PN-9 pitch

Polyester resinss are the special materials received as a result of polycondensation between unsaturated dicarboxylic acids and certain alcohols. At the same time production of polyester resinss can be carried out on basis, both polyatomic, and unsaturated alcohols. Everything depends on what properties ready polyester resinss have to possess.
Polyester resinss happen saturated and unsaturated. The greatest distribution was at the moment gained by unsaturated polyester resinss. First of all, unsaturated polyester resinss are characterized by the fact that they can harden at low temperature. And in the course of curing unsaturated polyester resinss do not emit harmful substances in the atmosphere.
Production of polyester resinss represents rather complex process interfaced to many problems. So that to arrange production of polyester resinss, it is necessary to equip workshop of which work the hi - tech modern equipment and use of advanced technologies of production has to be the cornerstone.
It is caused by the fact that polyester resinss are generally applied in those areas of the industry where are shown raised to requirements concerning quality of materials of production. For example, polyester resinss are used in such industrial spheres as shipbuilding, construction of residential or uninhabited buildings, production of cars today and so forth.
In most cases polyester resinss are applied as cementing materials at production of fibreglasses. Polyester resinss and for preparation of various paints and varnishes, production of haberdashery products, impregnation of steel metal castings and arrangement of bulk floors are used.
In general polyester resinss are rather universal material which range of application constantly extends. Constantly also the production technology of polyester resinss improves. It is explained by the fact that polyester resinss have to meet the growing requirements from consumers of this reliable and checked by time material.