Zn naphthenate

T ransparent heat resistant coatings were formed by heating of a mixture of BPA/DC, l,l,l-tris(4-cyanatophenyl)ethane, nonylphenol and Zn naphthenate [21]. The cross-linked polymer from BPA/DC, maleic anhydride, p-toluenesulfonic acid, Zn acetate and DABCO has high Tg [22]. BPA/DC monomer can be replaced by the corresponding prepolymer with p-toluenesulfonic acid monohydrate and Zn acetate. The composition obtained is processed as a molding compound [23],... 

Fig. 9. Dependency of Tg and conversion on cure temperature for BACY, catalyzed by Zn naphthenate (0.15 phr)/nonyl phenol (2 phr) system...

Zinc soaps, which are complexes of long chain fatty acids, find similar applications in the curing and hardening of coatings to other transition metal soaps. A summary is available.123 The more important anions are 2-ethylhexanoate, naphthenate and stearate. Mixtures of zinc and calcium soaps are also effective stabilizers for poly(vinyl chloride).124 The complexes [Zn 0P(0)-(OBun)2 2] and [Zn SP(S)(OBun)2 2] both promote antiwear properties of lubricating oils.125... 

To obtain a heat and water resistant crosslinked polymer, Cu naphthenate and an alcohol (e.g. benzyl alcohol) were added to BPA/DC as a catalyst epoxide resins (cf. Sect. 6) can be used as well [19]. The use of Zn acetate together with dicumyl peroxide was also mentioned [20],... 

In the naphthenic acid (mixture of cyclopentylalkylcarboxylic acids)-petroleum ether systems, Singh et al. (132) found the extracted species of Zn(II), Cd(II), and Hg(II) to be ZnA2HA-H20, CdA2(HA)2, and Hg2A4(HA)4, respectively, and the extraction constant to decrease in the order Hg > Cd > Zn. They also extracted HgA2(HA)2 with hexanoic acid in chloroform (133). 

At lower temperature the equilibrium is shifted in favor of the allophanate but the rate of equilibrium decreases and at room temperature no reaction occurs in 2 weeks. Metal carboxylates (naphthenates, 2-ethylhexanoates, linoresinates of Pb, Co, Cu, Mn, Fe, Cd, V, Zn) were found to accelerate this reaction very appreciably. Particularly active are the lead and cobalt salts which caused complete conversion at room temperature in a few hours. All the metal salts with the exception of the zinc salts also catalyze the... 

Other trimerization catalysts that have been reported are amines [ 15,15a], salts of weak acids [16], potassium acetate, sodium carbonate [17], soluble compounds of K, Mg, Zn, Hg, Cu, Ni, Cr, Sn, Al, V, Ti [18], and epoxides in the presence of tertiary amines [19] such as triethylene diamine-propylene oxide [20]. Sandler [21] employed a variety of catalysts including calcium naphthenate, amines, and organometallics. 

CAS 12001-85-3 EINECS/ELINCS 234-409-2 Synonyms Naphthenic acid zinc salt Empirical C HioOiZn Formula Zn(C6H5COO)2... 

Zn pzt/iotOJULm ndu t/u.2, hydrodesulfurization, hydrocracking of heavy or residual oil-stocks, hydrofinishing or hydrotreating of lubricating oils, demetallization, denitrification of gas-oils, isomerization of cyclopropane and hydrogenation of benzene and of naphthenic lube oil distillate (30, 31, 26, 6, 32). 

Preferred catalysts can be obtained from Shepherd Chemical Co. and Amspec Specialty Chemicals and used with metal concentrations in the range 200-300 ppm of Cu " ", Co" " ", Co" "" ", Zn" " " and Mn" " ", or alternatively, acetyl acetonates can be used in conjunction with 1.5-6 phr nonylphenol. The acetyl acetonates are more latent than the corresponding naphthenates or octoates, and have a typical outlife of up to four weeks at room temperature. Conversion can be achieved at 177°C with a post cure of 1 h at 210°C, followed by 2 h at 250°C. 

Ba/Ca Soap + Cd/Zn Soap + Epoxidized Fatty Ester + Organic Phosphite. This synergistic combination has always heen unnecessarily secretive, sold under vague names such as mixed metal, synergistic, and so on. It is universally used for plasticized PVC, because it is soluble, economical, and effective. The metal soap may he phenate, octoate, neodecanoate, naphthenate, benzoate, laurate, myristate, palmitate, or stearate. 

Iron driers n. Iron salts of naphthenic acid, 2-ethyl hexoic acids or other acids, which actively accelerate polymerization at elevated temperatures, but are only feebly active at room temperature. The presence of the very dark ferric ion makes them applicable in dark or tinted finishes. The British call then iron soaps. Wicks ZN, Jones FN, Pappas SP (1999) Organic coatings science and technology, 2nd edn. Wiley-Interscience, New York. 

Mixed metal stabilizers. Mixed metal stabilizers are primarily used in flexible or semirigid PVC products. The most common are barium/zinc (Ba/Zn) metal salts. IVpical liquid barium, cadmium, and zinc stabilizer products consist of such salts as octoates, alkylphenolates, neo decanoates, naphthenates, and benzoates. Typical solid barium, cadmium, and zinc stabilizer products consist of the salts of such fatty acids as stearates or laurates. Generally, Ba/Cd products provide the best thermal stability, followed by Ba/Zn and finally Ca/Zn. However, Ba/Cd stabilizers have come under increased environmental and Occupational Safety and Health Administration (OSHA) pressure and are being replaced by cadmium-free products that are usually Ca/Zn and Ba/Zn. Several Ca/Zn stabilizers have been approved by the FDA for use in food-contact applications. 

Composite heat stabilizers are liquid or solid compounds based on salts or metal soaps and compounds based on organic tin. Metal salts include Ca-Mg-Zn, Ba-Ca-Zn, Ba-Zn, and Ba-Cd common organic acids include organic fatty acids, naphthenic acid, oleic acid, benzoic acid, and salicylic acid. 

The mechanism of drying is not yet fully understood. Hydroperoxides, cyclic peroxides and dimerization lead to crosslinking through the formation of C-C, C-O-O-C and C-O-C bonds. The reaction with oxygen is catalyzed by dryers, which are also called siccatives. They are oil-soluble salts of Co, Fe, Mn, Ce, Pb, Zr (order of decreasing activity) with mainly - linoleic, naphthenic or isooc-tanoic acids. Secondary or auxiliary dryers are the salts of Ca, Ba and Zn. They do not catalyze the autoxidation but enhance the efficiency and stability of primary dryers. 

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