Photopolymerizable composition and flame-retardant...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...

Reexamination Certificate

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C522S074000, C522S090000, C522S096000, C522S099000, C522S150000, C522S151000, C522S152000, C428S411100, C428S423100, C428S457000, C252S601000, C252S609000

Reexamination Certificate

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11195703

ABSTRACT:
The invention provides a photopolymerizable composition comprising: flame-retardant particles which contains a hydrated metal and have an average diameter of about 1 to 500 nm; and a photopolymerization reactive material. The hydrated metal preferably includes at least one selected from the group consisting of a hydrated magnesium, hydrated calcium, hydrated aluminum, hydrated zinc, hydrated barium, hydrated copper and hydrated nickel. A cover layer which comprises an organic compound or a polysilicone is preferably formed on surfaces of the flame-retardant particles. The invention provides a flame-retardant resin-formed article which is formed of the photopolymerized photopolymerizable composition. A flame retardancy of the article measured in accordance with the UL-94 test preferably scores HB or higher.

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Masayuki Ohkoshi, “Production of Novel Organic-Inorganic Nano Composite and Analysis of Its Flame-Retarding Characteristics.,” Doctoral Thesis, Kyoto Institute of Technology, No. kou-305, Feb. 18, 2004 (Kyoto, Japan) w/abstract.

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