Brominated tricyclic imide flame retardants

• US 3,917,642 A
• Filed: 05/11/1973
• Issued: 11/04/1975
• Est. Priority Date: 11/19/1971
• Status: Expired due to Term

• Current Assignee: Ethyl Corporation (Newmarket Corporation)
• Original Assignee: Anderson O. Dotson Jr, Jack Newcombe, Lionel T. Wolford
• Inventors: Wolford, Lionel T., Newcombe, Jack, Dotson, Anderson O. Jr.
• Primary Examiner(s): Daus, Donald G.
• Assistant Examiner(s): Berch, Mark L.
• Application Number:
  US05/359,283
• Time in Patent Office: 907 Days
• Field of Search: 260/326C
• US Class Current: 548/435
• CPC Class Codes: C07D 209/48 with oxygen atoms in positions 1 and 3, e.g. phthalimide
• CPC Class Codes: C07D 209/76 with oxygen atoms in positions 1 and 3
• CPC Class Codes: C08K 5/3417 condensed with carbocyclic rings
• CPC Class Codes: C09K 21/08 containing halogen
• CPC Class Codes: Y10S 260/24 Flameproof

Abstract

Novel compounds, useful as flame retardants for normally flammable organic polymers, correspond to the formula:

WHEREIN Q is methylene or oxygen, R is hydrogen or an alkyl group containing 1-5 carbons, R'"'"''"'"' is hydrogen or methyl, R'"'"''"'"''"'"''"'"' is an organic group containing 1-15 carbons, and n is 0 or 1. These compounds may be prepared by synthesizing the corresponding unbrominated bisimides and subsequently brominating them.

Claims

1. A COMPOUND CORRESPONDING TO THE FORMULA.

2. The compound of claim 1 corresponding to the formula:

3. The compound of claim 1 corresponding to the formula:

4. The compound of claim 1 corresponding to the formula:

5. The compound of claim 1 corresponding to the formula:

6. The compound of claim 1 corresponding to the formula: