**Acknowledgements**

In the case of TAA: 0.98 ppm, s, 6H, –NH2; 1.50 ppm, p, –CH2–CH2; 1.70 ppm, t, 6H, N–CH2–

In the case of TAED**:** 1.36 ppm, s, 8H, –NH2; 1.60 ppm, p, –CH2–CH2; 2.46 ppm, t, 8H, N–

During hydrogenation process undesired reactions take place, leading to the formation of low‐molecular weight products. After hydrogenation of poly(nitriles), besides the main products being TAA and TAED, the n‐butylamine is one of the most abundant by‐ products present in the reaction mixture. It is formed by cleavage of bond between nitrogen heteroa‐

New generation additives for polymers such as plasticizers and cross‐linking agents were

All hydrogenation products were analyzed using different analytical instrumental techniques

The new generation of plasticizers such as di(n‐ and isononyl)cyclohexane‐1,2‐dicarboxylates (DINCH components) are the new group of specific and safe plasticizers applied as the substitutes of di(alkyl) phthalates, especially di(2‐ethylhexyl) phthalate (DEHP) and di(n‐ and

The identification of these compounds permits us to determine both the structures of the main products and their by‐products as well. *Cis* and *trans* isomers of the cyclohexane‐1,2‐ dicarboxylates may be applied to the identification of some DINCH constituents extracted from polymers and also in the elucidation of their structures in the human metabolites. ESI/MS mode analysis of these compounds and the knowledge about their mass fragmenta‐ tion enable their detection, although without differentiation between individual *cis* and *trans* isomers. The obtained identification results concerning the determination of the indi‐ vidual chemical structures of some *cis* and *trans* di(n‐ and isoalkyl(C4–C9))cyclohexane‐1,2‐ dicarboxylates isomers (DINCH) maybe used in their determination of exposure and risk

Also, poly(amines) possessing usually more than two functional groups are very useful as cross‐linking agents and are used in the modification of physicochemical properties of the

The obtained results from the analysis of the final product of hydrogenation reaction of both *cis* and *trans* di(n‐ and isoalkyl(C4–C9))cyclohexane‐1,2‐dicarboxylates isomers (DINCH) and branched poly(amines) are useful in the optimization of processes of their production in an

H NMR).

synthesized in the catalytic hydrogenation process in the presence of Ni catalyst.

such as GC/MS, ESI/MS, and spectroscopic techniques (e.g., 1

CH2–CH2, 2.50 ppm, s, 4H, N–CH2–CH2–N, 2.75 ppm, t, 8H, –CH2–NH2.

242 New Advances in Hydrogenation Processes - Fundamentals and Applications

CH2, 2.70 ppm, t, 6H, –CH2–NH2.

tom and β‐carbon atom from acrylonitrile.

isononyl) phthalates in polymers.

epoxy resins by the most effective chemicals.

**4. Conclusions**

assessments.

industrial scale.

The part of this work was realized within the INNTECH Project "New generation of cross‐ linking agents for epoxy resins." Research was sponsored by The National Centre for Research and Development under grant no INNOTECH‐K1/IN1/49/150947/NCBR/12. The authors would like to thank Dr. B. Poźniak and I. Semeniuk (M.Sc.) for spectrometric analyses of some hydrogenation products.
