发明名称 |
Phosphorus-containing imide resins |
摘要 |
Cured polymers of bis- and tris-imides derived from tris(m-aminophenyl) phosphine oxides by reaction with maleic anhydride or its derivatives, and addition polymers of such imides, including a variant in which a mono-imide is condensed with a dianhydride and the product is treated with a further quantity of maleic anhydride prior to curing are disclosed and claimed. Such polymers are flame resistant. Also disclosed are an improved method of producing tris(m-aminophenyl) phosphine oxides from the nitro analogues by reduction with hydrazine hydrate using palladized charcoal or Raney nickel as the catalyst and fiber-reinforced cured resin composites.
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申请公布号 |
US4496701(A) |
申请公布日期 |
1985.01.29 |
申请号 |
US19830502820 |
申请日期 |
1983.06.09 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
发明人 |
VARMA, INDRA K.;FOHLEN, GEORGE M.;PARKER, JOHN A. |
分类号 |
C07F9/553;C08G73/12;C08L79/08;(IPC1-7):C08F20/70;C08F30/02 |
主分类号 |
C07F9/553 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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