DOC

UKRAINE

By Wayne Griffin,2014-09-18 23:36
7 views 0
UKRAINEUKRA

UKRAINE

    Ministry of Education and Science of Ukraine

    The State Department of Intellectual Property

    Specification Applied For the Patent For an Invention

    The polyol making process for further production of foamed polyurethane Turchenko Dmitro Kuzmich, Onoprienko Oleksamdr Leonidovich

    Turchenko Dmitro Kuz‟mich

    There is a polyol making process for further production of foamed polyurethane that includes a sequential sorting, washing, drying and crushing of the wastes of polyethyleneterephthalate, foamed polyurethane and oils. The crushed wastes are exposed to a chemical process of glycolysis with the glycols present at the temperature and pressure appropriate for the process. As the result of this process, the product in the form of polyols having different molecular masses is obtained for the further production of foamed polyurethanes. As this takes place, on receiving the finished product an analysis of physicochemical properties of the produced polyols is made. This analysis is distinguished by the fact that in addition, depending on the formulation, the alleged polyols are optionally supplied to the mixing reactor. The obtained polyols are mixed in the mixing reactor with the additives appropriate for the process. The result of mixing of polyols with the additives is a product in the form of a polyol component for further production of foamed polyurethane. As this takes place, after an analysis of physicochemical properties of the obtained product in the form of a polyol component the alleged product in the form of a polyol component is pumped over from the mixing reactor to the storage and transportation tanks.

    The invention refers to a field of producing chemical products, namely, to production processes concerning processing polymer wastes into finished valuable chemical raw material, that is, to the processing method of the wastes of polyethyleneterephthalate, foamed polyurethane and oils to obtain raw material for foamed polyurethane production.

    There is a known polyol making process for producing foamed polyurethane. It deals with the wastes of polyethyleneterephthalate or foamed polyurethane which are subjected to sequential sorting, washing, drying and crushing. These crushed wastes mentioned above are exposed to a chemical process of glycolysis with the glycols present at the temperature and pressure appropriate for the process. As the result of this process, the product in the form of polyols having different molecular masses is obtained for the further production of foamed polyurethanes [1].

    This polyol making process for producing foamed polyurethane has the following disadvantages: the equipment used for the process does not allow receiving a product from which it could be possible to directly obtain the raw material or components for producing foamed polyurethane.

    The most appropriate process solution chosen to serve as a primary standard is a polyol making process for further production of foamed polyurethane when the wastes of polyethyleneterephthalate, foamed polyurethane and oils are sequentially sorted, washed, dried and crushed. These crushed wastes mentioned above are exposed to a chemical process of glycolysis with the glycols present at the temperature and pressure appropriate for the process. As the result of this process, the product in the form of polyols having different molecular masses is obtained for the further production of foamed polyurethanes. As this takes place, on receiving the finished product an analysis of physicochemical properties of the produced polyols is made [2].

    This polyol making process for producing foamed polyurethane has the following disadvantages: the equipment used for the process does not allow receiving a product from which it could be possible to directly obtain the raw material or components for producing foamed polyurethane.

    The task of securing production potentialities for obtaining the product for producing a wide range of foamed polyurethane produce by means of avoiding the disadvantages of the primary standard is assumed as a basis for the invention.

    The main point of the invention of a polyol making process for further production of foamed polyurethane is the following: the wastes of

    polyethyleneterephthalate, foamed polyurethane and oils are sequentially sorted, washed, dried and crushed. These crushed wastes mentioned above are exposed to a chemical process of glycolysis with the glycols present at the temperature and pressure appropriate for the process. As the result of this process, the product in the form of polyols having different molecular masses is obtained for the further production of foamed polyurethanes. As this takes place, on receiving the finished product an analysis of physicochemical properties of the produced polyols is made. The main point of the invention is that in addition, depending on the formulation, the alleged polyols are optionally supplied to the mixing reactor. The obtained polyols are mixed in the mixing reactor with the additives appropriate for the process. The result of mixing of polyols with the additives is a product in the form of a polyol component for further production of foamed polyurethane. The point of the invention is also that after an analysis of physicochemical properties of the obtained product in the form of a polyol component the alleged product in the form of a polyol component is pumped over from the mixing reactor to the storage and transportation tanks.

    The comparative analysis of the alleged process solution with the primary standard makes it possible to conclude that the alleged polyol making process for producing foamed polyurethane is distinguished by the fact that in addition, depending on the formulation, the alleged polyols are optionally supplied to the mixing reactor. The obtained polyols are mixed in the mixing reactor with the additives appropriate for the process. The result of mixing of polyols with the additives is a product in the form of a polyol component for further production of foamed polyurethane. As this takes place, after an analysis of physicochemical properties of the obtained product in the form of a polyol component the alleged product in the form of a polyol component is pumped over from the mixing reactor to the storage and transportation tanks.

    Thus, the alleged polyol making process for producing foamed polyurethane meets the “new” requirement of the invention.

    The main point of the invention is explained by means of a chart where the production operations are shown. These production operations explain the essence of the alleged polyol making process for producing foamed polyurethane.

    According to the chart, the main point of the polyol making process is explained by means of production operations.

    Before that, the wastes of polyethyleneterephthalate, foamed polyurethane and oils are sorted by a soiling degree and some outside materials are being extracted. Next, the sorted wastes are sequentially washed and dried. The cleaned wastes are crushed and supplied to the glycolysis reactor. The macromolecules of polymers (as part of polymers) are split into lower molecular products with finite hydroxylic groups - polyols with different molecular masses in the glycolysis reactor at the temperature and pressure (at the presence of the glycol added). This product is analyzed and the formulation of its usage is determined on the basis of the data received (physicochemical properties). In correspondence with the chosen formulation, the polyol produced is charged into the mixing reactor. As this takes place, the necessary additives, for example catalysts, stabilizers, fire-retardants and other ingredients are added to the mixing reactor. These ingredients are mixed according to the process (temperature, rotations per minute of the mixer, mixing time). As the result of the process the product in the form of a polyol component is produced that is pumped over into the storage and transportation tanks after the laboratory analyses has been fulfilled. The given polyol component can be used for the further production of appropriate foamed polyurethanes by means of the known production operations.

    The efficiency upgrading of the alleged polyol making process for producing foamed polyurethane as compared with the primary standard is achieved by the fact that the process being the basis of the method help receive the product for producing a wide range of foamed polyurethane products. In addition, the efficiency upgrading of the alleged method is achieved by the fact that the

    equipment used for applying the method help process a variety of wastes, namely, those of polyethyleneterephthalate, foamed polyurethane and oils.

    Source of Information

    1. The Groupe TBI (Techniques Batiment Industrie) firm pamphlet,

    France analogue .

    2. The REGRA firm pamphlet, KunststoffechniK Gmb, Germany

    prototype.

    3. „The foamed polyurethane based composite material” edited by G.

    M. Buist. Translated by V.D. Alpern and G.A> Gladkovskiy.

    Edited by F.A. Shutov. M.: Chemistry, 1982, 240 p.

Report this document

For any questions or suggestions please email
cust-service@docsford.com