Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Treatment of untanned skins or hides
Patent
1987-08-04
1989-06-13
Lieberman, Paul
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Treatment of untanned skins or hides
8 9415, C14C 1300
Patent
active
048388920
ABSTRACT:
A novel thermoplastic composition of matter is produced by subjecting leather, especially particulate leather scrap optionally admixed with one or more additives and/or fillers, to the action of a pressure from about 200 to 900 bar, at a temperature from about 50.degree. to about 250.degree. C. in a closed die for a time of at least about 30 seconds.
REFERENCES:
patent: 1556623 (1925-10-01), Minor
patent: 3505169 (1970-04-01), Parker
Wagner Herbert J.
Wyler Adolf
Lieberman Paul
McNally John F.
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