Maleic anhydride polyethylene

Esterified polystyrene-co-maleic anhydride Polyethylene-co-propylene Poly(ethylene-co-propylene diene-modified) Poly(ethylene-co-propylene-co-olefin diene-modified) Hydrogenated polystyrene-co-butadiene Hydrogenated polystyrene-co-isoprene Hydrogenated polyisoprene. 

Antistreak polymers Polystyrene/maleic anhydride, polyethylene glycol, etc. 0-5... 

Acrylonitrile Chlor-alkali Maleic anhydride Polyethylene... 

Synonyms EMA Ethylene/maleic anhydride copolymer 2,5-Furandione, polper with ethene Maleic anhydride/polyethylene copolymer Definition Polymer of ethylene and maleic anhydride monomers Formula [CH CHJ.ICHCOOHCHCOOH],... 

Maleic anhydride/polyethylene copolymer. See Ethylene/MA copolymer... 

Maleic anhydride oligomer. See Maleic anhydride homopolymer Maleic anhydride/polyethylene copolymer. See Ethylene/MA copolymer Maleic anhydride polymer. See Maleic anhydride homopolymer Maleic anhydride, polymer with ethyl acrylate and vinyl acetate, hydrolyzed CAS 113221-69-5 UN 1760... 

Alt. styrene-co-maleic anhydride Polyethylene waxes W. Germany 2,348,840 1975 BASF A.G. 

Derivatives of polyisobutylene (6. in Figure 9.1) offer the advantage of control over the molecular weight of the polyisobutylene obtained by cationic polymerization of isobutylene. Condensation on maleic anhydride can be done directly either by thermal activation ( ene-synthesis reaction) (2.1), or by chlorinated polyisobutylene intermediates (2.2). The condensation of the PIBSA on polyethylene polyamines leads to succinimides. Note that one can obtain mono- or disuccinimides. The mono-succinimides are used as... 

The polyispbptylenes (PIB) having molecular weights ranging from 1000 to 2000 are substituted by maleic anhydride, and the polyisobutylene succinic anhydride (PIBSA) formed is neutralized by a polyethylene-polyamine as indicated in Figure 9.10. 

Extension of the chlorosulfonation technology to base resins other than polyethylene, where value can be added, seems a logical next step. Polypropylene and ethylene copolymers containing additional functionaUty, ie, maleic anhydride graft, vinyl acetate, acrylic acid, etc, have been chlorinated and chlorosulfonated to broaden the appHcation base, particularly in coatings and adhesives (9,10). 

Engineering resins can be combined with either other engineering resins or commodity resins. Some commercially successhil blends of engineering resins with other engineering resins include poly(butylene terephthalate)—poly(ethylene terephthalate), polycarbonate—poly(butylene terephthalate), polycarbonate—poly(ethylene terephthalate), polysulfone—poly (ethylene terephthalate), and poly(phenylene oxide)—nylon. Commercial blends of engineering resins with other resins include modified poly(butylene terephthalate), polycarbonate—ABS, polycarbonate—styrene maleic anhydride, poly(phenylene oxide)—polystyrene, and nylon—polyethylene. 

In order to improve the physical properties of HDPE and LDPE, copolymers of ethylene and small amounts of other monomers such as higher olefins, ethyl acrylate, maleic anhydride, vinyl acetate, or acryUc acid are added to the polyethylene. Eor example, linear low density polyethylene (LLDPE), although linear, has a significant number of branches introduced by using comonomers such as 1-butene or 1-octene. The linearity provides strength, whereas branching provides toughness. 

In the case of EVOH being used as an interlayer with polyethylene or polystyrene, it is necessary to use additional adhesive layers such as an ethylene-vinyl acetate-maleic anhydride terpolymer (e.g. Orevac— Atochem). 

In all the compositions, the DCP-cured blends showed better properties than the corresponding unvulcanized samples. Choudhary et al. [30] further demonstrated the use of EPDM, chlorinated PE, chlorosulfo-nated PE, maleic anhydride modified polyethylene, and blends of epoxidized natural rubber-sulfonated EPDM as compatibilizers in NR-LDPE (low-density PE) blends. 

Figure 12 Scanning electron micrographs of 70 30 HDPE-NBR blend with (a) 0 wt%, (b) 1 wt%, (c) 5 wt%, and (d) 10 wt% maleic anhydride modified polyethylene. Source Ref. 75.

The effect of incorporating p-hydroxybenzoic acid (I) into the structures of various unsaturated polyesters synthesised from polyethylene terephthalate (PET) waste depolymerised by glycolysis at three different diethylene glycol (DEG) ratios with Mn acetate as transesterification catalyst, was studied. Copolyesters of PET modified using various I mole ratios showed excellent mechanical and chemical properties because of their liquid crystalline behaviour. The oligoesters obtained from the twelve modified unsaturated polyesters (MUP) were reacted with I and maleic anhydride, with variation of the I ratio with a view to determining the effect on mechanical... 

