Title:
METHOD FOR PRODUCING A PHOSPHORUS-CONTAINING EPOXY RESIN, EPOXY RESIN COMPOSITION, AND CURED PRODUCT THEREOF
Document Type and Number:
WIPO Patent Application WO/2011/096588
Kind Code:
A1
Abstract:
Provided is a method for producing a phosphorus-containing epoxy resin which produces a cured product that has excellent low viscosity properties and that is flame resistant. Also provided are an epoxy resin composition comprising the phosphorus-containing epoxy resin obtained by said production method, and a cured product of the epoxy resin composition. The production method comprises reacting an epoxy resin (A), which is formed from at least one of an epoxy resin (a1) represented by general formula (1), an epoxy resin (a2) represented by general formula (3) and an epoxy resin (a3) represented by general formula (4), with an organophosphorus compound (B), which comprises an organophosphorus compound (b1) represented by general formula (5) and/or an organophosphorus compound (b2) represented by general formula (6), to produce a phosphorus-containing epoxy resin having an epoxy equivalent of 200 to 600 g/eq and a phosphorus content of 1 to 6 wt%. The hydroxyl group concentration of the epoxy resin (A) is 200 mEq/100 g or less, the total chlorine content is 0.4 wt% or less, and the α-diol content is 10 meg/100 g or less. The weight ratio range of the organophosphorus compound (b1) / the organophosphorus compound (b2) of the organophosphorus compound (B) is 50/50 to 100/0.
Inventors:
GUNJI Masao (NIPPON STEEL CHEMICAL CO. LTD.,11-5, Kitasod, Sodegaura-shi Chiba 66, 〒2990266, JP)
軍司 雅男 (〒66 千葉県袖ヶ浦市北袖１１番地５ 新日鐵化学株式会社 エポキシ樹脂センター内 Chiba, 〒2990266, JP)
SATO Hiroshi (NIPPON STEEL CHEMICAL CO. LTD.,11-5, Kitasod, Sodegaura-shi Chiba 66, 〒2990266, JP)
軍司 雅男 (〒66 千葉県袖ヶ浦市北袖１１番地５ 新日鐵化学株式会社 エポキシ樹脂センター内 Chiba, 〒2990266, JP)
SATO Hiroshi (NIPPON STEEL CHEMICAL CO. LTD.,11-5, Kitasod, Sodegaura-shi Chiba 66, 〒2990266, JP)
Application Number:
JP2011/052680
Publication Date:
August 11, 2011
Filing Date:
February 02, 2011
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL CO., LTD. (14-1, Sotokanda 4-chome Chiyoda-ku, Tokyo 21, 〒1010021, JP)
新日鐵化学株式会社 (〒21 東京都千代田区外神田四丁目１４番１号 Tokyo, 〒1010021, JP)
GUNJI Masao (NIPPON STEEL CHEMICAL CO. LTD.,11-5, Kitasod, Sodegaura-shi Chiba 66, 〒2990266, JP)
軍司 雅男 (〒66 千葉県袖ヶ浦市北袖１１番地５ 新日鐵化学株式会社 エポキシ樹脂センター内 Chiba, 〒2990266, JP)
新日鐵化学株式会社 (〒21 東京都千代田区外神田四丁目１４番１号 Tokyo, 〒1010021, JP)
GUNJI Masao (NIPPON STEEL CHEMICAL CO. LTD.,11-5, Kitasod, Sodegaura-shi Chiba 66, 〒2990266, JP)
軍司 雅男 (〒66 千葉県袖ヶ浦市北袖１１番地５ 新日鐵化学株式会社 エポキシ樹脂センター内 Chiba, 〒2990266, JP)
International Classes:
C08G59/14
Attorney, Agent or Firm:
TANAKA Hiroshi et al. (Hougaku Bldg. 7F, 19-14 Toranomon 1-chome, Minato-ku, Tokyo 01, 〒1050001, JP)
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Claims: