Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1991-02-21
1994-05-03
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
521 54, 521 55, 521 83, 521101, 1062731, 1062811, C08L 9500
Patent
active
053088980
ABSTRACT:
The invention relates to bituminous compositions obtained by the incorporation of thermoplastic polymer residues, particularly sterile car waste, containing polyurethane foams and thermoset resins, as well as their preparation process. The process consists of mixing previously ground polymer residues, so as to obtain an average particle size below 10 mm with melted asphalt or bitumen. The mixture is stirred at a temperature between 150.degree. and 300.degree. C., the presence of ground polyurethane foam and thermoset resin particles helping to increase the dissolving rate of the polymers. Preferably addition takes place of a catalyst and/or a reagent aiding a coupling reaction between the polymers and certain constituents of the bitumen or asphalt, which gives the final bituminous mixture improved properties. The bituminous compositions according to the invention can advantageously be used for coating solid materials.
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Encyclopedia of Polymer Science and Engineering, vol. 13, Poly(phenylene Ether) to Radical Polymerization, John Wiley & Sons, New York, pp. 264-274.
Institut Francais du Pe'trole
Kight III John
Sergent Rabon
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