Esters dibutyl phthalate

Plasticizers. Addition of softeners to NBR improve tack and adhesion properties. The most common plasticizers are esters (dibutyl phthalate, tricresyl phosphate), ester gums, alkyd resins, etc. 

The use of monohydric alcohol esters as PVC plasticizers had its beginning in the decade of the thirties. Plasticization of PVC was first demonstrated by W. D. Semon of B. F. Goodrich(1). Semon s patent gave examples of plasticizers such as dibutyl phthalate and other unrelated compounds. However, the claims were limited to non specific aromatic substances, liquid aromatic nitro compounds, and specific aromatic nitro compounds. The first commercially used plasticizers for PVC were those already available and used as cellulosic plasticizers, such as the monohydric alcohol ester—dibutyl phthalate. 

Benzenedicarboxylic acid, dibutyl ester dibutyl phthalate 2206, 2896 ... 

EPA. 1983a. Reportable quantity document for 1,2-benzene dicarboxylic acid, dibutyl ester (dibutyl phthalate). Washington, DC U.S. Environmental Protection Agency, Office of Solid Waste and Emergency Response. External Review Draft. ECAO-CIN-R039. 

Benson R (2009) Hazard to the developing male reproductive system from cumulative exposure to phthalate esters-dibutyl phthalate, diisobutyl phthalate, butylbenzyl phthalate, diethylhexyl phthalate, dipentyl phthalate, and diisononyl phthalate. Regul Toxicol Pharm... 

In rubber industries the term plasticizer is used more frequently to describe the class of materials that includes esters, pine tars and low molecular weight polyethylene. Phthalates are among the most frequently used esters. Dibutyl phthalate (DBP) tends to give soft compounds with tack dioctyl phthalate (DOP) is less volatile and tends to produce harder compounds because of its higher molecular weight. Polymeric esters such as polypropylene adipate can also be used when low volatility is needed along with good heat resistance. ... 

Hydrochloride Phthalic Acid, Dibutyl Ester Dibutyl Phthalate... 

Uses. Phthabc anhydride is used mainly in plasticizers, unsaturated polyesters, and alkyd resins (qv). PhthaUc plasticizers consume 54% of the phthahc anhydride in the United States (33). The plasticizers (qv) are used mainly with poly(vinyl chloride) to produce flexible sheet such as wallpaper and upholstery fabric from normally rigid polymers. The plasticizers are of two types diesters of the same monohydric alcohol such as dibutyl phthalate, or mixed esters of two monohydric alcohols. The largest-volume plasticizer is di(2-ethylhexyl) phthalate [117-81-7] which is known commercially as dioctyl phthalate (DOP) and is the base to which other plasticizers are compared. The important phthahc acid esters and thek physical properties are Hsted in Table 12. The demand for phthahc acid in plasticizers is naturally tied to the growth of the flexible poly(vinyl chloride) market which is large and has been growing steadily. 

The role of specific interactions in the plasticization of PVC has been proposed from work on specific interactions of esters in solvents (eg, hydrogenated chlorocarbons) (13), work on blends of polyesters with PVC (14—19), and work on plasticized PVC itself (20—23). Modes of iateraction between the carbonyl functionaHty of the plasticizer ester or polyester were proposed, mostly on the basis of results from Fourier transform infrared spectroscopy (ftir). Shifts in the absorption frequency of the carbonyl group of the plasticizer ester to lower wave number, indicative of a reduction in polarity (ie, some iateraction between this functionaHty and the polymer) have been reported (20—22). Work performed with dibutyl phthalate (22) suggests an optimum concentration at which such iateractions are maximized. Spectral shifts are in the range 3—8 cm . Similar shifts have also been reported in blends of PVC with polyesters (14—20), again showing a concentration dependence of the shift to lower wave number of the ester carbonyl absorption frequency. 

Additional commercial markets for 1-butanol include plasticizer esters (eg, dibutyl phthalate), butylated melamine—formaldehyde resins, and mono-, di-, and tributylamines. 

Toluidine Red, like P.O.5, is by volume one of the 20 largest organic pigments in the world. It shows insufficient fastness towards solvents in fact, it is partially inferior even to monoazo yellow pigments, which is also true for other members of this class. Its stability to alcohols, aliphatic and aromatic hydrocarbons, and dibutyl phthalate equals step 3 on the 5 step scale P.R.3 is even less fast to esters and ketones. 

P.Y.154, which was introduced in the mid-seventies, affords a somewhat greenish yellow shade of very high lightfastness and weatherfastness. Its shade is distinctly redder than that of P.Y.175 and noticeably redder than that of P.Y.151, both of which are also members of the benzimidazolone series. P.Y.154 is completely or at least almost completely resistant to the major organic solvents. The list includes alcohols, esters, such as butylacetate, aliphatic and aromatic hydrocarbons, such as mineral spirits or xylene, and dibutyl phthalate. 

