Thermoplastic styrenics

Polystyrene (PS) is the fourth big-volume thermoplastic. Styrene can be polymerized alone or copolymerized with other monomers. It can be polymerized by free radical initiators or using coordination catalysts. Recent work using group 4 metallocene combined with methylalumi-noxane produce stereoregular polymer. When homogeneous titanium catalyst is used, the polymer was predominantly syndiotactic. The heterogeneous titanium catalyst gave predominantly the isotactic. Copolymers with butadiene in a ratio of approximately 1 3 produces SBR, the most important synthetic rubber. [Pg.334]

Romero-Sanchez M.D., Pastor-Bias M.M., and Martm-Martmez J.M., 2002, Improved peel strength in vulcanized SBR rubber roughened before chlorination with trichloroisocyanuric acid, J. Adhes., 78, 15-38. Cepeda-Jimenez C.M., Pastor-Bias M.M., Ferrandiz-Gomez T.P., and Martfn-Martmez J.M., 2001, Influence of the styrene content of thermoplastic styrene-butadiene rubbers in the effectiveness of the treatment with sulfuric acid, Int. J. Adhes. Adhes., 21, 161-172. [Pg.772]

TPEs are not listed in packaging statistics there are only specific uses for thermoplastic styrenics (TPS), copolyester TPEs (COPE) and polyether bloc amides (PEBA) in tearproof films, and for TPOs and TPVs in seals, etc. [Pg.54]

Polyurethanes show particularly good results when used for bonding plasticized poly(vinyl chloride) compositions and good results also with other plastics and rubbers, such as the thermoplastic styrene-butadiene-styrene ( SBS ) copolymers. [Pg.95]

Chlorinated isocyanurate compound in ethyl acetate solvent (for rubbers, especially thermoplastic styrene-butadiene-styrene rubbers)... [Pg.105]

The properties of block copolymers differ from those of a blend of the correponding homopolymers or a random copolymer (Chapter 7) with the same overall composition. An important practical example is the ABA-type styrene/butadiene/styrene triblock copolymer. These behave as thermoplastic elastomers. Ordinary elastomers are cross-linked by covalent bonds, e.g., vulcanization (see Chapter 2) to impart elastic recovery property, as without this there will be permanent deformation. Such cross-linked rubbers are therraosets and so cannot be softened and reshaped by molding. However, solid thermoplastic styrene/butadiene/styrene triblock elastomers can be resoftened and remolded. This can be explained as follows. At room temperature, the triblock elastomers consist of glassy, rigid, polystyrene domains... [Pg.699]

The styrene-diene triblock copolymer consists of individual chains of three blocks, an elastomeric diene block in the center and a thermoplastic styrene block on each end. This polymer is called a thermoplastic elastomer. It exhibits some of the physical properties of elastomers at use temperature and is as pro-cessable as conventional plastics (5). The styrene/diene triblock copolymer has the unique morphology of glassy polystyrene domains in the rubbery diene matrix. Therefore, such an elastomer does not require conventional vulcanization since the glassy polystyrene domains act as physical crosslinks. [Pg.498]

Beiistein Handbook Reference) AI3-08621 BRN 0507434 EINECS 203-674-6 1,3-Dibutylthiourea 1,3-Di-n-butyl-2-thiourea 1,3-Dibutyl-2-thiourea NSC 3735 Pennzone B Pennzone B 0685 Thiate U Thiourea, N,N -dibutyl- Urea, 1,3-dibutyl-2-thio- Urea, 1,3-di-N-butyl-2-thio- USAF EK-2138. Accelerator for mercaptan-modified chlotoprene rubber, an activator for ethylenepropylenediene terpolymers and natural nibber, an antidegradant for natural rubber-latex and thermoplastic styrene-butadiene rubber. Crystals mp = 63-65°. ElfAtochem N. Am. [Pg.194]

Kraton Shell Thermoplastic styrene block copolymer... [Pg.805]

Figure 11.3. Two methods for the synthesis of azobenzene thermopiastic eiasto-mers (a) grafting of an azobenzene-containing side-chain iiquid crystaiiine polymer (azo-SCLCP) onto the thermoplastic styrene-butadiene-styrene (SBS) tribiock copoiymer using radical polymerization, and (b) tribiock copoiymer composed of a rubbery centrai block and two azobenzene SCLCP end blocks synthesized using atom transfer radical polymerization (ATRP).

