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:
Feb. 22, 2005
Filed:
May. 24, 2001
Yutaka Kinose, Tokyo, JP;
Ryohei Imamura, Tokyo, JP;
Akinori Inoue, Tokyo, JP;
Toru Hata, Tokyo, JP;
Eriko Okuno, Tokyo, JP;
Yutaka Kinose, Tokyo, JP;
Ryohei Imamura, Tokyo, JP;
Akinori Inoue, Tokyo, JP;
Toru Hata, Tokyo, JP;
Eriko Okuno, Tokyo, JP;
Nippon Chemical Industrial Co., LTD, Tokyo, JP;
Abstract
The red phosphorus base flame retardant for an epoxy resin is provided, which has red phosphorus particles coated with a thermosetting resin containing an anhydrous zinc compound. The coated red phosphorus has properties that a slurry having the coated red phosphorus dispersed in 10% by weight into water at 20° C. has an electric conductivity of 30 μs/cm or below, the slurry having been left standing at 80° C. for 20 hours has an electric conductivity of 150 μs/cm or below, and when 80 ml of water is added to 8 g of the coated red phosphorus and heated at 80° C. for 20 hours, a concentration of POions eluted is 10 ppm or below.