US4170711A
Expired / Lapsed
US
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Brominated biphenol derivatives
Assignee: General Electric Co
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Filing: 1976-09-27
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Granted: 1979-10-09
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Expires: 1996-09-27
Abstract
Abstract Monomeric and polymeric halogenated organic compounds derived from 2,2',6,6'-tetrabromo-3,3',5,5' -tetraalkyl-4,4'-biphenols are described. The derivatives are useful in their monomeric and polymeric form as flame retardant additives and/or concentrates for normally flammable resinous materials. The thermal stability at elevated temperatures of the brominated biphenol derivatives advantageously benefits polymeric compositions containing the brominated biphenol derivatives especially when the polymeric compositions are molded into three dimensional articles, or formed into films, sheeting or shaped into fibers, laminates or reinforced plastics by conventional techniques.
Inventors
- 👤 Charles M. Orlando
- 👤 Francois A. Lavallee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:57
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/23; C07C43/03; C07C43/14; C07C43/17; C07C43/174; C07C43/176; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/24; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3802; C08G18/3804; C08G18/3806; C08G18/381; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/30; C08G63/00; C08G63/68; C08G63/682; C08G63/6824; C08G63/6826; C08G64/00; C08G64/04; C08G64/06; C08G64/08; C08G64/10; C08G79/00; C08G79/02; C08G79/04; Y; Y10; Y10S; Y10S260/00; Y10S260/24
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
130 words
A brominated biphenol selected from monomeric halogenated organo compounds of the formula ##STR19## wherein independently each R is selected from primary alkyl groups, each R 1 is selected from hydrogen or groups identified hereafter in (a) and (b), subject to the proviso that at least one R 1 is selected from the group consisting of (a) R 2 -- ##STR20## wherein R 2 is selected from the group consisting of alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl and mixtures thereof, R 3 is selected from the group consisting of alkylene, cycloalkylene, arylene and mixtures thereof, R 4 is selected from the group consisting of hydrogen, alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl and mixtures thereof, x is a positive integer of at least 1, and y is a positive integer of at least 1.
Claim 2
Dependent Claim
130 words
A brominated biphenol selected from monomeric halogenated organo compounds of the formula ##STR19## wherein independently each R is selected from primary alkyl groups, each R 1 is selected from hydrogen or groups identified hereafter in (a) and (b), subject to the proviso that at least one R 1 is selected from the group consisting of (a) R 2 -- ##STR20## wherein R 2 is selected from the group consisting of alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl and mixtures thereof, R 3 is selected from the group consisting of alkylene, cycloalkylene, arylene and mixtures thereof, R 4 is selected from the group consisting of hydrogen, alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl and mixtures thereof, x is a positive integer of at least 1, and y is a positive integer of at least 1.
Claim 3
Dependent Claim
12 words
A brominated biphenol in accordance with claim 1 of the formula ##STR21##
Claim 4
Dependent Claim
12 words
A brominated biphenol in accordance with claim 1 of the formula ##STR22##
Claim 5
Dependent Claim
12 words
A brominated biphenol in accordance with claim 1 of the formula ##STR23##
Claim 6
Dependent Claim
67 words
A brominated biphenyl of the formula ##STR24## wherein independently each R is primary alkyl, each R 3 is selected from alkylene, cycloalkylene or arylene and mixtures thereof, each R 4 is selected from hydrogen, alkyl, alkenyl, cycloalkyl, cycloalkenyl, or aryl and mixtures thereof, each x is a positive integer of at least 1, and independently at least one y is a positive integer of at least 1.
Claim 7
Dependent Claim
67 words
A brominated biphenyl of the formula ##STR24## wherein independently each R is primary alkyl, each R 3 is selected from alkylene, cycloalkylene or arylene and mixtures thereof, each R 4 is selected from hydrogen, alkyl, alkenyl, cycloalkyl, cycloalkenyl, or aryl and mixtures thereof, each x is a positive integer of at least 1, and independently at least one y is a positive integer of at least 1.
Claim 8
Dependent Claim
33 words
The claim 5 compound wherein independently each R is methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl or octyl, each R 3 or R 4 contains from about 1 to about 10 carbon atoms.
Claim 9
Dependent Claim
33 words
The claim 5 compound wherein independently each R is methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl or octyl, each R 3 and R 4 contains from about 1 to about 5 carbon atoms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-08 | 1983-04-09 | 1983-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-08 | 1987-04-09 | 1987-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-08 | 1991-04-09 | 1991-10-09 | $7700.00 | Window Closed / Lapsed |