Synonyms 2,5-Furandione, polymer with ethenylbenzene Maleic anhy-dride/styrene copolymer Maleic anhydride/styrene polymer Poly (sly-rene-co-maleic anhydride) SMA Styrene/maleic anhydride copolymer Styrene/maleic anhydride polymer Styrene/maleic anhydride resin Classification Engineering thermoplastic styrene polymer DeTinltton Polymer of serene and maleic anhydride monomers, with varying ratios of styrene MA of 1 1 to 3 1 Formula (C.H, CiHjO,),... [Pg.1366]

Classification Thermoplastic styrene polymer Definition Similar to polystyrene but with improved heat resist, and optical props. [Pg.4241]

Acrylic elastomer Acrylonitrile-butadiene rubber, hydrogenated Polyethylene, ultrahigh m.w. high-density Polynorbornene Polyurethane elastomer, thermoplastic Styrenated diphenylamine , Styrene-ethylene/butylene-styrene block copolymer seals, chemical-resistant Chlorotrifluoroethylene polymer seals, dynamic aerospace Polyfluoroalkoxyphosphazene seals, dynamic industrial Polyfluoroalkoxyphosphazene seals, dynamic military Polyfluoroalkoxyphosphazene seals, high performance Tetrafluoroethylene/perfluoromethylvinyl ether copolymer seals, oil... [Pg.5636]

Synonyms N,N -dibutyl-thiourea N,N-dibutylthiourea N,N -di-n-butylthiourea i,3-dibutyl-2-thiourea 1,3-dibutylthiourea Uses accelerator for mercaptan-modified chloroprene rubber activator for ethylene-propylene-diene terpolymers and natural rubber antidegradant for natural rubber latex and thermoplastic styrene-butadiene rubber A... [Pg.1207]

Decker, C. and Nguyen thi viet, T., High-speed photo-CTOss-linking of thermoplastic styrene-butadiene elastomers, J. Appl. Polym. ScL, 77, 1902-1912. [Pg.335]

Homogeneous blends of a thermoplastic styrene/methyl methacrylate (SMMA) copolymer and a thermoplastic vinylidene fluo-ride/hexafluoropropylene copolymer which is an excellent processing additive for the extrusion of thermoplastic polyolefin (1). [Pg.115]

A gel made of a thermoplastic styrene-butadiene rubber (SBR) to which asphalt is added is also reported to be a shape memory material [8]. A small amoimt of SBR forms 3D networks in which a large amount of asphalt forms a phase separated structure (both components form co-continuous phase). When this gel is deformed at a low temperature, the plastic deformation of asphalt, which is much harder than SBR, dominates... [Pg.814]

Long Fiber-Reinforced Thermoplastic Styrene Resins for Car Interior Applications... [Pg.259]

The main requirements to the interior parts of a car are attractive appearance combined with good mechanical properties and matching tight tolerances of the part after processing. Thermoplastic styrene-based polymers are often chosen due to the above mentioned aspects. In many cases, neat styrene-based thermoplastics need to be reinforced with glass fibres in order to fulfill these requirements. Depending... [Pg.259]

Compatible witii several thermoplastic styrene reans... [Pg.260]

Cepeda-Jimenez CM, Pastor-Bias MM, Ferrandiz-Gomez TP, Martin-Martinez JM (2001) Influence of the styrene content of thermoplastic styrene-butadiene rubbers in the effectiveness of the treatment with sulfuric acid. Int J Adhes Adhesives 21 161... [Pg.1345]

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