Study by Differential Thermal Analysis and Thermogravimetric Analysis of the Heat Stability of Polyethylene Stabilised with Gossypol Derivatives

Abstract

Thermal analysis methods were used to investigate highdensity polyethylene (HDPE) stabilised with the addition of 0.5-1.0% antioxidant. Antioxidant was produced on the basis of gossypol with hexamethylenediamine (GHMDA) and with urea adduct (GUA).

Synthesis and analysis of a new high intensity phthalocyanine pigment containing nitrogen, sulfur and copper

“…Synthesis of phthalocyanine pigment containing copper, nitrogen and sulfur. Based on the conducted experiments, the amount and temperature of reactants obtained as initial products are of primary importance in obtaining highly productive copper-sulfur-retaining phthalocyanine pigments [16]. The ratio of initial reactants obtained and the effect of temperature on the yield of pigments for copper-sulfur phthalocyanine pigment are presented in Table 1.…”

“…However, such systems are even less studied (for the same reason). A number of phthalocyanine analogues are known that contain polycyclic aromatic hydrocarbon rings instead of benzene rings (for example, 2,3-naphthalocyanines, Nc 3), as well as heterocyclic fragments [13][14][15]; tetraazaporphyrins 4 (porphyrazines, Pz) [16], the tetrabenzo derivatives of which are phthalocyanines themselves; subphthalocyanines (SubPc, 5) [17] and superphthalocyanines (SPc, 6). When preparing metal complexes of phthalocyanines from acids, anhydrides or imides, a source of nitrogen atoms is needed to form phthalocyanine, usually urea.…”

Criteria for evaluating the laser resistance of crystals under thermoelastic deformation conditions

“…Currently 1 , advanced technologies 2 are being developed 3 in the world 4 , such as the production 5 of electrical and optical materials 6 based on solar cells and chemical sensors 7 . In this regard 8 , it becomes necessary to find and expand the scope of application of new materials capable of purposefully changing anticorrosive 9 , static and dynamic strength properties 10 .…”

Investigation of phthalocyanine diamidophosphate-nickel by thermal analysis

“…An important advantage of phthalocyanine pigments is their very low toxicity; they are used in the production of packaging materials for food products, children's toys, and medicines. Also, phthalocyanines and their derivatives play an important role in obtaining light and heat resistant dyes, which are characterized by high chemical resistance and color stability [1].…”