Process for solidification of phosphoric ester-based flame retardants

US8968611B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-8968611-B2
Application numberUS-99688608-A
CountryUS
Kind codeB2
Filing dateJun 9, 2008
Priority dateJun 9, 2008
Publication dateMar 3, 2015
Grant dateMar 3, 2015

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  1. Title

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  2. Abstract

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  5. First independent claim

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Abstract

Official abstract text for this publication.

The present invention provides a process of solidifying a phosphoric ester-based flame retardant in which high-level purification is not required and stress load is not employed. In the process of solidifying a phosphoric ester-based flame retardant, a seed crystal is added at a temperature of not higher than 55° C. and at an amount of 1 to 50 parts by mass with respect to 100 parts by mass of a phosphoric ester compound in a molten state, which compound is represented by the following Formula (I): (wherein, R 1 and R 2 each independently represent a hydrogen atom or a methyl group; and n represents a number of 1 to 5). It is preferred that the amount of the phosphoric ester compound represented by the aforementioned Formula (I) wherein n is 1 be less than 90% by mass and that R 1 and R 2 be a hydrogen atom.

First claim

Opening claim text (preview).

The invention claimed is: 1. A process of solidifying a phosphoric ester-based flame retardant, wherein a seed crystal is added at a temperature of not higher than 50° C. and at an amount of 1 to 50 parts by mass with respect to 100 parts by mass of a phosphoric ester compound in a molten state, said compound being the same compound as said seed crystal represented by the following Formula (I):…

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Classifications

  • Operations & Transport · mapped topic

  • Chemistry & Metallurgy · mapped topic

  • Chemistry & Metallurgy · mapped topic

  • C09K21/12Primary

    Chemistry & Metallurgy · mapped topic

  • Chemistry & Metallurgy · mapped topic

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What does patent US8968611B2 cover?
The present invention provides a process of solidifying a phosphoric ester-based flame retardant in which high-level purification is not required and stress load is not employed. In the process of solidifying a phosphoric ester-based flame retardant, a seed crystal is added at a temperature of not higher than 55° C. and at an amount of 1 to 50 parts by mass with respect to 100 parts by ma…
Who is the assignee on this patent?
Kamimoto Tetsuo, Tanaka Yuki, Tezuka Tomomasa, and 2 more
What technology area does this patent fall under?
Primary CPC classification C09K21/12. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Tue Mar 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).