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. 10, 2018
Filed:
Nov. 13, 2014
Kaneka Corporation, Osaka-shi, JP;
KANEKA CORPORATION, Osaka-shi, JP;
Abstract
Provided is an extruded polystyrene foam which is obtained by extrusion foaming using a polystyrene resin and a foaming agent, contains 0.5-8.0 parts by weight of a flame retardant based on 100 parts by weight of the polystyrene resin and has an apparent density of 20-45 kg/mand a closed cell ratio of 90% or more. The foaming agent contains HFO and an additional organic foaming agent. The amount of HFO is 0.030-0.125 mol/per 100 g of the polystyrene resin, polystyrene permeability of the additional organic foaming agent is 0.5×10cc·cm/cm·s·cmHg or more, an organic foaming agent having a polystyrene permeability of less than 0.5×10cc·cm/cm·s·cmHg is not included, and the total amount of HFO and the additional organic foaming agent is 0.105-0.300 mol/per 100 g of the polystyrene resin.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile