Research of possible synthesis of alkyd-styrene resins in belarus

The article covers possible methods of synthesis of alkyd-styrene resins, formulations and areas of application this film-formers in paint production. The article summarises the main regularities that can can help to get in the future alkyd-styrene resins of home production. Possibility of production alkydstyrene resins at the chemical companies Republic of Belarus opens wide prospects for creation quick and naturally drying paint materials which will reduce the dependence on imports for Belarusian companies, provide energy savings and correspondingly increase the competitive ability of products of companies by cheapening of coatings preparation processes

Improved scheme for integrated processing ofpine resin pinus Silvestris l.

The review is devoted to the results of many years of work in the field of modification of terepenthene, rosin and turpentine. The article provides the advanced scheme of complex processing of the original materials. The last year’s successes in producing the latest products from rosin are reached. The article shows depending on applied raw materials and conditions can produce composite structures with a wide range of physics-mechanical and operational properties

Use of epoxies in the thermocured compositions (review)

The thermocured compositions have found broad application in the electrotechnic industry: coverings copper mouting wires (enamel wires), printed circuit boards, electrotechnic contacts, and also in filling compounds (used in transformers), etc. Compoundings, ways of receiving of thermosetting com-positions received with use of epoxies, and also application and properties of the received varnishes on their basis are given in this review

Application features of new pigments in alkyd anticorrosive primers

Article is devoted to valuation the possibility of using new synthesized compounds as anticorrosive pigments in natural drying alkyd primers. Technical and physical properties of new pigments based on transition metal compounds of different nature (oxides, phosphates, car-bides, complex compounds) and phosphorus-containing pigments was investigated, new reci-pes of primers was designed, physical, mechanical and protective properties of coatings was investigated. Dependence of the anticorrosive properties of the synthesized pigments, primers and coatings was established from their chemical nature

Preparation and study of physicochemical properties of modified rosins and model compounds based on them

Results of research of the modeling structures received with use of modified rosin are given in the article. It is shown that depending on the applied modifiers of rosin and conditions it is possible to make modeling structures with a wide range of physical-mechanical and operational properties. The use of modified rosin in model compositions opens up wide prospects for the development and production of new model compositions at the chemical plants of Belarus

Humus content in a podzolized chernozem after a long-term application of fertilizers in a field crop rotation

ArticleThe article presents the results of the research into influence of a long - term (50 years) application of different fertilizer rates and fertilizer systems in the field crop rotation on the humus composition and optical parameters of humic acids of a heavy - loamy podzolized chernozem of the Right Bank Forest - Steppe of Ukra ine. It was found that application of fertilizers significantly affects the dominance of humic acids over fulvic acids in the composition of soil, which indicates humate type of soil. Chroma index of humic acids is within 3.56 – 3.75 depending on a fertilize r. Indicators of the optical properties of humic acids of a podzolized chernozem have a high degree of humification

Research of modified rosin usability in model compositions for precision molding

The research result of the modified rosin as a component of model compositions for precision cast-ing is given in the article. The last five years successes in producing the latest products from rosin are reached. New rosin products essentially differ from rosin by physi cal and chemical properties possess certain advantages enable to expand the sphere of introduction and level rosin shortcomings. Therefore development and research of new model compositions for precision casting taking into account the achievements in the field of secondary rosin product synthesis is an actual task and promotes decelerat-ing elimination in this area from foreign analogues

Antiseptics on the basis of terpenoid compounds: synthesis, properties and application

Currently, chemical methods of pest bio deterioration of materials, products and constructions are the main complex of destructive actions. In particularwood preservative very effective way to save forest resources for the longest time protects. In developed countries, the use of antiseptics reached industrial scale. The search of effective forms of applyingantiseptics and rational use of them continue to be relevant tasks. The review is devoted to the methods of antiseptics on the basis of the terpenoid compounds. It is given broad spectrum biocide properties of antiseptics and use of anti-septic funds in protective compositions and coatings for various purposes

Waste rubber industries – perspective material to make new products

The article deals with the research of possibility ofutilization of rubber industry wastes – rubber crumb, in elastomeric compositions. Influence of size of crumb on properties of composition material is studied. It is in process shown that dispersion of rubber crumb has influence on properties of rubber products. It is established that for making of elastomeric composition material it is expedient to use the crumb of 0.5–1.0 mm fraction , as application of crumb of more shallow fraction increases the prime price of the received wares, and the use of large particles makes the results of physical mechanical parameters. worse