Flexible thermoplastic polyolefin

Currently, important TPE s include blends of semicrystalline thermoplastic polyolefins such as propylene copolymers, with ethylene-propylene terepolymer elastomer. Block copolymers of styrene with other monomers such as butadiene, isoprene, and ethylene or ethylene/propy-lene are the most widely used TPE s. Styrene-butadiene-styrene (SBS) accounted for 70% of global styrene block copolymers (SBC). Currently, global capacity of SBC is approximately 1.1 million tons. Polyurethane thermoplastic elastomers are relatively more expensive then other TPE s. However, they are noted for their flexibility, strength, toughness, and abrasion and chemical resistance. Blends of polyvinyl chloride with elastomers such as butyl are widely used in Japan. ... 

Borates Zinc borate, barium metaborates, ammonium fluoroborate, boric acid Flexible PVC, polyolefins, unsaturated polyesters, thermoplastic polyesters, epoxies, nylons, urethanes, and phenolics Alcan, Amspec Chemical, Asahi Denka Kogyo, Borax, Buckman Laboratories, Great Lakes... 

Plastic types are variable, ranging from flexible to rigid and from thermoplastic to thermoset. Because of these variations, the type of coating applied to them also varies, depending on cure response, solvent sensitivity, and modulus. The type of coating also depends upon the end use of the coated plastic. For example, topcoats can be applied directly to the plastic without the use of a conductive primer if two-toning or blackout areas are not part of the styling latitude. Adhesion promoters also are often utilized if a particularly difficult-to-adhere-to plastic is encountered (i.e., polypropylenes or thermoplastic polyolefins (TPOs), a blend of elastomer and olefin). 

Thermoplastic polyolefin blends can be produced as quite soft materials (as low as 55 Shore A) or as harder (above 95 Shore A), flexible products. They are particularly useful when a combination of good weatherabi1ity and rubbery behavior is required. Applications include automotive parts, weather stripping, hose, and sporting goods. Because of their good dielectric and insulating properties, polyolefin blends may be particularly useful in wire and cable insulation. 

Usage of phosphoms-based flame retardants for 1994 in the United States has been projected to be 150 million (168). The largest volume use maybe in plasticized vinyl. Other use areas for phosphoms flame retardants are flexible urethane foams, polyester resins and other thermoset resins, adhesives, textiles, polycarbonate—ABS blends, and some other thermoplastics. Development efforts are well advanced to find appHcations for phosphoms flame retardants, especially ammonium polyphosphate combinations, in polyolefins, and red phosphoms in nylons. Interest is strong in finding phosphoms-based alternatives to those halogen-containing systems which have encountered environmental opposition, especially in Europe. 

A route to compatibility involving ionomers has been described recently by Eisenberg and coworkers [250-252]. The use of ionic interactions between different polymer chains to produce new materials has gained tremendous importance. Choudhury et al. [60] reported compatibilization of NR-polyolefin blends with the use of ionomers (S-EPDM). Blending with thermoplastics and elastomers could enhance the properties of MPR. The compatibility of copolyester TPE, TPU, flexible PVC, with MPR in aU proportions, enables one to blend any combination of these plastics with MPR to cost performance balance. Myrick has reported on the effect of blending MPR with various combinations and proportions of these plastics and provided a general guideline for property enhancement [253]. 

Obviously, there exists severe interplastics competition, e.g. PP vs. ABS, clarified PP vs. PS, PA, PVC, HDPE and PS (Table 10.7). A wide range of cross-linked and thermoplastic elastomer applications, from footware to automotive parts and toothbrushes, are adopting new metallocene-catalysed polyolefin elastomers (POEs). These low-density copolymers of ethylene and octene were first accepted as impact modifiers for TPOs, but now displace EPDM, (foamed) EVA, flexible PVC, and olefinic thermoplastic vulcanisates (TPVs). Interpolymer competition may also result from... 

Orlando, FI., 7th-llth May, 2000, paper 49 EXTRUSION OF CLOSED CELL VERY LOW DENSITY FLEXIBLE SYNTACTIC FOAMS USING METALLOCENE CATALYZED POLYOLEFINS AND THERMOPLASTIC MICROBALLOONS Trainer L J Beauregard D Orroth S Schott N Massachusetts,University (SPE)... 

Ecoflex F was designed to be a strong and flexible material with mechanical properties similar to PE. The films are tear-resistant and flexible, as well as resistant to fluctuations in water and humidity. Ecoflex F is a thermoplastic and can be melt-processed on standard polyolefin equipment (see Sect. 5). It is mainly used in film applications. The very high toughness and failure energy represent product characteristics of Ecoflex F that significantly exceed the respective properties of PE films. 

G. Polyolefins. The thermoplastic hydrocarbons polyethylene and polypropylene are flexible, inexpensive materials with good chemical resistance. Two types of polyethylene are available low density and high density. The former contains branched polymer chains which impart flexibility. The maximum usa-... 

The more viscous, mastic-type cements include some of the epoxies, urethanes and sflicones. Epoxies adhere well to both thermosets and thermoplastics. But epoxies are not recommended for most polyolefin bonding. Urethane adhesives have made inroads into flexible packaging, the shoe industry, and vinyl bonding. Polyester-based polyurethanes are often preferred over polyether systems because of their higher cohesive and adhesive properties. Sflicones are especially recommended where both bonding and sealing are desired. 

Chem. Descrip. Decabromobiphenyl oxide CAS 1163-19-5 EINECS/ELINCS 214-604-9 Uses Flame relardant for thermoplastic, elastomeric, and Ihemioset polymer systems incl. HIPS, PBT, ABS, njrfons, PP, PC, PET, polybulylene, PVC, LDPE, EPDM, unsat. polyesters, epoxies, flexible PL) foam, wire insulation (polyolefin, TPE, PU elastomer, polyamide/polyimide), adhesives, coatings, textiles... 

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