), styrene-ethylene—butadiene—styrene (SEBS), styrene-ethylene—propylene (SEP), and styrene—isoprene—styrene (SIS) as nonreactive compatibilizers to achieve a finer morphology and improved performance in their blends (Bartlett et al. 1981 Radonjic et al. 1998 Hlavata et al. 1999 Raghu et al. 2003). However, the block copolymers may tend to form micelles due to their high molecular weight... 

Mae, H. Omiya, M. Kishimoto, K., Tensile Behavior of Polypropylene Blended with Bimodal Distribution of Styrene-Ethylene-Butadiene-Styrene Particle Size. J.Appl. Polym. Sci. 2008,107, 3520-3528. 

Ciolino, A. Sakellariou, G. Pantazis, D. Villar, M. A. Valles, E. Hadjichristi-dis, N., Synthesis and Characterization of Model Block Copolymers of Poly(dimethylsiloxane) with Poly(l,4-butadiene) or Poly(ethylene). J. Polym. Set, Part A Polym. Chem. 2006,44,1579-1590. 

Styrene block copolymers are the most widely used TPEs. Styrenic TPEs are usually styrene butadiene styrene (SBS), styrene ethylene butadiene styrene (SEES), and styrene isoprene styrene (SIS). Styrenic TPEs usually have about 30 0 percent bound styrene. Principal styrenic TPE markets are molded shoe soles and other footwear, extruded film/sheet and wire/cable covering, and pressure-sensitive and hot-melt adhesives. They are also popular as grips for bike handles, kitchen utensils, clear medical products, and personal care products. Styrenic block copolymer thermoplastic elastomers are produced by Shell Chemical (Kraton), Firestone Synthetic Rubber and Latex, Division of Bridgestone/Firestone (Stereon), Dexco Polymers (Vector), EniChem Elastomers (Europrene), and other companies. 

Only a relatively small number of polymers have sufficient mobility to be rubbery at room temperature. The molecular mobility depends heavily on the composition of the polymer backbone, which often contains a significant proportion of simple hydrocarbon species, such as those derived from ethylene, butadiene or isoprene. These species are small and are able to undergo bond rotation with relative ease, since they do not suffer problems due to steric hindrance [2] or the presence of strong dipoles. The rubber molecule is also able to undergo extension easily because the forces acting on the material are relatively weak secondary intermolecular forces, i.e., those acting between molecules, and not the primary inter-atomic forces, i.e., those existing within a molecule [3]. 

The Swiss company, WW Fischer, offers PTFE (Teflon PTFE or Hostaflon), PBT (Celanex, Crastin, Ultradur or Valox) or PEEK (Victrex) insulator material options in its 405 series of cylindrical connectors according to the requirements of working temperature and other criteria. PEEK is an expensive polymer which tends to be employed when other materials fail to meet the specification requirements of the application. Other Fischer connector types use polyamide-imide (Torlon) or POM (Celcon, Delrin or Hostaform). Elastomeric seals used by Fischer in conjunction with their connectors are made from acrylonitrile-butadiene rubber (NBR N BUNA) or to MIL-P-25732, fluoroelastomer (FPM VITON), polychloroprene elastomer (CR Neoprene), ethylene-propylene diene elastomer (EPDM) and styrene-ethylene-butadiene-styrene thermoplastic elastomer (TPE-S or TPE-O) where each compound is followed by its trade name. Fischer s Swiss competitor, Lemo, manufactures a similar range of connectors including the Redel types which have a plastic body. 

Ethylene-co-butadiene polymer (mostly trans-ly4-) Polybutadiene Polyisobutylene HD Polyethylene Polypropylene... 

General purpose Ethylene-co-butadiene polymer W. Germany 2,434,668 1975 Mitsui Petrochemical... 

In order to UV-stablllze elastomers, the elastomer selection Is as decisive as the choice of additives. Highly unsaturated elastomers such as butadiene polymers and co-polymers should be avoided. For example, styrene-ethylene-butadlene-sty-rene (SEES) is characterized by clearly superior weathering resistance than the analogous SBS block copolymer [544]. 

Other than this example, they also studied a wide variety of polymers, such as ethylene-butadiene copolymer, ethylene-vinylacrylate copolymer, and their branched polymers. They indicated that, for cases where the junction zone includes crystals, they could not verify functionality, which is equivalent to the number of polymers that form the junction zone. 

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