ACRYLIC ACID TERPOLYMER

Composite proplnts, which are used almost entirely in rocket propulsion, normally contain a solid phase oxidizer combined with a polymeric fuel binder with a -CH2—CH2— structure. Practically speaking AP is the only oxidizer which has achieved high volume production, although ammonium nitrate (AN) has limited special uses such as in gas generators. Other oxidizers which have been studied more or less as curiosities include hydrazinium nitrate, nitronium perchlorate, lithium perchlorate, lithium nitrate, potassium perchlorate and others. Among binders, the most used are polyurethanes, polybutadiene/acrylonitrile/acrylic acid terpolymers and hydroxy-terminated polybutadienes... 

Acrylic acid terpolymers have appeared on the market in recent years. With their broad spectrum of functions, they offer the potential for excellent waterside conditions. In particular, the terpolymers have proved to be very effective particulate iron oxides dispersants and colloidal iron stabilizers. Examples include acrylic acid/sulfonic acid/sodium styrene sulfonate (AA/SA/SSS), such as Good-Rite K781, K797, K798. A further example is acrylic acid/ sulfonic acid/substituted acrylamide (AA/SA/NI), such as Acumer 3100. 

Another excellent but expensive acrylic acid terpolymer is Acumer 5000, a silica and magnesium silicate dispersant. Although this polymer remains effective well above 600 psig (42 bar), it is recommended that at or above this pressure, FW silica should be removed at source, using DI or some other appropriate external treatment process. 

Certain acrylic acid terpolymers have proved to be effective iron oxide dispersants and iron stabilizers (an example is acrylic acid/sulfonic acid/sodium styrene sulfonate, or AA/SA/SSS). 

Giimiisderelioglu M, Topal lU (2005) Vinyl ether/acrylic acid terpolymer hydrogels synthesized by [gammaj-radiation characterization, thermosensitivity and pH-sensitivity. Radiat Phys Chem 73 272-279... 

Nowadays commercial mixtures of bitumens with uncured synthetic elastomers are produced, e.g. ethylene-propylene-diene terpolymers (EPDM), styrene-butadiene sequence copolymers (SBS), and ethylene-acrylic ester-acrylic acid terpolymers (AECM). Mixtures with some thermoplastics are also commercial products, e.g. polyethylene (PE), ethylene-propylene copolymers (EPM), alpha-olefinic copolymers, atactic polypropylene (aPP), and ethylene-vinyl acetate copolymers (EVA). 

Escoi AT-31(y, Escoi AT-32, Escor AT-325. See Ethylene/methyl acrylate/acrylic acid terpolymer... 

Ethylene/methyl acrylate/acrylic acid terpolymer... 

NEUTRONYX 656. See Nonoxynol-11 Neutros , Neutros Extra. See Rosin Nevastain 21. See Phenol, styrenated Nevtac 10 Nevtac 80, Nevtac 100 Nevtac 115, Nevtac 130. See Terpene resin Newark 20. See Polyethylene, high-density Newark 32. See Ethylene/methyl acrylate/acrylic acid terpolymer... 

Poly (ethylene-chlorotrifluoroethylene). See Ethylene/chlorotrifluoroethylene copolymer Poly (ethylene-co-acrylic acid). See Ethylene/acrylic acid copolymer Poly (ethylene-co-1-butene). See Ethylene/butene-1 copolymer Poly (ethylene-co-butyl acrylate). See Ethylene/butyl acrylate copolymer Poly (ethylene-co-carbon monoxide). See Ethylene/carbon monoxide copolymer Poly (ethylene-co-ethyl acrylate). See Ethylene/ethyl acrylate copolymer Poly (ethylene-co-methacrylic acid). See Ethylene/methacrylic acid copolymer Poly (ethylene-co-methyl acrylate). See Ethylene/methyl acrylate copolymer Poly (ethylene-co-methyl acrylate-co-acrylic acid). See Ethylene/methyl acrylate/acrylic acid terpolymer... 

Suspension II was prepared by using a matrix of poly(butadiene acrylonitrile acrylic acid) terpolymer [PBAN] with 60% by volume of ammonium sulfate ground to an average particle size of 23 pm, exhibiting a standard deviation of 13 pm. The particles had low aspect ratios as observed with Scanning Electron Microscopy (SEM). The matrix in suspension II was also a Newtonian fluid with a viscosity of 37 Pa.s at 25 C. 

Polychloroprene is usually crosslinked with metallic oxides such as zinc oxide. Carboxylated elastomers, i.e., elastomers containing a termonomer, such as acrylic acid (e.g., acrylonitrile-butadiene-acrylic acid terpolymer), are also vulcanizable using metallic oxides. Crosslinking is also possible by radiation or enzymes, but this seems largely associated with the nature of the polymers to be crosslinked. We describe the mechanisms of crosslinking in greater detail in Section 4.11. 

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