Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 931-40-8, is researched, SMILESS is O=C1OCC(CO)O1, Molecular C4H6O4Journal, Materials Today Communications called Feasibility of polyamines and cyclic carbonate terminated prepolymers in polyurethane/polyhydroxyurethane synthesis, Author is Kotanen, Soilikki; Laaksonen, Timo; Sarlin, Essi, the main research direction is cyclic carbonate terminated prepolymer polyurethane polyhydroxyurethane polyamine.Computed Properties of C4H6O4.
Polyurethanes are a well-established part of adhesive markets. However due to the toxicity of di-isocyanates used in the synthesis, finding an alternative route to synthesize polyurethanes is increasingly important. One strategy is to use cyclic carbonate terminated prepolymers with polyamines to yield polyhydroxyurethanes. This research highlights the possibility to use com. available polyurethane prepolymers with different isocyanate chemistries for cyclic carbonate terminated prepolymer synthesis with the help of glycerol carbonate and a catalyst. These synthesized prepolymers were used in a screening study with different com. available low toxic amines. It was observed that when secondary amines were used, the reaction advanced at room temperature with no further heating required. The development of lap shear strength over time on stainless steel, gel content, tensile strength and elongation were measured from room temperature cured polymers. The synthesized polyurethane/polyhydroxyurethane (PU/PHU) hybrid materials had high initial lap shear strength close to current industrial polyurethane adhesives. The strength development over time was negligible. Full conversions were seen within one month from the reaction. Tensile strength levels were slightly lower than typical industrial polyurethane adhesives. Even though the lap shear strength results and gel contents at room temperature were on a good level, curing at elevated temperature had a pos. impact on them. The best performing combination was cyclic carbonate functionalized hexamethylene di-isocyanate prepolymer with multifunctional polyethyleneimine amine. In short, di-isocyanate free PU/PHU hybrid materials were successfully synthesized from com. raw materials and their performance was comparable with current industrial polyurethane adhesives.
There is still a lot of research devoted to this compound(SMILES：O=C1OCC(CO)O1)Computed Properties of C4H6O4, and with the development of science, more effects of this compound(931-40-8) can be discovered.