Process for reprocessing atactic polypropylene

Details Process for reprocessing atactic polypropylene Process for reprocessing atactic polypropylene

1976-03-17

1978-08-01

De Benedictis, Sr., Thomas

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

528490, 528491, C08F 600

Patent

active

041042069

ABSTRACT:
A plastic by-product can be reprocessed by embrittling the plastic by-product at a low temperature, crushing the embrittled by-product to about the same particle size as that of the virgin plastic, adding fine powder of the same or other material to the thus crushed by-product in order that the fine powder is deposited onto the surface of the crushed by-product, and then raising the temperature of the by-product to room temperature. The thus obtained reprocessed material can effectively be utilized as a bulking filler for the virgin plastic or for the other uses.

REFERENCES:
patent: 3027271 (1962-03-01), Plasse et al.
patent: 3210301 (1965-10-01), White
patent: 3311601 (1967-03-01), Conley
patent: 3331729 (1967-07-01), Danielson et al.
patent: 3386488 (1968-06-01), Ratzsch et al.
patent: 3489710 (1970-01-01), Bonotto et al.
patent: 3554835 (1971-01-01), Morgan
patent: 3634385 (1972-01-01), Walles et al.
patent: 3634570 (1972-01-01), Himebreich, Jr. et al.
patent: 3640912 (1972-02-01), Reinhard

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