Gilsonite is active as a fluid loss additive because the permeability of cement is reduced. Latex additives also act as fluid loss additives. They also act as bonding aids, gas migration preventers, and matrix intensifiers. They improve the elasticity of the cement and the resistance to corrosive fluids [921]. A styrene-butadiene latex in combination with nonionic and anionic surfactants shows less fluid loss. The styrene-butadiene latex is added in an amount up to 30% by weight of the dry cement. The ratio of styrene to butadiene in the latex is typically 2 1. In addition, a nonionic surfactant (octylphenol ethoxylate and polyethylene oxide) or an anionic surfactant, a copolymer of maleic anhydride, and 2-hydroxypropyl acrylate [719] can be added in amounts up to 2%. 

Notes EVA, ethylene vinyl acetate LLDPE-MAH, maleic anhydride grafted linear low-density polyethylene COPA, co-polyamide. 

The EVA and co-polyamide (COPA) layers are resolved quite well by FTIR transmission imaging (Figure 12), but the 5 pm linear low-density polyethylene/ maleic anhydride grafted (LLDPE-MAH) layers cannot be detected in this mode. 

By using a combination of RAFT and ring opening polymerization (ROP), (polyethylene oxide) methyl ether)(polystyrene)(poly(L-lactide) 3-miktoarm star terpolymers have been successfully synthesized [182]. The synthetic approach involved the reaction of the cw-functionalized - OH group of the poly(ethylene oxide) methyl ether with maleic anhydride under conditions where only one hydroxyl group can be esterified (MPEO). The double bond... 

The interaction of the polymer with the filler is promoted by the presence of reactive functionality in the polymer, capable of chemical reaction or hydrogen bonding with the functionality, generally hydroxyl, on the surface of the filler. Thus, carboxyl-containing polymers, e.g. ethylene-acrylic acid copolymers and maleic anhydride- and acrylic acid-grafted polyethylene and polypropylene interact readily with fillers. 

There are various speciality polyethylene copolymers developed from ethylene and acrylic acid, methylacrylate, butylacrylate, ethylacrylate, maleic anhydride, glycidyl methacrylate, acrylic esters, acrylic ester-maleic anhydride. .. 

Nair and Chien [44] compared patches and tablets of different polymers (sodium carboxymethylcellulose, carbopol, polyethylene oxide, polymethyl vinyl ether-maleic anhydride, tragacanth) regarding their release characteristics of four drugs (chlorheximide, clotrimazole, benzocaine, and hydrocortisone). They observed sus-... 

In this case, there are too few macroradicals available for reaction because of insufficient polymer degradation. In the disk-type extruder, a higher-stress gradient is achievable, more macroradicals are generated, and intensive cross-linking between polyethylene or highly chlorinated polyethylene and maleic anhydride or methyl methacrylate can be obtained (Heinicke 1984, Zhao et al. 2002, 2003). 

The products of polyethylene modification are mixed Mock and graft copolymers of three dimensional structures (with acrylic acid, methacrylamide and acrylonitrile) or linear structures (acenaphthylene and maleic anhydride). This is again consistent with the nature of the monomers and the activity of their radicals. 

Polyethylene Methacrylamide Maleic anhydride Acenaphthylene Acrylic add Acrylonitrile... 

EP-4 developed by ERDL is a very flexible polyester based on polyethylene glycol with molecular weight-200 (PEG-200), isophthalic acid (IPA) and maleic anhydride (MAn). Before its use, it is blended with styrene monomer (1 1) and cured at room temperature using cobalt naphthenate (as an accelerator) and methyl ethyl ketone (MEK) peroxide (as a catalyst). This meets the requirements of the main inhibitor and is used for inhibition of DB and CMDB propellants after the application of a barrier coat (generally a rigid polyester such as PR-3). However, it is observed during manufacture of EP-4 that there is a lot of batch-to-batch variation in properties in spite of the strict quality control measures adopted during its manufacture. 

Alternatively, the enzyme can be modified such that it dissolves in a hydrophobic ionic liquid with retention of activity. This approach was demonstrated with cyt c, which, when covalently modified with polyethylene glycol (PEG), dissolved in [EMIm][ Tf2N] with retention of activity. The best results were obtained when the molecular weight of the polymer chain was >2000 [88]. Similarly, a copolymer of PEG and maleic anhydride solubilized subtilisin in [EMIm][NTf2] and a range of similar ionic liquids with good retention of activity and operational stability [89, 90]. 

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