PROBLEM TO BE SOLVED: To provide an environmentally-friendly polyester resin composition which has excellent oxygen absorbing power, suppresses yellowing in an alkali washing step in a recycling treatment process, and can be recycled as a polyester resin.高尾 幸博...
Huang, Yan-Jyi,,Chen, Lih-Der.Effects of chemical composition and structure of unsaturated polyester resins on the miscibility, cured sample morphology and mechanical properties of styrene/unsaturated polyester/low-profile additive ternary systems: 2 Mechanical properties. Polymer . 1998...
It is found that occurring physico-chemical processes result in essential changes of chemical composition of water-soluble organic matters, wherein original structures of reagents, as well as products of their hydrolytic transformations, are discovered. Polyester, nitrogenous and hydrocarbonic structures, ...
In recent years, significant progress has been made in the development of polymeric materials, driving rapid expansion in associated industries and a surge in plastic production and usage. Consequently, the substantial generation of plastic waste has raised environmental concerns. One critical issue is ...
The chemical synthesis via ring-opening polymerization (ROP) of cyclic esters (lactones or lactides), a process typically catalyzed by a metal-based or organic catalyst, offers an alternative route to such technologically important biodegradable aliphatic polyesters21,22,23,24,25,26,27,28, which ...
-'-0-0- HH Pt-B-PET / PHB-PHB DEG likely that the molecular weight of copolyes- ters strongly depends on LCP composition. NMR Study and Reaction To examine more closely the mechanism of molecular weight change of copolyesters prepared, NMR spectra of the copolyesters were compared with ...
Surface Elemental Composition Apart from C and N, the elemental composition of the particle surface layer reflected the granitic composition with quartz, feldspars, and micas as main components25. Beside O as the most abundant element, Na, Fe, N, K, Ca, C, Si, Mg, and Al could be ident...
(DART-MS) can be used as a rapid fingerprinting method to screen microplastic additives. The complex mixture of polymer degradation products (i.e., “chemical fingerprints” of environmental microplastics) resulted from thermal desorption and pyrolysis can reflect the composition of both the polymers...
Chemical Composition Diglycidyl ether of Bisphenol-A Application Thermosetting powder coatings, anti-corrosion coatings, etc., are widely used in chemical protection, electrical and electronic equipment, civil engineering and machinery manufacturing and other fi...
6. A fast crystallizing polyester composition characterized in that it contains a polyester prepared by the method of claim 4 and an acidic compound selected from a weak acid or corresponding anhydride, a salt of a weak acid or a salt of strong acid. ...