For example, DuPont has found ways to end emissions of nitrous oxide, a greenhouse gas, that once flowed from its process for making adipic acid, an ingredient in nylon.
32.
For acids with carboxylic groups at position 1 and 6 this dehydration causes loss of carbon dioxide and water to form a cyclic ketone, for example adipic acid will form cyclopentanone.
33.
Later work focused on the activation of C-H bonds by transition metal complexes and free radical oxidation of cyclohexane for the production of adipic acid, an intermediate in the manufacture of nylon.
34.
It is found that the cavity dimensions are optimal for inclusion of suberic acid but that with a longer acid sebacic acid or a shorter acid adipic acid the interaction is less favorable.
35.
Historically, adipic acid was prepared by oxidation of various fats, thus the name ( ultimately from Latin " adeps ", " adipis " " animal fat "; cf . adipose tissue ).
36.
On February 28, 1935, Gerard Berchet, under the direction of Carothers, produced a half-ounce of polymer from hexamethylenediamine and adipic acid, creating polyamide 6-6, the substance that would come to be known as Nylon.
37.
RadiciGroup manages diversified businesses worldwide focused on Chemicals, Plastics and Synthetic Fibres with total control over its production chain, from products such as adipic acid, polyamide 6 and polyamide 6.6 to yarns and engineering plastics.
38.
A low temperature example is work by Kitagawa, et al . who used a two-dimensional oxalate-bridged anionic layer framework as the host and introduced ammonium cations and adipic acid molecules into the pores to increase proton concentration.
39.
The anionic ( HO 2 C ( CH 2 ) 4 CO 2 " ) and dianionic ( " O 2 C ( CH 2 ) 4 CO 2 " ) forms of adipic acid are also referred to as adipate.
40.
While working on the air oxidation of cyclohexane to adipic acid ( an intermediate in the preparation of nylon-66 ) he discovered a series of bis ( pyridylimino ) isoindoline complexes of cobalt to be very effective catalysts for the decomposition of the intermediate cyclohexylhydroperoxide.
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