The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 1976
Filed:
Mar. 24, 1975
Masafumi Nakamura, Nobeoka, JA;
Tadahiro Fujii, Nobeoka, JA;
Hiromi Nagashima, Nobeoka, JA;
Hiroshi Henmi, Nobeoka, JA;
Asahi Kasei Kogyo Kabushiki Kaisha, Osaka, JA;
Abstract
A method of providing a fibrous thermoplastic resin for depolymerization thereof wherein the fibrous thermoplastic resin is formed into a shaped article having a specific gravity of at least 1/2 of the true specific gravity of the fibrous thermoplastic resin, said shaped article consisting of the fibrous thermoplastic resin mass having on its surface a crusty thin resin layer which may be press-bonded or melt-bonded to the mass. The thus provided shaped article of the fibrous thermoplastic resin can be advantageously employed as a starting material for the depolymerization reaction. In accordance with this invention, the time required for completion of the depolymerization can be greatly shortened as compared with that of the conventional technique and the rate and efficiency of the depolymerization can be greatly improved. Further, according to this invention, fibrous thermoplastic resins can be depolymerized effectively on an industrial scale while automatically conducting unit-operations such as storing, transportation, weighing, and charging into a reaction vessel in much simplified manners.