  kalukova-sysoev-garifullina-16-19-tik-2023-1-ru.pdf |
- 3
- THE EFFECT OF HYDROXYL-CONTAINING LOW-MOLECULAR URETHANES ON HYGIENIC CHARACTERISTICS OF CLOTHING LEATHER
- Kalukova M. N., Sysoev V. A., Garifullina A. R. The effect of hydroxyl-containing low- molecular urethanes on hygienic characteristics of clothing leather. Technologies & Quality. 2023. No 1(59). P. 16–19. (In Russ.) https://doi.org/10.34216/2587-6147-2023-1-59-16-19.
- DOI: https://doi.org/10.34216/2587-6147-2023-1-59-16-19
- УДК: 675.024.474
- EDN: CXPKJY
- Publish date: 2023-02-18
- Annotation: In this paper, the main hygienic properties of clothing leather made from sheepskin treated with solutions of hydroxyl-containing non-isocyanate urethanes are investigated in order to reduce the use of chromium compounds. The article presents the values of vapour permeability, wetness, hygroscopicity, mois- ture loss, porosimetry data. It has been established that as a result of processing a semi-finished product of clothing leather from sheepskin with synthesised urethanes, the welding temperature increased by 5…9 °C. Indicators of hygroscopicity and moisture loss do not differ significantly from control samples. However, moisture capacity and wettability are reduced by 9…20 %, which indicates the additional ability of hydrox- yl-containing urethanes to partially hydrophobise. It has been experimentally proven that the use of non- isocyanate hydroxyl-containing urethanes as additional structuring agents for sheepskin clothing leather can significantly improve the quality of dressing and does not cause a negative impact on the hygienic parame- ters of the leather semi-finished product.
- Keywords: clothing leather, sheepskin, structuring, retanning, hydroxil-containing non-isocyanate ure- thanes, hygienic characteristics, liquid-vapour porometry method
- Literature list: 1. Kalukova M. N., Garifullina A. R., Sysoev V. A., Kalukov V. I. Non-isocyanate urethanes as structuring agents in skin finishing. Vestnik Tekhnologicheskogo universiteta [Bulletin of Technological University]. 2017;19:64–67. (In Russ.) 2. Kalukova M. N., Sysoev V. A., Kalukov V. I. Monomeric hydroxyl-containing compounds as accompa- nying rationalizers of the skin structuring process. Nauchnoe obespechenie tekhnicheskogo i tekhnologi- cheskogo progressa: sb. statej Mezhdunarodnoj nauchno-prakticheskoj konferencii (g. Orenburg) [Scien- tific support of technical and technological progress]. Ufa, AETERNA, 2018, pp. 48–51. (In Russ.) 3. Kalukova M. N., Garifullina A. R., Sysoev V. A. Non-isocyanate hydroxyl-containing urethanes in the leather and fur industry as environmentally safe staplers. Innovacionnye materialy i tekhnologii v kozhe- venno-mekhovoj promyshlennosti: tez. IIІ Mezhdunar.-prakt. zaochnogo seminara [Innovative materials and technologies in the leather and fur industry]. Kiev, Kiev National University of Technologies and De- sign Publ., 2017, pp. 67–69. (In Russ.)