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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 4365057 B1

PDFFull Text
Date of Patent:
Dec. 21, 1982

Filed:

Mar. 27, 1979

Method for drying polyolefins

Applicant:
Inventors:

Shinichi Saito, Ichihara, JP;

Kazuo Aikawa, Ichihara, JP;

Michio Orino, Ichihara, JP;

Kazuya Aoi, Ichihara, JP;

Hideo Kusakabe, Ichihara, JP;

Assignee:

Sumitomo Chemical Company, Limited, Osaka, JP;

Attorney:

Birch, Stewart, Kolasch & Birch

Primary Examiner:

C A Henderson

Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
528503 ; 528480 ; 528502 ;
Abstract

Method for drying poly(.alpha.-olefins) comprising contacting poly(.alpha.-olefins) having a content of hydrocarbon medium of 0.2 to 2% by weight with nitrogen gas having substantially no hydrocarbon medium and having a dew point of -10.degree. C. or lower in counterflow in a silo type through-flow drying apparatus whereby poly(.alpha.-olefins) having a content of the hydrocarbon medium of less than 0.2% by weight can be obtained.

Find Patent Forward Citations

Saito, Shinichi. (1982). Method for drying polyolefins (U.S. Patent No. 4365057). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4365057

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