New nitrogen-containing polymer with strengthening and hydrophobizing effect on paper and cardboard

A new nitrogen-containing product based on tall oil rosin, adipic acid and diethylenetriamine is capable of simultaneously exerting a strengthening and hydrophobizing effect on paper and cardboard made both from primary (cellulose) and secondary (waste paper) fibers. The strengthening effect is due to the presence in its structure of nitrogen-containing groups –NH₂ and –NH– capable of forming additional interfiber bonds with negatively charged hydroxyl groups of cellulose macromolecules. Hydrophobizing effect is provided by resin acids included in the product. Preparation of the product with preset physicochemical properties (acid number not more than 40 mg KOH/g, solubility in water, cationic character and thermal stability at a temperature of at least 135 °C) was carried out in three stages. The first stage is the tall oil resin acids modification with diethylenetriamine; the second stage is the polycondensation of the resin acid amides obtained in the first stage with adipic acid and diethylenetriamine; the final stage is water dilution of the product formed in the second stage, to a solids content of 10–12 %. In paper masses containing primary and secondary fibers glued with alkylketene dimers (Fennosize KD 225 YP), the replacement of the import strengthening agent (cationic starch Hi-Cat) with a new nitrogen-containing product allows us, first, to increase the dry strength of paper and cardboard and improve hydrophobicity and, secondly, to prevent undesirable process of “sticking” when storing paper samples (elementary layers of cardboard).

1. Khovanskii V. V, Dubovyi V. K., Kaizer P. M. The use of chemical auxiliaries in the production of paper and paperboard. Saint-Petersburg, Saint Petersburg State Technological University of Plant Polymers (SPb STUPP), 2013. 153 p. (in Russian).

2. Kozhevnikov S. Yu. Paper strengthening with cation-anionic polyacrylamide resin. Khimija Rastitel’nogo Syr’ ja = Chemistry of plant raw materials, 2011, no. 2, pp. 177–182 (in Russian).

3. Andreeva S. L., Kozhevnikov S. Yu., Dul’kin D. A., Dubovyi V. K. Theoretical basis of technology for increasing the strength of cardboard from recycled polymers. Khimija Rastitel’nogo Syr’ ja = Chemistry of plant raw materials, 2011, no. 1, pp. 179–181 (in Russian).

4. Lapin V. V. Specialized types of cationic starch for paper production. Tsellyuloza. Bumaga. Karton [Cellulose. Paper. Cardboard], 2000, no. 11–12, pp. 23–25 (in Russian).

5. Osipov P. V. Effects of synergism between synthetic polymers and cationic starch in recycled compositions. Tsellyuloza. Bumaga. Karton [Cellulose. Paper. Cardboard], 2011, no. 3, pp. 74–77 (in Russian).

6. Ostapenko A. A., Moroz V. N., Barbash V. A., Kozhevnikov S. Yu., Dubovyi V. K., Koverninskii I. N. Improving the quality of paper from waste paper with chemical functional substances. Khimija Rastitel’nogo Syr’ ja = Chemistry of plant raw materials, 2012, no. 1, pp. 187–190 (in Russian).

7. Chernaya N. V., Lamotkin A. I. Sizing paper and cardboard in acidic and neutral media. Minsk, Belarusian State Technological University, 2003. 345 p. (in Russian).

8. Blinushova O. I., Dul’kin D. A., Kozhevnikov S. Yu. Development of the theory of the mechanism of sizing the test liner with alkyl ketene dimersю Khimija Rastitel’nogo Syr’ ja = Chemistry of plant raw materials, 2008, no. 1, pp. 131–138 (in Russian).

9. Mishurina O. A., Ershova O. A. Methods of hydrophobization and strengthening of composite cellulose materials from secondary raw materials. Mezhdunarodnyi zhurnal prikladnykh i fundamental’nykh issledovanii = International Journal of Applied and Fundamental Research, 2016, no. 10, pp. 363–366 (in Russian).

10. Gordeiko S. A., Zholnerovich N. V., Chernaya N. V., Fleisher V. L., Drapeza A. A., Andrukhova M. V., Makarova D. S. Increasing the strength of packaging paper using nitrogen-containing compounds. Trudy BGTU. Khimiya, tekhnologiya organicheskikh veshchestv i biotekhnologiya = Proceedings of BSTU. Chemistry, technology of organic substances and biotechnology, 2013, no. 4, pp. 165–168 (in Russian).

11. Fleisher V. L., Chernaya N. V., Makarova D. S., Gordeiko S. A., Germas’ A. V. Synthesis of new polymers on the basis of resin acids amides for strengthening of recycled paper types. Trudy BGTU. Khimiya, tekhnologiya organicheskikh veshchestv i biotekhnologiya = Proceedings of BSTU. Chemistry, technology of organic substances and biotechnology, 2014, no. 4, pp. 134–136 (in Russian).

12. Gordeiko S. A., Chernaya N. V., Zholnerovich N. V., Fleisher V. L., Makarova D. S. Peculiarities of using polycondensation products of adipic acid with diethylenetriamine and resin acids in the paper technology. Trudy BGTU. Khimiya, tekhnologiya organicheskikh veshchestv i biotekhnologiya = Proceedings of BSTU. Chemistry, technology of organic substances and biotechnology, 2014, no. 4, pp. 130–133 (in Russian).

13. Andrukhova M. V., Fleisher V. L. Synthesis and properties of copolymers of dicarboxylic acids, polyamine and amides of rosin acid rosin. Tekhnologiya–2016: Materialy XIХ mezhdunarodnoi nauchno-tekhnicheskoi konferentsii [Technology–2016: Proceedings of the XIX International Scientific and Technical Conference]. Severodonetsk, 2016, pp. 12–14 (in Russian).

14. Fleisher V. L., Chernaya N. V., Shishakov E. P., Makarova D. S., Andrukhova M. V., Gordeiko S. A. Method for producing polyamide resin. Patent BY no. 21140, 2017 (in Russian).

15. Nakanishi K. Infrared absorption spectroscopy. San Francisko, Holden Day, 1962. 223 p.

16. Lirova B. I., Rusinova E. V. Analysis of polymer composite materials. Ekaterinburg, Publishing house of the Ural University, 2008. 187 p.