In terms of stability to organic solvents, P.Br.23 performs like other red pigments within its class. It is thus somewhat inferior to the yellow products. Regarding fastness to various ketones, esters, and alcohols, as well as to dioctyl phthalate and dibutyl phthalate, P.Br.23 equals step 3 1 and step 4, respectively, on the 5 step scale. P.Br.23 is broad in scope, but its main field of application is in plastics. 

Synonyms AI3-00283 Araldite 502 1,2-Benzenedicarboxylate 1,2-Benzenedicarboxylic acid, dibutyl ester o-Benzenedicarboxylic acid, dibutyl ester Benzene-o-dicarboxylie acid, di-/3-butyl ester BRN 1914064 Butyl phthalate /r-Butyl phthalate Caswell No. 292 Celluflex DPB CCRIS 2676 DBF Dibutyl-1,2-benzenedicarboxylate Dibutyl phthalate EINECS 201-557-4 Elaol EPA pesticide chemical code 028001 Hexaplas M/B Morflex 240 NSC 6370 Palatinol C Phthalic acid, dibutyl ester Polycizer DP PX 104 RCRA waste number U069 Staflex DBF UN 3082 UN 9095 Uniflex DBF Unimoll DB Uniplex 150 Witicizer 300. 

Kawano M Tjxicological studies on the phthalate esters. 1. Inhalation effects of dibutyl phthalate on rats. Japan J Hyg 35 684-692, 1980... 

Phthalate, Butyl Benzyl Butyl Benzyl Phthalate under Esters Phthalate, Dibutyl Dibutyl Phthalate, n under Esters Phthalate, DiethyUiexyl Diethylhexyl Phthalate under Esters Phthalate, Dimethyl Dimethyl Phthalate under Esters Phthalate, Dioctyl Di-ti-octyl Phthalate under Esters Picric Acid Trinitrophenol under Nitrophenols Platinum Plutonium... 

Ester Content (as Ethyl Acetate) — min 85 0 max 88.0%. It shall be detd in accordance with ASTM D1617-69, described in Annual Book of ASTM Standards, Part 20(1972), 736-39 Note 1 The method described in ASTM D1617— 69 applies not only to EtAcet, but also to other esters, such as N-butyl acetate, isopropyl acetate, acetate ester of ethylene glycol monoethyl ether, sec-butyl acetate, amyl acetate, dibutyl phthalate and iso butyl acetate... 

Jensen et al.16 also studied the decomposition of 5-ethoxythiatriazole in dibutyl phthalate solution in the presence of trichloroacetic acid, tripentylamine, 4-benzylpyridine, anhydrous aluminum chloride, or trinitrobenzene, but practically no effect on the reaction rate was observed. However, later experiments have shown that the decomposition can indeed by enhanced catalytically by Lewis acids under conditions where the catalyst is not sequestered by complex formation with the solvent.19 Thus the addition of aluminum chloride to 5-phenylthiatriazole in benzene causes a brisk evolution of nitrogen at room temperature, and if instead boron tribromide is added, a rather violent reaction sets in. However, when esters or ethers are used as... 

Aromatic carbonic add esters dibutyl, dioctyl, di-(2-ethylhexyl) phthalate diocty-ladipate, dioctylsebacate, trihexyltrimellitate. 

Analysis of phthalates in air may be performed by sampling 1 to 200 L air and collecting the esters over a 0.8 pm cellulose ester membrane. The phthalates are desorbed with carbon disulfide and the eluant is injected into a GC equipped with an FID. A stainless steel column 2 m x 3 mm OD, containing 5% OV-101 on 100/120 Chromosorb W-HP was originally used in the development of this method (NIOSH Method 5020) for dibutyl phthalate and bz,v(2-cthylhexyl)phtha-late. Any other equivalent GC column listed above may also be used. 

Dibutyl Phthalate. Mixture of the ester and chlorine in a bomb exploded at 118°C.10... 

Amyl, butyl, and iso-propyl acetates are all made from acetic acid and the appropriate alcohols. All are useful lacquer solvents and their slow rate of evaporation (compared to acetone or ethyl acetate) prevents the surface of the drying lacquer from falling below the dew point, which would cause condensation on the film and a mottled surface appearance (blushing). Other esters of importance are used in perfumery and in plasticizers and include methyl salicylate, methyl anthranilate, diethyl-phthalate, dibutyl-phthalate, and di-2-ethylhexyl-phthalate. 

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