Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Process of treating scrap or waste product containing solid...
Patent
1982-11-29
1985-03-19
Lieberman, Allan M.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Process of treating scrap or waste product containing solid...
521 455, 585241, 423449, C08J 1100, C08J 1102, C08J 1104
Patent
active
045060347
ABSTRACT:
A method is provided for the continuous processing of coarse-grained waste rubber into a secondary rubber raw material, in which coarse-grained waste rubber having a particle size of 0.5 to 15 mm, preferably approx. 4 to 6 mm, in a layer of a thickness not exceeding the largest dimension of a single grain is exposed to a thermoshock without the access of oxygen at a temperature of 200.degree. to 900.degree.C., preferably 600.degree. to 800.degree. C., for a time of 5 to 200 seconds, preferably about 30 to 60 seconds, depending on the size of the particles and the desired structure of the product.
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W. O. Murtland, "Current Trends in Scrap Rubber Recycling", Elastomerics, Jan. 1981, pp. 13, et seq.
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Swor, et al., "Ultrafine Recycled Rubber", Paper No. 53, presented at the 117th meeting, Rubber Division, A.C.S., Las Vegas, Nev., May 20-23, 1980.
Lieberman Allan M.
SAVA KRANJ industrija gumijevih, usnjenih in kemicnih izdelkov n
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