Process for regeneration of recycled polyvinylchloride

C - Chemistry – Metallurgy – 08 – J

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C08J 11/02 (2006.01) C08G 81/02 (2006.01) C08J 11/06 (2006.01) C08L 27/22 (2006.01)

Patent

CA 2199540

A process for reclamation of recycled polyvinylchloride comprises plasticization of recycled polyvinylchloride preliminarily washed of dirt and disintegrated, under constant stirring at a temperature of 60 - 80°C, using a plasticizer containing not more than 11 wt.% of polyorganosiloxane, followed by modification of recycled polyvinylchloride at a temperature of 60 - 80°C with a 4 - 12% solution of a structure-forming agent in stearin, whereupon the resultant modified polyvinylchloride is granulated at a temperature of 150 - 170°C.

Méthode pour la régénération de poly(chlorure de vinyle) recyclé, consistant à plastifier ledit poly(chlorure de vinyle) recyclé, lavé préalablement et désintégré, avec brassage constant à une température de 60-80 °C et en présence d'un plastifiant ne renfermant pas plus de 11 % en poids de polyorganosiloxane, suivi d'un procédé de modification dudit poly(chlorure de vinyle) recyclé, à une température de 60-80 °C à l'aide d'une solution à 4-12 % d'un agent structurant dans la stéarine avec, comme résultat, la granulation à une température de 150-170 °C du poly(chlorure de vinyle) modifié.

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