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:
Jan. 15, 2002
Filed:
Aug. 08, 2000
Takashi Kobayashi, Kamisu-machi, JP;
Fumiaki Adachi, Kamisu-machi, JP;
Fujio Sato, Hasaki-machi, JP;
Tadashi Amano, Kamisu-machi, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
A process for regenerating unreacted vinyl chloride monomers is provided which has the step of compressing by means of an compressor an unreacted vinyl chloride monomer recovered from a process of vinyl chloride polymer production; compressing the same in contact with a lubricating oil fed into the compressor. In this process, the lubricating oil contains a polymerization inhibitor. Hence, even when this lubricating oil is circulated and reused as a lubricating oil after its separation from the unreacted vinyl chloride monomer, any vinyl chloride monomer remaining in the lubricating oil can effectively be kept from polymerizing in lubricating-oil circulation lines.