Methacrylate acrylonitrile butadiene styrene copolymer

Polyamide 6 can be toughened more effectively by blending it with maleated MABS (methacrylate-acrylonitrile-butadiene-styrene copolymer) than with ordinary MABS. 

The stabilization of poly(vinyl chloride) against light has been reviewed by Wirth and Andreas. Detailed mechanistic studies have indicated the importance of peroxides in the process of photo-oxidation. It was suggested that protection could be successfully achieved by exclusion of radiation of A < 380 nm. E.s.r. examination of irradiated samples demonstrated the intervention of peroxides in the mechanisms with the ultimate formation of carbonyl groups which caused chain scission by Norrish cleavage. Photo-oxidation of samples of poly(vinyl chloride) modified by incorporation of acrylonitrile-butadiene-styrene, methyl methacrylate-butadiene-styrene, and methyl methacrylate-acrylonitrile-butadiene-styrene copolymers has been investigated. Discolouration was accelerated by the presence of the modifiers. Thermal pre-treatment accelerated photo-induced decomposition. Mechanical properties were also examined, and scanning electron microscopy showed surface defects due to decomposition of the modifier. ... 

ABA ABS ABS-PC ABS-PVC ACM ACS AES AMMA AN APET APP ASA BR BS CA CAB CAP CN CP CPE CPET CPP CPVC CR CTA DAM DAP DMT ECTFE EEA EMA EMAA EMAC EMPP EnBA EP EPM ESI EVA(C) EVOH FEP HDI HDPE HIPS HMDI IPI LDPE LLDPE MBS Acrylonitrile-butadiene-acrylate Acrylonitrile-butadiene-styrene copolymer Acrylonitrile-butadiene-styrene-polycarbonate alloy Acrylonitrile-butadiene-styrene-poly(vinyl chloride) alloy Acrylic acid ester rubber Acrylonitrile-chlorinated pe-styrene Acrylonitrile-ethylene-propylene-styrene Acrylonitrile-methyl methacrylate Acrylonitrile Amorphous polyethylene terephthalate Atactic polypropylene Acrylic-styrene-acrylonitrile Butadiene rubber Butadiene styrene rubber Cellulose acetate Cellulose acetate-butyrate Cellulose acetate-propionate Cellulose nitrate Cellulose propionate Chlorinated polyethylene Crystalline polyethylene terephthalate Cast polypropylene Chlorinated polyvinyl chloride Chloroprene rubber Cellulose triacetate Diallyl maleate Diallyl phthalate Terephthalic acid, dimethyl ester Ethylene-chlorotrifluoroethylene copolymer Ethylene-ethyl acrylate Ethylene-methyl acrylate Ethylene methacrylic acid Ethylene-methyl acrylate copolymer Elastomer modified polypropylene Ethylene normal butyl acrylate Epoxy resin, also ethylene-propylene Ethylene-propylene rubber Ethylene-styrene copolymers Polyethylene-vinyl acetate Polyethylene-vinyl alcohol copolymers Fluorinated ethylene-propylene copolymers Hexamethylene diisocyanate High-density polyethylene High-impact polystyrene Diisocyanato dicyclohexylmethane Isophorone diisocyanate Low-density polyethylene Linear low-density polyethylene Methacrylate-butadiene-styrene... 

MABS polymers (methyl methacrylate-acrylonitrile-butadiene-styrene) together with blends composed of polyphenylene ether and impact-resistant polystyrene (PPE/PS-I) also form part of the styrenic copolymer product range. Figure 2.1 provides an overview of the different classes of products and trade names. A characteristic property is their amorphous nature, i.e. high dimensional stability and largely constant mechanical properties to just below the glass transition temperature, Tg. 

Acrylonitrile-butadiene-styrene copolymer (ABS) Ethylene-methacrylic acid copolymers Styrene-butadiene copolymer (SBR)... 

Thermoplastics are plastics which undergo a softening when heated to a particular temperature. This thermoplastic behaviour is a consequence of the absence of covalent bonds between the polymeric chains, which remain as practically independent units linked only by weak electrostatic forces (Figure 1.4(a)). Therefore, waste thermoplastics can be easily reprocessed by heating and forming into a new shape. From a commercial point of view, the most important thermoplastics are high density polyethylene (HDPE), low density polyethylene (LDPE), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), polyethylene tereph-thalate (PET), polyamide (PA), polymethyl methacrylate (PMMA), acrylonitrile-butadiene-styrene copolymer (ABS), and styrene-acrylonitrile copolymer (SAN). 

Some polymers are essentially amorphous (e.g., polystyrene, acrylonitrile butadiene styrene copolymer, polycarbonate, and polymethyl methacrylate) while others are semicrystalline (e.g., polyolefins and polyamides). The former tend to have a wide melting temperature range with a comparatively high melt strength, while semicrystalline polymers tend to have a narrow melting temperature range and frequently a low melt strength. 

