Ethylene acrylic acid dispersion

Emulsion paints are based on aqueous synthetic resin dispersions, which afford a lacquer-like paint film. The resin dispersions which are commonly used by the paint industry contain water as the carrier phase. A large number of such dispersions are available, based on different resins such as poly(vinyl acetate), which may be employed as a copolymer with vinyl chloride, maleic dibutyl ester, ethylene, acrylic acid esters, polyacrylic resin, and copolymers of the latter with various monomers, as well as styrene-butadiene or poly(vinyl propionate). These disper-... 

Blends of ethylene-methacrylic acid or ethylene-acrylic acid copolymers with PE (Formion ) show either dispersed or co-continuous morphologies. They have outstanding fuel and oil resistance, adhesion to glass and metals, and ease of foaming. The blends are injection molded into bumper end caps, bumper mb strips, fender stone guard, extmded into products such as carpet heel pad and window trim. Moldings can also be foamed for bumper guards. 

Setua and White (1991 a,b) used CM (chlorinated polyethylene) as a compatibilizer to improve the homogeneity of binary and ternary blends of CR, NBR, and EPR. NBR-EPM and CR-EPDM blends homogenize more rapidly when small amounts of CM are added. The presence of the compatibilizer leads to reductions in both the time needed for mixing, observed by flow visualization, and the domain size of the dispersed phase, observed by SEM. Arjunan et al. (1997) have used an ethylene acrylic acid copolymer and an EPR-g-acrylate as a compatibilizer for blends of EPDM-CR. The addition of the compatibilizer leads to the reduction in the phase size of the dispersed EPDM phase as well as increase in the tensile tear strength of the blend. 

Prifac 9428, Prifac 9429. See Stearic acid Prifrac 2901. See Caprylic acid Prifrac 2906. See Capric acid Prifrac 2910. See Caprylic/capric acid Prifrac 2920 Prifrac 2922. See Laurie acid Prifrac 2940, Prifrac 2942. See Myristic acid Prifrac 2960. See Palmitic acid Prifrac 2980, Prifrac 2981. See Stearic acid Prifrac 2987 Prifrac 2989. See Behenic acid Prifrac 2990. See Erucic acid Prifrac 5901. See Coconut acid Primacei . See Cellulose Primacor 4990 Dispersion. See Ethylene/acrylic acid copolymer Primapei C-93. See Acrylic resin Primaroi 1006. See Hexyl decanol Primaroi 1208. See Octyidodecanol Primary active amyl alcohol. See 2-Methyl-1-butanol... 

PE bottles exhibit a very poor gasoline permeation resistance, where about 25% of the filled gasoline penetrates out of a PE bottle in 14 days at 40 °C. Xylene, white spirit, cleaning naphtha, and many other pure and/or mixed hydrocarbon solvents easily penetrate PE containers such permeation results in pollution, safety, and health problems. The laminar blends of PE and PA, polyvinyl alcohol, and/or EVOH (with 32% ethylene), in the presence of modified PA or zinc-neutralised ethylene-acrylic acid copolymer as compatibilisers, exhibit significantly higher barrier properties as compared with PE or the conventional homogeneous hlends associated with uniform dispersed PA within a PE matrix [11]. 

Blends of ethylene copolymers (such as ethylene-vinyl acetate, ethylene-ethyl acrylate, ethylene-acrylic acid copolymers) have been typically added to LDPE, HDPE and LLDPE to improve filler and additive acceptance, balance film properties, improve environmental stress crack resistance, tear resistance, toughness and surface properties. These blends are particularly prevalent in film formulations and as such are rarely disclosed by the manufacturer. Equistar has introduced functionalized polyolefins (Integrate ) to improve dispersion and adhesion in wood fiber filled and mineral filled polyolefin composites. Arkema Group offers Lotryl ethylene-acrylate (methyl, butyl and 2-ethyl hexyl) copolymers and notes the wide range of compatibility with other polyolefins as well as polyamides and polyesters. 

Polymeric steric stabilizer such as poly(vinylpyrrolidone) (PVPo),poly(acrylic acid), poly(hydroxypropyl)cellulose, etc., are used to prepare monodisperse polymer in dispersion polymerization of monomers such as alkyl acrylates and methacrylates, and styrene in polar media. AB and ABA block copolymers are a second type of steric stabilizer which can be used in dispersion polymerization. For example, the poly(styrene-h-ethylene oxide) was recently used by Winnik et al. [6] in the dispersion polymerization of styrene in methanol. 

The most commonly used compatibilLzers for the blends are graft copolymers of polypropylene with maleic anhydride (PP-g-MAH) (197-203), glycidyl methacrylate (PP-g-GMA) (204,205), and acrylic acid (PP-g-AA) (198,206). They can increase the tensile strength and impact strength of the blends. Favis et al. (207-210) used an ionomer, a copolymer of ethylene and a mixture of methacrylic acid, zinc methacrylate, and isobutylacrylate to compatibUize PP/PA blends and found it effective to decrease the dispersed particles and improve mechanical properties. 

P. Petrov, P. Mokreva, C. B. Tsvetanov, and L. Terlemezyan, Colloidal aqueous dispersion of polyanihne nanotuhes grafted non-covalently with poly(ethylene oxide)-blockpoly(acrylic acid) copol3mier. Colloid Polym. Sci., 286, 691-697 (2008). 

New types of metal-containing polymers can be effectively produced 1 construction of polymer supports in the form of gels which, in use, are capable of swelling, insoluble in the reaction medium, but permeable to the molecules, substrate and solvent (23-25). they are based on ethylene-prcpylene rubbers and also ternary copolymers of ethylene, propylene and nonconjugated diene, siloxane rubbers with the radically grafted vinylpyridine, acrylic acid (AAc), methylmethacrylate (MMA), etc. Fu2 her cross-linking of the rubber base allows the syntheses of three-dimensional networks to avoid the dispersion of these particles in the reaction media. MX is bound within these networks. Such polymers were termed mosaic their structure is shown in Fig. 2. It is evident... 

Otey et al. [61, 68-71] also described blends of starch with synthetic polymers, in which gelatinized starch was used instead of starch granules. The initial films, composed of 90 per cent of starch blended with poly(ethylene-co-acrylic acid) (EAA), were obtained by casting from aqueous dispersions or by dry milling in a rubber mill, followed by a hot roll treatment, but only the cast films attained acceptable characteristics [71]. These materials were intended for application as mulch films for agriculture. 

In intercalation of polymer from solution mode of nanocomposite synthesis, the organically modified silicate is dispersed in a solvent in which the polymer is also soluble. The polymer then adsorbs onto the delaminated sheets followed by the evaporation of the solvent. When the solvent is evaporated, the sheets reassemble, which also trap the polymer chains in between. Thus, an ordered multilayer structure is usually formed using this approach. The polymer chains loose entropy in the process of intercalation, which is compensated by the increase in the entropy of the solvent molecules due to their desorption from the filler interlayers. The technique is mostly used for the intercalation of the water-soluble polymers Uke poly(vinyl alcohol), poly(ethylene oxide), poly(acrylic acid), poly(vinlypyrroUdone), etc. [20-24], Later on, the use of this technique was also undertaken in organic solvents for polymers nonsoluble in water [25, 26],... 

Tanaka H, Kubota J, Miyahara S, Kuroboshi M (2005) Electrooxidation of alcohols in an Ai-oxyl-immobilized poly(ethylene-co-acrylic acid)/ water disperse system. Bull Chem Soc Jpn 78 1677-1684... 

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