2,2,4-Trimethyl-l ,3-pentanediol

Trimethyl-l,3-pentanediol (7) is a white, crystalline soHd. It is used in surface coating and unsaturated polyester resins. It also appears promising as an intermediate for synthetic lubricants and polyurethane elastomers and foams. 

Manufacture and Processing. 2,2,4-Trimethyl-l,3-pentanediol can be produced by hydrogenation of the aldehyde trimer resulting from the aldol condensation of isobutyraldehyde [78-84-2]. 

The reaction products of TYZOR TPT with 2—4 moles of 1,3-diols having two to three alkyl substituents, such as 2,2,4-trimethyl-l,3-pentanediol, gives complexes that could be used as cross-linking agents for hydroxy group containing powdered lacquer resins (76). 

Trimethyl-l,3-pentanediol (TMPD), the hydrogenated aldol condensation product of isobutyraldehyde, is a modifying agent in alkyd resins (qv), high sohds coatings, and moisture-set inks. 

Solubility of 1-butene in 2,2,4-trimethyl-l,3-pentanediol monoisobutyrate. The solubility data were first modeled with the empirical equation [11] giving mole fraction of dissolved gas (x,)... 

Steele, W.V., Chirico, R.D., Knipmeyer, S.E., and Nguyen, A. Vapor pressure, heat capacity, and density along the saturation line measurements for benzenamine,butylbenzene, sec-butylbenzene, ferf-butylbenzene, 2,2-dimethylbutanoic acid, trideca-fluoroheptanoic acid, 2-butyl-2-ethyl-l, 3-propanediol, 2,2,4-trimethyl-l, 3-pentanediol, and l-chloro-2-propanol, J. Chem. Eng. Data, 47(4) 648-666, 2002a. 

Many commercially important isobutyraldehyde derivatives are prepared through aldol and/or Tischenko condensation reactions. For example, isobutyraldehyde undergoes the aldol reaction to form isobutyraldol (2,2,4-trimethyl-3-hydroxypentanal [918-79-6]) which, when hydrogenated, gives 2,2,4-trimethyl-l,3-pentanediol (TMPD) [144-19-4],... 

Glycols such as neopentyl glycol, 2,2,4-trimethyl-l,3-pentanediol, 1,4-cyclohexanedimethanol, and hydroxypivalyl hydroxypivalate are used in the synthesis of polyesters (qv) and urethane foams (see Foamed PLASTICS). Their physical properties are shown in Table 1 (1—6). 

Gu and Soucek reported the synthesis of ceria nanoparticle in hydrocarbon solvents. Cerium-oleate complex was refluxed in high boiling point organic solvents such as octyl ether, 1-tetradecene, decalin, dipropylene glycol monomethyl ether, dipropylene glycol n-butyl ether, and 2,2,4-trimethyl-l,3-pentanediol monoisobutyrate, to decompose and form ceria nanocrystals. The sizes of the nanocrystals are uniform and could be... 

Particle deformation and polymer diffusion can only occur at temperatures above the glass transition temperature of the polymer. Final coatings, however, are required to be at temperatures considerably below the glass transition temperature. To get around this problem, it is common to add plasticizers to water borne latex dispersions to lower the glass transition temperature of the constituent polymer during the film formation process. Subsequent evaporation of the plasticizer results in a hard final coating. A common plasticizer is 2,2,4-trimethyl-l,3-pentanediol monoisobutyrate, usually referred to as Texanol Ester Alcohol. 

FIGURE 5.4. Decoupled 13C-spectrum of 2,2,4-trimethyl-l,3-pentanediol. Solvent used was CDCh at 25.2 MHz 5000-Hz sweepwidth. From Johnson and Jankowski (1972), spectrum No. 324, with permission. 

Gas chromatogram of vapour above plasticized PVC flooring collected by headspace analysis after warming to 70°C. The chromatogram shows the presence of two plasticizers DEHP and TXIB (2,2,4-trimethyl-l,3-pentanediol diisobutyrate). TXIB imparts lower tack and increased stain resistance to PVC products compared with those containing DEHP alone. 

See Sodium dodecylbenzenesulfonate Nexcoat 600. See Neopentyl glycol Nexcoat 730. See 2,2,4-Trimethyl-l, 3-pentanediol... 

Trimethyl-l,3-pentanediol diisobutyrate. See Trimethyl-1,3-pentanediol, 2,2,4-diisobutyrate... 

Trimethyl-l, 3-pentanediol isobutyrate intermediate, esters surfactants... 

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