Incorporation of 0.1—4% zeolites 13X, 5A, 4A, lOX, XW and ala) natural zeolites and synthetic pdyn rs (polystyrene, vinyl chloride-vinyl acetate copolymer, poly propylene, acrylonitrile, butadiene styrene copolymer, poly (methyl methacrylate or polyetl lene) containing 0.1-4% antistatic agent improves antistatic properties. However tire zeolites alone fail to do so In another instance a composition of polyvinylchloride 100, dioctylthalate 80, stabilizer 2, Pd-stearate-1, and zeolite 100 parts is rolled at 160 ° and pressed to give a white sheet having surface resistivity 3.8 x 10 ohm-cm coitq>ared with 1.5 X 10 ohm-cm for a similar sheet containing calcium carbonate in place of zedite, vdiich reflects the definite role of these zeolites in improving the antistatic properties of the composition. 

Acrylonitrile/butadiene/styrene copolymer Ethyl acrylate binder, nonwoven fabrics AcrylatesA/A copolymer 2-Hydroxyethyl methacrylate Natural rubber latex Polyvinyl acetate... 

Figure 1 Polymer interpretation chart. PAI, polyamideimide PC, polycarbonate UP, unsaturated polyester PDAP, diarylate phtalate resin VC-VAc, vinyl chloride-vinyl acetate copolymer PVAc, polyvinyl acetate PVFM, polyvinyl formal PUR, polyurethane PA, polyamide PMA, methacrylate ester polymer EVA, ethylene-vinyl acetate copolymer PF, phenol resin EP, epoxide resin PS, polystyrene ABS, acrylonitrile-butadiene-styrene copolymer PPO, polyphenylene oxide P-SULFONE, poly-sulfone PA, polyamide UF, urea resin CN, nitrocellulose PVA, polyvinyl acetate MC, methyl cellulose MF, melamine resin PAN, polyacrylonitrile PVC, polyvinyl chloride PVF, polyvinyl fluoride CR, polychloroprene CHR, polyepichlorohydrin SI, polymethylsiloxane POM, polyoxy-methylene PTFE, polytetrafluoroethylene MOD-PP, modified PP EPT, ethylene-propylene terpolymer EPR, ethylene-propylene rubber PI, polyisoprene BR, butyl rubber PMP, poly(4-methyl pentene-1) PE, poly(ethylene) PB, poly(butene-l). (Adapted from Ref. 22, p. 50.)...

They observed that protonated emeraldine using these dopants has a good solubility in cresol, which is a excellent solvent for many classical polymers such as poly(methyl methacrylate). This methodology of using a dopant having a surfactant group led to the preparation of polyblends with following polymers. Nylon, polycarbonate, polystyrene, polysultone, poly(-vinylacetate) polypropylene, poly(vinylchloride), acrylonitrile butadiene-styrene copolymer (ABS) and poly methyl (methacrylate). 

For the purposes of this chapter, acrylic polymers are defined as polymers based on acrylic acid and its homologues and their derivatives. The principal commercial polymers in this class are based on acrylic acid itself (I) and methacrylic acid (II) esters of acrylic acid (III) and of methacrylic acid (IV) acrylonitrile (V) acrylamide (VI) and copolymers of these compounds. Copolymers of methacrylic acid and ethylene are described in Chapter 2. The important styrene-acrylonitrile and acrylonitrile-butadiene-styrene copolymers are discussed in Chapter 3 whilst acrylonitrile-butadiene copolymers are dealt with in Chapter 18. 

For polymers obtained by two or more kinds of alkene monomers by the addition reaction, a dash is always added between two monomers and the prefix poly is affixed to the word monomer name 1 + monomer name 2 + copolymer. For example, the copolymer of methyl methacrylate and styrene is named polyCmethyl methacrylate-styrene) or methyl methacrylate-styrene copolymer the polymer that is obtained by copolymerization of acrylonitrile, butadiene, and styrene is named polyCacrylonitrile-butadiene-styrene) or acrylonitrile-butadiene-styrene copolymer. ... 

Here/o (=/i of equation 49 of Chapter 11) is the fractional free volume at zero strain. For reasonable values of parameters near Tg, it can be estimated that a tensile strain of 1% would shift the time scale by about one logarithmic decade. In a simpler formulation, the ratio j6ty/j8 may be taken as unity. Experiments of this sort have been report for poly(methyl methacrylate), copolymers consisting largely of polyacrylonitrile, polycarbonate, and an acrylonitrile-butadiene-styrene copolymer blend the effects of strain dilatation on tensile stress relaxation, torsional stress relaxation, and combined tensile and torsional stress relaxation have been compared. - ... 

Methacrylate acrylonitrile butadiene styrene (MABS) copolymer is similar to ABS except for the addition of an additional monomer, usually methyl methacrylate. It is an amorphous, clear, transparent material with the thermal and mechanical properties like those of ABS. The transparency is achieved by matching the refractive indices of the matrix resin... 

