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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.:

US 8864981 B1

PDFFull Text
Date of Patent:
Oct. 21, 2014

Filed:

Jan. 14, 2011

Feed mixtures for extraction process to produce rubber processing oil

Applicants:

Chih-cheng Chang, Chia-Yi, TW;

Jung-huang Wu, Kaohsiung, TW;

Cheng-tsung Hong, Tainan, TW;

Jin-shang Liou, Chia-Yi, TW;

Kuo-min Wei, Chia-Yi, TW;

Hung-chung Shen, Chia-Yi, TW;

Fu-ming Lee, Katy, TX (US);

Inventors:

Chih-Cheng Chang, Chia-Yi, TW;

Jung-Huang Wu, Kaohsiung, TW;

Cheng-Tsung Hong, Tainan, TW;

Jin-Shang Liou, Chia-Yi, TW;

Kuo-Min Wei, Chia-Yi, TW;

Hung-Chung Shen, Chia-Yi, TW;

Fu-Ming Lee, Katy, TX (US);

Assignee:

CPC Corporation, Taiwan, Taipei, TW;

Attorney:

Cascio & Zervas

Primary Examiner:

Michelle Stein

Int. Cl.
CPC ...
C10G 17/04 (2006.01); C10G 53/00 (2006.01); C10G 21/00 (2006.01); C10G 21/27 (2006.01); C10G 21/22 (2006.01); C10G 21/16 (2006.01); C10G 21/20 (2006.01);
U.S. Cl.
CPC ...
C10G 21/16 (2013.01); C10G 53/00 (2013.01); C10G 2300/302 (2013.01); C10G 2300/1062 (2013.01); C10G 21/003 (2013.01); C10G 2400/30 (2013.01); C10G 2300/44 (2013.01); C10G 21/27 (2013.01); C10G 21/22 (2013.01); C10G 2300/1074 (2013.01); C10G 21/20 (2013.01); C10G 2300/30 (2013.01);
Abstract

Deasphalted residual oil (DAO) and the aromatics-rich extract that is derived from DAO have low polycyclic aromatics contents, relatively low aniline points, and high flash points. They form blending stocks that improve properties of mixed feedstocks to consistently produce environmentally qualified rubber processing oil (RPO) by extraction under low solvent-to-oil ratios and moderate extraction temperatures. Distilling a petroleum crude oil under atmospheric pressure generates a bottom residual oil which is then subject to vacuum distillation to yield a bottom residual oil. DAO is produced by removing the asphalt from the vacuum bottom residual oil through extraction with light paraffinic solvent. The extract of DAO is a co-product in the production of the bright stock of the lubricating oil through extraction. The feedstock is mixed with the extract from a petroleum fraction boiling in lube oil range. Liquid-liquid counter-current extraction yields a raffinate stream; removal of solvent therefrom produces the RPO.

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