Bismaleimide compounds

Patent · Tue Jan 14 00:00:00 EST 1986

OSTI ID:7148000

Adams, J E; Jamieson, D R

Bismaleimides of the formula shown in the diagram wherein R[sub 1] and R[sub 2] each independently is H, C[sub 1-4]-alkyl, C[sub 1-4]-alkoxy, Cl 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.

• DOE Contract Number: AC04-76DP00613
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 4564683; A
• Application Number: PPN: US 6-598620
• OSTI ID: 7148000
• Resource Relation: Patent File Date: 10 Apr 1984
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
IMIDES
MOLECULAR STRUCTURE
RESINS
CURING
MALEIC ACID
CARBOXYLIC ACIDS
DICARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
400201* - Chemical & Physicochemical Properties