Bismaleimide compounds

Patent · 13 January 1986

OSTI ID:865740

Adams, Johnnie E ^[1]; Jamieson, Donald R ^[2]

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1. Grandview, MO
2. Merriam, KS

Bismaleimides of the formula ##STR1## wherein R.sub.1 and R.sub.2 each independently is H, C.sub.1-4 -alkyl, C.sub.1-4 -alkoxy, C1 or Br, or R.sub.1 and R.sub.2 together form a fused 6-membered hydrocarbon aromatic ring, with the proviso that R.sub.1 and R.sub.2 are not t-butyl or t-butoxy; X is O, S or Se; n is 1-3; and the alkylene bridging group, optionally, is substituted by 1-3 methyl groups or by fluorine, form polybismaleimide resins which have valuable physical properties. Uniquely, these compounds permit extended cure times, i.e., they remain fluid for a time sufficient to permit the formation of a homogeneous melt prior to curing.

• Research Organization: Kansas City Plant (KCP), Kansas City, MO (United States)
• DOE Contract Number: AC04-76DP00613
• Assignee: United States of America as Represented by United States (Washington, DC)
• Patent Number(s): US 4564683
• Application Number: 06/598,620
• OSTI ID: 865740
• Country of Publication: United States
• Language: English

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