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.:
Date of Patent:
Jul. 09, 2019
Filed:
Mar. 31, 2017
Kaneka Belgium N.v., Westerlo-Oevel, BE;
Kaneka Corporation, Osaka, JP;
Pierre Van Ravestyn, Geel, BE;
Nancy Laeveren, Laakdal, BE;
Kaneka Belgium N.V., Westerlo-Oevel, BE;
KANEKA CORPORATION, Osaka, JP;
Abstract
A polyolefin-based resin pre-expanded particle includes a polyolefin-based resin; an organic phosphorus-containing compound being nitrogen-free; and a hindered amine having an OR group substituted directly on an N-atom where R is a saturated or unsaturated hydrocarbyl group, wherein the organic phosphorus-containing compound is at least one selected from the group consisting of alkyl phosphonic acid, an ester of the alkyl phosphonic acid, aryl phosphonic acid, an ester of the aryl phosphonic acid, a cyclic phosphonate, and a cyclic bisphosphonate, the polyolefin-based resin pre-expanded particle comprises from 1.0% by weight to 10% by weight of the organic phosphorus-containing compound and from 0.1% by weight to 5.0% by weight of the hindered amine, and the weight ratio of the organic phosphorus-containing compound to the hindered amine is from 1.0 to 20.