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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 4219465 B1

PDFFull Text
Date of Patent:
Aug. 26, 1980

Filed:

Jun. 05, 1979

Piperidine-spiro-hydantoin derivatives and their use as polymer

Applicant:
Inventors:

Nobuo Soma, Hiromachi, JP;

Syoji Morimura, Hiromachi, JP;

Takao Yoshioka, Hiromachi, JP;

Tomoyuki Kurumada, Hiromachi, JP;

Assignee:

Sankyo Company Limited, Tokyo, JP;

Attorney:

Toren, McGeady and Stanger

Primary Examiner:

Hosea E Taylor

Assistant Examiner:

R A White

Int. Cl.
CPC ...
C07D / ; C08K / ;
U.S. Cl.
CPC ...
260 / ; 260 / ; 260 / ; 544207 ; 546 20 ;
Abstract

Novel piperidine-spiro-hydantoin derivatives represented by the general formula (I) and use thereof as light stabilizers for synthetic polymers are described: ##STR1## The compounds are distinguished by an improved stabilizing effect in various synthetic polymer compositions, such as polyolefins, against light- and/or heat-induced deterioration thereof, small volatility upon heat-processing or during storage of shaped articles containing the compounds, and resistance to extraction with water and solvents.

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Soma, Nobuo. (1980). Piperidine-spiro-hydantoin derivatives and their use as polymer (U.S. Patent No. 4219465). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4219465

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