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US3962246A Expired / Lapsed US ⏱️ 0.0 years remaining

Bromo-propanol derivatives as flame retardants

Assignee: Sandoz AG
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Filing: 1974-07-19
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Granted: 1976-06-08
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Expires: 1994-07-19
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Abstract

Abstract The present invention concerns a novel method of flame-proofing flammable material which comprises treating said material with a compound of the formula: ##EQU1## WHEREIN N IS 1 OR 2, AND R, when n is 1, is a radical of the formula ##EQU2## wherein R 1 and R 2 are substituents e.g. alkyl, or R 1 and R 2 , together with the nitrogen atom, form a heterocyclic ring or R, when n is 2, is a radical of the formula ##EQU3## wherein R 1 and R 4 are substituents e.g. alkyl and R 3 is a hydrocarbon bridge e.g. alkylene, or R 1 , R 2 and R 4 , together with the nitrogen atoms to which they are bound, form a heterocyclic ring, or a group of the formula ##SPC1## Wherein m is 1 to 5, and novel compounds (i.e. when n is 2) useful as flame-proofing agents.

Inventors

  • 👤 Peter Borer
  • 👤 Hans-Werner Finck
  • 👤 Horst Mayerhoefer
  • 👤 Urs Sollberger
  • 👤 Wolfgang Heinz Mueller

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 13:33
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/0008; C08K5/0066

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 6 words
A compound of the formula: ##EQU27##
Claim 2
Dependent Claim 6 words
A compound of the formula: ##EQU27##

References Cited (Backward Citations)

FR1821M Cited
DE1595474A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1979-06-08 1979-12-08 1980-06-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1983-06-08 1983-12-08 1984-06-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1987-06-08 1987-12-08 1988-06-08 $7700.00 Window Closed / Lapsed

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