Rubber process oil and production process thereof

Details Rubber process oil and production process thereof Rubber process oil and production process thereof

2005-04-12

2005-04-12

Griffin, Walter D. (Department: 1764)

Mineral oils: processes and products

Products and compositions

C208S041000, C208S045000, C208S309000, C208S311000, C585S001000, C585S241000, C585S013000

Reexamination Certificate

active

06878263

ABSTRACT:
Disclosed is a rubber process oil in which the content of polycyclic aromatics (PCAs) as determined by the IP 346 method is less than 3% by mass and which is rich in aromatic hydrocarbons, and a method for producing the same. The aniline point of the rubber process oil is 80° C. or less, and the % CAvalue as determined by ring analysis according to the Kurtz method is from 20 to 50%. The rubber process oil is produced by using extraction of lube oil fraction with a solvent having a selective affinity for aromatics. The extraction conditions are determined so that the extraction yield is regulated to a predetermined requirement defined by the PCAs content of the lube oil fraction. Alternatively, the extract is cooled to further separate into the extract and the raffinate, and the second raffinate is used for the rubber process oil.

REFERENCES:
patent: 4892644 (1990-01-01), Choi et al.
patent: 5504135 (1996-04-01), Ardrizzi et al.
patent: 5840175 (1998-11-01), Aldous et al.
patent: 5846405 (1998-12-01), Aldous et al.
patent: 6024864 (2000-02-01), Aldous et al.
patent: 6103808 (2000-08-01), Hashimoto
patent: 0417980 (1991-03-01), None
patent: 0430444 (1991-06-01), None
patent: 0489371 (1992-06-01), None
patent: 0933418 (1999-04-01), None
patent: 2689575 (1993-07-01), None
Kurtz et al.Anal. Chem., vol. 30, pp. 1224 (1958).
Japanese Treatise, “Fuel Analysis Test Methods”; 1stEdition Nankodol, pp. 474-478 (1968).
Wommelsdorff et al. Ein Betrag Zur Reduzierung Der Polyzyklischen Aromaten Aus Aromatuschen Mineraloelweichmache Kautschuk Und Gumm—Kunstoffe, De Dr. Alfred Huthig Verlag GMBH. Heidelberg. vol. 45, No. 1, pp. 24-29 with English translation.

Affiliated with

Also associated with

Rating

Rubber process oil and production process thereof does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Rubber process oil and production process thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rubber process oil and production process thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3407583