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Neopentyl glycol (IUPAC name: 2,2-dimethylpropane-1,3-diol) is an organic chemical compound. It is used in the synthesis of polyesters , paints , lubricants , and plasticizers . When used in the manufacture of polyesters, it enhances the stability of the product towards heat, light, and water.
TMP is produced via a two step process, starting with the condensation of butyraldehyde with formaldehyde: CH 3 CH 2 CH 2 CHO + 2 CH 2 O → CH 3 CH 2 C(CH 2 OH) 2 CHO. The second step entails a Cannizaro reaction: CH 3 CH 2 C(CH 2 OH) 2 CHO + CH 2 O + NaOH → CH 3 CH 2 C(CH 2 OH) 3 + NaO 2 CH. Approximately 200,000,000 kg are produced ...
In the production process, two-thirds of the triethylaluminium produced is recycled back into the reactor, and only one-third is used to produce the fatty alcohols. The recycling step is used to produce triethylaluminium at a higher yield and with less time. Triethylaluminium reacts with ethylene to form higher molecular weight trialkylaluminium.
Dibromo neopentyl glycol diglycidyl ether is a brominated version of neopentyl glycol diglycidyl ether. It is an aliphatic organic chemical in the glycidyl ether family that is used in epoxy resin formulations. It has the molecular formula C 11 H 18 Br 2 O 4
TME is an intermediate in the production of alkyd and polyester resins, powder coating resins, synthetic lubricants based on polyol esters, stabilizers for plastics, plasticizers, and pigment coatings based on titanium dioxide. Trimethylolethane based resins have superior weatherability and resistance to alkali and heat.
Pentaerythritol was first reported in 1891 by German chemist Bernhard Tollens and his student P. Wigand. [5] It may be prepared via a base-catalyzed multiple-addition reaction between acetaldehyde and 3 equivalents of formaldehyde to give pentaerythrose (CAS: 3818-32-4), followed by a Cannizzaro reaction with a fourth equivalent of formaldehyde to give the final product plus formate ion.
Neopentyl glycol and epichlorohydrin are reacted in the presence of a Lewis acid catalyst to form a halohydrin. This is followed by washing with sodium hydroxide in dehydrochlorination step. This forms Neopentyl glycol diglycidyl ether. [7] The waste products are water and sodium chloride and excess caustic soda.
Hydroxypivalic acid neopentyl glycol ester is produced by a Tishchenko reaction from hydroxypivaldehyde in the presence of a basic catalyst (e.g., aluminium oxide). [7] The Tishchenko reaction of paraformaldehyde in the presence of aluminum methylate or magnesium methylate forms methyl formate. [8]