Polyester Polyol and its Prepolymer to Produce Polyurethane

Product Introduction:

In general, polyurethanes refer to a group of chemicals that are produced by the condensation reaction of polyol and isocyanates (prepolymer) as the main constituents. Polyurethanes can be prepared according to the required hardness, and this variety depends on the raw materials (polyol and pre-polymer) and the production process used.

There is a very wide variety of these compounds in terms of mechanical properties, high chemical resistance, fast curing, high light resistance if needed, the ability to form foam, etc. These polymers are the result of step-growth polymerization reaction between di or polyisocyanates with di and polyols. This reaction can result in the formation of a crosslinked and thermosetting polymer, or a non-crosslinked and thermoplastic structure, which is a thermoset product.

Technical Specifications:

* Thermosetting polyurethanes are supplied in the form of two or three reactive components, which are mixed together in a certain ratio adjusted by the consumer and produce the final polyurethane product under the specified reaction conditions. The two main components are polyisocyanate and polyol, which are supplied in formulated form. In some cases, when there is a possibility of an adverse effect between the polyol and the catalyst during storage, the catalyst is provided separately and mostly as a third component. The company’s product is a polyurethane system consisting of three components: polyester polyol, isocyanate prepolymer and a set of additives (including catalyst, cross-linking agent, chain extender, surfactant and foaming agent).

* Types of linear and branched polyester polyols (different functional groups) with hydroxyl values of 28 to 500 mgKOH/g, molecular weight of 350 to 4000 and final acidity less than 0.5 mgKOH/g.

Advantages:

* High Quality

* Very high production volume

* Variety of consumer grades

* Possibility of customization