Fig. 5.61 Dependence of failure stress of a variety of engineering polymers upon the number of cycles accumulated during a dynamic fatigue test at 2(fC. The polymers used were poly (methyl methacrylate) (PMMA), rigid poly (vinyl chloride) (PVC) and an acrylonitrile-butadiene-styrene copolymer (ABS). (After Bucknall, Gotham and Vincent Chapter 10 in Polymer Sciencey ed. Jenkinsy North-Holland, 1972.)...

At one time butadiene-acrylonitrile copolymers (nitrile rubbers) were the most important impact modifiers. Today they have been largely replaced by acrylonitrile-butadiene-styrene (ABS) graft terpolymers, methacrylate-buta-diene-styrene (MBS) terpolymers, chlorinated polyethylene, EVA-PVC graft polymers and some poly acrylates. 

Besides the MBS materials, related terpolymers have been prepared. These include materials prepared by terpolymerising methyl methacrylate, acrylonitrile and styrene in the presence of polybutadiene (Toyolac, Hamano 500) methyl methacrylate, acrylonitrile and styrene in the presence of a butadiene-methyl methacrylate copolymer (XT Resin), and methylacrylate, styrene and acrylonitrile on to a butadiene-styrene copolymer. 

The homopolymers, which are formed from alkyl cyanoacrylate monomers, are inherently brittle. For applications which require a toughened adhesive, rubbers or elastomers can be added to improve toughness, without a substantial loss of adhesion. The rubbers and elastomers which have been used for toughening, include ethylene/acrylate copolymers, acrylonitrile/butadiene/styrene (ABS) copolymers, and methacrylate/butadiene/styrene (MBS) copolymers. In general, the toughening agents are incorporated into the adhesive at 5-20 wt.% of the monomer. 

There are various requirements for impact-modified PVC. The most demanding is for outdoor sidings and window frames, where lifetimes of 20 years are expected. Because butadiene polymers or copolymers (e.g., acrylonitrile/butadiene/styrene (ABS), methyl methacrylate/butadiene/styrene (MBS)) are susceptible to UV degradation these polymers are usually not employed instead acrylate polymers are used for these applications. 

Uses Copolymerized with methyl acrylate, methyl methacrylate, vinyl acetate, vinyl chloride, or 1,1-dichloroethylene to produce acrylic and modacrylic fibers and high-strength fibers ABS (acrylonitrile-butadiene-styrene) and acrylonitrile-styrene copolymers nitrile rubber cyano-ethylation of cotton synthetic soil block (acrylonitrile polymerized in wood pulp) manufacture of adhesives organic synthesis grain fumigant pesticide monomer for a semi-conductive polymer that can be used similar to inorganic oxide catalysts in dehydrogenation of tert-butyl alcohol to isobutylene and water pharmaceuticals antioxidants dyes and surfactants. 

Methyl methacrylate-butadiene-styrene (MMBS) types are rarely used as such, but rather in blends as impact modifiers (1). Styr-enic copolymers such as acrylonitrile-butadiene-styrene (ABS) and MMBS make up the largest category of impact modifiers, with about 45% of the impact modifier market (2). The field of polymer blends and the reasons for the addition of impact modifiers have been reviewed (3). 

Comparison of Methyl Methacrylate-Butadiene-Styrene with Acrylonitrile-Butadiene—Styrene Graft Copolymers... 

Copolymers of styrene include a large group of random, graft, and block copolymers. Those with a high proportion of acrylonitrile used in barrier films as well as others such as methacrylic-butadiene-styrene copolymer (MBS) plastic is used as modifiers in PVC, SAN, ABS, ASA, etc. The styrene-acrylonitrile copolymer (SAN) is the most important when considering volume and number of applications. 

Methods have been developed for the analysis of hydrocarbon polymers (e.g. styrene, butadiene and isoprene) by MALDI-TOF-MS, through the attachment of Ag(acac) to matrices of tran5-3-indoleacrylic acid or l,4-bis(2-(5-phenyloxazolyl))benzene . SUver-cationized molecular ions were produced for polymers of styrene, butadiene and isoprene up to mass 125,000 Da. For lower-mass styrene polymers, the resolved oligomer molecular ions provide information concerning the end group. This technique permits the analysis of many commercially important materials such as acrylonitrile-butadiene-styrene (ABS), styrene-acrylonitrile, styrene-methyl methacrylate and styrene-isoprene copolymers. The use of the salts of transition metals other than Ag, Cu or Pd as the cationizing agents fails to cationize polystyrenes in MALDI. The ability of MALDI to reduce metals to the oxidation state 4-1 is critically important to polystyrene cationization, as without this reduction MALDI tends to fail to form polystyrene-metal cations. Cu(acac)2 was used for the verification of the above . 

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