Synthesis and Properties of Novel Non-Ionic Polyurethane Dispersion Based on Hydroxylated Tung Oil and Alicyclic Isocyanates

Abstract

Hydroxylated Tung oil (HTO) based nonionic polyurethane dispersion (HTO-NPUD) were synthesized using dicyclohexyl methane diisocyanate (HMDI) and HTO as main hydrophobic materials whereas polyethylene glycol-800 (PEG-800) as hydrophilic chain extender. To effectively study the effects of HTO on properties of NPUD, polypropylene glycol-400(PPG-400) based NPUD was prepared by HMDI reacting with PPG-400 and PEG-800. The structures of those novel nonionic polyurethane dispersions were characterized by FTIR and 1 H NMR. Moreover, particle size and size distribution, cloud point and surface tension had been investigated. Results showed that, by comparing with PPG based NPUD (PPG-NPUD), the introduction of HTO into NPUD result in larger particle size and more uniformed particle size distribution, higher cloud point and lower surface tension.

Continuous Production of Water-Borne Polyurethanes: A Review

“…Anionic water-borne polyurethanes are the main finishing agents for leather, while cationic water-borne polyurethanes are used as sealers and primers in order to give leather a soft, natural, and plump appearance [45]. They have been used as a softener and anti-wrinkle agent for fabrics by many companies and are very popular with consumers [46].…”

Investigation on the technical performance and workability of hot-melting road marking materials using for the high-altitude area

“…This dispersion can be used as a potential surfactant to improve the initial performance of marking coatings. Vikash Mishra [20] and others prepared a new waterborne UV curable polyurethane dispersion using castor oil, IPDI, DMPA, and HEMA as raw materials by acetone method. The results show that these new UV PUDs have application potential in coatings.…”

“…Coatings are a kind of polymer material with complex and diverse molecular structures, and molecular chains will break during oxidation [20,21]. In the oxidation resistance process of plastics, rubber, and other polymers, it is found that the addition of antioxidants and light stabilizers can effectively slow down the aging of polymers and prolong the service life of polymers [22,23].…”

Synthesis of MDI-50 and Tung Oil-Based Non-Ionic Waterborne Polyurethanes

“…Prior to introducing into PUD, tung oil should be modified into polyol. In this study, the hydroxylation of tung oil (HTO) is obtained by modifying the glyceride so that the three conjugated double bonds could be remained in HTO [14,15]. The main structures of HTO are shown in Figure 1.…”