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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 4894425 B1

PDFFull Text
Date of Patent:
Jan. 16, 1990

Filed:

May. 29, 1987

Preparation of polyisoprene having high content of 1,2- and

Applicant:
Inventors:

Walter Hellermann, Dorsten, DE;

Karl-Heinz Nordsiek, Marl, DE;

Jurgen Wolpers, Haltern, DE;

Assignee:

Huels Aktiengesellschaft, Marl, DE;

Attorney:

Millen, White & Zelano

Primary Examiner:

Joseph L Schofer

Assistant Examiner:

F M Teskin

Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526181 ; 526173 ; 526209 ; 5263402 ; 525244 ; 525250 ; 5253331 ; 525342 ; 525371 ; 525914 ;
Abstract

Polyisoprenes having a high content of 1,2- and 3,4-structural units, a process for their preparation, and their use. The previous processes for the preparation of polyisoprene having a high content of 1,2- and 3,4-structural units were still unsatisfactory in terms of the cocatalyst employed. The use of ethylene glycol dialkyl ethers of the formula

Find Patent Forward Citations

Hellermann, Walter. (1990). Preparation of polyisoprene having high content of 1,2- and (U.S. Patent No. 4894425). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4894425

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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