Plasticizers diethyl phthalate

Cellulose acetate is incompatible with strongly acidic or alkaline substances. Cellulose acetate is compatible with the following plasticizers diethyl phthalate, polyethylene glycol, triacetin, and triethyl citrate. 

Glass transition temperature a glass transition temperature of 42.5°C has been reported for polyvinyl acetate phthalate the glass transition temperature was shown to fall with the addition of increasing amounts of the plasticizer diethyl phthalate. ... 

Additives used in final products Plasticizers diethyl phthalate, triethyl citrate, triacetin, dibutyl tartrate, glycerol, propylene glycol, tripropionin, triacetin citrate, acetylated monoglycerides ... 

Di-n-butyl phthalate (DBP) Diethyl phthalate (DEP) Butyl benzyl phthalate (BBP) Di(2-ethylhexyl) phthalate (DEHP) a a O O y Plasticizers in PVC production. Component in the manufacture of cosmetics, inks, and adhesives - SW levels are near to 10 pg L 1 in rivers, between 0.5-1 pg L 1 and in sea water between 0.005-0.7 pg L-1 - US streams 2.5 pg L 1 (DEHP) and 0.25 pg L"1 (DEP) [4] Fast biodegradation under aerobic conditions. Half-life in water 1-15 days Half-life in soils 7 days -several months [65]... 

Plasticizers are used in the polymer industry to improve flexibility, workability, and general handling properties. Dibutyl sebacate and phthalates, such as dibutyl phthalate, diethyl phthalate, dicyclohexyl phthalate, butylbenzyl phthalate, and diphenyl-2-ethylhexyl phosphate, serve widely as plasticizers in vinylidene chloride copolymers, nitrocellulose-coated regenerated cellulose film, and cellulose acetate (Castle et ah, 1988a). In PVC, di(2-ethylhexyl)... 

Typical gas-generating pyrolants include (1) AP pyrolant composed of AP, ap(0.50), and HTPB, htpb(0-50), which is cured with isophorone diisocy-anate(lPDl) (2) NP pyrolant composed of NC, nc(0-70) and NG, ng(0-30), which is plasticized with diethyl phthalate (DEP) and (3) GAP pyrolant composed of gly-cidyl azide copolymer, qap(0-85), which is cured with hexamethylene diisocy-anate(HMDl) and cross-linked with trimethylolpropane (TMP). 

Triacetin ( ) Diethyl phthalate (DEP) Function as plasticizers and also desensitizer for nitroglycerine (NG) used as an explosive plasticizer for DB and CMDB propellants. 

In this technique, the material, say ethyl cellulose, is first plasticized and then a sleeve of a definite size and shape is extruded. This sleeve is applied to the grain by a special technique using ethyl cellulose cement which is prepared by dissolving ethyl cellulose in cellosolve-diethyl phthalate (1 1) mixture or ethyl lactate-butyl acetate (1 4) mixture. 

Cellulose acetate phthalate (CAP) dissolves at pH higher than 6 and is soluble in ketones, ethers, esters, and alcohols. Permeation of water vapor and gastric fluids is a concern but can be overcome by adding other materials such as shellac. Plasticizers that are used with CAP include diethyl phthalate, triacetin, tributyl citrate, and acetylated monoglyceride. 

To determine whether the plasticizer was functioning as solvent, attempts were made to extract the analyte (salicylic acid) with liquid diethyl phthalate. The distribution ratio for this extraction was negligibly small. This finding indicated that the PVC polymer rather than the phthalate ester plasticizer served as the solvent. 

Other formulation parameters that may be used to modulate the release include the ratio (relative concentrations) of polymers in the case of incorporation of a mix of two or more polymers as primary coating material, the properties of the core material, and the amount of plasticizers used, which affects the strength of the coat. Plasticizers with low water solubility such as dibutyl sebacate, diethyl phthalate, tri-acetin, triethyl citrate, and acetylated monoglyceride result in delaying... 

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. 

Hydrophobic polymers and films, such as paraffin wax and poly (vinyl chloride), show no change in stiffness modulus when flooded with water. On the other hand, butyl alcohol on a paraffin wax film causes a slow, slight increase of stiffness modulus over a period of several minutes. The effect of benzene on paraffin films is similar to that of methanol on PVA. A poly (vinyl chloride) film is unaffected by plasticizers such as dimethyl and diethyl phthalate over short time periods. However, PVC gives rise to the ultrasonic modulus anomaly when contacted with tetrahydrofuran, a strong solvent for PVC. The plasticizing effect of dibutyl phthalate on polystyrene has been demonstrated by ultrasonic impedometry (16). No anomalies were found. 

Plasticizer Used as component of film coating solutions to enhance spread of coat over tablets, beads, and granules Diethyl phthalate, glycerin... 

R. Okada, and H. Fujita Viscosity of poly(alkyl methacrylate) plasticized with diethyl phthalate. Poly-(n-butyl methacrylate). J. Phys. Chem. 67, 1228 (1963). 

Diethyl phthalate is used as a plasticizer for film coatings on tablets, beads, and granules at concentrations of 10-30% by weight of polymer. 

Ethylcellulose is compatible with the following plasticizers dibutyl phthalate diethyl phthalate dibutyl sebacate triethyl citrate tributyl citrate acetylated monoglyceride acetyl tributyl citrate triacetin dimethyl phthalate benzyl benzoate butyl and glycol esters of fatty acids refined mineral oils oleic acid stearic acid ethyl alcohol stearyl alcohol castor oil corn oil and camphor. 

Plasticizers are often included in polyvinyl acetate phthalate coating formulations to enable a continuous, homogeneous, noncracking film to be produced. Polyvinyl acetate phthalate has been shown to be compatible with several plasticizers such as glyceryl triacetate, triethyl citrate, acetyl triethylcitrate, diethyl phthalate and polyethylene glycol 400. 

Because diethyl phthalate is not a part of the chain of chemicals, or polymers, which makes up the plastics, it can be released fairly easily from products in which it is used. Exposure may occur when you use plastics that contain it, and when you eat food from plastic containers made with it. This substance has been found in at least 248 of the 1,430 National Priorities List sites identified by the Environmental Protection Agency (EPA). 

Use Alkyd resins, plasticizers, hardener for resins, polyesters, synthesis of phenolphthalein and other phthaleins, many other dyes, chlorinated products, pharmaceutical intermediates, insecticides, diethyl phthalate, dimethyl phthalate, laboratory reagent. 

Tomic, E.A.J. 1965. Glass transition temperatures of poly(methyl methacrylate) plasticized with low concentrations of monomer and diethyl phthalate. Applied Polymer Science 9, 3745-3818. 

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